UNESCO-NIGERIA TECHNICAL & VOCATIONAL EDUCATION REVITALISATION PROJECT-PHASE II
NATIONAL DIPLOMA IN QUANTITY SURVEYING
CONTENT Week 1 1.0
Foundation
1.1
Excavation and earthworks
1.2
Cut & Fill Excavations
1.3
Stepped Foundations
Week 2 1.4
Foundation take-off activity I
Week 3 1.5
Foundation take-off activity II
Week 4 2.0
Structural walls measurement principles
2.1
Rules of Measurement
CONTENT Week 1 1.0
Foundation
1.1
Excavation and earthworks
1.2
Cut & Fill Excavations
1.3
Stepped Foundations
Week 2 1.4
Foundation take-off activity I
Week 3 1.5
Foundation take-off activity II
Week 4 2.0
Structural walls measurement principles
2.1
Rules of Measurement
Week 10 3.3
Pitched roof measurement roof measurement activity III
Week 11
4.1
Finishing measurement principles
4.2
Rules of Measurement
Week 12 4.3
Finishing measurement activity I (Ceiling)
Week 13 4.4
Finishing measurement activity II (Walls)
Week 14 4.5
Finishing measurement activity III (Floor)
Week 15 4.6
Finishing measurement activity IV (Painting & Decorating)
WEE EEK K1 Foundations Introduction
Foundations or sub-structure is the term used to indicate all supporting building work in the ground below a specific demarcation line, usually the damp proof course and/or damp proof type membrane.
In this first example all descriptions are written out in full, but it is usual for these to be abbreviated in practice.
Information required
SMM D20.P1 lists information which should accompany the bills of quantities. The following information is required before measurement can commence: 1. Full specification 2. Site survey report including the results of trial pits and/or bore hole investigations 3. Plan of foundations complete with sections and levels
Measurement Excavation
Excavation oversite to remove topsoil is one of the first operations carried out. Topsoil may be kept on site in temporary spoil heaps for use later in the execution of the external works. The depth of topsoil is obtained from the site survey investigations and if it is to be preserved it is measured in square metres, see SMM D20.2.1.
The oversite excavation is measured to the extreme dimensions of the building’s foundation, even though in practice the whole site may be stripped of topsoil in one operation. If there is no topsoil or if the topsoil is not to be retained then the resultant excavation to reduced level is measured in cubic metres and described as such.
The oversite excavation must be completed before the measurement of excavation of trenches or pits of which the depth is calculated from this reduced level (also known as the commencing level of excavation), and if this is more than 250 mm below existing ground level, this must be stated.
Earthwork support is classified by the maximum depth of the excavation and the distance between the opposing face, i.e. the distance the supporting struts have to span. However, it should be noted that the word ‘opposing’ does not necessarily mean opposite. For example, in the plan shown in Figure 3.1 all the earthwork support is classified as ‘Distance between opposing faces 2.00 m’ even though some opposing faces exceed 2.00 m. There would be no earthwork support measured in the categories 2.00—4.00 m (faces Y—Y) or >4.00 m (faces X—X) between opposing faces.
Where earthwork support to oversite excavation or reduced level excavation coincides with the external face of a trench and does not exceed 0.25 m high it is in practice measured and given the same ‘distance between opposing faces’ classification as the trenches. Where it exceeds 0.25m high it should be measured and given the appropriate classification, e.g. distance between opposing faces >4.00
Y X
X
The actual size of standard bricks is 215 x 102.5 x 65 mm, but the nominal size is 225 x 112.5 x
75
mm,
which includes a 10mm allowance for a mortar joint. This information will be used to calculate wall, pier and chimney stack widths and thicknesses in the following worked examples.
Plan of half brick
face of wall
Faced brickwork
Exposed faces of brick walls will usually be built using facing bricks and the joints pointed. To allow for the soil backfilling of trenches to settle, one or preferably two courses of facing brickwork are taken below the finished ground level. In the following worked examples two courses are taken below the finished ground level.
Flow chart for foundation measurement Start Excavate over site
D 2021.1.0 2 M (Soil retained)
Plan area of building to external face of foundation projection less re-entrants adjusted for foundation projection and reentrant corner. Disposal of over site excavation
D.20.8.3.1.1 3 M
Cube up above net plan area by thickness of over site excavation. Surface treatments
D.20.13.2.3.0 2 M
Excavate trenches
Same area as excavate over site
Concrete foundation
E.10.1.0.0.5 3 M
Volume of concrete in foundation, viz. center line girth of trench x width of concrete foundation x thickness of concrete foundation
SMM ref & unit measurement Earth filling to excavation (displacement by concrete) D.20.9.2.1.0 3 m
Deduct same volume as concrete in foundation Disposal of excavated material Sam volume as concrete in foundation
D.20.8.3.1.0 3 m
Brickwalls in common bricks F.10.1.1.1.0 2 m
(Where cavity wall and both skins are the same). Area of brick skins, viz centre line girth of wall x height of wall x 2 (for both skins) Forming cavity
F.30.1.1.1.0 2 m
Area of cavity wall, viz centre line girth of wall x height of wall
Damp proof course F.30.2.1.3.0 2 m
Plan area of brickwalls (where cavity walls), viz centre line girth of wall x width of skin of wall x 2 (for both skins)
Flow chart for foundation measurement – continued SMM Ref & Unit
Measurement
Continued Brickwalls in facing bricks
f.10.1.1.1.0 2 m
Area of brickskin in facing bricks. viz centre line girth of outerskin x height of facing bricks (N.B. always take one or two courses of facing bricks blow finished ground level
Adjust of brickwalls built in common Bricks Deduct same area as last item
F.10.1.1.10 M2
Internal walls
Various item
Repeat items excavate trenches to damp proof course as above except disposal of surface water forming cavit , fillin cavit
SMM Ref Unit
Measurement
Damp Proof Membrane
J.40.1.1.0.0 m2
Surface area of concrete bed, viz. same area as last item
Adjustment of soil to perimeter of building
D.20.10.1.2.3 m3
Volume of soil filling around external projection of concrete foundation of external walls (usually topsoil), viz. centre line girth of eternal projection of concrete foundation of external walls x width of concrete projection x thickness of filling (usually same thickness as oversite excavation).
Check drawing and taking-off list for outstanding
A
A
B
B
SPECIFICATION
1. Topsoil: 150 mm deep — to be excavated & deposited in spoil heaps 50 m from excavation. 2. All surplus soil taken to a tip provided by the contractor. 3. No ground water. 4. Concrete: a) Foundations — 15N/20 mm b) Oversite & cavity fill — 20N/20 mm 5. Brickwork: a) Generally to be Class B engineering bricks in cement mortar — (1:3) b) Facing bricks to be Redland multi coloured in cement mortar — (1:3) pointed with a flush joint as work proceeds. c) Built in stretcher or English bond. 6. Wall tiles: Mild steel vertical twisted type — to BS.1243 Type 3 — 2 per sq. metre.
WEEK 2: Foundation
Foundations 1 Taking off list. 1.
Excavate vegetable soil and disposal of soil.
2.
Surface treatments
3.
External walls a. Excavate trenches and disposal of soil. b. Earth work support. c. Keep excavations free of surface water d. Concrete in foundations and adjust disposal of soil. e. Brickwork up to damp proof course and ditto. i. Outer and inner skins ii. Formation of cavity
WEEK 2: Foundation
Page Nrs. 1
11
2
12
3
13
4
14
5
15
6
16
7
17
8
18
9
19
10
20
WEEK 2: Foundation
Foundation 2
Excavate oversite.
Side notes indicate section measured. (See taking-off list.)
5.400 x 8.000
Waste calculations to three decimal places. (See SMM General Rules 3.2.)
1.600 x 2.000
The convention of noting horizontal dimensions followed by vertical
External dimensions
7.000 10.000
+concrete projection
dimensions is used here.
The oversite exacavation must be taken to the extreme dimensions necessary to
WEEK 2: Foundation
Foundations 3
Excavate oversite (Ctd)
7.35
10.35
Excavating topsoil for preservation
SMM D20.2.1.1.O
average 150mm deep.
The ampersand is used to save writing & the dimensions again.
WEEK 2: Foundation
20/½/0.345 = 0.345 1.155
1.60
Ddt Excavating topsoil (corner
SMM D20.2.1.1.O
2.00
as before
The Golden Rule’ of measurement is
(re-entrant
‘measure overall and then adjust’. It is 0.75
necessary to adjust the topsoil excavation, etc., for the wants.
1.16
WEEK 2: Foundation
Foundations 4 Excavate oversite (ctd) 1.60 2.00
Ddt disposal excavated
(corner
material on site in spoil heaps as before
SMM D20.8.3.1.1 The instruction Deduct (Ddt) is written in front of the
Cube x 0.15
m
3
(re-entrant description of the item which has to be reduced.
&
SMM D20.13.2.3.0
WEEK 2: Foundation
Re-entrant 2/0.750= 1.500 External girth of brick work = 35.500
Passings 4/2/½ /0.255 Ç=
1.020 34.480 Trench depth
Existing ground level to top of concrete foundation 0.800
The total depth of foundation
0.200
trench is calculated from the
1.000
drawing, i.e existing ground
Over site excavation
0.150
level to underside of
Trench depth
0.850
foundation concrete less the
+ concrete foundation
thickness of the top soil which
WEEK 2: Foundation
Foundations 5
External wall (ctd)
34.48
excavating trenches width
0.60
0.30m maximum depth
0.85
≤ 1.00m (internal wall
&
SMM D20.2.6.2.0 See Foundations 13 for waste calculations for internal wall.
WEEK 2: Foundation
Earthwork support. External girth of trench Ç girth 34.480
+passings 4/2/ ¹/ ²/ 0.600 2.400
girth of oversite strip 36.880
WEEK 2: Foundation
SMM D20.7.1.1.0
Foundation 6 2/34.48
Earthwork support (ctd)
0.85
Earthwork support maximum depth
36.88
≤ 1.00m
0.15
Distance between opposing faces
2/5.40 0.85
≤ 2.00m
(oversite strip.
Earthwork support must be measured to any vertical face of excavation which exceeds 250 mm high whether or not the contractor requires it. The exposed face of excavation is measured in square metres as required by SMM7. The centre line girth of the trench is multiplied by the depth of the trench and then multiplied by 2 for both faces. This calculation gives an area equal to the area of the exposed faces of the trench. To this is added the area of
(internal wall The exposed edge of the oversite excavation.
WEEK 3: Foundation cont’d Foundations 7 Surface water (ctd) Item
Disposal, surface water
SMM D20.8.1.O.O
Surface water is water which runs over the surface of the ground and collects in the excavations (see SMM D20.8.1 —D9), the disposal of which is given as an item whenever any excavation
is
measured.
The
estimator assesses the cost based on the amount of excavation, e.g. open trenches, and when the foundations
WEEK 3: Foundation cont’d
The phrase ‘poured, on or against earth etc’ is necessary because work etc is measured net as fixed in position (see SMM General Rules 3.1) and in practice the trench may not
be
excavated
as
a
perfect
rectangle; therefore the estimator has to make an allowance in the price to cover such eventualities.
WEEK 3: Foundation cont’d
Foundations 8 Concrete foundations (ctd) 34.48
Ddt filling to excavations as before
SMM D20.9.2.1.O
0.60
Instructions
0.20
emphasized
Add by
and
Ddt
are
underlining.
5.40 0.60
&
(internal wall
0.20 Add disposal excavated material off site
Brickwork height
SMM D20.8.3.1.O
The required height of brickwork is
WEEK 3: Foundation cont’d Foundations 9 Brickwork (ctd)
Where the inner and outer skins of hollow walls are built of the same material, are the same width and are central on the concrete foundation, the walls can be measured on the centre line girth. If the skins are built of different materials or are of different thicknesses then the centre line of each skin must be calculated.
The walls are measured overall ignoring the fact that part of the outer
WEEK 3: Foundation cont’d
SMM F30-S2 requires the spacing of 34.48
forming cavities in hollow walls 50mm
0.95
wide, stainless steel wall ties as specified 2 per square meter
wall ties to be given. In this case the description could be written as ‘wall ties ... lOOm apart horizontally and O.50m vertically, staggered’.
WEEK 3: Foundation cont’d Foundations 10 Brickwork (ctd) Cavity filling
Height of cavity
0.950
-distance below damp Proof course
0.150 0.800
34.48 0.05 0.08
In situ concrete (20N/20mm)
SMM E10.8.1.0.0
Filling to hollow walls Thickness
≤
150mm
The thickness given in the description enables the estimator to calculate the
WEEK 3: Foundation cont’d 0.65 nilled as shown and the 5.74 correct dimension written 0.22 underneath. 0.65
Add disposal excavated material off site.
SMM D20.8.3.1.O
The dimension O.26 is the width of the cavity wall 0.255 .
WEEK 3: Foundation cont’d
Foundations 11 Damp proof course 2/34.48
damp proof course width
≤
SMM F30.2.1.3.0
225mm
0.10
horizontal single layer of ‘Hylood’ pitch
5.74
polymer lapped 150mm at all passings,
0.22
bedded in cement mortar (1:3)
finished ground level
outerskin built in facing bricks
(Meas. nett) common brick work
Facing brick adjustment
SECTION All brickwork has been measured in
WEEK 3: Foundation cont’d
Foundations 12
It is necessary to calculate the centre
Facing brick adjustment (ctd)
line girth of the outerskin in order to
¢ of outerskin
find the area of faced brickwork.
External girth of walls 35.500 4/2/½ -passings 0.1025 0.410 35.090
Height Ground level to damp proof course Below ground level
0.150
WEEK 3: Foundation cont’d
The description for a repeat item or deduction need only be full enough to enable the worker-up to recognize the item to which it relates.
WEEK 3: Foundation cont’d
Foundation 13 Internal wall
Depending construction,
on the
the
form
internal
of wall
foundation may be measured with the external wall foundation, but here it is measured separately to enable the student to concentrate on one section of the foundation at one time.
One system is to add these dimensions back in a coloured ink as this saves
WEEK 3: Foundation cont’d
Length of brick wall Overall dimension
7.000
-re-entrant
0.750
concrete projection
external wall trench and concrete measure to this face.
-external brickwalls 2/0.255: 0.510 5.740 Length of trench etc Length of 1B wall
internal wall
brickwork measured to internal face of external wall
5.740
-concrete projection of external wall
PLAN AT JUNCTION OF
foundation
EXTERNAL AND INTERNAL
WEEK 3: Foundation cont’d
Foundations 14 Internal wall (ctd) Same depth as external wall.
When measuring internal wall foundations it should be noted that the length/girth of the brickwork is longer
The dimensions for the internal wall are
than the length/girth of the trench and
Added back to foundations 5 et seq.
concrete. This is due to the projection
except:
of the concrete foundation beyond the brick face at the junction of walls.
5.74
walls one brick thick, vertical in
SMM F1O.1.1.l.O
WEEK 3: Foundation cont’d
SMM D20.10.1.3.0 Foundations 15 Hardcore bed (ctd)
1.60
Ddt hardcore filling as before (corner
2.00 0.15
(re-entrant 1.500 +external walls 2/0.255:0.510 2.010
WEEK 3: Foundation cont’d
m3
Cube x 0.15
&
Trowelling surface of concrete SMM E41.3.O.O.O
WEEK 3: Foundation cont’d
Foundations 16 SMM D20.13.2.2.1 Concrete beds etc (ctd) 1.60
Ddt surface treatments.
2.00
Compacting hardcore
0.75
as before
(corner (re-entrant SMM E1O.4.1.O.O
2.01 & 5.74 Ddt in situ concrete 0.22 (20N/20mm) as before
WEEK 3: Foundation cont’d
0.75
(internal wall
2.01 5.74 0.22 Foundations 17
Adjustment of top soil to perimeter TOP SOIL TO BE REPLACED G..L
¢ of projection EARTH FILLING ALREADY MEASUR
External grith of external walls Concrete projection 2) 0.345 0.173
SECTION
WEEK 4:
Walls Introduction
The measurement of structural walls may be carried out by a variety of methods, depending on the format of the bills of quantities to be adopted, e.g. elemental, trade, etc., although the approach for each each is similar. However, before measurement measurement can can commence, plans of all floors, roof level, elevations, sections and all necessary details will be required. Approach
Measurement should be divided into manageable portions for each individual building or parts of a building and then further divided into: 1. 2.
external walls internal walls
3. 4.
chimney breasts chimney stack
The measurement of fire surrounds, flue liners, chimney pots and cappings would normally be measured as a separate section and and thus could be measured measured by a different taker-off. Working from the whole to the part, measure walls over all openings and projections and then adjusts for blank openings (not window or door openings which will be
S4
-
Type of pointing; this is the treatment of the face of the mortar joints. There are different finishes, e.g. weather struck joint, flush joint, bucket handle joint, etc., but irrespective of the type of finish, they are executed by one of the two following methods:
1.
‘As work proceeds’. The bricklayer will complete the face of the mortar joints to the required finish at some convenient time before the mortar has set. This is a relatively cheap process. The code of practice relating to brickwork describes this process as ‘jointing’, but as SMM7 F10-S4 refers to ‘pointing’ only, it is described in the following examples as ‘pointing with a . . . joint as work proceeds’.
2.
‘As a separate operation’. The bricklayer will rake out the mortar joints to a depth of approximately 12mm while the mortar is still green and then, after the brickwork is finished, but before the scaffolding is dismantled, the joints will be filled with mortar and the face treated. This gives the brickwork a uniform appearance but is a very much more expensive method of pointing.
SMM F10.1-4 Classified brickwork and blockwork in to four separate heading, i.e. walls, isolated piers, isolated casings, and chimney stacks. Also, different thicknesses of brickwork or blockwork are kept separate and are each measured in
Measurement
Measurement the walls up to a general level, e.g. roof plate level, overall opening, recesses, etc., and add for gable walls, all adjustments being made later. The taker-off must decide whether or not not to measure measure the walls walls over openings. Generally the decision depends on whether the wall is to be supported on a lintel over the opening (with adjustments being made with the doors or windows sections), or if the doors have storey height frames, i.e. floor to ceiling, in which case there is no need to measure the wall over only to be deducted in full at a later stage. These openings are termed nett openings and they should be noted on the drawing and the taking-off. Deductions for lintels, etc., are made as regards height to the extent only of full brick or block courses displaced and as regards depth to the extent only of full half brick beds displaced, see SMM F10-M3. For example, with regard to Figure W.1, blockwork is not deducted as the lintel does not displace a full course. If the lintel was 225 mm high a full block would be displaced and an appropriate deduction would be made.
Isolated piers are measured as such only if dimensions are as shown in Figure W.3, see SMM F10.2 D8, otherwise are measured as a wall if it exceed 4x 225
215
If length is less than 4 x 225 measure as isolated pier
Figure W.3 Plan
Flow chart for structural walls
SMM ref & unit Start External wall to bungalow – brick out Skin in facing bricks F.10.1.2.1.0 m2
Measurement
Area of brick outerskin of hollow wall to bungalow including gable (measured as if garage were not attached – adjustment made later) viz. centre line of outerskin x height of wall plus width of gable x height of gable x ½ (area of triangle base x height divided by 2), plus width of gable x height to raise brickwork above roof plate level. Ditto – forming cavity including insulation F.30.1.1.1.1 Area of cavity of hollow wall including 2 m gable, viz. centre line of cavity x height of wall plus area of gable and raising as above. Ditto – block inner skin F.10.1.1.1.0 Area of block inner skin of hollow wall
Attached pier to bungalow F.10.5.1.1.0 Length of attached pier, viz. height from 2 m dpc to soffit board level. Adjustment of brick outerskin built in facing bricks but not pointed behind attached pier F.10.1.2.1.0 Deduct area of outerskin built in facing 2 m bricks and pointed behind attached pier, viz. width of pier x height of pier as last item. Ditto F.10.1.1.1.0 Add area of outerskin built in facing 2 m bricks but not pointed behind attached pier, viz. same area as last item. Internal structural brick walls F.10.1.1.1.0 Area of 1B wall measured over blank 2 m opening, viz. length of wall x height of wall, plus width of gable x height to raise brickwork above roof plate level as before. Ditto in roof space faced both sides F.10.1.3.1.0 Area of 1B wall in roof space, viz. width 2
Adjustment of one brick wall pointed both sides in roof space behind chimney breast F.10.1.3.1.0 Deduct area of one brick wall facework 2 m both sides, viz. width of chimney breast in roof space x average height of chimney breast. Ditto F.10.1.2.1.0 Add area of one brick wall facework one 2 m side, viz. same area as above item. Chimney stack F.10.4.3.1.0 Area of chimney stack above roof level, 2 m viz. width of stack x average height of chimney stack. Damp proof course in chimney stack F.30.2.2.3.0 Plan area of stack, viz. width of 2 m stack x depth of stack Chimney capping flue linings etc To take note measure with fires and vents Not measured in this example section External brick wall in facing bricks to garage F.10.1.3.1.0 Area of half brick wall to garage, viz. 2
Ditto
F.10.1.2.1.0 2 m Adjustment for outerskin of bungalow built in common bricks next attached F.10.1.2.1.0 2 m
Add area of screen wall facework one sides behind attached pier, viz. same as area as last item.
Add area of outerskin built in common bricks next attached garage, viz. same area as last item.
WEEK 5
WALLS MEASUREMENT
1
WALLS Sequence of Measurement External walls
2
Adjustment of fair faced work in roof space
3
Adjustment of faced work at eaves
4
Attached piers
5
Internal walls including walls in roof space
6
Blank opening adjustment
7
Chimney breast
8
Chimney stack
9
Garage
10
Screen wall
11
Adjustment of external wall next garage
The height of the external wall Gable Wall generally has been measured to the underside of the wall plate. Therefore the measurement of the gable wall will comprise the raising of the general wall height by 150mm, and then a triangle following the shape of the top line of the rafters. Height of gable Tan 400 x half span The height of the triangle is calculated Tan 400 x 3.000 by trigonometry. Pitch of roof is 40º = 2.517 The outerskin, cavity and innerskin will all be the same size.
½/
41.59 2.7'0 6'.00 0.15
Walls facework one side h. b. thick, vert. SMM F10.1.2.1.0 Messrs "X" multi. Col. Facg bks in stretcher bond in gyp. Mort ( gable end The term walls includes skins of (1:1:6) & ptg wi. A (raising hollow wall. (see SMM F10- D4.)
6'.00 2.52
weathered struck jt. A.w.p. (gable end (triangle
Innerskin cont'd
½/
40.18 2.70 6.00 0.15 6.00 2.52
Walls 150mm thick, vert. in Thermalite Turbo blks. In stretcher (gable end bond in g.m raising (raising (1:1:6) (gable end triangle (gable end (triangle
Adj for facework in roof space Gable wall. ½/
6.00 2.52
Ddt walls 150mm thick in Thermalite blks a.b.
SMM F10.1.1.1.0
The exposed face of walls in the roof space is to be finished fair. SMM F10.1.1.1.0
& Add walls facework one side 150mm thick in Thermalite Turbo' blks. in stretcher bond in g.m. (1:1:6) & ptg. With t a flush j . A.w.p.
SMM F10.1.2.1.0
Attached pier NB. Pier built to soffit board level.
Outerskin - soft. Depth
2.48
Hgt. 2.700 0.225 2.475
Projections 215mm. Wide & 113mm. Proj. vert. in Messrs 'x' multi - col. Fcg. bks. In English bond in g.m. (1:1:6) & ptg. With a weathered struck jt. a.w.p.
SMM F10.5.1.1.0
Labours to returns are deemed to be included. (see SMM F10-C1 (f) )
Attached pier 0.22 2.48
Ddt walls facework one side in Messrs 'X' fcg bks a.b.
SMM F10.1.2.1.0 The wall behind the attached pier is built in facing bricks but not pointed on face. Probably would not be
Int. struct. Wall (Ctd). wall in rf. Space. ½/
6.00 2.52
Walls facewwork both sides one bk. Thick in c.b. in English bon in g.m. (1:1:6) & ptg both sides with a flush jt. a.w.p.
Adj. of blank opg
SMM F10.1.3.1.0
There does not appear to be a classification in SMM for the measurement of block bonding at the junction of the brick internal wall and block external wall. The classification requirements in SMM. F10.1.0.0.2 refer to superficial items and F10.25 refers to existing work Sometimes an opening is required through a wall which will not have a door or window set in it. This is called a blank opening. The adjustment of the structure will not be carried out in the usual way, i.e structure etc. deducted for the opening
WEEK 6
WALLS MEASUREMENT CONT’D
1
Proprietary gal. m.s Lintol 215mm wide x 215mm hi. & 2250mm lg. Type 'Z' manufactured by Messrs 'Y' & b.i. to bwk. bwk. adj. added back
SMM F30.16.1.1.0
Chimney breast he chimney breast is measured gross, i.e over the fireplace opening. The adjustments for the fireplace opening and measurement of flue linnings etc. will be made in the fires and vents section of the taking-off Height Grd. Flr.
2.775
into roof space. 0.075 2.850
Length 0.440 0.600
The brickwork in chimney breasts and chimney stacks is measured solid as if there are no flues in them. Brickwork will only be deducted if the flue area exceed 0.25m². (see SMM F10-M2 (b) ) . The usual cross-sectional area of a domestic flue is 0.215 x 0.215 = 0.05m²
Chimney breast (Ctd) Roof space Hgt. ext. walls 2.700 rf. Plate etc. 0.150 to apex of
in rf. 2.517 '5.367 - breast grd. Flr. 2.850 '2.517
Adj. of a x=
at top of chimney breast
0
tan 40 x 0.440 = 0.185 '2 - av = ½/0.185 = 0.093 '2.424 Width '0.440 As width 0.440 < four times proj. 1.320 Then measure Chimney breast as a projection
2.42
Proj. 440mm wide & 330mm
SMM F10.5.1.1.0
+
Chimney Hgt Above roof 0.500 Adj. of B at top of rf. 0.093 '0.593
Stack
0.44 0.59
Chimney stacks facework both sides 2B thick vert. in Messers 'X' fcg. Bks. .b. in Eng. Bond in c.m . (1:3) with joints raked out 10mm dp & ptd. In g.m (1:1:6) & finished with a weather struck jt. As a separate operation.
SMM F10.4.1.0 The chimney stack is usually built in cement mortar due to its exposed position but the mortar will appear to give the faced brickwotk a different colour from that built in gauged mortar. Therefore the joints of brickwork are raked out and pointed in gauged mortar to give the chimney stack a similar appearance. There is no clause in SMM to measure pointing ends of the chimney stack as the labour is deemed to be included. (See SMM F10.C1 (f).)
0.44 0.44
D.p.c. width > 225mm. Horig bit. Felt single
SMM F30.2.2.3.0
Garage (Ctd) Attached piers 2
/2.33 2.33
Proj. 215mm wide & 113mm deep. Vert. in (Screen wall Messrs 'X' fcg bks a.b. in Eng. Bond in g.m. (1:1:6) & ptg. With a weather struck jt. A.w.p.
SMM F10.5.1.1.0
Adj. of walls behind piers 2
/0.22 2.33
Ddt walls facework both sides in Messrs 'X' fcg bks. a.b. ptg. One side wit a weather struck jt. & other side with a flush jt. A.w.p.
SMM F10.1.3.1.0
& Add walls facework one side in Messrs 'X' fcg bks a.b. ptg. One side with
SMM F10.1.2.1.0
Adj. of wall behind pier 0.22 2.33
Ddt. Ditto
SMM F10.1.3.1.0 &
Add walls facework one side h.b. thick, vert. in Messrs 'X' fcg. Bks. A.b. in stretcher bond in g.m. (1:1;^) & ptg with a weather struct jt a.w.p.
Adj. of ext. Wall of Bungalow next garage. Length '6.000 - '1.500 '4.500 H gt. garage bwk.2.325 + roof 0.225 '2.550
SMM F10.1.2.1.0
WEEK 7
Roofs
Introduction
A roof, whether flat or pitched, is divided into the following sections for measurement purposes: 1. 2. 3. 4. 5. 6.
roof construction roof coverings treatment at eaves rainwater goods roof lights and adjustments adjustments for chimney stacks
Only the first four sections have been considered in the following example, as in practice the last two may be measured by another member of the taking-off team, as has been assumed here. As mentioned in exercise, it may be necessary to measure with this section any brick gable and party walls above roof plate level if the format of the bills is elemental. This brickwork would be measured with the first section, roof construction; however, the more traditional format has been adopted in the measurement of the following examples. Obviously, it is preferable to have a plan of the roof, section through the roof
The plan of a rectangular constant pitched roof will show the shape of the roof and have the following geometric properties, as shown in Figures R.1 and R.2. below M 10.00 H A 450
450
B
Hip Ridge
E
Hipped end D
F
G
450 450
C
J
M
Figure R.1 Plan K
4.00m Gable end
However, because the roof is of constant pitch, the total area of covering can be calculated by measuring overall, ignoring the hipped end e.g. 2. (10 x 2.611) = 52.220 square metres . As the roof is of consultant pitch, half of the area of the hip end covering is equal to the additional area measured if one roof slope is measured as a rectangle. Similarly, when measuring the length of timber required for the common and jack rafters of the main roof slopes and hipped end, the common rafter. From Figures R.3 (a) and (b) below, it can be seen that : a + a = common rafter. A
H d a
A
Jack rafter H d
c
c b
b
d
b
Full size common rafters
c d
c a
a b a
E
F
E
F
Additional common rafter
(a) Figures R.3 (a) Part plan hipped end of roof (1) (b) Part plan at hipped end of roof (2)
(b)
Figure R.6
Roof plan
Figure R.7
Let length of roof slope in all cases be ‘rs’, see Figure 9.7. Structural timbers – generally
Section
Rafters In order to measure the amount of timber required for common and jack rafters it is necessary to: 1. Calculate length of common rafter, see Figure R.8. (a) By Pythagora’s theorem. L = √S2 + R 2 (b) By Trigonometry. L = S ÷ cos 40 0 Calculation will give a dimension along the centreline of the rafter to which should be added an allowance for the raking and cutting at the ridge. (c) By scaling. This method should only be used as a last resort.
Length of Common rafter = L
Rise = R
For example, let the centres of rafter be 450 mm. (i) Calculate distance between centres as follows: Overall dimension Less Gable end Wall 0.255 Gap 0.025 Centre of last rafter ½ /0.050 0.025 2/ 0.305 = Distance between centres of first and Last rafters (ii) (iii) (iv)
(b)
2.810
0.610 2.200
Divide by centres 0.450 )2.200 = 4 Plus one for any remainder 0.400 = 1 Plus one for end rafter =1 6 Nr
For hipped roofs: (i) Calculate the extreme distance between hip rafters. (ii) Divide the extreme distance by the centres between rafters.
Verge bedded in coloured Cement mortar (1:3)
Plain tile Undercloak
50 x 100 mm rafter
50
255
25
50
SECTION THROUGH VERGE
Scale 1:10
WEEK 8
PITCHED ROOF MEASUREMENT
TRADITIONAL PITCHED ROOF Pitched Roof 1 Take – off List Construction 1. Wall plates 2. Rafters 3. Ceiling Joints 4. Ridge 5. Hip & Valley rafters 6. Binders 7. Hangers 8. Insulation Coverings 1. Tiling including battens & felt 2. Eaves including ventilators
Pitched Roof 2 Construction Preamble Note All structural timber is to be stress graded sawn softwood to C.P 112 grade SS group S1, and to be pressure impregnated with ‘Tanalith C’ dry salt 3 net retention 5.3 kg / m .
To comply with the requirement of SMM G20S1 and S4 a preamble note is inserted in the dimensions. This also saves having to repeat the full description for each structural softwood item.
As the pitch of the roof is constant, the shape has little effect on the method of measurement. Therefore for split into main roof and projection. (See diagram)
Pitched Roof 3 Construction (Ctd) Wall plate (Ctd)
A wall plate is required to support the main roof ceiling joists across the junction of the main rood and projection. The wall plate will run on the top of the structural partition which is shown on the drawing. If there were no partition shown then a beam would have to be measured. The wall plate to the two long sides exceed 6.00m long. It is not necessary to have it in one
Pitched Roof 4 Constr. (CTd) Wall plate (Ctd) NB. There is no wall plate at the gable End.
Main roof
Rafters Numbers The main roof is essentially the same as a roof hipped at
Pitched Roof 5 Constr. Ctd) Rafters (Ctd) the centres are always less than the design centres of the rafters. The amount of timber measured for Numbers (Ctd) rafters will be Projection sufficient to produce o/a. bk. dims. 3.000 the structure to cover -junction with main of the main roof overhang 0.200 irrespective of its - fascia 0.025 0.175 shape. 2.825 -gable wall 0.255 The projection is Gap 0.025 treated as a roof & rafter ½ /0.050 0.025 0.305 structure on its own. See first rafter next 0.400 2.520 main roof.
Pitched Roof 6 Contr. (Ctd) Length of common rafters (Ctd) b/f = 3.141 extra length x = 0.050 Ton 500
= 0.042 3.183
The shape of common rafters is complex for calculation purposes. Because there are so many rafters in a roof it is necessary to calculate the length of timber reqired for each rafter accurately.
Pitched Roof 7 Constr. (Ctd) Rafters (Ctd)
2/8.25/
3.18 3.18
50 x 100mm Swn ‘Ton’swd. rf. Members pitched (Add rf. At hip see below)
SMM G20.9.2.1.0 25 and 8 are the numbers of rafters and timesing by 2 is for both sides of the roof.
Additional rafter Hips :2 Nr -rafter not required Nr
:1 :1
Nr
Main roof o/a bwk. dims - wall - gap -jst. ½ / 0.050 .
Ceiling joists Nr. 10.00 0.255 0.025 0.025
Usually there will be one ceiling joist for every pair of common rafters, but if a hip ended roof has wide
WEEK 9
PITCHED ROOF MEASUREMENT
Pitched Roof 8 Constr. (Ctd) C/g jsts. (Ctd) 8.25/
4.50 50 x 100mm.swn ‘Ton’ Swd rf. Members Pitched
SMM G20.9.2.1.0
Adj of C/g jsts at junction with proj. wall -partition
0.255 0.100 0.155
The ceiling joists at the
Pitched Roof 9
Main roof - hips
Projection
5.50 4.95
Constr. (Ctd) Ridge 10.000 2/ ½ /4.500 4.500 5.500
3.000 + main rf. ½ /4.500 2.2500 5.250 - gable wall . 0.255 Gaps 0.025 Ridge ½ /0.038 .0.019 0.299 4.951
38 x 200mm swn ‘Ton’. (main rf Swd rf members (Proj pitched.
SMM G20.9.2.1.0
Pitched Roof 10 Constr. (Ctd) Binders Main roof + eaves overhang
2/0.195
+ scarf jt
2/0.100
Projection - part
10.000 0.350 10.350 0.200 10.550 3.000 0.100 2.900
It would be impractical to provide timber 10m long so an allowance is made for a scarfed joint.
Pitched Roof 11
Projection
Contr. (Ctd) Hanger (Ctd) Nr. full length binder length 2.900 = 0.800 /2.900 3 + 1 rem + 1 end
Length Under hip Hanger ‘a’
Hanger ‘b’ -
2.425 - 2/0/800 1.600 0.825 = 0.825 x Ton 400 = 0.692 2.425 0.800 1.625 = 1.625 x Tan. 400 = 1.364
Hangers are still required to support the binder under the hipped ends.
Pitched Roof 12 Contr. (Ctd) Insulation Projection 3.000 - gable wall 0.255 2.745
10.00 4.50 4.50 2.75
150 mm Glass fibre (main rf Insulation quilts Laid bet. Members (proj. at 400 mm. centres. bult joints horiz.
SMM P10.2.3.1.0
Pitched Roof 13 Cvgs. (Ctd)
2/
2/
10.50 3.26
2.80 3.26
165 x 265 mm ‘Redland (main rf Rosemary plain tiles as spec. rf (proj. cvgs. 40 0 pitch laid to a 65 mm end lap & half tile side lap, each tile in every 5th cars. twice nailed with 38 mm x 12g aluminium alloy nails to & inc. 32 x 19 mm swn Tan. swd. battens at 100 mm gauge fxg with 40 mm x 12g. nailsinc. Rfcd. bit rfg. felt underlay to BS. 747 type 1F fxd. with galvanised clout headed nails with 150 mm laps at all passings.
SMM H60.1.0.0 For constant pitch roofs this measurement will give the correct area of tiling etc. irrespective of the shape.
WEEK 10
PITCHED ROOF MEASUREMENT
Pitched Roof 14 Cvgs (Ctd) Eaves (Ctd)
26.00
2/
Eaves double (main rf course each tile (proj. twice nailed.
SMM H60.4.0.0.0
‘Redland Redvent’ eaves ventilator Type 9189 with fascia grill & integral apron fxg. to swd. rafters at 400 mm centres.
SMM H60.10.1.1.0 (unit altered to m)
2.80
The eaves ventilation system specified here is a continuous system
Pitched Roof 15 Cvgs (Ctd) Ridge Porj. + main rf. ½ / 4.500 + verge overhang
5.50 5.30
3.000 2.250 =0.050 5.300
Hal round ridges (main rf. To match gen. tiling (proj. inc. ‘Redland Dry Vent ridge system, fixing with stainless steel nails & neoprene washers. Plastic air vents both sides.
Length = =
Hips √half span + slpg. dist 2 √2.5002 + 3.2642 2
SMM H60.6.0.0.0
Length of hip tiles calculated by
Pitched Roof 16 Eaves Facia bd 10.000 Main rf. Proj.
4.500 3.000
ext. girth of bwk -gable end + passings 2/2/2/½/0.200 ext. face of fascia + mitre at int. 2/2/0.025 + verge 2/0.050
31.50
25 x 125 mm wrot swd. fascia bd. width ≤ 300 mm
7.500 2/17.500 = 35.000 4.500 30.500 0.800 31.300 = 0.100 0.100 31.500
To calculate passing timesing ext.< = 4 int. < = 2 2
SMM G20.15.3.2.0 Timber is measured the length necessary to cut the mitres and angles etc.
Pitched Roof 17 Eaves (Ctd) Soffit (Ctd)
32.00
19 x 175 mm wrot swd. Eaves soffit bds width ≤ 300 mm.
SMM G20.16.3.2.0
Prime only gen. surf. Of wood isol. Surf. girth ≤ 300 mm a.b.
SMM M60.1.0.2.4
Pitched Rood 18 Eaves (Ctd) Boxed ends
2/
1
19mm Wrot swd. spandrel ends to eaves 200 x 300 mm overall Scaled
&
Prime only gen. surf. of wood, isol. area ≤ 0.50 m2 irrespective of girth applied on site prior to fxd
SMM G20.18.0.1.0 Boxing in he gap between the fascia and soffit boads and brickwork at the gable ends.
SMM M60.1.0.3.4
Pitched Roof 19 Rainwater goods Gutters same dims. as for eaves cars.
SMM R10.10.1.1.1
2.80
100mm Dia. U.P.V.C. rainwater gutters to B.S. 4576 str. half round with dipped neoprene jts & fascia bkts. at 1m centres screwed to swd.
2
Extra over ditto for stop ends
SMM R10.11.2.1.0
26.00 2/
Gutters are measured on the centre line and all fittings are measured as extra over.
Pitched Rood 20
Rainwater Gds (Ctd) Gutters (Ctd)
3
Pipework ancillaries gal. wire balloon grating to fit 75 mm dia pipe.
SMM R10.6.4.1.1
Pipes NB length assumed
3/
5.00
3/
1
75 mm Dia. U.P.V.C. rainwater pipes to B.S. 4576 str. with push fit socketted jts. & brackets at 2m centres p & s to bwk.
SMM R10.1.1.1.1
E. O. ditto for swanneck
SMM R10.2.4.5.0
WEEK 11
SHEDULE OF FINISHING Location
Ceiling Finishing
Treatment Room
10 thick, 2 coat lightweight gypsum plaster to 85 1911 Part 2 on concrete with bonding plaster backing and final coat of finish plaster steel trowelled
Entrance Porch
Entrance
25 thick British Columbian Pine tongued, grooved and v jointed boarding nailed to 50 x 19 impregnated softwood battens plugged to concrete
Decorations to ceiling
Wall Finishing
Decorations to Walls
Prepare and apply 3 coats of white emulsion
10 thck grey in situ terrazzo dado, 1.27 m high above skirting on t2 thick cement and sand (1:4) screeded backing plaster above as for ceilings
Prime and apply 3 coats of oil paint, matt finish, above dado
K.p.s. and 3 coats of oil paint gloss finish
Cement and sand (1:4) backing 10 thick and Tyrolean finish of ‘Cijllamix’ mixture applied by machine
Skirting
10 thick black in Situ terrazzo 150 high flush with dado above and with terrazzo margin 16 thick and 100 wide at junction with floor
Floor Finishing
16 thick blac white in Situ terrazzo laid alternately in panels about 500 between 16 ebonite dividing strip building pap underlay on thick cement sand 11:3) screeded
152 X 152 brown quarry to BS l2t36T bedded, loint and pointed i cement mort :3lon 28 thic cement and s (1 :3) screed
1.22 m high above skirting, fixed with adhesive to 50X l9impregnated softwood battens fixed towalls at406centres arid top and bottom. 13 thick 2 coat plaster above dado with base coat of Thistle browning and sand (1 :2)11 thickand finishing coat of Thistle finish plaster 2 thick steel trowelled
Cloaks
10 thick, 2 coat lightweight gypsum plaster as treatment
Prepare and apply 2 coats of emulsion paint
13 thick, 2 coat gypsum plaster to BS 1191 Part 1 of browning plaster
thick cement a sand (1:3) bed Seal, body in twice wax pol
Prepare and apply 2 coats of emulsion paint
25 X 150 chamfered softwood skirting on grounds, and
300 x 300 X PVC tiles to B 3261 TypeA f with adhesive
Telephone Cubicle
Fibreboard accoustic tiles 305 x 305 X 19 butt jointed both ways, fixed with adhesive to cement and sand 11:4) backing 10 thick
Ladies and Gents Toilets and Lobby
10 thick, 2 coatplaster with 8 thick coat of Carlite bonding plaster finished with 2 thick coat of Carlite finish plaster
13 thick, 2 coat gypsum plaster as Cloaks
Prime and apply 3 coats of oil paint, gloss finish
152 x 152 x 6 cushion edged glazed ceramic tiles to BS 1281,fixedwith adhesive jointed and pointed with white cement on 10 thick, cement and sand 11:4)
Prepare and apply 2 coats of emulsion paint
25 x l5Ochamfered softwood skirting on grounds, and k.p.s and 3 coats of oil gloss finish
300 X 3005< cork tiles, Cor Plast, checker Nr 13 standar semi bright fi butt jointed, f with copad adhesive on 4 thick cement a sand(1 :3) trowelled bed
152 x 152 x 9 full vitrified ceramic tiles t 1286, with 3 w joints, bedded jointed and po with cement mortar 1 :3) o thick cement a sand)l :4) scre bed
Week 12
FINISHINGS
Ceiling A logical sequence is adopted Treatment Rm for the measurement of the
3/
6.75
6.750 finishings, taking the order of 6.78 Less beam 300 ceilings, walls, skirting and 2/
6.78
3/
6.75 0.23
2) 6.450 floor
Examples 12 Pla clg, width The plasterwo Beam A 300, light ut gyp beams is class Soft & th Pla 10 o/a on to ceilings, bu sides Conc a.b.d width is < 300 measured in m Beam B (SMM M 20.2 Soft M20.D5) Beam B Soft
3.225 The work is deemed to be internal unless descried as Less3.225 7.000 eternal (SMM M20 DI), and so 225 3.450 internal work requires no 3.550 specific mention The areas of ceiling to 2/ 3.55 3.23
3.23 3.23 ¼ /22
Pla dg, width >
treatment room between the
300,
beams are calculated in waste
Light wt gypsum
the plasterwork to the teams
pla to BS 11911 Pt
has to be kept separate as the
6.78 0.30
Paintg gen surfs Gth>300,seal & Beam A Soft & 3cts white sides Emulsn Pt., pla clg Beam B Soft
The decoratio sides and siffi beams are add similar work o ceiling, where the same colo are measured
pla backg & final
in metres in metres (SMM
ct. of fin pla.
M20.2.1-2.1.0) but classified
Trowell smth
as to ceilings (SMM M20.D5)
< 300, a.b.
0.22 1.10
The description of the ceiling &
plaster includes the thickness
Paintg gen surs.
and umber of coasts and the
2/
6.55
gth.> 300, SEAL &
relevant particulars listed in
2/
6.78
3 XRS, white
(SMM M20.51-6), including
emusn pt., pla dg.
the thickness and number of
???
Ddt paintg gen Surfs., gth > 300 Emulsn [t.pla clg a.b 6.750 Less ends over Piers w/102.5 205 6.545 Rdd. L to pla, Rad, 10-100.
(beam A Beam B
coasts and the relevant
Ent. Porch 2.15 Less side lts 100 2.050
particulars listed in (SMM M20.51-6), including the kind of quality, composition and mix of materials, nature of
2.60 2.05
Tbr. Bd ling to clg with th >300, 25 wrot brit.col pine t&g.&v/jtd bdg nailed to swd battens (m/s) ext.
base, preparatory work and Paintg g.s, gth > 200, k.p.s,
painting are d to the sofit of and it is suppo piers,a s these at the bounda measured area general rules deduction is m the intersectio beams as ther involve leass vold limit of o (S,, ,20.M2 an M60.M3). Rounded angl measured in m when in the ra 100 mm radiu M20 . 16.0.0. M7) The work is d internal unles described as e (SMM K11.D M60.D1) boa the entrance p ceiling is mea m2 with a dim description an the width rang
Decorations to ceiling are measured in mw and classified as to general surfaces (SMM M60.10.1.0), with particulars given in accordance with SMM M60.51-8. painting and Beam B decorations to ceilings >3.50m 3.550 above floor level are so 3.225 described in 1.50, stages, 6.775 except in staircase area which are kept separate and so described (SMM M60.M1-M2) rubbing down is deemed to be included and does not require specific mention (SMM
discretion of t contractor and background a k11.311.0 and 13. The painting p are given in a with 5mm N6 and M60.51-8
FINISHINGS
9/ 2.05
4.86 2.76
400) 2.600 Battens are measured in metres as individual supports with a 7 + 1 dimensioned overall crosssection description (smmm G20.13.0.1.0), which include \s the method of fixed where not at the discretion of the contactor (smm G20 52). Indivdl suppts, 50 x Continue to work round the building in a logical sequence 19 impregnted. Sawn marking off each section on the schedule of finishings, as it sed. [;ugd to conc. is completed make full use pf waste for the build up of dimensions. Ent. Jall The description of the ceiling plaster is reduced by the use if 2.600 the letters ‘a.b.d.’ (as before described) as it consists of the Add cavity wall 255 same materials s use for the treatment room 2.955 For painting give particulars of the kind and quantity of Less block ptn. 100 materials, painting requirement and nature of base (smm 2.755 M60.6\51-8) It appears from M20.2 1.1.0. and the SMM 7 library of
3.31 2.55 1.91 0.45 4.29 3.00 1.3 0.88
Examples cont Ladies & Gents In building up Toilets and lobby figured dimen use whenever Lobby in preferences 1.450 scaling Less blk ptn 100 q.350 gents toilet 3.000 Less recess 450 2.550 Pla. Dg, widh > Another attern th 200, in 2ct, 10 Gents type of celing th a/o w, 8 it of toilet is used to give carlite bondg student examp finish & 2th it. Ditto different appro Of corlite recess firming descri Fin pla. Ot con. locations of th shown in wast & Ladies in identifying toilet dimensions in Painting. g.s, girth future 300, (1) pring. ct, lobby (1)glass fin, pla clg The sectional each dividing in the toilet cu < the void lim m2 presecribe Walls 5MM M20.M
it wt. gyp pla to B% 1192 pt 2 in 2cts, th
10 , o/a conc.
& 1.10 0.88
metres Decorations are described in accordance with SMM M60.1.0 1.0 and M60.51-8. The description of the acoustic tiles includes the kind. Quality and sizes of tiles, nature of base, surface treatment of joints (SMM M50.51-8) the backing from a separate item to which the same rules apply as for cement sand screeds (SMM m10.2..10)
20.600 abbreviation o surfs and g.s f general surfac girth of straigh of walling exc piers is calcul waste.
20.60 1.27
Paintg g.s, gth> 300 (1) primg at, (2) u/ce oil pt & (1) matt fin 20.60 1.42
to pla clg
Caoks
Pla clg, width > 300,
Terrazzo in situ to walls, width > 300, 1oth, of it. & grey marble chippgs (1:2), trowelled to smth fin. & pol. On it. & sal. Backg (m/s)
The terraxo da description inc appropriate pa contained in 5 M10.1.1.10. T followed by th and sand back 1.270 a similar appr Add sktg 150 the height is in 1.420 by 150 mm to the skirting. Ct. & sd (1:4) backgt walls, width > 300, fltd, th 12 , on buk
FINISHINGS
¼ /22 7/
¼ /22 7/
3.23
3.23 1.42
2/ 1.27 2/2/ 1.27
2/ 1.42
Terrazzo in situ ling to th wall, width > 300, 10 a.b.d curved to rad of 3.23m
2/
0.30 0.15
¼ /22 7/
3.23 1.45
Curved word is taken separately, stating the (SMM M10 M5)
It & sd (1.4) backg to walls, width > 300, fitd., th 12 , on bwk, curved to rod of 3.23 m
Terrazzo in situ pier ling To walls, faces th width < 10 , a.b.d. pier retns
It. & sf (1.4) backing to walls, width th < 300 12 on bwk
Examples cont Ddt both last
Pla to walls, width > 300, lightet gyp pla a.b.d to curved suit to rad of 3.23 m &
Deduction necessary are on the the measur (5MM Gen 3.4)
The paintw separately
Painting g.s gth > 300, (1) primg it, (2) u/cs oil paint & (1) matt, tim to pla walls. 1.450 In situ finishings to areas< 300 mm wide are measured in metres as 5MM m10.1.2.10
Less beam
2/ 1.23
pier faces
2/2/ 1.23
pier retns Rounded angles are measured
2/ 0.22 1.23
225 1.225 Pla to walls, width < pier In situ fini 300 lightwt gyp pla suface < 3 faces are kept se a.b.d pier measured retns (5MM M2 this distinc not apply t panitg g.a girth > paintwork 300, (1) primg ct, (2) painting is
FINISHINGS
Ceiling A logical sequence is adopted Treatment Rm for the measurement of the
3/
6.75
6.750 finishings, taking the order of 6.78 Less beam 300 ceilings, walls, skirting and 2/
6.78
3/
6.75 0.23
2) 6.450 floor
Examples 12 Pla clg, width The plasterwo Beam A 300, light ut gyp beams is class Soft & th Pla 10 o/a on to ceilings, bu sides Conc a.b.d width is < 300 measured in m Beam B (SMM M 20.2 Soft M20.D5) Beam B Soft
3.225 The work is deemed to be internal unless descried as Less3.225 7.000 eternal (SMM M20 DI), and so 225 3.450 internal work requires no 3.550 specific mention The areas of ceiling to 2/ 3.55 3.23
3.23 3.23 ¼ /22
Pla dg, width >
treatment room between the
300,
beams are calculated in waste
Light wt gypsum
the plasterwork to the teams
pla to BS 11911 Pt
has to be kept separate as the
6.78 0.30
Paintg gen surfs Gth>300,seal & Beam A Soft & 3cts white sides Emulsn Pt., pla clg Beam B Soft
The decoratio sides and siffi beams are add similar work o ceiling, where the same colo are measured
pla backg & final
in metres in metres (SMM
ct. of fin pla.
M20.2.1-2.1.0) but classified
Trowell smth
as to ceilings (SMM M20.D5)
< 300, a.b.
0.22 1.10
The description of the ceiling &
plaster includes the thickness
Paintg gen surs.
and umber of coasts and the
2/
6.55
gth.> 300, SEAL &
relevant particulars listed in
2/
6.78
3 XRS, white
(SMM M20.51-6), including
emusn pt., pla dg.
the thickness and number of
???
Ddt paintg gen Surfs., gth > 300 Emulsn [t.pla clg a.b 6.750 Less ends over Piers w/102.5 205 6.545 Rdd. L to pla, Rad, 10-100.
(beam A Beam B
coasts and the relevant
Ent. Porch 2.15 Less side lts 100 2.050
particulars listed in (SMM M20.51-6), including the kind of quality, composition and mix of materials, nature of
2.60 2.05
Tbr. Bd ling to clg with th >300, 25 wrot brit.col pine t&g.&v/jtd bdg nailed to swd battens (m/s) ext.
base, preparatory work and Paintg g.s, gth > 200, k.p.s,
painting are d to the sofit of and it is suppo piers,a s these at the bounda measured area general rules deduction is m the intersectio beams as ther involve leass vold limit of o (S,, ,20.M2 an M60.M3). Rounded angl measured in m when in the ra 100 mm radiu M20 . 16.0.0. M7) The work is d internal unles described as e (SMM K11.D M60.D1) boa the entrance p ceiling is mea m2 with a dim description an the width rang
Decorations to ceiling are measured in mw and classified as to general surfaces (SMM M60.10.1.0), with particulars given in accordance with SMM M60.51-8. painting and Beam B decorations to ceilings >3.50m 3.550 above floor level are so 3.225 described in 1.50, stages, 6.775 except in staircase area which are kept separate and so described (SMM M60.M1-M2) rubbing down is deemed to be included and does not require specific mention (SMM
discretion of t contractor and background a k11.311.0 and 13. The painting p are given in a with 5mm N6 and M60.51-8
FINISHINGS
9/ 2.05
4.86 2.76
400) 2.600 Battens are measured in metres as individual supports with a 7 + 1 dimensioned overall crosssection description (smmm G20.13.0.1.0), which include \s the method of fixed where not at the discretion of the contactor (smm G20 52). Indivdl suppts, 50 x Continue to work round the building in a logical sequence 19 impregnted. Sawn marking off each section on the schedule of finishings, as it sed. [;ugd to conc. is completed make full use pf waste for the build up of dimensions. Ent. Jall The description of the ceiling plaster is reduced by the use if 2.600 the letters ‘a.b.d.’ (as before described) as it consists of the Add cavity wall 255 same materials s use for the treatment room 2.955 For painting give particulars of the kind and quantity of Less block ptn. 100 materials, painting requirement and nature of base (smm 2.755 M60.6\51-8) It appears from M20.2 1.1.0. and the SMM 7 library of
3.31 2.55 1.91 0.45 4.29 3.00 1.3 0.88
Examples cont Ladies & Gents In building up Toilets and lobby figured dimen use whenever Lobby in preferences 1.450 scaling Less blk ptn 100 q.350 gents toilet 3.000 Less recess 450 2.550 Pla. Dg, widh > Another attern th 200, in 2ct, 10 Gents type of celing th a/o w, 8 it of toilet is used to give carlite bondg student examp finish & 2th it. Ditto different appro Of corlite recess firming descri Fin pla. Ot con. locations of th shown in wast & Ladies in identifying toilet dimensions in Painting. g.s, girth future 300, (1) pring. ct, lobby (1)glass fin, pla clg The sectional each dividing in the toilet cu < the void lim m2 presecribe Walls 5MM M20.M
it wt. gyp pla to B% 1192 pt 2 in 2cts, th
10 , o/a conc.
& 1.10 0.88
metres Decorations are described in accordance with SMM M60.1.0 1.0 and M60.51-8. The description of the acoustic tiles includes the kind. Quality and sizes of tiles, nature of base, surface treatment of joints (SMM M50.51-8) the backing from a separate item to which the same rules apply as for cement sand screeds (SMM m10.2..10)
20.600 abbreviation o surfs and g.s f general surfac girth of straigh of walling exc piers is calcul waste.
20.60 1.27
Paintg g.s, gth> 300 (1) primg at, (2) u/ce oil pt & (1) matt fin 20.60 1.42
to pla clg
Caoks
Pla clg, width > 300,
Terrazzo in situ to walls, width > 300, 1oth, of it. & grey marble chippgs (1:2), trowelled to smth fin. & pol. On it. & sal. Backg (m/s)
The terraxo da description inc appropriate pa contained in 5 M10.1.1.10. T followed by th and sand back 1.270 a similar appr Add sktg 150 the height is in 1.420 by 150 mm to the skirting. Ct. & sd (1:4) backgt walls, width > 300, fltd, th 12 , on buk
FINISHINGS
¼ /22 7/
¼ /22 7/
3.23
3.23 1.42
2/ 1.27 2/2/ 1.27
2/ 1.42
Terrazzo in situ ling to th wall, width > 300, 10 a.b.d curved to rad of 3.23m
2/
0.30 0.15
¼ /22 7/
3.23 1.45
Curved word is taken separately, stating the (SMM M10 M5)
It & sd (1.4) backg to walls, width > 300, fitd., th 12 , on bwk, curved to rod of 3.23 m
Terrazzo in situ pier ling To walls, faces th width < 10 , a.b.d. pier retns
It. & sf (1.4) backing to walls, width th < 300 12 on bwk
Examples cont Ddt both last
Pla to walls, width > 300, lightet gyp pla a.b.d to curved suit to rad of 3.23 m &
Deduction necessary are on the the measur (5MM Gen 3.4)
The paintw separately
Painting g.s gth > 300, (1) primg it, (2) u/cs oil paint & (1) matt, tim to pla walls. 1.450 In situ finishings to areas< 300 mm wide are measured in metres as 5MM m10.1.2.10
Less beam
2/ 1.23
pier faces
2/2/ 1.23
pier retns Rounded angles are measured
2/ 0.22 1.23
225 1.225 Pla to walls, width < pier In situ fini 300 lightwt gyp pla suface < 3 faces are kept se a.b.d pier measured retns (5MM M2 this distinc not apply t panitg g.a girth > paintwork 300, (1) primg ct, (2) painting is
Wee FINISHINGS
¼ /22 7/
3.28
Examples cont
ditto curved top edge to rad of 3.23 m
If the rounded angles were< 10mm radius , they would not be measured, where > 100mm radium hey are classified as curved work (5MM M10.D3)
1.23 2/2/ 1.45
rdd l pla rad 10 – 100
1.45
piers corners to rm
3/ 1.45
3/
2/2/ 1.27
rdd. L to terrazzo, rad 10-10
corners to rm piers
voids are o boundary o measured a Rounded a measured i whem in th range 10-1 (5MM M2 and M20.m Note the v height resu the 225 x 2 beam
2/2/ 1.27
20.60 1.45
Pla to walls, width > 300, lightwt gyp pla to B5 1911 pt 2 in 2 cts, th 10 o/a to bwk w. bong pla backing & final it of fin. Pla trowld fin.
& Paintgn g.s girth > 300, (1) primg it, (2)u/cs oil
The plaster above the terraxxo dado is described given the appropriate particulars from 5MM M20 1.1.1.0 and m20 51-8. the height is take from section X-X measurements are taken on the actual wall surface 9area in contact with base) not on the centre line of the plaster 5MM M20. M2) the paintwork description induces the preparation kind of paint number of coats and nature of base 5MM m60 51-
Ent. Porch 2.05 2/ 2.77
Ct & sd (1:4) backg. To wall, width > 300, th trowelled 10 on bwk, ect.
& Renderg. To walls, width> 300, tyroylean fin of
The adjust finishing f window an be taken w measuring Butings to measured i manners to (SMM M1 and the tyr is measure same rules M20.1.1.1 External w so describe
FINISHINGS
Examples cont
Ent. Hall 6 of panellg 2/4.855 9.710 2.755 Rdtn to scrn. 155 12.620 th
12.62 1.22
The dimensions are extracted from those previously calculated for ceiling of the entrance hall
Rigid sheet ling to The wall lining to the dado is th walls, width >300, 4 measured in m2 in accordance pre-finished Iroko with SMM KII.1.1.10 with a veneered plywd. dimensioned description and Decorative panellg in giving details of the types of sheets 2.44 x 1.22mw sheet, thickness, method of random vjt. On force to jointing, nature of background dado , fxd w adhesive to and method of fixing, where swd. Battens (m/s) not at the discretion of the contractor (SMM k11.51-13) vertical battens are fixed at 405)4.855 4.855 406 mm centre and at the type 12+1 2.755 and bottom of the paneling. Te 406)2.755 7.610 battans are measured in 7+1 metres, with a dimensioned overall cross-section Indivdl suppts vert. description as SMM G20 5150 x 19 battens 9. The term supports includes Impregnted battens (SMM G20.D7). Two additional vertical Sawn sud plugged top& batterns are dotted n to
5.01 1.29
Pla to walls width > 300, in 2 cts 13 th a.b.d to con blkwk & Paintg g.s gth > 300, (1) pring ct (2) u.cs oil paint & (1) math fin to pa wall
3/ 1.29
The adjust wall finish areas occu doors will when meas internal do probably w a schedule all the nec particulars
Rdd l to pla rad 10-100 Where rou (int. ls are in the 1 radius rang taken as lin Dado rail and so clas (5MM M2 and M20 M
5.01
Dado rl, 32 x 32 wrot Iroko mo, fixd w. 13 x 32 impregnated sn. Swd spld gads.
7.61
Dado rl. & grds a.b. plugd to bwk
Dado rails measured i manner to picture rail with a dim overall cro description the method where not description
5.010 block partition can be nailed direct, and so they need to be kept separate. The height of Ditto fixed to cono vert the wall plaster above the Blk ptn battens paneled dado is calculated in waste. To & Both Plasterwork to brick and ht, of pla concrete block walls is kept Less 2.770 separate, in accordance with Dado 1.220 SMM M20 SS and General Sktg. 255 rutes 8.2 the plaster particulars Rail to dado 32 1.477 contain the appropriate detains 1.293 listed in SMM M20. 51-8. this item is followed by the decorations, which include the relevant particulars listed in Pla to walls, width > SMM M60. 51-8 th 300 in 2ds 18 w. base ct of thistle bowing & sd th (1.2)11 & finishing it of fin pla 2th, stl, trowelled tp bwk
&
Painting g.s gth > 300,
polyurethane varnish.
7.61
7.61 4.86
2/
1
Conice Pla crnice, gth L125 gype pla class B to Bs 1191 pt. 1., to bk bilk & cnc. Surfs filt fin.
< 0.003mp sectional a angles mit intersectio deemed to (SMM P20
The varnis follows cla SMM M60
Conices ar in metres. length in c the base st E.O fir int. L to ola crnic girth as SM M20.19.0. & ends intern external an E.O for end to do intersectin enumerate 7.610 over the w 4.855 they occur 12.465 M31 10 & Less corners 2/85 170 Fibrous pla 12.295 however se nowadays worked ex provided th girth of the
FINISHINGS
12.30
12.30 0.09
Examples cont
Painting gen isolted surfs girth<300, (1) primg it, 2 u/cs oil point (1) matt fin to pla cornice, Ddt pla dg itwt gyp pla in 2cts to conc a.b.d & Dtt pointg g.s gth > 300, (1) pring it (2) uks oil pt & matt fin to pla dg.
It is assumed that the comice will not be continued around the return wall to be screen. The conice is separately classified for painting purposes as it is to a base different from that of the wall and ceiling and it assumed to be of a different colour, hence it become isolated surface with a girth< 300mm. It is necessary to adjust the plaster and paint work to the ceiling for the area occupied by the cornice.
7.61 0.09
Dtt pla to walls in 2cts th 13 to bwt a.b.d
The adjustment of the wall plaster and pointwork for the area of the conice follows
4.86 0.09
Dtt pla to walls in 2 cts th 13 to conc bwk a.b.d
12.47 0.09
Dtt painting g.s gth > 300 (1) primg ct. (2) u/cs oil pt & (1) matt fin to pla walls
Regardless of the area involved the wall and ceiling finishies the wall and ceiling finishings will always be deductable as the convice is on the boundary of ache area and dies not constitute a void (SMM General rules 3.4)
0.65 2.77
Ditto to xtg bk walls Ckls & R.o j. of xtg bwk to form key for Pla
4/ 2.62
4/ 2.62
6.56 2.62 3.95 2.62
Rt 2.770 Less skty. 150 2.620 Rdd. L to pla rad (clks) 10-100 Tel. cub.
Clks (gth) 2.280 1.00 2)3.280 6.560 Painting g.s girth > 500, seal & 2 its of emulsion pt, pla walls (clks. (tel cub.
Work on e surfaces is (SMM gen 13. 1-2). Surface tre masonry a in me stati and purpos of wall (SM 26.11.0) w work this i be include F10. Cid). Rounded a wall plaste separate ite they are in 100mm rad (SMM M2 and M20 M The length adjusted fo skirtings, b adjustment needed wh measuring The girth o surfaces to is calculate
to BS 1191 pt 1 of thistle browing pla & set th backg 11 & finishg ct of class B pla., 2th stt trowld to bwk (clks. Tel cug 1.100 875 1/1.975 3.950 3.63 2.77 395 2.77
taking off purposes, to avoid the duplication of items no adjustment is made for the height of the skirting as plastering may be continued behind the skirting
clks 2.280 1,000 350 3.630
Pla to walls a.b. To conc. Blkwk
(clks
Work on differing bases is kept separate (SMM M20. 55)
12.620 Ladies toilet Less 4.285 2.785 Cubs. 1.500 3.000 2.7785 2)5.785 11.570 Cubicles (gents toilets) 1.350 700 2)2.050 4.100 Cubicles (ladies toilets) 1.450 713 2)2.163 4.326
Decoration measured i accordance Mgo 1.0 1 the relevan from SMM The girths wall surfac gents and l including t are calcula It is impor all prelimi calculation how trivial seem. In the case toilets the the wall re compensat The girths and toilet c calculated referring b ceiling dim where app It might be better to pr wall tilling baking foll
Week 14
Finishing (contd.) Lobby 1.400 875 2 2.275 4.550
12.62 2.77 11.57 2.77
2/
4.10 2.77
4/
4.33 2.77
There is no skirting to deduct when calculating the height of the wall tiling, as the tiling extends to the floor (see schedule of finishings). Ceramic tiling, to walls, plain, The description of the width> 300) (gents toilet) 152 ceramic tiles contains c 152 x 6th. the cushion edged glazed (ladies appropriate particulars toilet) tile to B51281, sym. listed in SMM M40. Layout, fix. W. adhesive, & jtd 51-8, including the kind & ptd w. white (gents tubs) ct. and on ct & sd. Backg. (m/s) quality of materials, size, shape and & (ladies cubs) thickness of units, nature of base, method of fixing, and treatment and layout of joints. The cement and sand backing is measured for the full height, as a separate item, in accordance with SMM M10.1.1.1.0 and particulars as SMM
18.64
Sktgs Treatment Rm. Straight runs 20.600 odd pier faces 1/215 430 Pier retns4/102.5 410 21.440 Less drs.&archves. 1.900 900 2.800 18.640
Sktg., black in situ terrazzo, 10th & 150hi., fin. flush w. wall terrazzo above & w. 20 rod. Cove to terrazzo marin 16th. & 110 wide at junction. w. flr., on ct. & ad bed & backg. (m/s) 3.2.3 ¼/22
Ditto curved to rad of 3.23m
walls 1.91 2.77
Ddd ct. & sd. backg.(gents toilet) to conc.blk. walls & Add ditto. to xtg.bk. walls & Add r.o.j of xtg. Bk. to form key for ot. & sd. backg E.O ceramic tilg. For (gents toilet) spec. tile with I rdd. egde.
2/
2.77
required by 5MM M10.55 This isfor the backing to the existing wall in the gents toilet, while the remainder is to new block walls. An additional item is also needed to cover the preparation of the existing wall to receive the backing (5MM F10.26.1.1.0). special tiles are given in meters as extra over the work in which they occur (SMM M40.15.1.1.0), and the rounded edge tiles have been included in this category, despite the inclusion of paragraph M40.C2, whereby work to walls, ceiling beams and columns is deemed to include internal and external angles and intersections ≤ 1mm
6.710 Skrgs fxd to blkwk. Less 5.010 3 drrs. & archves 2.500 2.510
2.51
Sktg. 38 x 225 wrot iroko Chfd., fxd. W. 13 x 32 Impregnated sn.swd.spld Grds. To blkwk.
6.71
Sktg. & grds. a.b.pluge to bwk.
skirting is measured in accordance with SMM. M60.1.8.2.8 2.51 6.71 3/
1
Clear finishing., gen isoltd. Surfs., wd., gth. ≤ 300, 2 cts of polyurethane clear E. O sktg. for L.
Angles, ends, mrtres and intersections to skirting are enumerated if the skirting has a sectional areas exceeding 0.003.m2 (SMM Ps0.cl)
6.75 3.78
3.53 3.23 ¼/22 7
Treatment 12m 3.550 odd beam 225 3.775 3.225 odd beam 300 6.525 Screed to fir., fir., lev., 34 ct & sd (1:3) trowld., on conc base.
Swing drs opg) 10/
1
E. O sktg. for end.
Clk & Telephone Cubicle Clks 2/2.280 4.560 1000 Less 5.560 dr. & archves. 850 4.710 Sktg.on grds plugd to bwk. & fxd to blkwk.
The length of skirting in the cloaks and Telephone Cubicle are taken together as they are to the same specification, and this will avoid duplication of items. All timber must be adequately described, including stating whether sawn or wrot (SMM P20.S1)
Ddt lost
1.80 0.10
less sktgs 2/100
Less sktg 2/
0.22 0.10 less sktg
6.55
(piers)
6.750 200 6.550 3.775 100 3.675 3.525 100 3.125
Tel cubicle 3.650 Less dr. & archves. 800 3.150 Sktg., 25 x 150, (clks) wrot swd., fxd. w. 13 x 22 impregnated (tel cub.) sn.swd.grds. to blkwk.
1.78 3.15
2.93
4.71 3.15
sktg. & grds. a.b. plugd. tp bwk
(clks
Paintg. gen isoltd. (clks) surfs., wd., gth. ≤ 300, k.p.s., (2) ulcs & (1) tel cub)
separate the skirting items according to whether the grounds require plugging (brickwork base) or not (blockwork base) SMM P20.58). The description of paint work is to state the number of undercoats and finishing coasts, and the surfaces finish (SMM M60.55-6)
3.13 ¼/22 7
3.13 3.13 1.80 0.10
2/
0.22 0.10
abt. 500 x500 between ebonite dividg. Strips (m/s), trowelling to msth.fin& pol., on & inc., bldg., paper underlay, ld., on trowelled screed (m/s) swg.drs opa & sktg.) Ddt. last (piers)
Week 15
Dividg. strips 7.000 less sktgs. 2/100 200 6.800 3.550 6.740 less sktgs. 100 5.350 3.450 2)12.090 odd pier 215 6.045 3.665 6.750 less sktgs. 2/100 200 6.550 pier 6.660 3.125 5.350 odd beam 300 2)12.010 3.425 6.005
9/
6.80
5/
6.05
9/
Diving strip, 6 x 16 Ebonite bedded in c.m. (1:3) between terrazzo flr. Panels.
6.55 piers retns.
5/
6.01
The lengths of1he dividing strip are calculated in waste, counting the numbers of full lengths in each direction from the 3/ drawing and adjusting for the 100mm wide margin. The lengths intercept by the cured wall are averaged in length and the shorter lengths on two side of the room linking up with the curved section are then taken. Dividing strips are measured in meters with a dimensioned description as 5MM M10.24.7.1.0 In practice the separate measurement of the dividing strips in this situation might be
Ent. Hall 4..86 2.76
1.55 0.10
0.75 0.10
Screed to flr., lev., 25 ct. & sd., (1:3) fltd. On conc. base & Wd.blk flr. Lve. (ent.drs. th opg 300 x 75 x 25 . Troko wrot t &g. (dr.opgs to treatmt. Rm..clks & lobby) Pattn.w.2b.l Plain margins alrd Bedded & jtd. In (dr.opg to tel cub) Scrd. (m/s), w. machine Sanded fin., & deal, body in & cts. Of wax pol.
divdg. strip. 6 x 25, ebonite, bedded in c.n. (1:3)
All w unle (SM addi desc
Scre appr in SM desc inclu surfa float natu The bloc appr liste inclu joint to be cld). inclu prep
2/
0.10
4/
0.10
¼/22 7
3.13 2.60 2.05
scree to flr., lev., 28 ct. & sd. (1:3) trowld., on conc. Base, ext. & Quarry tile flr., plain, 152 x 152 x 22th .brown tiles to BS 1286, Type A, bedded, jtd & ptd in c.m (1:3) on trowld screed (m/s), ext.
but this would pose problems for the estimator as he needs to know the length of dividing strip required. Addition information has been included in the description as permitted by SMM General Rules 1.1 Further additions are inserted for a pair of pier returns and the cross joints at the opening for the swing doors and line of skirting, and to the single door. Curved work is kept separate, stating the radius (SMM M10.M5). The measurements of the screed to received quarry tiles are identical to those of the ceiling determined previously. The quarry tiles form a separate item to the screed and incorporate in the description the
&sd. (1:3) stl. Trowelled, on conc. base & 1.55 0.75 3/ 0.70 2.28 1.00
0.75 0.10
Liner item as SMM M40.16.4.I.0, with a dimensioned description and giving the method of fixing (SMM.M40.59). The minimum depth is taken as the thickest adjoining floor finish
(dr.opg.to gents toilet) Plastic flr. Width > 300, th lev., 300 x 300 x 25 . PVC tiles to BS 3261 Type A fxd. w. adhesive The thickness of the bed is on trowelled screed (m/s) varied according to the thickness of the finishing to provide a level surface throughout Dividg, strip 6 x 16 ebonite, bedded in c.m. The overall thickness is (1:3) dr. opg. 50m. The PVC floor tiling is measured in accordance with SMM. M50.1.1.0, including the prescribed width range. The flooring to the cloaks is followed by the dividing strip in the door opening to the gents toilet. Alternatively all strips in door openings could be taken together at the end of the floor finishings
appropriate particulars listed in SMM M40. 51 – 8. There must be adequate information for the estimator to price the work 1.00 0.88
Tel cubicle Screed to flr., lev., 47 ct & sd (1:3) stk trowelled on conc. base
& Corkl flrg., width > 300, lev., 300 x 300 x 3.2th. cork tiles, cork-0- plast checker tiles nr. 13, semiobright fin, butt jtd. &n fxd. w. copod. Adhesive on trowelled scrd. (m/s)
The trowel screed and the cork tile finishing to the telephone cubicle form two separate items, with the cork tiles fully described in accordance with SMM. M50.5 1.1.0 including the prescribed width range classification.
Ladies & gents Toilets & lobby 3.31 2.55
1.91 0.45
Screed to flr., lev., 40 ct. & sd. (1:3) gents toilet) Trowld., on conx. base & Ditto recess
The flooring to the gents and ladies toilets and the lobby can be taken together as they all have the same finishing the boundary of a floor finish is taken
0.75
