Typical Weights of Building Materials

Typical weights of building materials (weights are based on materials available in United Kingdom)

Most common materials: Material 

Blockwork Brickwork Concrete Glass Steel Timber

Weight in kN/m2 U.N.O.

Description 

Lightweight London stock  Normal reinforcement Clear float Mild Softwood

10 kN/m3 19 kN/m3 24 kN/m3 25 kN/m3 78 kN/m3 6 kN/m3

Full list of materials: Material 

A Aggregate Aluminium

Asphalt

B

Description 

Cast alloy Longstrip roofing Bronze Roofing - 2 layers Paving

Thickness/ quantity of of u nit 

0.8 mm 25 mm

Weight in kN/m2 U.N.O.

16 kN/m3 27 kN/m3 0.022 76 kN/m3 0.58 21 kN/m3

Bituminous felt roofing Bitumen Blockboard Blockwork

Books Brass Brickwork

Bronze

3 layers and vapour barrier Sheet Aerated concrete Dense aggregate Lightweight On shelves Bulk Cast Blue Engineering Fletton London stock Sand lime Cast

18 mm

C Cast stone Cement Chalk Chippboard

Chippings Clay Concrete

Coal Copper Cork F False ceiling

Sheet Sheet Flat roof finish Undisturbed Aerated Lightweight aggregate  Normal reinforced reinforced Loose lump Cast Longstrip roofing Granulated

Steel framing

18mm 22mm 1 layer

0.6 mm

0.11 11-13 kN/m3 0.11 5-9 kN/m3 20 kN/m3 7-14 kN/m3 7 kN/m3 8-11 kN/m3 85 kN/m3 24 kN/m3 22 kN/m3 18 kN/m3 19 kN/m3 21 kN/m3 83 kN/m3

23 kN/m3 15 kN/m3 22 kN/m3 7 kN/m3 0.12 0.15 0.05 19 kN/m3 10 kN/m3 18 kN/m3 24 kN/m3 9 kN/m3 87 kN/m3 0.05 1 kN/m3

0.1

Felt

G Glass

Glass wool Gold Granite Gravel

H Hardboard Hardcore Hardwood

Hollow clay pot slabs

I Insulation

Iron Ivory

Roofing underlay Insulating 3 layer plus chippings

50 mm

0.015 0.05 0.35

100 mm

Loose Undisturbed

16 kN/m3 25 kN/m3 0.3 0.52 0.01 194 kN/m3 27.3 kN/m3 16 kN/m3 21 kN/m3

Greenheart Oak Iroko, teak Mahogany Including ribs & mortar (but not topping)

6-8 kN/m3 19 kN/m3 10 kN/m3 8 kN/m3 7 kN/m3 6 kN/m3 12 kN/m3 15 kN/m3

Crushed/refuse Clear float Single glazing Double glazing Quilt

Glass fibre Glass fibre Polystyrene Rockwool Cast Wrought

300 mm thick overall 100 mm thick overall

100 mm 150 mm 25 mm

0.02 0.03 0.04 0.01 72 kN/m3 77 kN/m3 19 kN/m3

L Lead

Lime

Linoleum M Macadam Magnesium Metal roof cladding MDF Mercury Mortar Mud P Partitions

Patent glazing Pavement stones Peat Plaster

Cast Sheet Sheet Hydrate (bags) Lump/quick (powder) Mortar (putty) Sheet

1.8 mm 3.2 mm

3.2 mm

Paving

114 kN/m3 0.21 0.36 6 kN/m3 10 kN/m3 18 kN/m3 0.05

21 kN/m3 18 kN/m3 0.07 8 kN/m3 136 kN/m3 17-18 kN/m3 17-20 kN/m3

Alloys Sheet

Plastered brick Medium dense plastered block Plaster board on timber stud Single glazed Double glazed Cast iron or concrete framed

102 + 2 x 13 mm 100 + 2 x 13 mm 100 + 2 x 13 mm

Plasterboard Plasterboard Wallboard and skim coat Lath and plaster Traditional lime plaster Traditional lath + plaster ceiling Plasterboard on timber stud Plastered brick 102 + 2 x 13mm

12.5 mm 19 mm 13 mm 19 mm

100 mm

2.6 2.0 0.35 0.26-0.3 0.52 1.5 11 kN/m3 0.09 0.15 0.12 0.25 20 kN/m3 0.5 0.35 2.6

Plastic Plywood

Polystyrene Precast concrete

Q Quarry tiles R  Raised floors

Ribbed slab Roofing tiles

S Sand

Screed

Plastered medium density block Corrugated Sheet Sheet Expanded sheet Beam and block + 50 mm topping Hollowcore plank Hollowcore plank Hollowcore plank Solid plank plus 50 mm topping

150-225 mm 150 mm 200 mm 250-450 mm 75-300 mm

2.0 0.04 7 kN/m3 0.08 0.12 0.2 kN/m3 1.8-3.3 2.4 2.8 3.7-5.5 3.7-7.4

Including mortar & bedding

12.5 mm

0.32

12.5 mm 19 mm

Heavy duty Medium weight Lightweight 250-500 mm Clay - plain Clay pantile Concrete Slate

Dry, loose Wet, compact Sand/cement 50 mm 75 mm

Slate Snow Softwood

Slab Fresh Wet, compacted

0.5 0.4 0.3 4.0-5.7 0.77 0.42 0.51 0.3

16 kN/m3 19 kN/m3 22 kN/m3 1.15 1.8 28 kN/m3 1 kN/m3 3 kN/m3 6 kN/m3

Soils

Stainless steel roofing Steel Stone Granite Limestone

Marble Sandstone

Slate Suspended ceiling

T Timber

Terracotta Terrazzo Thatch W

T&G (Tongue and Groove) T&G (Tongue and Groove) Battens for slating & tiling 25 mm T&G boards on 100x50 timber  joists @ 400 crs 25 mm T&G boards on 250x50 timber  joists @ 400 crs Loose sand & gravels Dense sand & gravels Soft/firm clays & silts Stiff clays and silts Longstrip Mild

15.5 mm 22 mm

0.09 0.12 0.03 0.23 0.33

0.4 mm

16 kN/m3 22 kN/m3 18 kN/m3 21 kN/m3 0.05 78 kN/m3

Cornish (Cornwall) Rublislaw (Grampian) Bath (Wiltshire) Mansfield (Nottinghamshire) Portland (Dorset) Italian Bramley Fell (West Yorkshire) Forest of Dean (Gloucestershire) Dalrey Dale or Kerridge (Derbyshire) Welsh Aluminium Steel

26 kN/m3 25 kN/m3 21 kN/m3 22 kN/m3 22 kN/m3 27 kN/m3 22 kN/m3 24 kN/m3 23-25 kN/m3 28 kN/m3 0.05 0.1

C16 C24

3.6 kN/m3 4.1 kN/m3 18 kN/m3 0.42 0.45

Paving Including battens

20 mm 305 mm

Waffle slab Water Woodwool slabs Z Zinc

Standard moulds Fresh

Cast Longstrip roofing

325-525 mm

0.8 mm

6.0-8.6 10 kN/m3 6 kN/m3

72 kN/m3 0.06