DESIGN OF TIMBER FLOOR JOISTS: SECTION PARAMETERS: h 240 mm
b
80 mm
TIMBER STRENGTH CLASS: GRADE C24 f m,k 24 N/mm² f v,k 4 N/mm² E 0,mean 11000 N/mm² G mean 690 N/mm² ρ mean 420 kg/m³ ρ k 350 kg/m³ EXPOSURE CONDITION: SERVICE CLASS
E-POSURE CONDITION: Go'n# f)oo$. /o)# oof$. %i!&( f*!( *))$ %*% *( *,*in$% %( o'%( $in of /)*##in, *n# *)) o%(in$%*n/($ (( %i!&( i$ +o%(/%(# fo! #i(/% (+o$'( of *%(
2
LOAD DURATION: M(#i'! %(!
k mod k def
0. 0. 1
k h
LOAD DURATION: 1 (( %o 6 !on%$ (, i!+o$(# f)oo )o*#$
STRUCTURE GEOMETR!: SPACING: 340 mm B*%%(n$ o P')in$ LATERAL ELEMENTS: NUMBER OF LOADED LAMINATIONS:
k sys
1
1.1
BEAM T!PE: Si!+)" $'++o%(#
LOAD T!PE: Unifo!" #i$%i&'%(# )o*#
LOAD APPLIED ON: Co!+($$ion (#,(
EFFECTI"E LENGTH: L 6300 mm L ef 6150 mm H slope 0 mm
α recalc.
0 deg.
α
0 deg.
H slope,recalc
0 mm
L o
6300 mm
SECTION GEOMETRICAL PARAMETERS: !" 10240000.00 mm ! y 92160000.00 mm ! or 102400000.00 mm
% " % y
256000.00 mm³ #6000.00 mm³
CRITICAL BENDING STRESS: 24.0104065 N/mm² * m,cr( 33966396.## Nmm y,cr(
E 0,0 G 0,0
#333 N/mm² 5#5 N/mm²
rel,m k cr(
0.99 0.1
m,y,d
f v,d g f(n(shes g self12e(gh g s+m & (mposed & (mposed,m3 4L4 5L4 * m,y,d y,d 6 d 7 d
% y,re& h re& b re& h re& -b re&
54#6 mm³ 209 mm 61 mm
20561
13 13.15 N/mm² 2.# N/mm² 07 kN/m² 0.09 kN/m
kN/m
0.32 kN/m 2 kN/m² 0.5 kN/m 1.1# kN/m 1.55 kN/m 10.01 N/mm² #6993#.5 Nmm 0.56 N/mm² 42.5 N
#.69 kNm
RESISTANCE TO BENDING STRESS: 9!.".#f !.".# 76; 10$01%13$15 RESISTANCE TO SHEAR STRESS: 6 d /f v,d 21; 0$56%2$# DEFLECTION DUE TO PERMANENT LOADS INCLUDING CREEP: 8 (ns 3.2# mm DEFLECTION DUE TO "ARIABLE LOADS INCLUDING CREEP: 8 f(n 9 :,; 03 ';.; able 21.326 mm TOTAL DEFLECTION INCLUDING SHEAR:
8 o
2#.064 mm
ALLO&ABLE DEFLECTION: L/:0 25.2 mm
' sec(ons ) 16#20 14640 ' op(m+m 12#49
BEARING STRENGHT FOR THE SUPPORT OF A TIBER JOIST: BEARING STRESS: 42.5 N = c,>0,d
l b ' ef mm² mm²
* c,>0,d
40 mm 3200 mm² 1.53 N/mm²
mm² DESIGN "ALUE OF THE COMPRESSI"E STRENGHT: c,>0,k
f c,>0,d
5.3 N/mm² 3.26 N/mm²
BEARING CAPACIT! CHEC': k c,>0 1 * c,>0,d/ ?k c,>0 @f c,>0,d A 046 "IBRATION: ;
