speed of 39 m/sec

Assume i] Normal permeability, Cpi=+0.2

ii] External wind co-eff k$_{1}=1$, k$_{2}$=0.91, k$_{3}$=1 used bolted taint connection

Geometry of Truss:

Rise R=tan30$^{\circ}\times$4.5 =2.6m

Panel length =$\frac{25.2}{3}$=1.73

C.c spacing of truss =4m(given)

c/c spacing of purline=1.73

load calculation per panel point

Dl per panel point ... on plan Area

Plan Area=[1.73 cos 30]$\times 4-6m^{2}$

weight of G.I sheet =150Pa

Weight of purline =100Pa

self weight of truss =[$\frac{l}{3}+5]\times $10pa

=[$\frac{9}{8}+5]\times $ 10

=80 Pa

Total D.L =330 Pa[if bracing is given take 20-80p]

Total D.L on each intermediate panel point

=330$\times$6=1980N

=2kN

Total D.L on each end panel point=$\frac{2}{2}$=1kN

2] Line load per panel point ...[on plan]

L.L on purline=750-[$\theta-10^{\circ}\times $20]Pa

=750-[30$^{\circ}-10^{\circ}]\times 20$

=350 Pa $\lt$400Pa

Take L.L intensity =$\frac{2}{3}\times$L.L on purline

=$\frac{2}{3}\times 400$=266.67 Pa

Total L.L on each intermediate panel point

=266.67$\times$6

=1600N.=1.6kN

Total L.L on end panel point =$\frac{1.6}{2}=$0.8kN

3) Wind load calculation per panel PL

on sloping area

Design wind speed Vz=Vb$\times k_{1}\times k_{2}\times,k_{3}$

=39$\times 1\times 0.91\times$1

=35.49m/sec