Wind load computations NSCP 2010 lowrise with portal method
Assignment No.2 (Wind load analysis By ASCE 7-02) Data on Design Problem (Wind load analysis) My Serial No = 33 Nature of Building: Typical Office Building Stories: 30 + 33 = 63 Stories Firs…Full description
A sample calculation done for determination of wind load according to BS6399:1997 to a rectangular building. This document determines the wind load values to be exerted to the structure
BW for Lake side Appartments Wind load Calculation
16-Nov-15
-
PRC
0
Calculation of Wind Load 1)
(As per IS 875-Part3 :1987)
Basic Site Data Height of wall Length of wall in plan Width of wall in plan Length of panel b/w columns
He L B L1
: : : :
1.8 132 120 8.5
m m m m
basic wind speed (mean hourly)
Vb
:
50
m/s
Terrain Category Class of building 2)
:
180 km/hr
: Category-2 : Class B
Dynamic Pressure (q s ) pz : 0.6 VZ2 VZ : V b x k1 x k2 x k 3 where, Vz Vb k1 k2
k3
-
-
Design wind speed Basic wind speed Risk coefficient for different classes of structure as per Table-1 k1 : 0.70 Factor as per Table-2 k2 : 0.98 Topography factor k3 : 1.00
Therefore, VZ
Dynamic pressure, pz
: 50 x 0.7 x 0.98 x 1 : 34.3 m/s
: 0.6 x (34.3)^2 2 : 705.9 N/m
(sec-5.4) (sec-5.3)
(Table - 1) (Table - 2) (Sec- 5.3.3)
BW for Lake side Appartments Wind load Calculation
16-Nov-15
-
3)
PRC
Pressure Coefficient (Cp) For low walls or hoardings, the pressure coefficient is, Windward Cf
4)
0
b/h
: :
Interpolation for Cf
73.58 1.59
Wind Load The pressure acting on wall element is Pw : p z x k x Cf : 0.706 x 0.8 x 1.59 2 Pww : 0.90 kN/m
