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Wind Pressure Design Verification

The document provides calculations to verify the design wind pressure and building dimensions for a project located in Jalan Semarak, Kuala Lumpur. It calculates the basic wind speed, altitude and topography factors to determine the design wind speed of 39.5 m/sec. It then calculates the effective wind speed of 71.5 m/sec and dynamic wind pressure of 3.13 kPa. It also verifies the building height, length, width and span ratio are within requirements. It then calculates the external and internal wind pressure coefficients and size effect factors to determine the design pressure of cladding components.

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Azahar Bin Hashim
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46 views1 page

Wind Pressure Design Verification

The document provides calculations to verify the design wind pressure and building dimensions for a project located in Jalan Semarak, Kuala Lumpur. It calculates the basic wind speed, altitude and topography factors to determine the design wind speed of 39.5 m/sec. It then calculates the effective wind speed of 71.5 m/sec and dynamic wind pressure of 3.13 kPa. It also verifies the building height, length, width and span ratio are within requirements. It then calculates the external and internal wind pressure coefficients and size effect factors to determine the design pressure of cladding components.

Uploaded by

Azahar Bin Hashim
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Project FELCRA Calcs.

By Azahar

Location JLN SEMARAK KL Checked

Date 03-MAR-2017 Page 3 of 17

References Calculations

3 .1 Verification on Design Wind Pressure

Basic Wind Speed V = 31.9 m/sec


( Butterworth )

Site Altitude ∆a = 50 m
Altitude Factor Sa=1+∆a = 1.05

Topography Factor S1 = 1.00

Table 3 - CP3 Grd. Roughness Factor Classification 3 S2 = 1.18


( Class A )

Statistical Factor S3 = 1.00


( Permanent Construction )

Design Wind Speed Vs = V x S1 x S2 x S3 Vs = 39.5 m/sec

Table 4 Effective Wind Speed Ve = Vs x Sb Ve = 39.5 x 1.81


Clause 3.2.3.2.2 Sb = ScTc {1 + (gt x St x Tt) + Sh} = 71.5 m/sec
2
Dynamic Wind Pressure q = k x Ve = 3.13 kPa
k = 0.613

3 .2 Verification on Building Dimensions

Height H = 130.0 m

Length L = 45.0 m

Width D = 30.0 m

Span Ratio D/H = 0.23


≤ 1

Winward Leeward Side


Table 5 External Cpe +0.85 -0.5 1.6
Table 16 Internal Cpi +0.2 -0.3 +0.2 -0.3 +0.2 -0.3
Net Cp 1.05 -0.8 1.8

Windward Wall Size Effect Factor


Diagonal Dimension = 138 m Ca = 0.79

Internal Pressure Size Effect Factor


(10 x 20 x 4.2 ) Ca = 0.82
Diagonal Dimension = 94 m

Design Pressure of Cladding Component p = 3.13 0.85 x 0.79 - 0.2 x 0.82

+p = q [(CpeCa) - (CpiCa)] = 1.6 kPa

-p = q - (CpiCa) = 2.9 kPa

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