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Wind loads calculaiton per Eurocode 1 for France, Lecture notes of Civil Engineering

Delhi Institute of Pharmaceutical Sciences and ResearchCivil Engineering

To calculate wind loads as per Eurocode

Typology: Lecture notes

2018/2019

Uploaded on 11/06/2019

BCCharan
BCCharan ๐Ÿ‡ฎ๐Ÿ‡ณ

2 documents

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PROJECT : Design.by: BCC
DOC.TITLE: Check.by BCC
DOC. NO : Rev:No 0 Appr. by
WIND LOAD CALCULATIONS AS PER EN-1991-1-4
Notes
Fundamental Value of the Basic wind Velocity =24 m/s Cl. 4.2 - EC1-1-4
Directional Factor =1.0 Cl. 4.2 - EC1-1-4
Seasonal Factor =1.0 Cl. 4.2 - EC1-1-4
Basic Wind Velocity =24 m/s
Eq. 4.1 - EC1-1-4
Probability Factor for exceedence =0.95
Eq. 4.1 - EC1-1-4
Height of Structure ( top most point of rafter ) h =3.0 m
Width of Structure b =4.0 m
Length of Structure l =20.0 m
Roughness Factor =0.778
Reference Height =3 m
Fig. 7.4 - EC1-1-4
Terrain Category =2
Tab. 4.1 - EC1-1-4
Roughness length =0.05 m
Tab. 4.1 - EC1-1-4
Minimum height =2 m
Tab. 4.1 - EC1-1-4
Maximum height =200 m
Cl. 4.3.2 - EC1-1-4
Terrain Factor =0.190
Eq. 4.5 - EC1-1-4
Orography Factor =1.0
Cl. 4.3.3 - EC1-1-4
Mean Wind Velocity =18.7 m/s
Eq. 4.3 - EC1-1-4
Turbulence Intensity =0.243
Eq. 4.7 - EC1-1-4
Trubulence Factor =0.995 Cl. 4.4 - EC1-1-4
Density of Air
r
=1.161 Cl. 4.5 - EC1-1-4
Peak Velocity Pressure =546.76
Eq. 4.8 - EC1-1-4
Structural Factor =1.0 Cl. 6.2 - EC1-1-4
Roof Angle
a
=25.0 degrees
Blockage
j
= 0.00
Tab. 7.6 - EC1-1-4
Positive Overall Force Coeff = 1.00
Tab. 7.6 - EC1-1-4
Negative Overall Force Coeff = -1.60
Tab. 7.6 - EC1-1-4
-Z
Orientation of Module = Potrait
Module dimensions
L B kN No of Purlins kN/m -X +X
-1.60 1.956 0.992 -1.697 2 -0.856
1.00 1.956 0.992 1.061 2 0.535
+Z
ยท๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„ The wind load is applied by using pressure coefficient method.
ยท๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„๎˜„ The variation of wind pressure along the height of building is NOT considered.
vb,0
cdir
cseason
vb
cprob
cr(z)
z = ze
z0
zmin
zmax
kr
co(z)
vm(z)
Iv(z)
kl
kg/m3
qp(z) N/mm2
cscd
+cf
-cf
-cf
+cf

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PROJECT : Design.by: BCC DOC.TITLE: Check.by BCC DOC. NO : Rev:No 0 Appr. by WIND LOAD CALCULATIONS AS PER EN-1991-1- Notes Fundamental Value of the Basic wind Velocity = 24 m/s Cl. 4.2 - EC1-1- Directional Factor = 1.0 Cl. 4.2 - EC1-1- Seasonal Factor = 1.0 Cl. 4.2 - EC1-1- Basic Wind Velocity = 24 m/s Eq. 4.1 - EC1-1- Probability Factor for exceedence = 0.95 (^) Eq. 4.1 - EC1-1- Height of Structure ( top most point of rafter ) h = 3.0 m Width of Structure b = 4.0 m Length of Structure l = 20.0 m Roughness Factor = 0. Reference Height = 3 m Fig. 7.4 - EC1-1- Terrain Category = (^2) Tab. 4.1 - EC1-1- Roughness length = 0.05 m Tab. 4.1 - EC1-1- Minimum height = 2 m (^) Tab. 4.1 - EC1-1- Maximum height = 200 m Cl. 4.3.2 - EC1-1- Terrain Factor = 0.190 (^) Eq. 4.5 - EC1-1- Orography Factor = 1.0 (^) Cl. 4.3.3 - EC1-1- Mean Wind Velocity = 18.7 m/s Eq. 4.3 - EC1-1- Turbulence Intensity = 0.243 (^) Eq. 4.7 - EC1-1- Trubulence Factor = 0.995 (^) Cl. 4.4 - EC1-1- Density of Air r = 1.161 (^) Cl. 4.5 - EC1-1- Peak Velocity Pressure = 546.76 Eq. 4.8 - EC1-1- Structural Factor = 1.0 Cl. 6.2 - EC1-1- Roof Angle a = 25.0 degrees Blockage j = 0.00 Tab. 7.6 - EC1-1- Positive Overall Force Coeff = 1.00 Tab. 7.6 - EC1-1- Negative Overall Force Coeff = -1.60 (^) Tab. 7.6 - EC1-1- -Z Orientation of Module = Potrait Module dimensions L B kN No of Purlins kN/m -X +X -1.60 1.956 0.992 -1.697 2 -0. 1.00 1.956 0.992 1.061 2 0. +Z ยท The wind load is applied by using pressure coefficient method. ยท The variation of wind pressure along the height of building is NOT considered. v b, c dir c season v b c prob c r(z) z = ze z 0 zmin zmax k r c o(z) v m(z) I v(z) k l kg/m^3 qp(z) (^) N/mm^2 c scd +cf -cf -cf +cf