Calculation of Wind pressure on Extrusion structure : (Closed portion only) 53 Inputs : Length of Structure : l= 53 m Width of structure : w= 40 m Height of structure : h= 31.4 m Percentage of openings : 10 % (Assumed) Basic Wind speed : Vb = 44 m/s Internal pressure co-efficient as per CL.6.2.3 of IS:875 (3)-1987
X 40 Z
Cpi = (+/-) 0.50
C
External pressure co-efficient as per Table-4 of IS:875 (3)-1987 A h/w = l/w =
0.785 1.325
B
1/2 < h/w < 3/2 1 < l/w < 3/2
Hence using External co-efficient for above calculated ratios
D
Calculation of Wind in X-Direction with internal pressure: (Wx+ve + IP)
-0.6
0.7
-1.1
-0.25
+
-0.5
=
0.2
-0.6
-0.75
-1.1
Cpe
+
Cpi
Calculation of Wind in X-Direction with Internal Suction: (Wx+ve - IS)
-0.6
0.7
-0.1
-0.25
-
0.5
-0.6
Cpe
=
1.2
0.25
-0.1
-
Cpi
Calculation of Wind in (-ve) X-Direction with internal pressure: (Wx-ve + IP)
-0.6
-0.25
-1.1
0.7
+
-0.5
=
-0.75
-0.6
0.2
-1.1
Cpe
+
Cpi
Calculation of Wind in (-ve) X-Direction with Internal Suction: (Wx-ve - IS)
-0.6
-0.25
-0.1
0.7
-
0.5
=
0.25
-0.6
-0.1
Cpe Calculation of Wind in Z-Direction with internal pressure: (Wz+ve + IP)
Cpi
0.7
-0.6
1.2
0.2
-0.6
+
-0.5
=
-1.1
-0.25
-1.1
-0.75
Cpe
+
Cpi
Calculation of Wind in Z-Direction with Internal Suction: (Wz+ve - IS)
0.7
-0.6
1.2
-0.6
-
0.5
-0.25
Cpe
=
-0.1
-0.1
0.25
-
Cpi
Calculation of Wind in (-ve) Z-Direction with internal pressure: (Wz-ve + IP)
-0.25
-0.75
-0.6
-0.6
+
-0.5
=
-1.1
-1.1
0.7
0.2
Cpe
+
Cpi
Calculation of Wind in (-ve) Z-Direction with Internal Suction: (Wz-ve - IS)
-0.25
0.25
-0.6
-0.6
-
0.5
=
-0.1
-0.1
0.7
1.2
Cpe
-
Cpi
UDL to be applied on Extenal columns of Extruder structure : Vb = 44 m/s Height K2 Pz kN/m2 10 0.98 1.12 15 1.02 1.21 20 1.05 1.28 30 1.1 1.41 50 1.15 1.54 Co-efficient values "(+/-)Cf" are defined as per Staad Axis. Basic load no : 31 Wx+ve + IP FACE -A (X-Direction) Ht Pz Eff. width Column nos (m) (kN/m2) B (m) 10 1.12 5 15 1.21 5 C5/C4/A4/A3/B2/B1 20 1.28 5 30 1.41 5 50 1.54 5 10 1.12 10 15 1.21 10 A2 20 1.28 10 30 1.41 10 50 1.54 10 FACE -B
****************************************************************************** **RESPONSE SPECTRUM ANALYSIS *AS IS 1893(IV):2005 TABLE -5 (SL no 99) TECHNOLOGICAL STRUCTURE IS IN CATEGORY 2 *ZONE FACTOR (AS PER IS 1893(I):2002 ANNEX E) : Z = 0.16(=1 FOR SITE SPECTRA) *IMPORTANCE FACTOR (AS PER IS 1893(IV):2005 TABLE 2) : I = 1.75 *RESPONSE REDUCTION FACTOR (AS PER IS 1893(IV):2005 TABLE 3) : R = 4.00 *g = 9.81 *AS PER IS 1893(IV):2005 CL 8.3.1 USING SITE SPECTRA :I/R = 0.45 *TIME PERIOD BY STADD = 1.15 secs = SA/G = 0.137 * AH2 = (I/R)*(Sa/g) = (1.75/4)x(0.137) ** AH2 = 0.06
**TIME PERIOD BY EMPERICAL FORMULA **Ta = 0.085*40.75^0.75 => 1.37 => Sa/g = 1.4 x (1.67/1.37) = 1.7 *HORZ SEISMIC CO-EFF => AH1 = (Z/2) x (I/R) x (Sa/g) * = (0.16/2) x (1.75/4) x (1.7) * = 0.06 ***AH1/AH2 = 0.06/0.06 = 1.0 **HENCE ACC SCALE FACTOR FOR SITE SPECTRA (SA/G) = 1 x 9.81 = 9.81 ****************************************************** SPECTRUM SRSS 1893 TOR X 0.45 ACC SCALE 9.81 DAMP 0.02
*************
Calculation of Wind pressure on Extrusion structure : (Closed portion only) 53 Inputs : Length of Structure : l= 53 m Width of structure : w= 40 m Height of structure : h= 31.4 m Percentage of openings : 12 % Basic Wind speed : Vb = 44 m/s Internal pressure co-efficient as per CL.6.2.3 of IS:875 (3)-1987
X 40 Z
Cpi = (+/-) 0.50
C
External pressure co-efficient as per Table-4 of IS:875 (3)-1987 A h/w = l/w =
0.785 1.325
B
1/2 < h/w < 3/2 1 < l/w < 3/2 D
Hence using External co-efficient for above calculated ratios Calculation of Wind in X-Direction with internal pressure: (Wx+ve + IP)
-0.6
0.7
-1.1
-0.25
+
-0.5
=
0.2
-0.6
-0.75
-1.1
Cpe
+
Cpi
Calculation of Wind in X-Direction with Internal Suction: (Wx+ve - IS)
-0.6
0.7
-0.1
-0.25
-
0.5
-0.6
Cpe
=
1.2
0.25
-0.1
-
Cpi
Calculation of Wind in (-ve) X-Direction with internal pressure: (Wx-ve + IP)
-0.6
-0.25
-1.1
0.7
+
-0.5
=
-0.75
-0.6
0.2
-1.1
Cpe
+
Cpi
Calculation of Wind in (-ve) X-Direction with Internal Suction: (Wx-ve - IS)
-0.6
-0.25
-0.1
0.7
-
0.5
=
0.25
-0.6
-0.1
Cpe Calculation of Wind in Z-Direction with internal pressure: (Wz+ve + IP)
Cpi
0.7
-0.6
1.2
0.2
-0.6
+
-0.5
=
-1.1
-0.25
-1.1
-0.75
Cpe
+
Cpi
Calculation of Wind in Z-Direction with Internal Suction: (Wz+ve - IS)
0.7
-0.6
1.2
-0.6
-
0.5
=
-0.1
-0.25
0.25
Cpe Calculation of Wind in (-ve) Z-Direction with internal pressure: (Wz-ve + IP)
Cpi
-0.25
-0.6
-0.75
-0.6
+
-0.5
0.7
Cpe
-0.1
=
-1.1
-1.1
0.2
+
Cpi
Calculation of Wind in (-ve) Z-Direction with Internal Suction: (Wz-ve - IS)
-0.25
0.25
-0.6
-0.6
-
0.5
=
0.7
Cpe
-0.1
1.2
-
Cpi
UDL to be applied on Extenal columns of Extruder structure : Vb = 44 m/s Height K2 Pz kN/m2 10 0.99 1.14 15 1.03 1.23 20 1.06 1.31 30 1.09 1.38 50 1.14 1.51 Co-efficient values "(+/-)Cf" are defined as per Staad Axis.
Node Max Fx Min Fx Max Fy Min Fy Max Fz Min Fz Max Mx Min Mx Max My Min My Max Mz Min Mz
393 393 393 393 393 393 393 393 393 393 393 393
L/C 167 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TE -1 ALX 1 ALZ -1 EX -1 EQX 114 0.9 DL 0.9 PE 0.9 EE 1 WX+VE - IS 1 TC 184 1 DL 1 LL 1 PT 1 ET 0.25 WX-VE + IP 113 0.9 DL 0.9 PE 0.9 EE 1 WX+VE - IS 1 TE 162 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TC 1 ALX -1 ALZ 1 WZ-VE - IS 121 0.9 DL 0.9 PE 0.9 EE 1 WZ+VE - IS 1 TE 125 0.9 DL 0.9 PE 0.9 EE 1 WZ-VE - IS 1 TE 150 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TC 1 ALX 1 ALZ 1 WZ+VE + IP 150 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TC 1 ALX 1 ALZ 1 WZ+VE + IP 175 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TE 1 ALX -1 ALZ -1 EZ -1 EQZ 114 0.9 DL 0.9 PE 0.9 EE 1 WX+VE - IS 1 TC 167 1 DL 1 LL 1 PO 1 EO 1 EFL 1 TE -1 ALX 1 ALZ -1 EX -1 EQX
Horizontal Vertical Horizontal L/C Fx kN Fy kN Fz kN 2 EARTHQUAKE LOAD 60.15 IN Z184.524 - DIRECTION 36.66 (EZ) 2 EARTHQUAKE53.154 LOAD IN1192.194 Z - DIRECTION 124.757 (EZ) 2 EARTHQUAKE84.656 LOAD IN Z906.234 - DIRECTION117.45 (EZ) 2 EARTHQUAKE34.632 LOAD IN Z203.176 - DIRECTION49.418 (EZ) 2 EARTHQUAKE 102.275 LOAD IN1226.757 Z - DIRECTION159.22 (EZ) 2 EARTHQUAKE LOAD0 IN Z - DIRECTION 0 (EZ) 0 2 EARTHQUAKE37.409 LOAD IN Z 57.881 - DIRECTION44.692 (EZ) 2 EARTHQUAKE47.509 LOAD IN Z892.387 - DIRECTION 153.957 (EZ) 2 EARTHQUAKE24.981 LOAD IN Z756.347 - DIRECTION 143.136 (EZ) 2 EARTHQUAKE13.361 LOAD IN Z141.401 - DIRECTION68.857 (EZ) 2 EARTHQUAKE22.021 LOAD IN Z989.955 - DIRECTION191.08 (EZ) 2 EARTHQUAKE LOAD0 IN Z - DIRECTION 0 (EZ) 0 2 EARTHQUAKE LOAD 8.694 IN Z 26.483 - DIRECTION24.632 (EZ) 2 EARTHQUAKE LOAD 6.541 IN Z 42.139 - DIRECTION43.863 (EZ) 2 EARTHQUAKE LOAD 7.463 IN Z 72.715 - DIRECTION45.206 (EZ) 2 EARTHQUAKE LOAD 9.292 IN Z - 79.17 DIRECTION43.085 (EZ) 2 EARTHQUAKE LOAD 6.59 IN Z 68.478 - DIRECTION 53.45 (EZ) 2 EARTHQUAKE LOAD 5.66 IN Z171.197 - DIRECTION 215.639 (EZ) 2 EARTHQUAKE LOAD 6.596 IN Z 17.212 - DIRECTION12.085 (EZ) 2 EARTHQUAKE LOAD 2.065 IN Z - 6.272 DIRECTION17.911 (EZ) 2 EARTHQUAKE LOAD 3.149 IN Z - 2.399 DIRECTION 29.99 (EZ) 2 EARTHQUAKE LOAD 3.978 IN Z 25.616 - DIRECTION41.127 (EZ) 2 EARTHQUAKE LOAD 3.095 IN Z 14.318 - DIRECTION46.779 (EZ) 2 EARTHQUAKE LOAD 2.851 IN Z 82.616 - DIRECTION 168.327 (EZ) 2 EARTHQUAKE LOAD 3.123 IN Z 16.581 - DIRECTION12.943 (EZ) 2 EARTHQUAKE LOAD 8.268 IN Z136.451 - DIRECTION20.525 (EZ) 2 EARTHQUAKE LOAD 8.728 IN Z123.156 - DIRECTION34.677 (EZ) 2 EARTHQUAKE LOAD 6.271 IN Z 54.848 - DIRECTION39.762 (EZ) 2 EARTHQUAKE LOAD 8.595 IN Z175.969 - DIRECTION52.238 (EZ) 2 EARTHQUAKE LOAD 4.788 IN Z192.217 - DIRECTION89.322 (EZ) 2 EARTHQUAKE17.853 LOAD IN Z 48.177 - DIRECTION 5.241 (EZ) 2 EARTHQUAKE LOAD 8.082 IN Z 14.857 - DIRECTION 9.226 (EZ) 2 EARTHQUAKE LOAD 3.308 IN Z - 7.831 DIRECTION 6.939 (EZ) 2 EARTHQUAKE67.196 LOAD IN1338.815 Z - DIRECTION 50.14 (EZ) 2 EARTHQUAKE20.193 LOAD IN1071.197 Z - DIRECTION23.859 (EZ) 2 EARTHQUAKE LOAD 1.292 IN Z - 9.509 DIRECTION 6.591 (EZ) 2 EARTHQUAKE LOAD 0.685 IN Z 23.807 - DIRECTION14.458 (EZ) 2 EARTHQUAKE LOAD 1.241 IN Z - 36.33 DIRECTION22.918 (EZ) 2 EARTHQUAKE LOAD 0.766 IN Z 53.262 - DIRECTION34.385 (EZ) 2 EARTHQUAKE LOAD 0.595 IN Z 62.676 - DIRECTION39.998 (EZ) 2 EARTHQUAKE LOAD 1.283 IN Z 34.946 - DIRECTION21.848 (EZ) 2 EARTHQUAKE LOAD 1.176 IN Z - 3.295 DIRECTION 1.793 (EZ) 2 EARTHQUAKE LOAD 1.772 IN Z - 2.056 DIRECTION 1.908 (EZ)
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