Structural Calculation SheetJob Job no
gngPart of structure : Calc sheet no
Dwg ref Checked by Date
5/8/2015
MEMBERS
REF
(A) BUILDING GEOMETRY DATA:
b = 40 m
Building Height d = 20 m
H = 96 m
(B) WIND LOAD PARAMETERS
Basic Wind Speed Vs = 35 (m/s)
Topographic Factor S1 = 0.9
Ground Roughness Factor S2 =
Structure Life Factor S3 = 1.0
Charact. Wind Pressure wk = 0.613 Vs2
(kN/m2)
(C) FORCE COEFFICIENTS Cf FOR RECT. CLAD BLDG WITH FLAT ROOF
40 m
20 m
l / w = 2.0 l / w = 2.0
b / d = 2.0 d / b = 0.5
H / b = 2.4 H / d = 4.8
C fy = 1.15 C fx = 0.9
(D) NOTIONAL LOAD PARAMETERS
14 kN/m2
building size class
ground roughness category
Greater horizontal dimension of bldg, l =
Along X-direction:
varies with height above ground
Dimension of the building normal to the wind
Dimension of the building in
the direction of the wind
and
c. Steep sided, enclosed valleys sheltered from all winds
Calculations by
Lesser horizontal dimension of bldg, w =
Refer CP 3 : Chapter V : Part 2 : 1972
Lateral Load Analysis
Assume Average Dead Load Intensity per floor =
Along Y-direction:
(1) Open country with no obstructions
Class B: Greatest horizontal dimension or greatest vertical
dimension less than
Stack 1CALCULATIONSCALCULATIONS
wind
wind
Y
X
Structural Calculation SheetJob Job no
gngPart of structure : Calc sheet no
Dwg ref Checked by Date
5/8/2015
MEMBERS
REF
Calculations by
Lateral Load Analysis
Stack 1CALCULATIONSCALCULATIONS
(E) LATERAL LOAD SUMMARY TABLE:
Storey Floor Ht Sty Ht. S2 Fy Fy x H Fx Fx x H CFA N N x H
Level (m) H (m) (kN) (kNm) (m) (kNm) (m2) (kN) (kNm)
1 sty 3.2 3.2 0.83 62 197 24 77 400 84 269
2 sty 3.2 6.4 0.95 81 517 32 202 400 84 538
3 sty 3.2 9.6 0.95 81 776 32 304 400 84 806
4 sty 3.2 12.8 0.99 88 1,123 34 440 400 84 1,075
5 sty 3.2 16.0 1.01 91 1,461 36 572 400 84 1,344
6 sty 3.2 19.2 1.01 91 1,754 36 686 400 84 1,613
7 sty 3.2 22.4 1.05 99 2,211 39 865 400 84 1,882
8 sty 3.2 25.6 1.05 99 2,527 39 989 400 84 2,150
9 sty 3.2 28.8 1.05 99 2,843 39 1,112 400 84 2,419
10 sty 3.2 32.0 1.08 104 3,342 41 1,308 400 84 2,688
11 sty 3.2 35.2 1.08 104 3,676 41 1,438 400 84 2,957
12 sty 3.2 38.4 1.08 104 4,010 41 1,569 400 84 3,226
13 sty 3.2 41.6 1.10 108 4,507 42 1,764 400 84 3,494
14 sty 3.2 44.8 1.10 108 4,853 42 1,899 400 84 3,763
15 sty 3.2 48.0 1.10 108 5,200 42 2,035 400 84 4,032
16 sty 3.2 51.2 1.12 112 5,750 44 2,250 400 84 4,301
17 sty 3.2 54.4 1.12 112 6,110 44 2,391 400 84 4,570
18 sty 3.2 57.6 1.12 112 6,469 44 2,531 400 84 4,838
19 sty 3.2 60.8 1.15 118 7,199 46 2,817 400 84 5,107
20 sty 3.2 64.0 1.15 118 7,578 46 2,965 400 84 5,376
21 sty 3.2 67.2 1.15 118 7,957 46 3,114 400 84 5,645
22 sty 3.2 70.4 1.15 118 8,336 46 3,262 400 84 5,914
23 sty 3.2 73.6 1.15 118 8,715 46 3,410 400 84 6,182
24 sty 3.2 76.8 1.15 118 9,094 46 3,558 400 84 6,451
25 sty 3.2 80.0 1.15 118 9,473 46 3,707 400 84 6,720
26 sty 3.2 83.2 1.17 123 10,197 48 3,990 400 84 6,989
27 sty 3.2 86.4 1.17 123 10,589 48 4,144 400 84 7,258
28 sty 3.2 89.6 1.17 123 10,982 48 4,297 400 84 7,526
29 sty 3.2 92.8 1.17 123 11,374 48 4,451 400 84 7,795
30 sty 3.2 96.0 1.17 123 11,766 48 4,604 400 84 8,064
3,207 170,588 1,255 66,752 2,520 124,992
TOTAL BASE MOMENT DUE TO WIND Fx = 66,752 kNm
TOTAL BASE MOMENT DUE TO WIND Fy = 170,588 kNm
TOTAL BASE MOMENT DUE TO NOTIONAL LOAD = 89,280 kNm
Conclusion:
Case (ii) - Wind Loads in the y-dir govern !!
Case (i)
Case (ii)
Case (iii)
