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DESIGN OF STEEL TRUSS MARK : T1Project : TWO STOREY RESIDENTIAL BLDG.

Location : INITAO, MISAMIS ORIENTAL

Owner : BARRYMORE A. ROA Page 1 of 1

DESIGN DATA

Span of Truss 13.00 m

Depth 4.00 m

Fy 248 MPa

E 200,000 MPa

Design of TOP/BOTTOM CHORD

Design Load :

Axial : P 84.88 KN Tension

114.82 KN Compression

Shear : V - KN

Moment : M 0.11 KN-m

Top/Bottom Chord Data :

Section = 3

A = 916 mm2 C = 125.98

I = 233,090 mm4 k = 1.00

r = 16 mm Lu = 500.00 mm

c1 = 14 mm c2 = 36 mm

FS = 1.76 KLu/Cr = 0.25

Stresses

Allowable

Fa = 140.97 MPa fa = 125.33 MPa

Fb = 148.80 MPa fb = 6.65 MPa

Ft = 124.00 MPa ft = 92.65 Mpa

fa/Fa + fb/Fb = 0.93 OK!

DESIGN OF WEB MEMBERS

Design Load :

Axial : P 53.49 KN Tension

42.81 KN Compression

Shear : V - KN

Moment : M - KN-m

Web Members Data :

Section = 15

A = 342 mm2 C = 125.98

I = 45,785 mm4 k = 1.00

r = 11 mm Lu = 637.00 mm

c1 = 12 mm c2 = 28 mm

FS = 1.82 KLu/Cr = 0.44

Stresses

Allowable

Fa = 136.13 MPa fa = 125.20 MPa

Fb = 148.80 MPa fb = 0.00 MPa

Ft = 124.00 MPa ft = 156.43 Mpa

fa/Fa + fb/Fb = 0.92 OK!

Actual

Actual

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Area Moment of Inertia Raduis of Gyration Centroid x, or y

2L 50x50x6.0 1 1,213 1 291,362 1 15 1 15

2L 63x63x6.0 2 1,535 2 586,886 2 27 2 18

2L 50x50x4.8 3 916 3 233,090 3 16 3 14

2L 50x50x3.2 4 955 4 158,168 4 16 4 14

2L 40x40x6.0 5 890 5 116,545 5 11 5 12

2L 40x40x4.8 6 684 6 91,571 6 11 6 12

2L 40x40x3.2 7 465 7 64,932 7 12 7 11

2L 25x25x6.0 8 568 8 30,801 8 7 8 9

2L 25x25x4.8 9 439 9 24,974 9 8 9 8

2L 25x25x3.2 10 297 10 18,314 10 8 10 8L 50x50x6.0 11 606 11 145,681 11 15 11 15

L 50x50x4.8 12 458 12 116,545 12 16 12 14

L 50x50x3.2 13 477 13 79,084 13 16 13 14

L 40x40x6.0 14 445 14 58,272 14 11 14 12

L 40x40x4.8 15 342 15 45,785 15 11 15 12

L 40x40x3.2 16 232 16 32,466 16 12 16 11

L 25x25x6.0 17 284 17 15,401 17 7 17 9

L 25x25x4.8 18 219 18 12,487 18 8 18 8

L 25x25x3.2 19 148 19 9,157 19 8 19 8

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63.5

1 35

2 32

3 36

4 36

5 28

6 28

7 29

8 16

9 17 0.716827656

10 17 18.2074224711 35

12 36

13 36

14 28

15 28

16 29

17 16

18 17

19 17