The holes are for 12 mm diameter bolts. Determine the total service load capacity if the live load is three times the dead load. The location of the centroid is 21.25 mm from the outer face of the web. a. Use LRFD. 100 100 100 100 b. Use ASD. Properties of C250 x 29.75 Ag = 2036 mm? 62.5 bf = 50 mm d = 250 mm tw = 6 mm tf = 6 mm 62.5

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Chapter2: Loads On Structures
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STEEL DESIGN
7.0 The A double-channel shape, 2C250× 29.75, of A572 Grade 50 steel is used for a built-up tension member as shown.
The holes are for 12 mm diameter bolts. Determine the total service load capacity if the live load is three times the
dead load. The location of the centroid is 21.25 mm from the outer face of the web.
a. Use LRFD.
100
100
100
100
b. Use ASD.
Properties of C250 x 29.75
Ag = 2036 mm?
62.5
bf = 50 mm
d = 250 mm
tw = 6 mm
P
te = 6 mm
62.5
3/5
Aus. a) P = 839.59 kN; b) P = 839.59 kN
8.0 From the figure shown, diameter of holes is 20 mm. Steel plates is made up of 10 mm x 250 mm with staggered
sections in the accompanying figure.
50
60
75
Fy = 248.8 MPa
Fu = 449.3 MPa
Transcribed Image Text:STEEL DESIGN 7.0 The A double-channel shape, 2C250× 29.75, of A572 Grade 50 steel is used for a built-up tension member as shown. The holes are for 12 mm diameter bolts. Determine the total service load capacity if the live load is three times the dead load. The location of the centroid is 21.25 mm from the outer face of the web. a. Use LRFD. 100 100 100 100 b. Use ASD. Properties of C250 x 29.75 Ag = 2036 mm? 62.5 bf = 50 mm d = 250 mm tw = 6 mm P te = 6 mm 62.5 3/5 Aus. a) P = 839.59 kN; b) P = 839.59 kN 8.0 From the figure shown, diameter of holes is 20 mm. Steel plates is made up of 10 mm x 250 mm with staggered sections in the accompanying figure. 50 60 75 Fy = 248.8 MPa Fu = 449.3 MPa
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