Problem 3 The W12 x 53 tension member shown in Figure 5 has two rows of three 25-mm-diameter A325N bolts in each flange. Assuming ASTM A572 (Fy = 345 MPa, Fu = 448 MPa) steel and considering the strength of the W12 x 53 only, a) Determine the LRFD design tension strength ØP of the W12 x 53, b) Determine the service dead load that can be supported if there is no live load, and c) If a service dead load, PDL= 445 KN is applied, what is the maximum service live load, Pu, that can be supported? 5½" D ab dD ab D section b a. side view Properties of W 12 x 53 Ag = 10064.5 mm² d = 307.34 mm b+= 254 mm tr = 14.61 mm Figure 5 O O O O b. end view of bolts WT 6 X 26.5 x = 25.9 mm

Problem 3 The W12 x 53 tension member shown in Figure 5 has two rows of three 25-mm-diameter A325N bolts in each flange. Assuming ASTM A572 (Fy = 345 MPa, Fu = 448 MPa) steel and considering the strength of the W12 x 53 only, a) Determine the LRFD design tension strength ØP of the W12 x 53, b) Determine the service dead load that can be supported if there is no live load, and c) If a service dead load, PDL= 445 KN is applied, what is the maximum service live load, Pu, that can be supported? 5½" D ab dD ab D section b a. side view Properties of W 12 x 53 Ag = 10064.5 mm² d = 307.34 mm b+= 254 mm tr = 14.61 mm Figure 5 O O O O b. end view of bolts WT 6 X 26.5 x = 25.9 mm

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter7: Simple Connections

Section: Chapter Questions

Problem 7.11.10P

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Problem 3 The W12 x 53 tension member shown in Figure 5 has two rows of three 25-mm-diameter A325N bolts in each flange. Assuming ASTM A572 (Fy = 345 MPa, Fu = 448 MPa) steel and considering the strength of the W12 x 53 only, a) Determine the LRFD design tension strength ØP of the W12 x 53, b) Determine the service dead load that can be supported if there is no live load, and c) If a service dead load, PDL = 445 kN is applied, what is the maximum service live load, PL, that can be supported?
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