Structural Steel Design (6th Edition)
6th Edition
ISBN: 9780134589657
Author: Jack C. McCormac, Stephen F. Csernak
Publisher: PEARSON
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Question
Chapter 3, Problem 3.28PFS
To determine
The LRFD design strength and the ASD allowable strength of the given section
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3-28. A WT8×50 of A992 steel having two lines of 7/8-in Ø bolts as shown in Fig. P3-28.
There are 4 bolts in each line, 3 in on center.
FIGURE P3-28
- WT 8 X 50
A double-angle shape is shown in Figure 3.5. The steel is A36, and the holes are for
½/2-inch-diameter bolts. Assume that A₂ = 0.75A.
a. Determine the design tensile strength for LRFD.
b. Determine the allowable strength for ASD.
Section
215 x 3 x 16 LLBB
A PL ½ x 8 tension member is connected with six 1-inch-diameter bolts, as shown
in Figure P3.2-2. The steel is ASTM A242. Assume that A, = A, and compute the
following.
a. The design strength for LRFD.
b. The allowable strength for ASD.
PL ½ x 8
o o o
Chapter 3 Solutions
Structural Steel Design (6th Edition)
Ch. 3 - Prob. 3.1PFSCh. 3 - Prob. 3.2PFSCh. 3 - Prob. 3.3PFSCh. 3 - Prob. 3.4PFSCh. 3 - Prob. 3.5PFSCh. 3 - Prob. 3.6PFSCh. 3 - Prob. 3.7PFSCh. 3 - Prob. 3.8PFSCh. 3 - Prob. 3.9PFSCh. 3 - Prob. 3.10PFS
Ch. 3 - Prob. 3.11PFSCh. 3 - Prob. 3.12PFSCh. 3 - Prob. 3.13PFSCh. 3 - Prob. 3.14PFSCh. 3 - Prob. 3.15PFSCh. 3 - Prob. 3.16PFSCh. 3 - Prob. 3.17PFSCh. 3 - Prob. 3.18PFSCh. 3 - Prob. 3.19PFSCh. 3 - Prob. 3.20PFSCh. 3 - Prob. 3.21PFSCh. 3 - Prob. 3.22PFSCh. 3 - Prob. 3.23PFSCh. 3 - Prob. 3.24PFSCh. 3 - Prob. 3.25PFSCh. 3 - Prob. 3.26PFSCh. 3 - Prob. 3.27PFSCh. 3 - Prob. 3.28PFSCh. 3 - Prob. 3.29PFSCh. 3 - Prob. 3.30PFSCh. 3 - Prob. 3.31PFSCh. 3 - Prob. 3.32PFSCh. 3 - Prob. 3.33PFSCh. 3 - Prob. 3.34PFSCh. 3 - Determine the LRFD design strength and the ASD...Ch. 3 - Prob. 3.36PFSCh. 3 - Prob. 3.37PFS
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- 1. The tension member shown in Figure 3.4-2 is a PL 58 x 10, and the steel is A36. The bolts are 3/4-inch in diameter. a. Draw the different potential failure lines. b. Compute the effective net area. 22" 2½" 2" 4 3" *₁ 3" ✓ 2" 2. A double-channel shape, 2C10 x 20 steel, Fy = 50 ksi and Fu = 70 ksi, is used for a built-up tension member as shown in the figure. The holes are for 12-inch-diameter bolts. PNA a. Determine the design strength for LRFD. b. Determine the allowable strength for ASD. YD Shape A 2" 2" -X Area, Depth, d | 3²²-|-1 3²² | 00 "There is no elevator to success, you have to take the stairs." - Zig Ziglar God bless. Ⓒ O O O Web Thickness, tw in. in. O 4" C10-30 x25 x20 5.87 10.0 10 0.379 % x15.3 4.48 10.0 10 0.240 4 4" Table 1-5 C-Shapes Dimensions Flange Width, b₁ 2 in. in. in.2 in. C15x50 14.7 15.0 15 0.716 1168 3.72 3% 0.650 % x40 11.8 15.0 15 0.520 x33.9 10.0 15.0 15 0.400 % 14 3.52 32 0.650 % %/16 3.40 3% 0.650 % C12-30 8.81 12.0 12 0.510 4 3.17 3% x25 7.34 12.0 12…arrow_forwardA double-angle shape is shown in the figure. The steel is A36, and the holes are for 2-inch-diameter bolts. Assume that A₂ = 0.75An. Ae 1 2 Determine the design tensile strength for LRFD. Determine the allowable strength for ASD. CIVIL ENGINEERING - STEEL DESIGN AL Section 2L5 x 3 x 516 LLBBarrow_forwardA) The 3/4 in x 15 in plate has 4 rows (or horizontal lines) of bolts. Each row has 3 bolts. The bolt diameter is 7/8 in. Determine the gross area (Ag) and the net area (An) 3/4 15 O O O O O O Q O O 3" 3 27 3 784 Bolts Pet *arrow_forward
- A double-angle shape is shown. The steel is A36, and the holes are for 12 mm diameter bolts. Assume that A, = 0.75A.. a. Determine the design tensile strength for LRFD. b. Determine the allowable strength for ASD. Ag = 1560 mm² (Angle) 2L 125 x 75 x 8 LLBBarrow_forwardA double-angle shape is shown in the figure. The steel is A36, and the holes are for 1/2-inch-diameter bolts. Assume the Ae = 0.75An. Section 215 x 3 x %6 LLBB Determine the design tensile strength for LRFD. Select one: а. 66 b. 156 c. 78 d. 132arrow_forward2. A double-channel shape, 2C10 x 20 steel, Fy = 50 ksi and Fu = 70 ksi, is used for a built-up tension member as shown in the figure. The holes are for 1/2-inch-diameter bolts. a. Determine the design strength for LRFD. b. Determine the allowable strength for ASD. 2½" 2½" Shape C12x30 X25 x20.7 PNA Web Thickness, t tw 2 in.² in. in. in. C15x50 14.7 15.0 15 0.716 11/16 3/8 x40 11.8 15.0 15 0.520 2 x33.9 10.0 15.0 15 0.400 C10x30 by d Area, Depth, A d 8.81 12.0 7.34 12.0 6.08 12.0 8.81 10.0 x25 7.35 10.0 x20 5.87 10.0 x15.3 4.48 10.0 12 0.510 2 12 0.387 12 0.282 5/16 10 0.673 11/16 10 0.526%2 10 0.379 38 10 0.240 4 4" Table 1-5 C-Shapes Dimensions Width, b; in. Flange 3.72 3% 1/4 3.52 32 3/16 3.40 3% 1/4 3.17 38 3/16 3.05 3 3/16 2.94 3 4" 3/8 3.03 3 1/4 2.89 278 3/16 2.74 234 V8 2.60 258 4" 4" Average Thickness, tr in. Distance Work- k Table 0.650 %8 0.650 8 1/16 0.650 % 17/16 0.501 21% 0.501 2 1½ 0.501 2 1½ 0.436 7/16 1/16 0.436 7/16 1/16 0.436 7/16 1/16 0.436 7/16 1/16 Gage in. in.…arrow_forward
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