1
Assignment #10
Problems: all but 10A, B, & C from Ambrose & Tripeny, Chapters 12 & 13, pgs 405, 428 & 429.
Note: Problems marked with a * have been altered with respect to the problem stated in the text.
10A) Determine the capacity of the welded connection
shown. The weld size is 3/16 in.. Assume the base metal
is A36 steel and electrodes are E70XX in each problem.
Use L = 4.5”. (LRFD connection analysis)
Partial answers to check with:
Pn-v = 58.5 k,
Pn-t = 50.625 k
Problem 12.2.D. Using data from Table 12.1, select the lightest steel deck for the Two-span
condition, span of 6 ft, total load of 50 psf. (decking design charts)
Partial answers to check with: WR22
10B) For the singly reinforced concrete beam sections described below, determine
i) depth of the compressive stress block
ii) acceptability of reinforcement ratio to minimum and maximums
iii) design moment capacity. (reinforced concrete beam analysis)
1) fy = 60 ksi f’c = 6000 psi As = 7.07 in2 b = 16 in d = 30 in
2) fy = 60 ksi f’c = 5000 psi As = 3.01 in2 b = 12 in d = 20 in
Partial answers to check with: 1.i) a = 5.20 in, ii) 0.0039 >
= 0.0147 < 0.027,
iii)
Mn = 872 k-ft; 2.) a = 3.54 in, ii) 0.0035 >
= 0.0125 < 0.024, iii)
Mn = 247 k-ft
Problem 13.3.C. USE US UNITS. Find the area of steel reinforcement required and select the
bars for the beam in Problem 13.3.A if the section dimensions are b = 16 in [406 mm], and d =
32 in. [813 mm]. (Problem 13.3.A is listed NEXT.) (reinforced concrete beam design)
Partial answers to check with: 6- #6 (least area)
MORE NEXT PAGE
(15%)
(10%)
(15%)
(15%)
docsity.com
