****INSTANT DOWNLOAD****PDF****Solutions Manual for Structural Steel Design (3rd Edition, 2020) by Aghayere – Covers All 13 Chapters

All13 ChaptersCovered
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SOLUTIONS

, Contents
Chapter 1............................................................................................................................................ 1
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Chapter 2............................................................................................................................................ 6
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Chapter 3............................................................................................................................................ 23
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Chapter 4............................................................................................................................................ 41
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Chapter 5............................................................................................................................................ 55
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Chapter 6............................................................................................................................................ 62
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Chapter 7............................................................................................................................................ 74
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Chapter 8............................................................................................................................................ 84
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Chapter 9............................................................................................................................................ 92
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Chapter 10...........................................................................................................................................109
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Chapter 11...........................................................................................................................................119
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Chapter 12...........................................................................................................................................137
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Chapter 13...........................................................................................................................................154
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Appendix B ......................................................................................................................................... 159
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,Problem 1-4 v




The size and cross-sectional areas are obtained from Part 1 of the AISCM as follows:
v v v v v v v v v v v v v v




Size Self-weight (lb/ft.) v Cross-sectional area (in2) v v




W14x22 22 6.49
W21x44 44 13.0
HSS 6x6x½ v 35.11 9.74
L6x4x½ 16.2 4.75
C12x30 30 8.81
WT18x128 128 37.7


Problem 1-5 v




a)

Element A y Ay I d = y-y
v v v
I + Ad2
v v




top flange v 21 26.25 551.25 3.94 -12.75 3418
web 21 13.5 283.5 1008 0 1008
bot flange v 21 0.75 15.75 3.94 12.75 3418
= v 63 in.2 v 850.5 I = 7844 in.4
v v v




Ay 850.5
y= = = 13.5 in.
v v


v v v v v




A 63
Self weight = (63/144)(490 lb/ft3) = 214 lb/ft.
v v v v v v v




b)

Element A y Ay I d = y-y
v v v
I + Ad2
v v




top plate v 2.63 18.26 47.93 0.03 -9.04 214.3
beam 10.3 9.23 95.02 510 0 510
bot plate v 2.63 0.188 0.49 0.03 9.04 214.3
= v 15.55 in.2 v 143.4 I = 939 in.4
v v v




Ay 143.4
y= = = 9.23 in.
v v


v v v v v
v



A 15.55
Self weight = (15.55/144)(490 lb/ft3) = 52.9 lb/ft.
v v v v v v v




c) From AISCM Table 1-20, Ix = 314 in.4
v v v v v v v v




Area = 13.8 in2 v v v




Self weight = 47.1 lb/ft. v v v v




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, Problem 1-7 v




Plot the idealized stress-strain diagram for a 6-in. wide by ½-in. thick plate and a 6-in. wide by 1-in. thick plate
v v v v v v v v v v v v v v v v v v v v




of ASTM A36 steel. Assume that the original length between two points on the specimen over which the
v v v v v v v v v v v v v v v v v v




elongation will be measured (i.e. the gage length) is 2-in.
v v v v v v v v v v




Solution:

Gage length, Lo = 2 in. v v v v v




For 6 x ½-in. plate, Area = (6 in.)(½ in.) = 3 in2 E =
v v v v v v v v v v v v v v




29,000 ksi
v v




P Stress = P/A v v Strain,  = P/EA v v v Elongation, Lo = Strain x gage length = Lo
v v v v v v v v




(kips) (ksi) (in.)
0 0 0 0
20 6.67 0.00023 0.00046
40 13.33 0.00046 0.00092
60 20.0 0.00069 0.00138
80 26.67 0.00092 0.00184
100 33.33 0.00111 0.00222
108 36.0 0.00124 0.00248



For 6 x 1-in. plate, Area = (6 in.)(1 in.) = 6 in2
v v v v v v v v v v v v




P Stress = P/A v v Strain,  = P/EA v v v Elongation, Lo = Strain x gage length = Lo
v v v v v v v v




(kips) (ksi) (in.)
0 0 0 0
40 6.67 0.00023 0.00046
80 13.33 0.00046 0.00092
120 20.0 0.00069 0.00138
160 26.67 0.00092 0.00184
200 33.33 0.00111 0.00222
216 36.0 0.00124 0.00248


Problem 1-8 v




Determine the most economical layout of the roof framing (joists and girders) and the gage
v v v v v v v v v v v v v v




(thickness) of the roof deck for a building with a 25 ft x 35 ft typical bay size. The total roof dead load is
v v v v v v v v v v v v v v v v v v v v v v v v




v25 psf and the snow load is 35 psf. Assume a 1½” deep galvanized wide rib deck and an estimated
v v v v v v v v v v v v v v v v v v v




weight of roof framing of 6 psf.
v v v v v v v




*Assume beams (or joists) span the 35’ direction
v v v v v v v




* Assume 3-span condition v v




*Total roof load = (25psf + 35psf) – 6psf = 54psf
v v v v v v v v v v




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