Solutions Manual for Structural Load Determination (IBC 2018 & 2021, ASCE/SEI 7-16) by David A. Fanella

AllChaptersCovered
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SOLUTIONS

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StructuralLoads
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2012IBCandASCE/SEI7-10 l l l l




This Solutions Manual was developed as a companion to the Structural Loads: 2012 IBC and
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ASCE/SEI 7-10 textbook. To increase understanding of this material and for its most effective
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use, readers should study the Structural Loads textbook and reference the material as they
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read through this Solutions Manual.
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ToorderadditionalcopiesoftheStructuralLoadstextbook,clickhere.
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, CHAPTER 2
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LoadCombinations l




2.1. Determine the strength design load combinations for a reinforced concrete beam on a typical
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floor of a multistory residential building using the nominal bending moments in Table 2.11. All
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bending moments are in foot-kips. Assume the live load on the floor is less than 100 psf.
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Table2.11 DesignData forProblem2.1
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External Negative l Positive InteriorNegative l




Dead load, D l l –13.3 43.9 –53.2
Liveload, L l l –12.9 42.5 –51.6


SOLUTION

Table P2.1 Summary of Load Combinations Using Strength Design for Beam in Problem 2.1
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Load Combination l




IBC Equation No. Equation Exterior Interior
Positive
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Negative
l Negative
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16-1 1.4D –18.6 61.5 –74.5
16-2 1.2D + 1.6L l l –36.6 120.7 –146.4
16-3,16-4,16-5 l l 1.2D + 0.5L l l –22.4 73.9 –89.6
16-6,16-7 l 0.9D –12.0 39.5 –47.9




2.2. Determine the strength design load combinations for a steel beam that is part of an ordinary
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moment frame in an office building using the nominal bending moments and shear forces in
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Table 2.12. All bending moments are in foot-kips and all shear forces are in kips. Assume the
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live load on the floor is less than 100 psf.
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Table2.12 DesignData forProblem2.2
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Bending Moment l Shear Force l




Support Midspan Support
Dead load, D l l –57.6 41.1 11.8
Liveload,L l l –22.5 16.2 4.6
Wind,W l  54.0
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, 2 Solutions Manual to Structural Loads
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SOLUTION

TableP2.2SummaryofLoadCombinationsUsingStrengthDesignforBeamin Problem 2.2
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Load Combination l



IBCEquation
Equation Bending Moment Shear Force
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No.
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Support Midspan Support
16-1 1.4D –80.6 57.5 16.5
16-2 1.2D + 1.6L l l –105.1 75.2 21.5
1.2D + 0.5L l l –80.4 57.4 16.5
16-3 1.2D + 0.5W l l –42.1 49.3 11.8
1.2D – 0.5W l l –96.1 49.3 16.6
1.2D + 1.0W + 0.5L l l l l –26.4 57.4 11.7
16-4
1.2D – 1.0W + 0.5L l l l l –134.4 57.4 21.3
16-5 1.2D + 0.5L l l –80.4 57.4 16.5
0.9D + 1.0W l l 2.2 37.0 5.8
16-6
0.9D – 1.0W l l –105.8 37.0 15.4
16-7 0.9D –51.8 37.0 10.6




2.3. Given the information in Problem 2.2, determine the basic allowable stress design load
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combinations.
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SOLUTION

TableP2.3 SummaryofLoadCombinationsUsingBasicAllowableStressDesignfor Beam
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in Problem 2.3 l l l




Load Combination l



IBCEquation
Equation Bending Moment Shear Force
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No.
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Support Midspan Support
16-8,16-10 l D –57.6 41.1 11.8
16-9 D+L
l l –80.1 57.3 16.4
16-11, 16-14 l D + 0.75L
l l –74.5 53.3 15.3
D + 0.6W
l l –25.2 41.1 8.9
16-12
D – 0.6W
l l –90.0 41.1 14.7
D + 0.75(0.6W) + 0.75L
l l l l –50.2 53.3 13.1
16-13
D – 0.75(0.6W) +0.75L
l l l l –98.8 53.3 17.4
0.6D + 0.6W l l –2.2 24.7 4.2
16-15
0.6D – 0.6W l l –67.0 24.7 10.0
16-16 0.6D –34.6 24.7 7.1




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