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Select simply supported hem-fir (S4S) joists to support a floor live load of 40 psf on a 12-ft simple span. The superimposed dead load will be 15 psf (not including the joist weight). The joists are to be spaced 24 in. on center. Deflection is not to exceed span/360. TABLE E.1 U.S. Customary units Nominal Sire in. A in. Wt. I S, in 4in 5.36 Dressed Sie in. 2x4 x 3) 5.25 146 3.06 8.25 2.29 208 7.56 109 3.02 47.6 13.1 x 10 139 98.9 21.4 x 12 169 4. 178 31.6 * 13 x 15 K17 2) x3) x 14 199 5.52 291 439 x 16 229 6.35 443 58.2 x 18 25.9 7.17 642 74.5 3x4 8.75 242 893 5.10 138 34.7 12.6

Select simply supported hem-fir (S4S) joists to support a floor live load of 40 psf on a 12-ft simple span. The superimposed dead load will be 15 psf (not including the joist weight). The joists are to be spaced 24 in. on center. Deflection is not to exceed span/360. TABLE E.1 U.S. Customary units Nominal Sire in. A in. Wt. I S, in 4in 5.36 Dressed Sie in. 2x4 x 3) 5.25 146 3.06 8.25 2.29 208 7.56 109 3.02 47.6 13.1 x 10 139 98.9 21.4 x 12 169 4. 178 31.6 * 13 x 15 K17 2) x3) x 14 199 5.52 291 439 x 16 229 6.35 443 58.2 x 18 25.9 7.17 642 74.5 3x4 8.75 242 893 5.10 138 34.7 12.6

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Select simply supported hem-fir (S4S) joists to support a floor live load of 40 psf on a 12-ft simple span. The superimposed dead load will be 15 psf (not including the joist weight). The joists are to be spaced 24 in. on center. Deflection is not to exceed span/360. TABLE E 1 U.S. Customary units Nominal Size in. Dressed Size in. A in.2 Wt. Ib/ft 1, in. S, in. 2 x 4 1} x 3) 5.25 1.46 5.36 3.06 x 5 x 74 x 9 x 6 8.25 2.29 20.8 7.56 x 8 10.9 3.02 47.6 13.1 x 10 13.9 3.85 98.9 21.4 x 11 x 13 x 15 x 12 16.9 4.68 178 31.6 x 14 19.9 5.52 291 43.9 x 16 22.9 6.35 443 58.2 x 18 x 17 25.9 7.17 642 74.5 3 x 4 2) x 3} 8.75 2.42 8.93 5.10 x 6 x 5 3.82 13.8 34.7 12.6 x 7 x9 x 8 18.1 5.04 79.4 21.9 x 10 23.1 6.42 165 35.6 x 11 x 13 х 12 28.1 7.81 297 52.7 x 14 33.1 9.20 485 73.2 x 15 x 17 x 16 38.1 10.6 739 96.9 x 18 43.1 12.0 1070 124 3} x 3} x 5 4 x 4 12.3 3.40 12.5 7.15 x 6 19.3 5.35 48.5 17.6 x 8 25.4 7.05 111 30.7 х 10 x9 32.4 8.93 231 49.9 x 11 x 13 x 15 x 17 х 12 39.4 10.9 415 73.8 х 14 46.4 12.9 678 102 x 16 53.4 14.9 1030 136 x 18 60.4 16.8 1500 174 Allowable Stressª (psi) Modulus of Elasticity E (ksi) Species Fb Fy Douglas fir 1050 550 625 900 180 1700 Southern pine 1250 410 825 1400 175 1700 Hem-fir 1300 400 500 1000 150 1400 Eastern white pine 725 350 275 600 135 1100 Redwood 1050 650 600 1000 160 1300
Transcribed Image Text:Select simply supported hem-fir (S4S) joists to support a floor live load of 40 psf on a 12-ft simple span. The superimposed dead load will be 15 psf (not including the joist weight). The joists are to be spaced 24 in. on center. Deflection is not to exceed span/360. TABLE E 1 U.S. Customary units Nominal Size in. Dressed Size in. A in.2 Wt. Ib/ft 1, in. S, in. 2 x 4 1} x 3) 5.25 1.46 5.36 3.06 x 5 x 74 x 9 x 6 8.25 2.29 20.8 7.56 x 8 10.9 3.02 47.6 13.1 x 10 13.9 3.85 98.9 21.4 x 11 x 13 x 15 x 12 16.9 4.68 178 31.6 x 14 19.9 5.52 291 43.9 x 16 22.9 6.35 443 58.2 x 18 x 17 25.9 7.17 642 74.5 3 x 4 2) x 3} 8.75 2.42 8.93 5.10 x 6 x 5 3.82 13.8 34.7 12.6 x 7 x9 x 8 18.1 5.04 79.4 21.9 x 10 23.1 6.42 165 35.6 x 11 x 13 х 12 28.1 7.81 297 52.7 x 14 33.1 9.20 485 73.2 x 15 x 17 x 16 38.1 10.6 739 96.9 x 18 43.1 12.0 1070 124 3} x 3} x 5 4 x 4 12.3 3.40 12.5 7.15 x 6 19.3 5.35 48.5 17.6 x 8 25.4 7.05 111 30.7 х 10 x9 32.4 8.93 231 49.9 x 11 x 13 x 15 x 17 х 12 39.4 10.9 415 73.8 х 14 46.4 12.9 678 102 x 16 53.4 14.9 1030 136 x 18 60.4 16.8 1500 174 Allowable Stressª (psi) Modulus of Elasticity E (ksi) Species Fb Fy Douglas fir 1050 550 625 900 180 1700 Southern pine 1250 410 825 1400 175 1700 Hem-fir 1300 400 500 1000 150 1400 Eastern white pine 725 350 275 600 135 1100 Redwood 1050 650 600 1000 160 1300
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