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TABLE 82 Allowable Spans in Feet and Inches for Ceiling Joists (Drywall Cellingr Modulus of Elasticity, E, in 1,000,000 psi S feng 0.8 09 1.0 1.2 13 LA 15 1.6 1.7 1.8 19 20 22 13-2 ररा 1270 13-9 नारा 1400 12-8 12-11 134 103 770 10-11 880 911 970 8-8 I110 17-2 11-7 980 10-6 1-10 12-2 1080 10-7 12-5 9-10 710 -11 780 7-10 900 15-6 ०रा 710 11-3 930 10-3 1030 -11 1170 17-8 930 1030 10-9 1180 11-6 1290 100 1480 19-11 180 18-1 1290 830 9-8 120 1130 12-2 12-6 1540 11-9 140 10-3 1540 20-3 11-11 1390 105 1600 20-8 94 11-0 11-3 JORO 92 1240 18-2 980 1140 9-5 1300 18-8 I00 16-11 1140 1440 10-7 1650 21-0 1190 1240 850 8-1 970 16-1 910 8-5 1040 16-8 830 15-2 910 13-3 1040 21-11 830 19-11 910 17-5 1040 28-0 830 25-5 910 24 16.0 9-8 1360 10-11 1760 21-8 1400 198 1540 17-2 1760 28-7 9-10 1420 19-6 24.0 19-1 OC21 18-5 18-9 OLE 1310 19-1 880 15-7 970 13-8 1130 17-8 770 147 850 12-9 970 21-2 770 16-1 16-6 174 14-1 780 12-3 900 20-5 710 18-6 780 16-2 900 26-0 I080 14-5 1240 24-0 980 21-9 1080 1190 1240 15-6 1420 25-8 130 234 1240 20-5 1420 32-9 130 29-9 1240 26-0 1420 1340 16-1 1540 26-9 1220 24-3 1340 21-2 1540 34-1 1220 31-0 1340 27-1 1440 16-8 1650 27-8 1310 25-2 1440 21-11 1650 35-4 1390 164 1600 27-2 1270 24-8 160 I00 15-2 1360 25-2 IO80 15-9 14R0 14-1 14-9 1300 24-7 100 22-4 1140 1170 23-4 24.0 22-8 26-2 1400 25-11 1540 22-8 1760 36-5 930 21-2 120 880 22-10 193 850 16-10 970 20-7 970 18-0 23-10 1290 20-10 1480 33-5 1390 21-7 1600 34-8 1190 19.11 150 32-1 1080 29-2 1190 25-5 2x8 160 18-6 1170 29.9 930 27-1 100 23-8 190 1240 30-7 980 27-9 1080 24-3 19-6 100 314 100 24.0 28-11 880 26-3 970 22-11 27-1 जरर 32-1 1310 1400 33-1 1540 28-11 120 710 23-8 770 24-7 850 21-6 970 30-5 1290 26-6 31-6 1390 27-6 28-6 1140 24-10 1300 1440 28-0 1650 2x10 16.0 780 20-8 22-3 24.0 900 1040 1170 1240 1480 1540 1600 1760 *Crierie 10 pef ive lead. 5 paf dead load, live lead deflection limited to Ne of the spun Number shown in each bes belw te span is the minimum muind allowsle beading ses in psi. Soure: Rependuced from the Uniform lng Code, 1991 ed Ref. 3 with permisains ef de puhtitern, termational Conference of Building Offciala Problem 8.7.A, B, C. Using the following data, select Douglas fir-larch No. 2 grade ceiling joists from Table 8.2: Joist Spacing Wood Grade Span A 16 in. No. 2 12 ft 16 in. No. 3 14 ft B 24 in. No. 2 18 ft 司到 126

TABLE 82 Allowable Spans in Feet and Inches for Ceiling Joists (Drywall Cellingr Modulus of Elasticity, E, in 1,000,000 psi S feng 0.8 09 1.0 1.2 13 LA 15 1.6 1.7 1.8 19 20 22 13-2 ररा 1270 13-9 नारा 1400 12-8 12-11 134 103 770 10-11 880 911 970 8-8 I110 17-2 11-7 980 10-6 1-10 12-2 1080 10-7 12-5 9-10 710 -11 780 7-10 900 15-6 ०रा 710 11-3 930 10-3 1030 -11 1170 17-8 930 1030 10-9 1180 11-6 1290 100 1480 19-11 180 18-1 1290 830 9-8 120 1130 12-2 12-6 1540 11-9 140 10-3 1540 20-3 11-11 1390 105 1600 20-8 94 11-0 11-3 JORO 92 1240 18-2 980 1140 9-5 1300 18-8 I00 16-11 1140 1440 10-7 1650 21-0 1190 1240 850 8-1 970 16-1 910 8-5 1040 16-8 830 15-2 910 13-3 1040 21-11 830 19-11 910 17-5 1040 28-0 830 25-5 910 24 16.0 9-8 1360 10-11 1760 21-8 1400 198 1540 17-2 1760 28-7 9-10 1420 19-6 24.0 19-1 OC21 18-5 18-9 OLE 1310 19-1 880 15-7 970 13-8 1130 17-8 770 147 850 12-9 970 21-2 770 16-1 16-6 174 14-1 780 12-3 900 20-5 710 18-6 780 16-2 900 26-0 I080 14-5 1240 24-0 980 21-9 1080 1190 1240 15-6 1420 25-8 130 234 1240 20-5 1420 32-9 130 29-9 1240 26-0 1420 1340 16-1 1540 26-9 1220 24-3 1340 21-2 1540 34-1 1220 31-0 1340 27-1 1440 16-8 1650 27-8 1310 25-2 1440 21-11 1650 35-4 1390 164 1600 27-2 1270 24-8 160 I00 15-2 1360 25-2 IO80 15-9 14R0 14-1 14-9 1300 24-7 100 22-4 1140 1170 23-4 24.0 22-8 26-2 1400 25-11 1540 22-8 1760 36-5 930 21-2 120 880 22-10 193 850 16-10 970 20-7 970 18-0 23-10 1290 20-10 1480 33-5 1390 21-7 1600 34-8 1190 19.11 150 32-1 1080 29-2 1190 25-5 2x8 160 18-6 1170 29.9 930 27-1 100 23-8 190 1240 30-7 980 27-9 1080 24-3 19-6 100 314 100 24.0 28-11 880 26-3 970 22-11 27-1 जरर 32-1 1310 1400 33-1 1540 28-11 120 710 23-8 770 24-7 850 21-6 970 30-5 1290 26-6 31-6 1390 27-6 28-6 1140 24-10 1300 1440 28-0 1650 2x10 16.0 780 20-8 22-3 24.0 900 1040 1170 1240 1480 1540 1600 1760 *Crierie 10 pef ive lead. 5 paf dead load, live lead deflection limited to Ne of the spun Number shown in each bes belw te span is the minimum muind allowsle beading ses in psi. Soure: Rependuced from the Uniform lng Code, 1991 ed Ref. 3 with permisains ef de puhtitern, termational Conference of Building Offciala Problem 8.7.A, B, C. Using the following data, select Douglas fir-larch No. 2 grade ceiling joists from Table 8.2: Joist Spacing Wood Grade Span A 16 in. No. 2 12 ft 16 in. No. 3 14 ft B 24 in. No. 2 18 ft 司到 126

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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* TABLE 8.2 Allowable Spans In Feet and Inches for Ceiling Joists (Drywall Celing) Modulus of Elasticity, E, in 1,000,000 psi Jei Sin Spaing 0.8 0.9 1.0 1.1 1.2 13 1.4 15 1.6 1.7 1.8 19 2.0 22 13-9 12-8 1180 11-7 11-10 12-11 13-2 13-4 12-2 1080 11-0 12-5 1130 11-3 103 10-7 830 9-8 910 8-5 10-11 880 9-11 970 11-3 930 10-3 9-10 1030 10-9 1220 11-9 1340 1270 11-11 1310 12-2 1400 12-6 12.0 980 710 8-11 780 7-10 770 9-4 I1-6 10-6 1080 9-2 1240 9-10 1390 10-5 1600 20-8 1440 10-7 1540 10-11 1760 21-8 1140 9-5 1190 1030 8-11 1170 17-8 930 1290 10-0 1480 19-11 16.0 850 8-1 970 2x4 9-8 10-3 8-8 I10 17-2 880 1540 20-3 1220 1040 16-8 830 15-2 1240 18-2 980 1300 18-8 I030 1420 19-6 1130 1650 21-0 1360 19-1 24.0 900 15-6 710 14-1 780 12-3 900 20-5 16-1 1400 19-8 1270 18-9 1390 164 1310 770 14-7 1180 18-1 12.0 15-7 16-1 16-6 16-11 17-4 17-8 18-5 19-1 1190 1240 15-2 1360 25-2 IO80 22-10 1190 19.11 160 32-1 1540 1290 15-9 14R0 26-2 T180 23-10 1340 1440 16-8 1650 27-5 970 1030 1080 1140 14-9 850 12-9 970 21-2 910 13-3 2x6 16.0 17-2 15-6 1420 13-8 16-1 14-1 1170 23-4 930 21-2 1030 18-6 14-5 1600 27-2 1270 24-8 1390 1760 28-7 1400 25-11 1040 21-11 830 19-11 10 22-8 880 1240 24-0 980 1300 24-7 1540 26-9 24.0 25-8 1220 24-3 1310 25-2 1440 21-11 1650 35-4 1310 32-1 1440 28-0 1650 1030 22-4 710 18-6 780 16-2 900 26-0 1130 23-4 1240 20-5 1420 32-9 T130 29.9 1240 26-0 1420 12.0 770 19.3 20-7 21-9 1340 21-2 1540 22-8 1080 19-0 1240 30-7 980 27.9 970 1290 850 16-10 970 27-1 770 24-7 850 1140 19-6 1300 31-4 910 17-5 2x8 16.0 18-0 20-10 21-7 1480 33-5 1180 30-5 1290 26-6 1480 1540 34-1 1220 31-0 1340 27-1 1540 1760 36-5 1400 33-1 1540 28-11 1760 1040 28-0 1170 29.9 930 27-1 24.0 1600 28-11 880 34-8 830 25-5 1030 28-6 1270 31-6 12.0 710 23-8 780 20-8 900 29.2 1190 25-5 26-3 1140 24-10 1300 1390 27-6 1600 16.0 1080 970 22-11 10 100 23-8 1170 2x10 910 22-3 1040 24-3 21-6 970 24.0 1240 1360 Criseria: 10 paf live load. 5 psf dead load, live load deflection limited to Ne of the span Number shown in each box below the span is the mninimum mquind allowshle bending stress in psl. Sourer: Reprnduced from the Unifirm Muilding Codr, 1991 edtion, (Ref. ), with permision of the puhlishers, International Conference of Building Officiala Problem 8.7.A, B, C. Using the following data, select Douglas fir-larch No. 2 grade ceiling joists from Table 8.2: Joist Spacing Wood Grade Span A 16 in. No. 2 12 ft No. 3 14 ft 16 in. 24 in. No. 2 18 ft
Transcribed Image Text:* TABLE 8.2 Allowable Spans In Feet and Inches for Ceiling Joists (Drywall Celing) Modulus of Elasticity, E, in 1,000,000 psi Jei Sin Spaing 0.8 0.9 1.0 1.1 1.2 13 1.4 15 1.6 1.7 1.8 19 2.0 22 13-9 12-8 1180 11-7 11-10 12-11 13-2 13-4 12-2 1080 11-0 12-5 1130 11-3 103 10-7 830 9-8 910 8-5 10-11 880 9-11 970 11-3 930 10-3 9-10 1030 10-9 1220 11-9 1340 1270 11-11 1310 12-2 1400 12-6 12.0 980 710 8-11 780 7-10 770 9-4 I1-6 10-6 1080 9-2 1240 9-10 1390 10-5 1600 20-8 1440 10-7 1540 10-11 1760 21-8 1140 9-5 1190 1030 8-11 1170 17-8 930 1290 10-0 1480 19-11 16.0 850 8-1 970 2x4 9-8 10-3 8-8 I10 17-2 880 1540 20-3 1220 1040 16-8 830 15-2 1240 18-2 980 1300 18-8 I030 1420 19-6 1130 1650 21-0 1360 19-1 24.0 900 15-6 710 14-1 780 12-3 900 20-5 16-1 1400 19-8 1270 18-9 1390 164 1310 770 14-7 1180 18-1 12.0 15-7 16-1 16-6 16-11 17-4 17-8 18-5 19-1 1190 1240 15-2 1360 25-2 IO80 22-10 1190 19.11 160 32-1 1540 1290 15-9 14R0 26-2 T180 23-10 1340 1440 16-8 1650 27-5 970 1030 1080 1140 14-9 850 12-9 970 21-2 910 13-3 2x6 16.0 17-2 15-6 1420 13-8 16-1 14-1 1170 23-4 930 21-2 1030 18-6 14-5 1600 27-2 1270 24-8 1390 1760 28-7 1400 25-11 1040 21-11 830 19-11 10 22-8 880 1240 24-0 980 1300 24-7 1540 26-9 24.0 25-8 1220 24-3 1310 25-2 1440 21-11 1650 35-4 1310 32-1 1440 28-0 1650 1030 22-4 710 18-6 780 16-2 900 26-0 1130 23-4 1240 20-5 1420 32-9 T130 29.9 1240 26-0 1420 12.0 770 19.3 20-7 21-9 1340 21-2 1540 22-8 1080 19-0 1240 30-7 980 27.9 970 1290 850 16-10 970 27-1 770 24-7 850 1140 19-6 1300 31-4 910 17-5 2x8 16.0 18-0 20-10 21-7 1480 33-5 1180 30-5 1290 26-6 1480 1540 34-1 1220 31-0 1340 27-1 1540 1760 36-5 1400 33-1 1540 28-11 1760 1040 28-0 1170 29.9 930 27-1 24.0 1600 28-11 880 34-8 830 25-5 1030 28-6 1270 31-6 12.0 710 23-8 780 20-8 900 29.2 1190 25-5 26-3 1140 24-10 1300 1390 27-6 1600 16.0 1080 970 22-11 10 100 23-8 1170 2x10 910 22-3 1040 24-3 21-6 970 24.0 1240 1360 Criseria: 10 paf live load. 5 psf dead load, live load deflection limited to Ne of the span Number shown in each box below the span is the mninimum mquind allowshle bending stress in psl. Sourer: Reprnduced from the Unifirm Muilding Codr, 1991 edtion, (Ref. ), with permision of the puhlishers, International Conference of Building Officiala Problem 8.7.A, B, C. Using the following data, select Douglas fir-larch No. 2 grade ceiling joists from Table 8.2: Joist Spacing Wood Grade Span A 16 in. No. 2 12 ft No. 3 14 ft 16 in. 24 in. No. 2 18 ft
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