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A simply supported wood beam having a span length L=12ft is subjected to unsymmetrical point loads. Select a suitable size for the beam from the table in Appendix G

A simply supported wood beam having a span length L=12ft is subjected to unsymmetrical point loads. Select a suitable size for the beam from the table in Appendix G

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A simply supported wood beam having a span length L=12ft is subjected to unsymmetrical point loads. Select a suitable size for the beam from the table in Appendix G
size for the beam from the table in Appendix G. The allowable bending stress is 1800 psi and the wood weighs 35 lb/ft³. P = 2.5 kips P, = 3.2 kips 4 ft. 4 ft 4 ft PROBLEM 5.6-1
Transcribed Image Text:size for the beam from the table in Appendix G. The allowable bending stress is 1800 psi and the wood weighs 35 lb/ft³. P = 2.5 kips P, = 3.2 kips 4 ft. 4 ft 4 ft PROBLEM 5.6-1
APPENDIX G Properties of Structural Lumber 1 1- h Properties of Surfaced Lumber (Abridged List) Axis 1-1 Weight per Linear Foot Axis 2-2 Section Nominal Dimensions Dimensions bx h Section Modulus hb? S, 6. Net Moment Moment of Inertia hb Area of Inertia bh Modulus bh? S, = 6. (weight density 35 lb/ ft') A = bh b,x h 12 12 in. in. in in in in in Ib 2 x 4 1.5 x 3.5 5.25 5.36 3.06 0.98 1.31 1.3 2 x 6 1.5 X 5.5 8.25 20.80 7.56 1.55 2.06 2.0 2 x 8 1.5 x 7.25 10.88 47.63 13.14 2.04 2.72 2.6 2 x 10 1.5 x 9.25 13.88 98.93 21.39 2.60 3.47 3.4 2 x 12 1.5 x 11.25 16.88 177.98 31.64 3.16 4.22 4.1 3 x 4 3x 6 2.5 x 3.5 8.75 8.93 5.10 4.56 3.65 2.1 2.5 x 5.5 13.75 34.66 12.60 7.16 5.73 3.3 3 X 8 2.5 x 7.25 18.13 79.39 21.90 9.44 7.55 4.4 3 x 10 3 x 12 2.5 x 9.25 23.13 164.89 35.65 12.04 9.64 5.6 2.5 x 11.25 28.13 296.63 52.73 14,65 11.72 6.8 4 x 4 3.5 x 3.5 12.25 12.51 7.15 12.51 7.15 3.0 4 X 6 3.5 x 5.5 19.25 48.53 17.65 19.65 11.23 4.7 4 x 8 3.5 x 7.25 25.38 111.15 30.66 25.90 14.80 6.2 4 x 10 3.5 x 9.25 32.38 230.84 49.91 33.05 18.89 7.9 4 x 12 3.5 x 11.25 39.38 415.28 73.83 40.20 22.9 9.6 6 X 6 5.5 x 5.5 30.25 76.3 27.7 76.3 27.7 7.4 6 x 8 5.5 x 7.5 41.25 193.4 51.6 104.0 37.8 10.0 6 x 10 5.5 x 9.5 52.25 393.0 82.7 131.7 47.9 12,7 6 x 12 5.5 x 11.5 63.25 697.1 121.2 159.4 58.0 15.4 8 x 8 8 x 10 8 x 12 7.5 x 7.5 56.25 263.7 70.3 263.7 70.3 13.7 7,5 x 9.5 71.25 535.9 112.8 334.0 89.1 17.3 7.5 x 11.5 86.25 950.5 165.3 404.3 107.8 21.0 Note: Axes 1-1 and 2-2 are principal centroidal axes. 1101
Transcribed Image Text:APPENDIX G Properties of Structural Lumber 1 1- h Properties of Surfaced Lumber (Abridged List) Axis 1-1 Weight per Linear Foot Axis 2-2 Section Nominal Dimensions Dimensions bx h Section Modulus hb? S, 6. Net Moment Moment of Inertia hb Area of Inertia bh Modulus bh? S, = 6. (weight density 35 lb/ ft') A = bh b,x h 12 12 in. in. in in in in in Ib 2 x 4 1.5 x 3.5 5.25 5.36 3.06 0.98 1.31 1.3 2 x 6 1.5 X 5.5 8.25 20.80 7.56 1.55 2.06 2.0 2 x 8 1.5 x 7.25 10.88 47.63 13.14 2.04 2.72 2.6 2 x 10 1.5 x 9.25 13.88 98.93 21.39 2.60 3.47 3.4 2 x 12 1.5 x 11.25 16.88 177.98 31.64 3.16 4.22 4.1 3 x 4 3x 6 2.5 x 3.5 8.75 8.93 5.10 4.56 3.65 2.1 2.5 x 5.5 13.75 34.66 12.60 7.16 5.73 3.3 3 X 8 2.5 x 7.25 18.13 79.39 21.90 9.44 7.55 4.4 3 x 10 3 x 12 2.5 x 9.25 23.13 164.89 35.65 12.04 9.64 5.6 2.5 x 11.25 28.13 296.63 52.73 14,65 11.72 6.8 4 x 4 3.5 x 3.5 12.25 12.51 7.15 12.51 7.15 3.0 4 X 6 3.5 x 5.5 19.25 48.53 17.65 19.65 11.23 4.7 4 x 8 3.5 x 7.25 25.38 111.15 30.66 25.90 14.80 6.2 4 x 10 3.5 x 9.25 32.38 230.84 49.91 33.05 18.89 7.9 4 x 12 3.5 x 11.25 39.38 415.28 73.83 40.20 22.9 9.6 6 X 6 5.5 x 5.5 30.25 76.3 27.7 76.3 27.7 7.4 6 x 8 5.5 x 7.5 41.25 193.4 51.6 104.0 37.8 10.0 6 x 10 5.5 x 9.5 52.25 393.0 82.7 131.7 47.9 12,7 6 x 12 5.5 x 11.5 63.25 697.1 121.2 159.4 58.0 15.4 8 x 8 8 x 10 8 x 12 7.5 x 7.5 56.25 263.7 70.3 263.7 70.3 13.7 7,5 x 9.5 71.25 535.9 112.8 334.0 89.1 17.3 7.5 x 11.5 86.25 950.5 165.3 404.3 107.8 21.0 Note: Axes 1-1 and 2-2 are principal centroidal axes. 1101
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