A floor system in a small building consists of wood planks supported by 2 in. (nominal width) joists spaced at distance s, measured from center to center (see the figure). The span length L of each joist is 10 ft, the spacing s of the joists is 14 in., and the allowable bending stress in the wood is 1,150 psi The uniform floor load is 120 lb/ ft, which includes an allowance for the weight of the floor system itself. Planks Joists (a) Calculate the required section modulus S for the joists. S- in. (b) Select a suitable joist size (surfaced lumber) from Appendix G, assuming that each joist may be represented as a simple beam carrying a uniform load. A 2x4 in. B. 2x6 in? C.2x8 in.? D. 2x10 in. E 2x12 in. Select a suitable joist size -Select- (C) What is the maximum floor load that can be applied to your final beam selection in part (a)? Ib ft
A floor system in a small building consists of wood planks supported by 2 in. (nominal width) joists spaced at distance s, measured from center to center (see the figure). The span length L of each joist is 10 ft, the spacing s of the joists is 14 in., and the allowable bending stress in the wood is 1,150 psi The uniform floor load is 120 lb/ ft, which includes an allowance for the weight of the floor system itself. Planks Joists (a) Calculate the required section modulus S for the joists. S- in. (b) Select a suitable joist size (surfaced lumber) from Appendix G, assuming that each joist may be represented as a simple beam carrying a uniform load. A 2x4 in. B. 2x6 in? C.2x8 in.? D. 2x10 in. E 2x12 in. Select a suitable joist size -Select- (C) What is the maximum floor load that can be applied to your final beam selection in part (a)? Ib ft
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![A floor system in a small building consists of wood planks supported by 2 in. (nominal width) joists spaced at distance 8, measured from center to center (see the figure). The span length L of each joist is 10 ft, the spacing s of the joists is 14 in., and the allowable bending stress in the wood is 1,150 psi. The uniform floor load
is 120 lb/ ft", which includes an allowance for the weight of the floor system itself.
Planks
Joists
(a) Calculate the required section modulus S for the joists
S =
in.
(b) Select a suitable joist size (surfaced lumber) from Appendix G, assuming that each joist may be represented as a simple beam carrying a uniform load.
A. 2x4 in.?
В. 2х6 in,2
C. 2x8 in.?
D. 2x10 in.?
E. 2x12 in.?
Select a suitable joist size
-Select-
(c) What is the maximum floor load that can be applied to your final beam selection in part (a)?
lb
Wmaz
ft2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2c752183-25c3-4298-8b36-fdca65f096ec%2F3dbde94b-09a3-480b-844c-7044dbe4e6c2%2Fjcv4ucx_processed.png&w=3840&q=75)
Transcribed Image Text:A floor system in a small building consists of wood planks supported by 2 in. (nominal width) joists spaced at distance 8, measured from center to center (see the figure). The span length L of each joist is 10 ft, the spacing s of the joists is 14 in., and the allowable bending stress in the wood is 1,150 psi. The uniform floor load
is 120 lb/ ft", which includes an allowance for the weight of the floor system itself.
Planks
Joists
(a) Calculate the required section modulus S for the joists
S =
in.
(b) Select a suitable joist size (surfaced lumber) from Appendix G, assuming that each joist may be represented as a simple beam carrying a uniform load.
A. 2x4 in.?
В. 2х6 in,2
C. 2x8 in.?
D. 2x10 in.?
E. 2x12 in.?
Select a suitable joist size
-Select-
(c) What is the maximum floor load that can be applied to your final beam selection in part (a)?
lb
Wmaz
ft2
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