Steel Design (Activate Learning with these NEW titles from Engineering!)
6th Edition
ISBN: 9781337094740
Author: Segui, William T.
Publisher: Cengage Learning
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Chapter 9, Problem 9.4.4P
To determine
Number of studs of dimension
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A beam, which is rectangular, has a base
of 250 mm, and d = 575 mm. The beam is
singly reinforced, where the recorded
strain in the steel is 0.005, and the strain
in the concrete is 0.003. fc' = 20.7 MPa, fy
= 414.6 MPa. Note: As is not Given
a) Determine the value of "a".
234.375 mm
None of the Choices
O 215.625 mm
O 206.250 mm
O 243.750 mm
O 225.000 mm
A beam, which is rectangular, has a base of 250 mm, and d = 575 mm. The beam is singly reinforced, where the recorded strain in the steel is 0.005, and the strain in the concrete is 0.003. fc' = 20.7 MPa, fy = 414.6 MPa. Note: As is not Given
b) Determine the value of "As"
a. If the beam shown is uncracked, calculate the stress in
concrete at the top and bottom extreme fibers under a
positive bending moment of 80k.ft.
3 in.
●
X= 4.75
w=8.5
u=6.75
v=8.5
S=11.75
in.
3 #10
Win.
18 in.
Figure 1
in.
Show Transcribed Text
+++
E
27 in.
Chapter 9 Solutions
Steel Design (Activate Learning with these NEW titles from Engineering!)
Ch. 9 - Prob. 9.1.1PCh. 9 - Prob. 9.1.2PCh. 9 - Prob. 9.1.3PCh. 9 - Prob. 9.1.4PCh. 9 - Prob. 9.1.5PCh. 9 - Prob. 9.1.6PCh. 9 - A W1422 acts compositely with a 4-inch-thick floor...Ch. 9 - Prob. 9.2.2PCh. 9 - Prob. 9.3.1PCh. 9 - Prob. 9.3.2P
Ch. 9 - Prob. 9.4.1PCh. 9 - Prob. 9.4.2PCh. 9 - Prob. 9.4.3PCh. 9 - Prob. 9.4.4PCh. 9 - Prob. 9.4.5PCh. 9 - Prob. 9.5.1PCh. 9 - Prob. 9.5.2PCh. 9 - Prob. 9.5.3PCh. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Note For Problems 9.6-1 through 9.6-5, use the...Ch. 9 - Prob. 9.7.1PCh. 9 - Prob. 9.7.2PCh. 9 - Prob. 9.7.3PCh. 9 - Prob. 9.7.4PCh. 9 - Prob. 9.8.1PCh. 9 - Prob. 9.8.2PCh. 9 - A beam must be designed to the following...Ch. 9 - Prob. 9.8.4PCh. 9 - Prob. 9.8.5PCh. 9 - Prob. 9.8.6PCh. 9 - Prob. 9.8.7PCh. 9 - Prob. 9.8.8PCh. 9 - Use the composite beam tables and select a W-shape...Ch. 9 - Prob. 9.8.10PCh. 9 - Prob. 9.10.1PCh. 9 - Prob. 9.10.2P
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- Q3\ The composite bar is firmly attached to unyielding supports. Compute the stress in each material caused by the application of the axial load P = 40 kips. %3D Steel Aluminum A = 1.25 in.2 E = 10 x 106 psi A = 2.0 in.2 E = 29 x 10° psi P to 12 in. 15 in-arrow_forward1. A two span beam subjected to shear and flexure only is reinforced as follows: Given: Stirrup diameter, ds = 10 mm Concrete f'c = 21 MPa Steel rebar fy = 415 MPa Stirrup fy = 275 MPa Beam size b x h = 270 mm x 450 mm Assume all bars laid out in single layer. Calculate the following: a. Tensile steel ratio in positive bending at midspan = _____?______ (in 5 decimal places) b. Design Moment strength of section at midspan for positive bending = ____?_____ kN·m (nearest whole number) c. Nominal Moment strength of section at face of support for negative bending = _____?____ kN·m (nearest whole number)arrow_forwardA simply supported beam is reinforced with 5-25mm at the bottom And 2-20mm at the top if the beam. Concrete covering to centroid of reinforcement is 70mm at the top and 64 mm at the bottom. The beam has a gross depth of 450 mm and gross width of 300 mm. Fc’=28 mpa fy= 415 mpa. Assume bars are laid out in a single layer. calculate the following if the limiting tensile steel strain is 0.004 for ductile failure: a) depth if neutral axis from the extreme concrete compression fiber ( in mm, in whole number) b) design strength of the beam section ( in kn•m , in whole number) c) maximum service uniform live load over the entire span in Addition to a DL = 20 kn/m ( including weight of the beam) if it has a span of 6 m ( in kn, in whole number)arrow_forward
- Determine the location of the centroid of the symmetrical composite section, as shown in the following figure. 150 mm 15 mm 150 mm 50 mm @ 15 mm C 3arrow_forward1. A single span beam having an unsupported span of 20m carries a uniform load of "W" kN/m throughout its span. The beam has a cross section of 150 mm x 600 mm. Allowable bending stress of the wood is F, = 12.4 MPa with a modulus elasticity of 13800 MPa. a. Compute the allowable bending stress with the size factor adjustment. b. Compute the allowable bending stress with slenderness factor adjustment. c. Compute the "W" that the beam could carry.arrow_forwardFor the wooden beam sketched in the figure, ask for the mid-span section. a) Determine the normal stresses at points 1, 2, 3 and 4. (Represent the distribution of normal stresses in the section) b) Check the structural safety in relation to normal stresses. (Adopting γt = 3.2 and γc = 2.5) ADDITIONAL DATA / INFORMATION Characteristic strengths of wood: TENSION: σr,t = 52 MPa COMPRESSION: σr,c = 40 MPaarrow_forward
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