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Homework Help: Continuous slab

  1. Nov 9, 2012 #1
    1. The problem statement, all variables and given/known data[

    Here is the question that I am struggling with. I am told that my answers are not correct, but I do not know where I went wrong???? Any suggestions would help greatly! I attached a paper with all my work shown. Thanks!

    A solid one-way, continuous slab is used to span as a floor in a manufacturing facility. The structure is designed with columns creating 25’ by 50’ bays. Concrete girders span the 50’ direction and 18” wide concrete beams span the 25’ direction. The beams frame into the columns and into the girders at 1/4 points - center to center. The structure has a superimposed live load of 150 psf and a dead load of 52.5 psf in addition to the dead load of the slab. Given the following data: f y = 60 ksi f c' = 4,000 psi
    Use a/d revised = 0.400

    a. Determine the slab thickness -- use actual thickness -- No rounding.

    b. Determine the spacing of the #4 reinforcing steel at midspan location in the typical interior span. Moment coefficient = + 1/16

    b. What is the area of temperature steel required per foot of slab width?

    c. Draw a sketch showing the placement of the reinforcing you specified.

    Slab thickness “t” ( actual calculated – NO roundoff ) ____5.5______”

    Size and spacing of midspan--interior span reinforcing # 4 @ __13___ “ c/c

    Area of temperature steel __.1782_____ in2 / foot of width # 3 @ ___7___ ‘” c/c

    2. Relevant equations

    3. The attempt at a solution

    View attachment question2.pdf
  2. jcsd
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