= For Problems 8.11 to 8.19, for the beams and loads given, select stirrup spacings if f = 4000 psi f = 4000 psi normal-weight concrete and fyt = 60,000 psiƒy = 60,000 psi. The dead loads shown include beam weights. Do not consider movement of live loads unless specifically requested. Assume #3 □ stirrups unless given otherwise. Problem 8.11 (One ans. 1 @ 6 in., 10 @ 12 in.) トー WD = 1 k/ft w₁ = 2 k/ft 28 ft 4 #11 24 in. 27 in. 16 in. 3 in.

= For Problems 8.11 to 8.19, for the beams and loads given, select stirrup spacings if f = 4000 psi f = 4000 psi normal-weight concrete and fyt = 60,000 psiƒy = 60,000 psi. The dead loads shown include beam weights. Do not consider movement of live loads unless specifically requested. Assume #3 □ stirrups unless given otherwise. Problem 8.11 (One ans. 1 @ 6 in., 10 @ 12 in.) トー WD = 1 k/ft w₁ = 2 k/ft 28 ft 4 #11 24 in. 27 in. 16 in. 3 in.

Steel Design (Activate Learning with these NEW titles from Engineering!)

6th Edition

ISBN:9781337094740

Author:Segui, William T.

Publisher:Segui, William T.

Chapter9: Composite Construction

Section: Chapter Questions

Problem 9.2.1P: A W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The...

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A W1422 acts compositely with a 4-inch-thick floor slab whose effective width b is 90 inches. The beams are spaced at 7 feet 6 inches, and the span length is 30 feet. The superimposed loads are as follows: construction load = 20 psf, partition load = 10 psf, weight of ceiling and light fixtures = 5 psf, and live load = 60 psf, A992 steel is used, and fc=4 ksi. Determine whether the flexural strength is adequate. a. Use LRFD. b. Use ASD.
If the soil-bearing pressure is 1500 psf and the concrete has a strength of 2500 psi, what size pier is needed to support a load of 4600 lb?
What is the main value in pre-stressing pre-cast concrete columns?
Why is nothing added to the concrete quantities for wastage at the time of the takeoff?
Repeat Problem 11.1 based on LRFD using the following factors: load factor for dead load = 1.25 load factor for live load = 1.75 strength reduction factor on the ultimate bearing capacity = 0.50 11.1 A continuous foundation is required in a soil where , , and . The depth of the footing will be 1.0 m. The dead load and the live load are 600 kN/m and 400 kN/m, respectively. Determine the required width for the foundation based on allowable stress design with FS = 3, using Eq. (6.10) and Table 6.1.
How is concrete consolidated?
List three common categories of stress that must be known before a beam size can be determined.
What size does an opening in concrete have to be before a deduction is made from the volume of concrete to account for the opening?
Refer to Figure 5.2. Given: B = L = 1.75 m, Df = 1 m, H = 1.75 m, = 17 kN/m3, c = 0, and = 30. Using Eq. (5.6) and FS = 4, determine the gross allowable load the foundation can carry.
Portland cement concrete consists of what four primary elements?
For the mat in Problem 16.15, what will be the depth, Df, of the mat for FS = 3 against bearing capacity failure? 16.15 Consider a mat foundation with dimensions of 18 m 12 m. The combined dead and live load on the mat is 44.5 MN. The mat is to be placed on a clay with cu = 40.7 kN/m2 and = 17.6 kN/m3. Find the depth, Df, of the mat for a fully compensated foundation.
Note For Problems 9.6-1 through 9.6-5, use the lower-bound moment of inertia for deflection of the composite section. Compute this as illustrated in Example 9.7. 9.6-1 Compute the following deflections for the beam in Problem 9.2-1. a. Maximum deflection before the concrete has cured. b. Maximum total deflection after composite behavior has been attained.