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 9.4.2P
To determine
(a)
Whether the beam
To determine
(b)
Whether the beam
To determine
(c)
Number of studs required.
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A composite floor system uses formed steel deck of the type shown in Figure . The beams are W18 x 50, and the slab has a total thickness of 41⁄2 inches from top of slab to bottom of deck. The effective slab width is 90 inches, and the span length is 30 feet. The structural steel is A992, and the concrete strength is f,c= 4 ksi. Compute the nominal flexural strength with two 3⁄4-inch 3 31⁄2-inch studs per rib.
Provide THREE (3) considerations to improve flexural resistance in a concrete beam.
As a design engineer you are asked to peer review the design done by another engineer at your organization. A typical reinforced concrete floor slab plan is given. Assume all members to be simply supported. The
specified compressive strength of concrete is 5000 psi and Grade-60 steel is used. Unit weight of concrete can be assumed as 150 lb/ft³.
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B1
B3
B3
B1
2
The only dead load acting on the slab is the self-weight of the members. The live load on the slab is 100 psf.
Initial cross-section and reinforcement details of beam B1 is shown. Area of steel is 4.8in².
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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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- = 1. The beam shown is interior exposure and is reinforced with 4-#8 Grade 60 bars. 11" cover over #3 stirrup, also fy = 60 ksi in the region of the beam where the #8 bars are developed, these stirrups are at 6" centers. f = 4.5 ksi, lightweight concrete, no fct splitting tensile strength is given. #8 bars are epoxy coated. (1) Find the value for Ktr using ACI 318-22 Equation (25.4.2.4b) (2) Find la using ACI 318-22 Equation (25.4.2.4a) 4-#8 GR 60 16 in. #3 stirrup at 6" on center 24 inarrow_forwardCompute the design strength of a doubly reinforced rectangular beam given the following data: Beam width: 380 mm Effective depth, d: 500 mm As: 4-28 mm dia. bars As’: 3-20 mm dia. bars Steel yield strength: 415 MPa Concrete strength: 20.7 MPa Clear cover of top bars: 60 mmarrow_forwardA simply supported beam 300 mm wide, 500 mm deep and spans 5.3 m supports a service super imposed dead load of 8 kN/m and service live load of 6 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015.arrow_forward
- 6. ESTIMATION OF QUANTITIES OF STEEL & R.C.C. ELEMENTS EPU Example 1: Estimate the Slab reinforcement for the given figure below. All the straight bottom bars are 10mm@400mm c/c. All offset bars 12mm@400mm c/c, All Additional Top bars 12mm@400mm c/c. The slab thickness is 150mm. Assume cover is 25mm & wall thickness20cm 0.45 0.45 3.70 4.70 0.45 0.45 3.70 5.20 3.10 1.60 150arrow_forwardA fully composite section that is comprised of an A992 W16x31 with a 5-inch, (f'c= 4 ksi) slab on top of it. The beam span is 30' and the spacing of the beams is 5-foot. All the shear studs to make the composite beam were completely forgotten to be installed by the contractor. Assume that the friction between the slab and the steel beam is enough to provide continuous lateral support to the compression flange of the steel beam but provides no composite action between the concrete and the steel. What is the LRFD moment capacity (4bMn) of this badly built attempt at a 'composite' beam, Hint; The flexural strength of the unreinforced concrete slab is 7.5*(f'c)^0.5 Also, the fundamental flexural equation is MC/I. Show all work.arrow_forward3. A floor structure with a live load of 7 kPa has been designed to be a Canam P3615 composite slab 0.76 thick deck with a slab thickness of 115mm. The span of the deck slab is 2325mm. The floor finish is 50 mm terrazzo. The floor also supports a tiled ceiling & suspension system as well as an allowance for ducts/pipes/ and wiring and sprayed on fire protection. Check if the composite slab meets Ultimate Limit State and Serviceability Limit State. The deflection limitation is L/300. 16arrow_forward
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