The beam is simply supported at the left end and fixed at the right end. Under a unform load w, it has the shear and moment diagrams shown above. It has normal weight concrete. The concrete strength is specified to be 4,000 psi and the steel is Grade 60. The amount of reinforcement satisfies the tension-controlled condition. In addition to its own weight, it carries a live of 3 kips/ft. The live load is imposed on the top of the web of the beam. Solve the following parts 1) Briefly explain the shear-lag phenomenon and how it affects the flexural behavior of a flanged beam. How is this considered in design according to ACI 318? ) What specification is used in ACI 318 to control crack width under flexure?

The beam is simply supported at the left end and fixed at the right end. Under a unform load w, it has the shear and moment diagrams shown above. It has normal weight concrete. The concrete strength is specified to be 4,000 psi and the steel is Grade 60. The amount of reinforcement satisfies the tension-controlled condition. In addition to its own weight, it carries a live of 3 kips/ft. The live load is imposed on the top of the web of the beam. Solve the following parts 1) Briefly explain the shear-lag phenomenon and how it affects the flexural behavior of a flanged beam. How is this considered in design according to ACI 318? ) What specification is used in ACI 318 to control crack width under flexure?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Composite Construction

Composite construction is the construction of structures in which two or more materials are used. Regarding structural engineering, composite construction is a construction where two materials are bound together in a technical manner such that both the materials act as a single unit to carry and transfer the load. The motives of composite construction are to increase the structural strength, make structures more aesthetic, and provide a sustainable environment.

Question

Consider the same beam as in Problem 1. It carries a live load of 3 kips/ft.
8" 8"
V (kips)
wl
M (kips)
9
w/²
128
6"
6 #6
7.5 ft.
7.5 ft.
A
WL =3 kips/ft.
1 =20 ft.
6 #9
500
8
5 ft.
B
wl
8
-W/2
B

2.5"
|
10"
6 #6
20"
Section A-A
5"
22"
2.5"
6 #9
6#6
Section B-B
H
I 4"
The beam is simply supported at the left end and fixed at the right end. Under a unform load
w, it has the shear and moment diagrams shown above. It has normal weight concrete. The
concrete strength is specified to be 4,000 psi and the steel is Grade 60. The amount of
reinforcement satisfies the tension-controlled condition.
In addition to its own weight, it carries a live of 3 kips/ft. The live load is imposed on the top
of the web of the beam. Solve the following parts
a) Briefly explain the shear-lag phenomenon and how it affects the flexural behavior
of a flanged beam. How is this considered in design according to ACI 318?
b) What specification is used in ACI 318 to control crack width under flexure?

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