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Maximum Allowable - Previous Exam - Exam, Exams of Electrical Engineering

Main points of this exam paper are: Maximum Allowable, Tensile Load, Bolts, Fracture, Block-Shear Failure, Applicable, Angles

Typology: Exams

2012/2013

Uploaded on 04/01/2013

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University of California at Berkeley CEE 122
Department of Civil and Environmental Engineering Fall 2001
Practice Midterm 1:
Tension and Compression Members
10/11/01, 502 Davis Hall, 2 hours
Name
Problem Points Maximum
1 25
2 25
3 25
4 25
total 100
Honor Pledge:
I have neither give nor received aid during this examination, nor have I concealed any
violation of the Honor Code.
pf3

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University of California at Berkeley CEE 122 Department of Civil and Environmental Engineering Fall 2001

Practice Midterm 1:

Tension and Compression Members

10/11/01, 502 Davis Hall, 2 hours

Name

Problem Points Maximum

total 100

Honor Pledge:

I have neither give nor received aid during this examination, nor have I concealed any violation of the Honor Code.

Problem 1: (25%)

Determine the maximum allowable tensile load Tu (25% dead load and 75% live load) for a single C15x33.9 fastened to a 1/2-inch gusset plate as shown below. Use A572 gr. 50 steel for both the channel and the gusset plate. Assume the bolts have a 3/4-inch diameter. Check all applicable yielding, fracture and block-shear failure modes.

3@3"=9"

1-1/2" 3" 3" 1-1/2"

C15x33.9 A

t=1/2" A

db = 3/4"

Problem 2: (25%)

Select a pair of A572 Gr. 50 angles to support a tensile dead load of 48 kips and live load of 32 kips and has a length of 24 feet. Assume the angles are back-to-back and separated by a 3/8-inch gusset plate. Assume the angles are welded to the gusset plate by both longitudinal and transverse welds. Make sure the slenderness ratio does not exceed 300.