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CE457 - Quiz Number Three
Name
Three-point questions:
Because of workability, the concrete quality near the top of the beam is better than
(1) T/F
that near the bottom.
(2) The time factor for sustained load for three years is
.
(3) T/F
Compression steel
Forty-point question: Design a high-strength round spiral column with properties:
fc = 5 ksi and fy = 70 ksi. Assume 5% steel percentage intially. Since highstrength steel is available, use #3 spiral and #10 longitudinal reinforcement bars.
The dead load
CE457 - Quiz Number Five
Name
Three-point questions:
A statically indetermined structural design is safer as all structural members are
(1) T/F
interconnected and related.
Elastic methods are often used by designers for continuously reinforced concrete
(2
Forty-point question: Given for the concrete beam as
shown in the gure: fy = 60 ksi, fc = 5 ksi, n = 8,
M = 140 ft-kip. (a) Find The location of the neutral
axis from the top of the beam. (b) Find the maximum
stress in concrete. (c) Find the maximum stres
S'frccscs
._T?ans Formd. SQcon; .
2' 6W 5*{6 _
I in {J} 56 are n- _ Wr 1135.94:
PM re-MM beam are service loads and fy
stlrrups and determine the requi
and the detailed method. Show
solutions.
PROBLEM
Select the stirrup spacing for the beam shown be