Page 271 - Design of Reinforced Masonry Structures
P. 271
4.134 CHAPTER FOUR
9.63" (10" nominal)
d = 34"
40"
2#5
FIGURE P4.6
4.7 A nominal 10 × 40 in concrete masonry beam built from lightweight CMU is
reinforced with two No. 5 Grade 60 bars for tension. The centroid of reinforce-
ment is located at 6 in. from the bottom of the beam (Fig. P4.7). The beam carries
a service live load of 1000 lb/ft in addition to its own weight over an effective
3
span of 15 ft 8 in. The grout weight is 140 lb/ft . ′ f = 1500 psi. Check if the beam
m
is adequate to carry the imposed loads.
9.63" (10" nominal)
d = 34"
40"
2#5
FIGURE P4.7
