Materials for Civil and Construction Engineers (4th Edition)
4th Edition
ISBN: 9780134320533
Author: Michael S. Mamlouk, John P. Zaniewski
Publisher: PEARSON
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Question
Chapter 8, Problem 8.6QP
a)
To determine
The shape of the concrete masonry.
b)
To determine
The gross area compressive strength.
c)
To determine
The net area compressive strength.
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A concrete masonry unit has actual gross dimensions of 7@5/8′′ * 7@5/8′′ *7@5/8′′. The unit is tested in a compression machine with the following results:Maximum failure load = 81,000 lbNet volume = 294.2 in3a. Is the unit categorized as solid or hollow? Why?b. Calculate the gross area compressive strength.c. Calculate the net area compressive strength.
A concrete masonry unit has actual gross dimensions of 190 mm * 190 mm *190 mm. The unit is tested in a compression machine with the followingresults:Maximum failure load = 370 kNNet volume = 5125 cm3a. Is the unit categorized as solid or hollow? Why?b. Calculate the gross area compressive strength.c. Calculate the net area compressive strength.
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Chapter 8 Solutions
Materials for Civil and Construction Engineers (4th Edition)
Ch. 8 - Prob. 8.1QPCh. 8 - Prob. 8.2QPCh. 8 - Prob. 8.3QPCh. 8 - Prob. 8.4QPCh. 8 - Prob. 8.5QPCh. 8 - Prob. 8.6QPCh. 8 - Prob. 8.7QPCh. 8 - Prob. 8.8QPCh. 8 - Prob. 8.9QPCh. 8 - Prob. 8.10QP
Ch. 8 - Prob. 8.11QPCh. 8 - A portion of a medium-weight concrete masonry unit...Ch. 8 - A portion of a concrete masonry unit was tested...Ch. 8 - A concrete masonry unit was tested according to...Ch. 8 - Prob. 8.15QPCh. 8 - Prob. 8.16QPCh. 8 - A severe weathering clay brick was tested for...Ch. 8 - Prob. 8.18QPCh. 8 - What is the grout? What is the grout used for?Ch. 8 - Prob. 8.20QP
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- Problem 2: If f = 3 ksi what is the modulus of elasticity Ec and the maximum tensile stress fr that the concrete can carry before cracking (use ACI recommended equations). Assume a unit weight of the plain concrete is: a. Wc = 90- b. w lb lb 118- ft39 ft3) C. W = 160- Problem 3: Wight 3-6 Rugblom 4: Wight ? 7 lb ft3arrow_forwardA hollow concrete masonry unit has an actual dimension of 150mm x 200mm x 400mm(W x H x L). The unit was tested in a compression machine with the following result.Failure load = 1,200 kNNet volume = 4,400,000 mm2Determine: a) the gross area compressive strength.b) the net area compressive strength.arrow_forwardA concrete masonry unit has actual gross dimensions of 190 mm * 190 mm *190 mm. The unit is tested in a compression machine with the followingresults:Failure load = 436 kNNet volume of 224516 mm3a. Is the unit categorized as solid or hollow?b. Calculate the gross area compressive strength.c. Calculate the net area compressive strength.arrow_forward
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