(i) A site is using a concrete where the unit content of water, cement, sand and coarse aggregate are 180 kg/m³, 360 kg/m³, 700 kg/m³ and 1210 kg/m³, respectively. For a portion of the work, the engineer permits volume batching and rectangular boxes measuring 40 cm by 50 cm have to be fabricated to measure coarse aggregate. Assume the following: (a) The mixer available will mix concrete with one bag of cement (of 50 kg) at one time. (b) Three boxes of coarse aggregate will be used in a batch. (c) When filled in a normal manner, the void content in the box is 40%. (d) Specific gravity of the coarse aggregate is 2.75. Find the height of the box.
(i) A site is using a concrete where the unit content of water, cement, sand and coarse aggregate are 180 kg/m³, 360 kg/m³, 700 kg/m³ and 1210 kg/m³, respectively. For a portion of the work, the engineer permits volume batching and rectangular boxes measuring 40 cm by 50 cm have to be fabricated to measure coarse aggregate. Assume the following: (a) The mixer available will mix concrete with one bag of cement (of 50 kg) at one time. (b) Three boxes of coarse aggregate will be used in a batch. (c) When filled in a normal manner, the void content in the box is 40%. (d) Specific gravity of the coarse aggregate is 2.75. Find the height of the box.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:(i) A site is using a concrete where the unit content of water, cement, sand and coarse
aggregate are 180 kg/m³, 360 kg/m³, 700 kg/m³ and 1210 kg/m³, respectively. For
a portion of the work, the engineer permits volume batching and rectangular boxes
measuring 40 cm by 50 cm have to be fabricated to measure coarse aggregate.
Assume the following:
(a) The mixer available will mix concrete with one bag of cement (of 50 kg) at one
time.
(b) Three boxes of coarse aggregate will be used in a batch.
(c) When filled in a normal manner, the void content in the box is 40%.
(d) Specific gravity of the coarse aggregate is 2.75.
Find the height of the box.
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