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Correct selection of materials and choice of suitable design are important factors; materials and approximate costs; strength and quality of cement; nature and grading of aggregates; suitable cross-section; molds; reinforcement; curing of concrete props. (See also Iron and Coal Trades Rev v 139 n 3745 Dec 8 1939 p 787-9; Colliery Guardian v 159 n 4119 Dec 8 1939 p 821-4; Colliery Eng v 17 n 191 Jan 1940 p 9-12 and 19)
Correct selection of materials and choice of suitable design are important factors; materials and approximate costs; strength and quality of cement; nature and grading of aggregates; suitable cross-section; molds; reinforcement; curing of concrete props. (See also Iron and Coal Trades Rev v 139 n 3745 Dec 8 1939 p 787-9; Colliery Guardian v 159 n 4119 Dec 8 1939 p 821-4; Colliery Eng v 17 n 191 Jan 1940 p 9-12 and 19)
Reinforced-concrete pit props
Concrete Constr Eng
Evans, W.H. (author)
1940
4 pages
Article (Journal)
English
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Engineering Index Backfile | 1940
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