A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Supporting main roadways by concrete blocks
Cylindrical lining built up of non-reinforced blocks, with temporary wood lining to support roof while concrete lining is being constructed; roadways 10 ft. diam. and airways 8 ft.; each ring has 24 blocks, 20 in. thick and weighing 250 lb. each; 13 workmen and 9 laborers, distributed in 3 shifts, advance 4.75 ft. per day including driving and lining; other shapes are illustrated as for use with reinforced blocks. Abstract translated from Annales des Mines de Belgique.
Supporting main roadways by concrete blocks
Cylindrical lining built up of non-reinforced blocks, with temporary wood lining to support roof while concrete lining is being constructed; roadways 10 ft. diam. and airways 8 ft.; each ring has 24 blocks, 20 in. thick and weighing 250 lb. each; 13 workmen and 9 laborers, distributed in 3 shifts, advance 4.75 ft. per day including driving and lining; other shapes are illustrated as for use with reinforced blocks. Abstract translated from Annales des Mines de Belgique.
Supporting main roadways by concrete blocks
Colliery Guardian
Colliery Guardian ; 137
1928
Article (Journal)
English
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