Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 271
Fig. 823.—Conventional View of Joints of Centres. centres are also supported in the middle bytrestle shoring, which will take a full share ofthe load, and thus to a large extent reduce … Fig. 822.—Conventional View of Collars to supportthe Springing of Arches. of ordinary earths the excavation for thefoundation would require to be timberedstrongly, so as to prevent any movement.The shoring having been placed in position,the centres can next be erected and forcedhome so as to fit…
Carpentry · Joinery
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