The development of building estates : a practical handbook for the use of surveyors, agents, landowners, and others interested in the development, management, equipment administration, or realization of building estates (1910)
Bright, Tom · London : B. T. Batsford · leaf 217
Fig. 13. StLT-ADJUSTiriOJOIMT … Fig. 14. Sight Rails.—To facilitate the laying of the pipestwo or more sight rails should be set up and levelled,as indicated in the following sketch (Fig. 15). Fromlevels previously taken, the first sight rail is set up atthe point D, at the lower end of the drainage, 15 feet(length of boning rod)…
City planning · Housing
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