CO129-238 - Governor Des Voeus - 1888 [7-8] — Page 421

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but with slopes steeper than those here proposed, and there is therefore the lest of practical experience in

addition to the main reconemenda ir. Economy

tion to granite rubble

becau

wadlo

of cost. If there were any exposure to heavy rollers the form of rubble foundation shewn in the tracing would scarcely be-

admissible and recourse would

have been had to a design with piling or concrete blocks. That- there will be vertical settlement in the rubble foundations until the superineumbeut

pressure neitralized by the incompressi = :bility of

the clay bed is certain, but such subsidence is capable

of being made good by adding to the height of the wall by –

specially cut coursed

as has pre

oroicaly