Precast Concrete Pit Sheeting
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The development of lightweight concrete slabs in place of wood planks for pit or box sheeting elimi- nates future settlements of underpinned structures when the buried sheeting rots. Practical use has dem- onstrated that concrete planks add little to the cosl of such work. A summary of the history of box sheeting and of the various types used shows the possibilities for the use of concrete in this phase of construction work.