Definition - What does Box Caisson mean?
A box caisson is a structure designed to allow construction activities to be carried out on water or in wet environments. These watertight caissons may be constructed from timber, steel or reinforced concrete. The structure is first assembled on land, and it is then sunk into to the appropriate location using sand, concrete or gravel for additional weight.
Trenchlesspedia explains Box Caisson
Box caissons are typically box-shaped prefabricated structures that are open at the top but closed at the bottom. Once sunk into place, the caisson is set on level, prepared bases where it is then anchored or ballasted in place.
This type of caisson is suitable for sites where the bearing surface is relatively level and requires minimal preparation. Box caissons are generally relatively economical when compared to other methods; however, this solution may be unfeasible where the bearing stratum requires excessive excavation, compaction and leveling.