Undercroft Car Park and Full Basement Installation
Mammoth Movers can raise buildings to allow for the installation of a car park. We can also use our technology to underpin a building at its current height, enabling the installation of a cellar or car park below-grade.
This method provides a reduced impact on the streetscape while allowing for increased floor area or storage space. It also enables significant increase in office carpark availability on a restricted site.
Cellar installation approaches have been well developed in New York, where no land tax is applicable to floor area below grade.
Step 1: Excavation
The installation of a cellar/basement/car park requires the excavation and installation of cribbing support columns which transfer the load from the existing building down to the proposed new height underground floor level.
Step 2: Steel beam installation
Steel beams are installed on top of the cribbing columns and shimmed out to transfer the weight load of the building onto the cribbing columns.
Step 3: Additional excavation
The remainder of the area under the building is excavated to provide the relevant clear area for the new basement or carpark.
Step 4: Footing Installation
New footings are installed and new basement walls or columns are installed to support the building, transferring the weight load of the building to the new foundations
Step 5: Lowering
the building is lowered onto the new support system and the temporary cribbing, jacks and steel support is removed.
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