Extension Slab

The Extension Slab Estimating Calculator allows you to build up layers of Labour, Material and Plant that go to build up a typical extension slab.

The Extension Slab Estimating Calculator calculates the following items:

• Preparation of substrate
• Subbase
• Damp proof membrane
• Concrete slab
• Associated plant
• Plus all labour associated with the above

The Extension Slab Estimating Calculator is linked to the Specification.

NOTE:

• You must enter any lump sum items such as plant.
• It is assumed in this Estimating Calculator that the site level has been reduced prior to preparation of the slab using the Site Strip Estimating Calculator.