You are ready for the foundation make-up at the completion of the foundation plumbing and once you have verified all of the plumbing locations. Often times, depending on the city requirements, you will also need the foundation rough inspection completed prior to moving forward with the foundation make-up. This phase of construction consist of the contractor trenching the foundation beams, grading the foundation form fill to achieve the desired slab thickness, and installing the foundations vapor barrier.
FOUNDATION MAKE-UP CHECKLIST
Foundation Pads
Slab not to be more than 4″ thick (or engineers recommendation of slab thickness)
Pads tamped until firm under the foot
Pads sloped down at a rate of 1″ vertical height decrease for every 12″ in horizontal distance in dropped areas (garages, patios, etc)
Properly sloped at brick ledges to ensure 4″ slab thickness under form floats (brick ledges)
String ran diagonally across form boards for use in checking slab thickness in pads
Foundation Beams
Proper depth per engineering requirements
Conform to beam detail/schedule provided by slab engineer
Beam depths maintained in wingwalls and column footings
Check plan details at fireplaces to ensure beam depth doesnt increase
Foundation Vapor Barrier
Poly vapor barrier taped at all splices, holes, and penetrations from pipes
Poly tightly conforms to beams (no air pockets at bottom of beams)
Poly completely covers bottoms of beams, footings, wingwalls
Poly complete under all pipes passing through beams
No lumps or holes in sand under vapor barrier
Plumbing Checklist during Makeup
Plumbing lines crossing beams coated with black mastic
Tub buckets have 4″ of air space between bucket and foundation pad (for a 4″ thick slab)
Pipes not damaged by contractor when trenching foundation beams
