Cost estimation for civil work is Learning cost estimating by examples
Excavation for foundation
include Equipment rates and forming crews
Filling under foundation
layers under foundation
Reinforced Concrete Raft
Include labor manhours
equipment rates
Waterproofing for foundation and walls
Include labor manhours
equipment rates
Reinforced Concrete Columns
Include labor manhours
equipment rates
Reinforced Concrete slab
Include labor manhours
equipment rates
this include estimate template
you will be able to apply this approach for any item