1. Substructure Construction Sequence?

2. Plot of Ground

3. Remove Topsoil

4. Excavate

5. Lay Foundation What material is used? Concrete Why?
Strong in compression
BUILDING
LOADS
What is the function of the foundation?
Transfer the loads safely to the subsoil

6. Build substructure walls
What materials are used?
Blocks/bricks
What is the function of the cavity fill?
Stabilise the substructure wall

7. Excavate internal floor level
To accommodate internal floor construction?

8. Backfill With compacted hardcore internally. Why?
Provide a firm sub-base for floor construction as soil is compressible
What materials are used?
Any dense materials but no organic materials

9. Blinding What is blinding? Fine granular material e.g. sand
What is its purpose?
Prevent the DPM being pierced/punctured
Damp-proof membrane e.g. polythene sheet
What is a DPM?
What is its purpose?
Prevent vertical passage of moisture from ground

10. Lay Slab
What material is used?
Concrete

11. Construct Superstructure
Lay DPC?
What is a DPC?
Damp-proof course
What is its purpose?
Prevent vertical passage of moisture in wall
What is the purpose of a wall tie?
What are the red ‘clips’?
Stabilise the wall
Retainers that clip on the wall ties to hold insulation in place

12. Finish Floor Lay Insulation
Reinforcement is placed in the screed, why?
Lay Floor screed
Because the screed is not bonded to slab it will crack otherwise

13. Wall Finishes
Plaster walls
Fix Skirtings