Group 1 Flashcards
What is superstructure
All internal and external works items above the damp proof course
What is substructure
All elements of work that are undertaken below the damp proof course
Provides a basis for the superstructure to be constructed upon
What are the main site considerations
Access
Storage
Accommodation
Temp services
Plant
Fencing and hoarding
Health and safety risks
What is Part L of building regs
Conservation of fuel and power
Part A of building regs
Structure
Part B of building regs
Fire
Different types of foundations
Strip
Pad
Piling
Raft foundations
Different types of piles
Sheets piles
Secant piles
Bored piles
Pre-cast piles
What is a raft foundation?
- they spread the load of the superstructure over a large base and reduce the load per m2 of the area
- raft foundation solutions are useful in low bearing soils
- They can be a solid raft slab or beam and slab raft such as a ground beam system and suspended PC concrete ground floor
What conditions would you expect a raft foundation to be used for a substructure?
- A raft can be used for lightly loaded buildings on sites with poor soils
- Heavy loads to the raft have the potential to cause the raft to move sideways as a result of raft foundations not being very deep
What is a strip foundation?
- Strip foundations are formed by creating shallow continuous excavation to support the perimeter and internal walls
- They are also referred to as strip footings and are suitable for most subsoils and a light structural design.
What are pad foundations?
- Pad foundations provide a base for reinforced concrete or steel columns.
- They are usually formed by making an isolated excavation in the shape of a square or rectangle
- They often have reinforcement mesh as part of the construction and spread the load to a layer of bearing soil or rock below
What are benefits of clt
- Can be sustainably sourced
- quick construction on site
- fire resistance can be achieved
- reduced on site labour needed
Drawbacks of clt?
- more expensive that steel and concrete
- reputation of timber buildings
- acquiring insurance / warranty
What allowances would you include for when measuring a clt frame
- sounds insulation
- fire line boarding / encapsulation
- protection from elements during construction
- 280/m2