Construction Technology and Environmental Services Flashcards
You noted a NLC project where you advised steel over timber, other than cost what would you say is the benefit of steel over timber?
- Durability
- Higher tensile strength
- Steel wont warp or flex
- Fire resistance
- Steel wont rot
What is the difference between driven and bored piles?
- Driven pile (displacement) is formed off site
- Bored (replacement) is manufactured on site
How would you measure a steel frame?
Often given quants by engineer but if not;
Use the steelwork schedule to calculate the tonnage by taking the weight and measuring the length and allowing an additional 10% for connections.
Include for intumescent paint.
Can you list some Building Regulations Approved Documents
Part A: Structure
Part B: Fire Resistance
Part F: Ventilation
Part L: Conservation of Fuel and Power
Part M: Access to and use of buildings
Part O: Overheating
Part P: Electrical Safety
What is the difference between a steel and concrete frame?
Steel:
Faster
Recyclable
Beams span longer distances
HOWEVER;
Needs fire protection
Typically has a lower bearing capacity than concrete
Volatility in prices
Concrete:
Natural fire resistance
High acoustic and thermal insulation
Greater bearing capacity
Can take cladding and other finishes directly
HOWEVER;
Takes longer to erect
Bulky and required formwork
Doesn’t span as well as steel
What are some foundation types that are available?
- Raft
- Strip
- Pad
- Piles
What are the pros and cons of manufacturing off site/MMC?
Pros:
- Higher quality finish
- Typically shorter construction programme
Cons:
- Lack of flexibility (design changes difficult).
- Transportation challenges.
- Access to site constraints.
- Plant and lifting equipment required to handle.
- Strong quality control required.
- Skilled labour required.
- Advanced payment bond may be required.
What is the purpose of a foundation?
To support the structure by transferring it’s load to the ground.
What are the two types of piles?
- Friction
- End bearing
What are the advantages and disadvantages of using steel frame?
ADVANTAGES
- Faster to erect than traditional methods
- Spans longer distances
- Recyclable
DISADVANTAGES
- Prices are volatile
- Requires further fire protection
What components are required to measure steel work?
- Beams
- Columns
- Braces
- Connections
- Fire protection
What is formwork?
A structure used to pour concrete to form the required dimensions.
Typically stripped away once concrete has set.
What are buildings regulations?
A set of approved documents to ensure new buildings, conversions, renovations and extensions are safe, healthy and high performing.
