Construction Technology

Question 1

concrete vs steel?

Answer 1

Steel ADV More flexible and has reduced construction time - lightweight possible resulting in cheaper foundations
Steel often has cheaper site costs as it is less labour intensive - recyclable

Steel DISADV Requires fire protection - Steel price fluctuates – not suitable for town centres (delivery)

Conc ADV Doesnt require fire protection - Could be cheaper than steel depending on steel market - In situ allows alteration at later stages - Good sound/heat insulator – low maintenance for insitu

Conc DISADV greater site costs as it requires more skilled labour and time – heavier – needs reinforcement

Steel Cost - £1750-1950/t
Concrete Cost - £74/m3 – airport £90

Question 2

basement construction?

Answer 2

excavate and disposalof topsoil
piles (including rig, hardstanding, testing cutting)
excavate and disposal of arisings
prep excavated surface
waterproofing
blinding
concrete to retaining walls and slab
reinforcement
formwork
finishes
internal finishes

Question 3

types of foundation

Answer 3

pad, raft, strip, piled

Question 4

types of piles

Answer 4

driven, bored - secant, sheet, contiguous, screw

Question 5

types of drainage?

Answer 5

channels, gratings, gullies

filter, narrow filter, CKD, fin, culvert, swale

Question 6

what are the buildings regs?

Answer 6

regulations that ensure minimum standards for construction and consider safe access

• A) Structure B) Fire Safety C) Site preparation and resistance to moisture D) Toxic substances E) Resistance to sound F) Ventilation G) Sanitation, hot water safety and water efficiency H) Drainage and Waste Disposal
• J) Combustion Appliances and fuel storage systems K) Protection from falling, collision and impact
• L) Conservation of fuel and power M) Access to and use of building
• N) Glazing – safety in relation to impact, opening and cleaning (WITHDRAWN – EXCEPT WALES)
• P) Electrical safety Q) Security – Dwellings R) Physical infrastructure for high speed-electronic communication networks 7) Materials and workmanship

Question 7

types of basement

Answer 7

retaining wall and raft
box and cellular raft
piled