Superstructure

Question 1

Where would you typically see an RC Frame?

Answer 1

Medium-High Rise residential projects

Question 2

How long does concrete take to cure?

Answer 2

Set: 24-48 hours

Full cure: 28 days

Question 3

What are the advantages of using precast concrete frame?

Answer 3

Produced in factory-controlled conditions
Eliminates curing times and formwork
Can be assembled in cold weather and generally by semi-skilled labour

Question 4

What types of upper floor are available?

Answer 4

 In-situ reinforced concrete – can be ribbed or waffled to reduce depth and weight (effectively a honey comb effect)
 Pre-cast concrete – for example, pot and beam composite floor.
 Profiled steel deck (Metsec) acting as permanent soffit and formwork. In-situ concrete in-fill. Principally used on steel framed buildings.

Question 5

What is slip forming?

Answer 5

A method for constructing a repetitive structure such as a core, lift shaft or stairwell.
The formwork is constantly moving upwards, approx. 1” every 10mins.

Question 5

What is a traditional roof built up of?

Answer 5

Purlin
Joist
Strut
Rafter
Hanger

Question 6

What is jump forming?

Answer 6

Jump forming is where a significant height of concrete is cast and left to cure.
The whole formwork module is then moved up and repeated.

Question 7

What is cross laminated timber?

Answer 7

Glued together panels of timber to provide greater strength

Question 8

Advantages of concrete?

Answer 8

No requirements for fire protection
Good acoustic properties