Superstructure Flashcards

1
Q

Where would you typically see an RC Frame?

A

Medium-High Rise commercial or residential projects

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2
Q

How long does concrete take to cure?

A

Set: 24-48 hours`

Full cure: 28 days

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3
Q

What are the advantages of using precast concrete frame?

A

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

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4
Q

What types of upper floor are available?

A

 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.

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5
Q

What is slip forming?

A

× 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.

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6
Q

What is jump forming?

A
× 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.
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7
Q

What is a traditional roof built up of?

A
Purlin
Joist
Strut
Rafter
Hanger
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8
Q

What is cross laminated timber?

A

Glued together panels of timber to provide greater strength

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