chp 7 Flashcards
1
Q
what does falsework consist of
A
- formwork
- mould boxes
- shuttering
- centering
2
Q
what does formwork consist of
A
- soldier
- tie
- struts
3
Q
materials used for making formwork
A
- timber
- steel
- fiberglass
- plastic
4
Q
general requirements of formwork
A
- strength
- alignment
- surface finish
- economy
5
Q
precaution before striking formwork
A
- sufficient strength to support itself
- sufficient surface hardness to resist damage
- sufficient curing to give a reasonable colour finish
6
Q
treatment of formwork
A
- all working surface should be treated with mould oil to prevent concrete adhering to them
- for smooth surface the formwork is lined with plywood, hardboard and plastic sheeting
- for patterned surface, patterned rubber sheets or plastic sheets are used to produce the desired pattern
