G8 forming Flashcards
what is the max deflection in form work for architectural concrete?
CSA standard is 1/400
what is on the face of form ply?
paper-coated overlay, plastic or resin covered to give a blemish free surface
what percent stronger is form ply from regular ply?
20%
when is fibreglass-reinforced plastic (FRP) used?
forms that are unusual shapes
what are form liners used for?
to produce a texture or design
what is used to produce horizontal or vertical exposed aggregate?
gap-graded aggregate and retarder
how is colour achieved in concrete?
an added pigment, acid etching, or coloured aggregate
what is the purpose of rustication strips?
hide both sheathing joints and construction joints but also add some dimension and look
what is the purpose of a test block?
to show the architect the quality of the finished concrete surface including rustication strips and control joints
where can locations for rustication strips, control joints etc… be found?
architectural and structural drawings
what is done to achieve a high quality surface?
important for it to consolidate so incressed amounts of cement or plasticizer
what does work safe require for architectural for work?
to be approved by a professional engineer and needs to show the sequencing
where is a common place to find weld plates?
concrete stairs to attach a railing
what are weld plates used for in precast concrete construction?
used to connect sections, between footing to wall
what is the process of exposed aggregate?
the surface is washed to remove fines and cement paste
