G-2 Flashcards
What is falsework?
Temporarily support framework
What is the purpose of form sheathing?
To support and shape the fresh concrete
What are mushroom caps used to protect against?
Impalement, cuts and scratches.
Who is responsible for preparing a plan for all formwork that could possibly cause injury to any person?
The employer
What must a P.Eng. sign before each concrete placement?
An inspection certificate
What should be done if any settlement or distortion of the formwork happens.
If distortion happens the placing of concrete must stop until the formwork has been strengthened and specified and inspected by a professional engineer
What species and grade of lumber would be a good choice for formwork?
Fir/Larch and Grade #2 and better
What is commonly done to concrete forms prior to each use?
Lubricated with a product (usually an oil) that provides for form release
List two kinds of ties that are stamped from sheet metal
Strap ties and quickstrip
Describe a coil toil
The coil of wire that forms the threat at both ends of the tie
Describe overlaid plywood
Formply that has one face covered with and resin-impregnated paper
What is the purpose of a reglet?
Counter flashing fits into the reglet and overlaps roofing material to form a watertight seal
What are control joints used for?
To control random cracking?
What is the difference between an isolation joint and a control joint?
An isolation joint is a space between members that prevent cracking. A control joint controls random cracking
What type of blade is used to cut control joints in hardened concrete?
Diamond toothed blade
