G5 - Embedded Items and Concrete Fasteners Flashcards
What is the usual surface of steel reinforcing bars?
deformed
When not specified by an engineer, what is the overlap when splicing two horizontal pieces of rebar?
24 bar diameters
What are loop inserts in pre-cast concrete units designed to be used with?
coil bolts
What is used to help position anchor bolts prior to concrete placement?
set into braced templates
How are anchor bolt threads protected during concrete placement?
they are often taped
When rebar is used to prevent the bolts from withdrawing, where should the rebar be placed?
just above the bend in the bolts
Why are metal angles embedded into the edge of a concrete structure?
protect the edge
What is a common way pre-cast concrete panels can be secured to the foundation?
weld plates
What movement do smooth dowels help prevent when joining two sections of a slab ?
independent vertical movement
What are manhole covers and grates made from?
cast iron
What is cast into a concrete wall to secure counter-flashing?
reglets
Where are waterstops installed?
construction joints
What are waterstops for concrete made of?
rubber and plastic
Why are split serrated waterstops easier to install than other types of waterstop?
the bulkhead can be a single piece
Which kind of reglet does not require caulking?
cast-in-place
Why are job-constructed reglets made in two parts?
to make them easier to strip
What is a main concern when installing formwork for a pit-mounted dock leveler?
ensure that the forms do not float
Why do some steel door-frames have extra deep (wide) head frames?
ensure that the top of the frame lines up with the masonry courses
What is attached to a door buck to allow easy fastening of a wood door jamb?
reverse key
Name the fastener shown here.
wedge anchor
Name the fastener shown above
pin bolt
