Chapter 11 Flashcards
Fire resistive construction is given the largest permissible area and heights allowed, including ___ area and height.
Unlimited
While curing, concrete generates ___.
Heat of hydration
Concrete is weak in ___ strength and has poor ___ resistance.
Tensile… shear
There are two basic types of concrete construction.
1.
2.
Cast in place concrete
Precast concrete
A short column with a large cross section in proportion to its length is called a ___.
Pier
For any unit of area, steel has ___ times the compressive strength of concrete.
15
Autoclaved aerated concrete(AAC) is relatively lightweight when compared with traditional concrete, ___ the weight by volume.
1/4
Shear resistance of ___ slabs is poor.
post-tensioned slabs
Formwork can represent ___ of the cost of concrete structure.
60%
As concrete sets, the pressure is ___ due to internal friction.
Reduced
Concrete poured at 50°F will develop ___ more pressure than at 70°f.
1/3
Precast concrete buildings under construction are unstable until all connections are completed. Temporary bracing, such as ___ (adjustable poles set diagonally) or cables, hold the units in place.
Tormentors
___ concrete presents a greater catastrophic collapse hazard during a fire then does conventional reinforced concrete.
Post-tensioned
Fire proofing of steel is classified as ___ or ___.
Individual… membrane
Fire proofing is applied to meet the standards required by the local ___.
Building code
