# Shared Flashcard Set

## Details

Structures
Test 2- 4a-6
34
Engineering
04/26/2011

Term
 plate girder
Definition
 custom beam fabricated by welding plate together. used by Mies to thicken beam moment.
Term
 bond stress
Definition
 stress develops when you load beam, the friction between the steel and the concrete
Term
 development length
Definition
 length needed for bar to develop to its full capacity.
Term
 lateral moment of inertia
Definition
 pull edge out to edge to increase moment of inertia. measure of an objects resistance to rotation.
Term
 pre-cast concrete
Definition
 concrete cast out of place
Term
 steam curing
Definition
 induced, faster, more uniform
Term
 hinge connection
Definition
 transfer shear. moment = 0 at ends
Term
 pin connection
Definition
 transfer shear. moment = 0 at ends
Term
 shear connection
Definition
 attach at web because thats where the shear stress is.
Term
 deflection
Definition
 deflection=( K x load x length) / (moment of elasticity x area)
Term
 balanced section
Definition
 cantilever
Term
 moment connection
Definition
 transfer moment. moment = 0 at ends
Term
 fixed connection
Definition
 transfer moment. attach @ flanges b/c thats where bending stress is.
Term
 rigid connection
Definition
 transfer moment
Term
 suspended structure
Definition
Term
 cable-hung
Definition
 load held in tension by cables
Term
 elastic limit
Definition
 right before steel yields
Term
 plastic
Definition
 when steel yields
Term
 plastic hinge
Definition
 can't take any more moment. happens when steel is yielding
Term
 mechanism
Definition
 formation of an unstable structure
Term
 ductile frame
Definition
 basically always steel frame.
Term
 induced moment
Definition
 movement generates bending stress in fixed connections
Term
 why is a simply-supported constant cross section beam inefficient?
Definition
 because moment isn't constant, but beam is. means you have to design the whole beam for the largest moment, even thou most of the beam doesn't need it.
Term
 two methods to anchor steel rebar
Definition
 hook, bonded
Term
 six factors that effect a beam's deflection
Definition
 = (load x length) / (modulus of elasticity x area)also, prestressing, and k (effective length & support conditions)
Term
 can draped prestressing tendons be pretensioned?
Definition
 no, they wouldn't be draped.
Term
Definition
 so you don't chip the corner. provides level of clearance for deflection
Term
 details for bearing connection
Definition
 bearing plate, chamfering the edge, shear key
Term
 why are fixed connections hard to achieve in wood?
Definition
 wood has directionality. glue is sucked into the grains
Term
 necessary detailing in two steel WF sections?
Definition
 magic box
Term
 necessary detail in cold joint?
Definition
 grout
Term
 lateral bracing
Definition
 on compression side
Term
 additional costs when building's structure is exposed?
Definition
 temperature- expands/contracts, differential settlement.
Term
 shear key
Definition
 anything to help take up the shear stress
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