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38 Cards in this Set
- Front
- Back
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Loads |
dead load live load wind load snow load earthquake load thermal load |
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dead load |
intrinsic weight of structure, excluding the inhabitants and subjects within |
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live load |
weight of everything else other than the fixed load 1kN = 101.97kg |
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wind load |
the force on structure arising from impact of the wind |
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earthquake load |
total force an earthquake exerts on structure magnitude: Richter Scale intensity: Mercalli Intensity F = m x a Response Spectrum |
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snow load |
downward force on the roof due to the weight of the accumulated snow or ice 2010 Minneapolis Metrodome Collapse |
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snow blow systems |
heating cable system snow guard + heating cable system snow guard system |
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thermal load |
the temperature that causes the effect on buildings (indoor outdoor air, underground, heat source equipment temperature). expansion joint load combination: |
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decks |
vertical load support horizontal load doesn't change |
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one way RC slab |
supported on two sides main reinforcement one direction |
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two way RC slab |
supported on four sides loads carried in two directions |
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flat slab system |
drop panel and column capital |
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flat plate system |
no drop panel needed, span between columns can be smaller |
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waffle slab |
two way joist system |
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rib slab |
one way joist system |
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pre tension slab |
tendons are tensioned before concrete is cast |
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post tension slab |
tendons are tensioned after concrete is cast |
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precast concrete slab |
molded concrete slab |
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Collapse of 삼풍백화점 |
illegal change change of structure: removal of slab (L reinforced concreted replaced with -) change of inside |
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Slab Systems |
two way reinforced concrete slab deck where loads are directly transferred to supporting columns |
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Parking Dimensions |
2.3m x 5 |
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Beams |
Reinforced Concrete Beam Steel Beam Composite Beam and Girder |
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Reinforced Concrete Beam |
span 1/16 - 1/17.5 |
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Steel Beam |
span 1/18 - 1/20 |
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Composite Beam and Girder |
combo of concrete and steel |
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pillar/column |
structure element through compression transmits weight of above structure to other structural elements |
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important aspects of pillar |
strength, stiffness, safety, ductility bending moment distribution buckling |
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buckling |
sudden sideways failure due to high compression |
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four time square scaffolding collapse |
lack of lateral bracing between 19th and 23rd floor |
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wall |
bearing wall shear wall basement wall retaining wall |
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bearing wall |
bears the weight of the house before |
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shear wall |
counteract the lateral load on structures between two columns |
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basement wall |
is a structure designed and constructed to resist the lateral pressure of soil |
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connection types |
shear connections semi rigid joints rigid joints smf imf omf moment frame |
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foundation |
uplift force bearing pile friction pile cast in place established |
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Structure's required characteristics |
balance strength rigidity stability |
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Stress |
tension flexure bending moment compression shear` |
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elasticity plasticity |
e: how well the object can resume its normal shape p: how easy it is to mold |
