INTROdUCTION
3.1 Structural
Systems
Typical Structure Bays Column layout is the most important structure A
proper column arrangement is neccessary in order to utilize every square foot of a parking garage.
Different structure systems allow for
different column layouts. Sitcast structures tend
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fundamentals
consideration concerning parking garages.
to use more columns due to a shallow concrete slab. Precast elements can be post-tensioned,
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allowing for spans reaching up to 60 feet. This allows for less columns, however the columns structures are the most ideal for column layouts, for the reason that they can be moved to the exterior.
However they must be fireproofed,
which brings up cost and affects apperience. The following 5 plans are typical column layouts for parking garages utilizing sitecast, precast or steel structures. PLANNING AND DESIGN
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types
used are bulky and can hinder striping. Steel
A two way sitecast slab system yeilds the least efficient column layout. Columns are located within the parking deck, making it difficult for re-striping. Avoid using this layout only if neccessary or specified by the client.
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1. This type of structure layout is used for pouredin place construction. Sitcast concrete systems can not span as long as precast or steel, therefore more columns must be used, limiting the total number of spots per floor. Column configu-
SOURCES
ration also limits striping possibilities.