Soil on concrete structure, DL or LL?
Soil on concrete structure, DL or LL?
(OP)
I have a soccer field on top of a prestressed concrete parking garage. Is the soil DL or LL?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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Soil on concrete structure, DL or LL?
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RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
By that definition, it's not a Dead Load.
RE: Soil on concrete structure, DL or LL?
Now this is a Special-Purpose roof (2009 IBC section 1607.11.2.2) but per the 2009 IBC section 1607.11.3 Landscaped roofs. "...the uniform design live load in the landscape area shall be 20 psf. The weight of the landscaping materials shall be considered as dead load and shall be computed on the basis of saturation of the soil."
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
For concrete detention vaults, the dead load of the soil above is used, in addition to the dead load of the vault, to prevent it from becoming bouyant.
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
Dry unit weight with min expected fill for 0.6D cases
Saturated unit weight with max expected fill for others
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
RE: Soil on concrete structure, DL or LL?
The occupancy above the soil would be a live load, though.
RE: Soil on concrete structure, DL or LL?
+1 Live for seismic and uplift but I am on the fence about this. In a seismic event it may be liquified and unfixed, uplift is just being conservative... Never had to deal with this before.
MAP