Garage Floor Load

Discussion in 'Building Construction' started by john smith, Feb 12, 2004.

  1. john smith

    john smith Guest

    I am in the process of building 24X22 2 story garage and wondering if anyone
    can provide the live load capacity of the second floor. The building will
    have a full basement under the floor where the cars are parked. Here are the
    particulars:

    2X10 joists on 1 foot centres. Span is 10 Feet.

    6 X 10 beem down the centre with Steel jack posts every 6 feet.

    I would like to be able to park two cars and have a 4" concrete floor
    susspended.

    Thanks
    john smith, Feb 12, 2004
    #1
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  2. - john smith -
    > I am in the process of building 24X22 2 story garage and wondering if

    anyone
    > can provide the live load capacity of the second floor. The building

    will
    > have a full basement under the floor where the cars are parked. Here

    are the
    > particulars:
    >
    > 2X10 joists on 1 foot centres. Span is 10 Feet.
    >
    > 6 X 10 beem down the centre with Steel jack posts every 6 feet.
    >
    > I would like to be able to park two cars and have a 4" concrete floor
    > susspended.


    - Nehmo -
    You're doing it backwards. First, you need to determine what loads the
    structure will encounter. Then, you design accordingly.


    --
    *********************
    * Nehmo Sergheyev *
    *********************
    Nehmo Sergheyev, Feb 12, 2004
    #2
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  3. john smith

    john smith Guest

    Sorry, the building will be two stories including the basement. And no
    building is not built just have the foundation poured looking for advice on
    the floor system so that I minimize costs and keep the basement as useable
    as possible.

    Thanks
    "" <> wrote in message
    news:JQPWb.9066$...
    > This will vary with local building codes. Call your code compliance dept.
    > Also, do you mean 2-story with a basement (i.e. another story on top of

    the
    > parking area), or 2 stories including the basement (i.e. cars are parked

    on
    > 2nd story)?
    >
    > Jeff
    >
    >
    > "john smith" <> wrote in message
    > news:sHPWb.94144$...
    > > I am in the process of building 24X22 2 story garage and wondering if

    > anyone
    > > can provide the live load capacity of the second floor. The building

    will
    > > have a full basement under the floor where the cars are parked. Here are

    > the
    > > particulars:
    > >
    > > 2X10 joists on 1 foot centres. Span is 10 Feet.
    > >
    > > 6 X 10 beem down the centre with Steel jack posts every 6 feet.
    > >
    > > I would like to be able to park two cars and have a 4" concrete floor
    > > susspended.
    > >
    > > Thanks
    > >
    > >
    > >

    >
    >
    john smith, Feb 12, 2004
    #3
  4. john smith

    Bob Morrison Guest

    In article <sHPWb.94144$> john smith
    says...
    > I am in the process of building 24X22 2 story garage and wondering if anyone
    > can provide the live load capacity of the second floor.
    >


    Uniform Building Code requires floor live load capacity of 50 psf OR a
    concentrated load of 2000 pounds applied to an area of 20 sq. in.
    located anywhere in the structure.

    --
    Bob Morrison
    R.L. Morrison Engineering Co.
    Structural and Civil Engineering
    Poulsbo WA
    Bob Morrison, Feb 12, 2004
    #4
  5. john smith

    Phil Scott Guest

    "Bob Morrison" <> wrote in message
    news:...
    > In article <sHPWb.94144$> john smith
    > says...
    > > I am in the process of building 24X22 2 story garage and wondering if

    anyone
    > > can provide the live load capacity of the second floor.
    > >

    >
    > Uniform Building Code requires floor live load capacity of 50 psf OR a
    > concentrated load of 2000 pounds applied to an area of 20 sq. in.
    > located anywhere in the structure.


    The key word there is is *live. that would be a load in excess of the dead
    load due to seismic activity or for instance driving a car in fast and
    stopping hard etc. The floor support needs to be seen by a structural
    engineer imho. or at the very least a state licensed general contractor...
    if you do it without such advice it would be smart to oversize the lumber,
    double up every other stringer, bolt the doubled up stringers together as
    well... block them all well, then secure your metal concrete support decking
    to the stringers with at least 3" long x 5/16" lag bolts with 1" flat
    washers under the heads, every 12" or so.

    The load needs to be figured on a worst case basis...will you or the next
    owner back a 3/4 ton pickup loaded with gravel in there some day? It could
    happen. So that has to be the load along with an assortment of worst case
    gargage cludge.

    In this case a structural engineer could save you some trouble.

    Phil Scott



    >
    > --
    > Bob Morrison
    > R.L. Morrison Engineering Co.
    > Structural and Civil Engineering
    > Poulsbo WA
    Phil Scott, Feb 13, 2004
    #5
  6. I would have an engineer design it without using 2X10's to hold the concrete.
    Using 2x10's to hold up concrete is not a good idea.
    2X10's bend and concrete doesn't bend much before it cracks.
    I would use corrugated metal decking to hold up the concrete until it cured.

    --
    JerryD(upstateNY)
    "Phil Scott" <> wrote in message news:c0hi2s$9eu$...

    "Bob Morrison" <> wrote in message
    news:...
    > In article <sHPWb.94144$> john smith
    > says...
    > > I am in the process of building 24X22 2 story garage and wondering if

    anyone
    > > can provide the live load capacity of the second floor.
    > >

    >
    > Uniform Building Code requires floor live load capacity of 50 psf OR a
    > concentrated load of 2000 pounds applied to an area of 20 sq. in.
    > located anywhere in the structure.


    The key word there is is *live. that would be a load in excess of the dead
    load due to seismic activity or for instance driving a car in fast and
    stopping hard etc. The floor support needs to be seen by a structural
    engineer imho. or at the very least a state licensed general contractor...
    if you do it without such advice it would be smart to oversize the lumber,
    double up every other stringer, bolt the doubled up stringers together as
    well... block them all well, then secure your metal concrete support decking
    to the stringers with at least 3" long x 5/16" lag bolts with 1" flat
    washers under the heads, every 12" or so.

    The load needs to be figured on a worst case basis...will you or the next
    owner back a 3/4 ton pickup loaded with gravel in there some day? It could
    happen. So that has to be the load along with an assortment of worst case
    gargage cludge.

    In this case a structural engineer could save you some trouble.

    Phil Scott



    >
    > --
    > Bob Morrison
    > R.L. Morrison Engineering Co.
    > Structural and Civil Engineering
    > Poulsbo WA
    JerryD\(upstateNY\), Feb 13, 2004
    #6
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