what can i use to take up space when pouring concrete

Discussion in 'Bricks, Masonry and Concrete' started by skimmilk68, Jun 10, 2012.

  1. Jun 10, 2012 #1

    skimmilk68

    skimmilk68

    skimmilk68

    Member

    Joined:
    Mar 20, 2012
    Messages:
    11
    Likes Received:
    0
    I'm building concrete stairs about 7 feet wide and going down 3 feet so about 3-4 steps. That would be a lot of concrete to pour so can I put bricks or cinderblocks in the form to take up the volume?

    I know people pour dirt when building a concrete slab... I don't think that would work for concrete stairs though..


    Read more: http://www.doityourself.com/forum/b...ake-up-space-concrete-form.html#ixzz1xQ5fnPp3
     
  2. Jun 11, 2012 #2

    BridgeMan

    BridgeMan

    BridgeMan

    Well-Known Member

    Joined:
    Aug 11, 2011
    Messages:
    744
    Likes Received:
    80
    I've used the old, broken up concrete as a "center" for new step placements. Supplemented by any large boulders in the neighborhood. The trick is not to go overboard with any fill you put in there, or the quality of the step may suffer if the finished concrete is too thin (especially if you're too stingy with your rebar).
     
  3. Jun 14, 2012 #3

    skimmilk68

    skimmilk68

    skimmilk68

    Member

    Joined:
    Mar 20, 2012
    Messages:
    11
    Likes Received:
    0
    will cinder blocks work? or any solid object for that matter?
     
  4. Jun 15, 2012 #4

    CallMeVilla

    CallMeVilla

    CallMeVilla

    Well-Known Member

    Joined:
    Feb 9, 2010
    Messages:
    1,651
    Likes Received:
    594
    Do not use loose dirt because it will settle. Cinder blocks (chunks and pieces?) will work fine. Clean rocks are great. Tamp the cement deeply to settle the pour. I like vibrating my foundation cement if you can access a concrete vibrator.

    Make sure your make a continuous pour so everything bonds. Don't pour one day and then pour hours later or even on another day.

    Good luck!
     

Share This Page