Tuesday, May 10, 2011

FILLER SLABS

  • In a simply supported RCC slab, the upper part of the slab is subjected to compressive forces while the lower portion is subjected to tensile forces. Concrete is very good in compression while it is weak in tension. Hence the steel reinforcement is placed in the tension zone. The concrete in this portion is only for holding together the steel reinforcement and has no structural purpose. This 'un-productive' concrete can be replaced by a 'Filler' material which will reduce the weight of the slab and also reduce the cost by reducing the amount of concrete used. Also, since the weight of the slab is thus reduced, lesser steel is also required for reinforcement, further reducing the cost.
  • There is no reductoin in the structural strength of the slab at all and it will act as a normal load bearing slab.
  • Common filler materials are light weight materials like Mangalore tiles, clay pans, bricks, waste bottles, coconut shells, thermocol etc.
  •  Reduces the cost of the slab by around 25-30%
  •  Creates interesting designs and patterns on the ceiling
  • Helps in better thermal insulation of the slab due to the air pockets present.
  •  Reduces the load on the foundation

A Typical Filler slab in Centre for Development Studies, Trivandrum



A filler slab roof using clay pans

Reinforcement details & clay pan positions

view showing reinforcemnt with roof tiles in between

Typical cross-section


View of finished ceiling




14 comments:

  1. This comment has been removed by a blog administrator.

    ReplyDelete
  2. Hi there to every body, it's my first visit of this web site; this website contains amazing and really good stuff in support of readers.

    Also visit my site - juegos para pc

    ReplyDelete
  3. This comment has been removed by a blog administrator.

    ReplyDelete
  4. Heya i am for the first time here. I came across this board and I
    find It truly useful & it helped me out a lot. I hope to give something back and help
    others like you aided me.

    Green coffee

    ReplyDelete
  5. Hi! Do you use Twitter? I'd like to follow you if that would be ok. I'm definitely enjoying
    your blog and look forward to new posts.

    Feel free to visit my blog post Enduros Male Enhancement Review

    ReplyDelete
  6. This comment has been removed by a blog administrator.

    ReplyDelete
  7. Howdy just wanted to give you a quick heads up.

    The words in your post seem to be running off the
    screen in Internet explorer. I'm not sure if this is a formatting issue or something to do with web browser compatibility but I thought I'd post to let you know.
    The design and style look great though! Hope you get the problem fixed soon.
    Thanks

    my web blog :: http://scratchwiki.shirky.com/wiki/User:Margot98R

    ReplyDelete
  8. Will the filler slab have the same load bearing capacity as supposed to conventional technology?

    ReplyDelete
  9. Will the filler slab have the same load bearing capacity as supposed to conventional technology?

    ReplyDelete
    Replies
    1. Hi Sireesha, the filler slabs will have similar load bearing capacity as only the concrete which is in the tension part of the slab is replaced by the filler material. This concrete doesnt add to the strength of the slab as all the tension is taken up by the reinforcement rods. So there is no loss of strength.

      Delete
  10. Sujith , Can you suggest some good filler material as the Bricks and earthern pots are now a days equally costly and does not gice a saving, Plastic bottles might not give the bonding and there will be a chance of leakage .

    Pl mail me ...milindsbabar@gmail.com
    Thanks in advance

    ReplyDelete
  11. Can filler slab be used for high rise buildings?

    ReplyDelete
  12. Thank you for this blog. That's all i can say..useful information shared...


    Acrylic Sealant

    ReplyDelete