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Reinforcement, How much is enough?

Reinforcement, How much is enough?

Reinforcement, How much is enough?

(OP)
Greetings all
I am building a large patio 16ft X 30ft, 4" deep.  I am wondering how you determine the correct amount of reinforcing wire or rebar to use.  I have over seen numerous flat pours but the contractor took care of the amount of rebar required.  This time I figure that I should learn how to determine the correct amount of rebar/wire required.   Thanks

RE: Reinforcement, How much is enough?

You might want to try 10M@16, or #4 at a similar spacing, located in the centre of the 4" slab.  Make sure that your granular fill is well compacted and the bars should be well supported.  for a 4"slab, it should be sawcut into about 8'-10' panels.  Use 1-1/2" x 1/4" sawcut and caulk with a good semi-hard caulk.  Sawcutting should occur about 8 hours after the slab is finished (sooner using a soft cut type of saw.  Also want to make sure it doesn't dry out too fast using wet cure or a curing compound.

Dik

RE: Reinforcement, How much is enough?

You need to realize the mix my brother.

RE: Reinforcement, How much is enough?

(OP)
If I go with fiber reinforced concrete can I eliminate the rebar all together or should I just go with rebar and fiber reinforcement.

Thanks
StoneCold

RE: Reinforcement, How much is enough?

No and no. forget the fiber. Have a qualified contractor place and finish the slab.

Richard A. Cornelius, P.E.
WWW.amlinereast.com

RE: Reinforcement, How much is enough?

(OP)
Wow, Thanks that is so helpful.

StoneCold

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