Need help with calculation!

[Sasquatch912]

Well lowes sold out of the rebar before I could even make it over there.

****..

I may just get what they have and put the rebar in the area where I will pull equipment through. What do yall think?

 

[ard]

Halfassed.

IMO

 

[Sasquatch912]

Well some of the area wont have the weight of equipment on it..itll have cabinets and stuff..



ill see if i can find more rebar

 

[lakeroadster]

Well lowes sold out of the rebar before I could even make it over there.

****..

I may just get what they have and put the rebar in the area where I will pull equipment through. What do yall think?

The reinforcing steel imposes loads on the concrete. For a slab on grade of uniform thickness having reinforcing steel in some areas and not in other may lead to some issues.

Uniformity and consistency is a good thing.

How is the sub-grade compaction? Did you have it tested as previously discussed?

 

[ard]

if you can haul 20' rebar, just make the drive up to the orange place- they are open late, and early!

 

[Sasquatch912]

The reinforcing steel imposes loads on the concrete. For a slab on grade of uniform thickness having reinforcing steel in some areas and not in other may lead to some issues.

Uniformity and consistency is a good thing.

How is the sub-grade compaction? Did you have it tested as previously discussed?

No, how will i test? It is clay. It hardens up like concrete.

 

[Sasquatch912]

ok im getting 64 rebar. how many chairs will i actually need?

 

[ard]

Well, since the rebar will basically be tied into a huge linked mesh (using wire ties. or wire on a spool you wrap and cut...you know about this, yes? If no, Youtube it.)

So you do not need a TON of chairs- basically enough to hold it all about 2" off the ground. Say on every other piece of rebar, and every 4-5 feet along each piece... So I think 6x8=48?

 

[lakeroadster]

No, how will i test? It is clay. It hardens up like concrete.

Proctor hardness testing. Same test the county and state does on every project they perform.

https://en.wikipedia.org/wiki/Proctor_compaction_test

You call a testing company, they come out and test the compaction, and tell you if it is adequate.

The testing was less than $200 on my barn sub-grade.

 

[rburke65]

73fxe....I don't think rebar is a requirement for a lift.

 

[Sasquatch912]

Concrete is done. Thanks for the help folks.

Think Im gonna lay epoxy after putting the building up.

 

[brownbagg]

3 bars = 30'
1 foot spacing= 30x3 x2 = 180 bars to build a grid of 1' squares

3 bars doesnt equal 30 feet, you got have 2 foot lap so the out side bars are 8 ft and the inner six
so that 22 feet for 3 10 ft bars

 

[Sasquatch912]

I did run short of rebar but it was too late..the concrete man was already coming. 64 wasnt enough. Though I didnt cut them..think thats where i screwed up at.

I got most of the rebar where the heavy load will be.

 

[ard]

Though I didnt cut them..think thats where i screwed up at.

For sure.

 

[Sasquatch912]

For sure.

I was trying to remember but didnt have my angle grinder

I rushed with this because everyone helping me was off on the same day and the concrete guy was coming.

I noticed the extra foots of bar lap but had a brain fart.


Also...I keep hearing if the rebar isnt 2" below the surface of the concrete then it really isnt helping. Is this true?

I poured 6" of concrete. The chairs I used were 2".

 

[TractorJeff]

I've heard that too.

 

[Sasquatch912]

I've heard that too.

If true..that would ****..but i guess a little rebar in it is better than none.

Ill start putting up my shop this weekend. Maybe put tractor on it and see how it holds.

Already got dog prints on it and my co workers wanted to put their hand print in it.

 

[Know Wosad]

Refreshing. Roadster has the game figured out