Re: Flat metal concrete screed support vs pipe
[Re: Duckstick80]
#6538842
05/16/19 07:58 PM
05/16/19 07:58 PM
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strike2x
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Good luck.... Just guessing, but I would bet there is a reason pipe is used instead of flat. You can't screed on something that is not equally rigid in all directions. I definitely wouldn't try to prove I could on a sizable job with the cost of concrete these days.
Wish I had more time to trap....
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Re: Flat metal concrete screed support vs pipe
[Re: Duckstick80]
#6538889
05/16/19 09:42 PM
05/16/19 09:42 PM
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Posts: 4,172 uniontown pa
gutthooked
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Always used pipe or ran on the forms, I bet it works as good as the rail is set.
Don't limit your challenges Challenge your limits
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Re: Flat metal concrete screed support vs pipe
[Re: lee steinmeyer]
#6538891
05/16/19 09:43 PM
05/16/19 09:43 PM
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Duckstick80
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If it is suported well, like the yokes you showed, it should work super. The problem with flats is they have no side support, so more yokes would be better. Also the width of the flat would make a difference, depending on the weight of the screed, and width of span. How thick and wide were you planning? I'm pouring 23.5 ' wide and 22.5 on part of it past the floor drain. It will be split again around the drain. There is 2" foam then 4.5"-5" around the flat screed bar.The bar is 1/4" x 2" supported every 2'. There will be concrete placed on both sides before it's screeded. The pro's of this is not throwing shovel loads of concrete at the 2" hole the pipe leaves after it's screeded. Then you have to bullfloat it all in after one side has sat for awhile.
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Re: Flat metal concrete screed support vs pipe
[Re: AKAjust]
#6538912
05/16/19 09:58 PM
05/16/19 09:58 PM
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Duckstick80
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So you are pouring it all at once. Yes but no, the screed will span half of the width and the flat steel screed bar holds up the screed in the middle of the slab and it's removable after it's screeded. I need to slope a 30'x30' of the 46x56 because part of it is a garage. I just run another screed support inline with the drain and slope it down to the drain. Screed half of that at a time and the floor will be sloped to the drain. Then outside of garage area move the big screed over and finish it.
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Re: Flat metal concrete screed support vs pipe
[Re: Posco]
#6538920
05/16/19 10:01 PM
05/16/19 10:01 PM
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Duckstick80
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You must be using relatively short sections of flat stock so you can yank and fill the voids as you go. I figured just over a thirty yard pour based on a four inch floor. Yes I cut them into 10'3" they overlap in the wider slot of the yoke. It's a 45 yard pour, I don't pour 4" I shoot for 4.5" so I don't have thin spots and the garage will be 5"+ I'm pouring the edge 10" thick and about 12-16" wide with extra rebar in it. I should add I do pour 4" but on small slabs that are easy to gauge the thickness.
Last edited by Duckstick80; 05/16/19 10:04 PM.
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Re: Flat metal concrete screed support vs pipe
[Re: Duckstick80]
#6538932
05/16/19 10:12 PM
05/16/19 10:12 PM
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Posco
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You must be using relatively short sections of flat stock so you can yank and fill the voids as you go. I figured just over a thirty yard pour based on a four inch floor. Yes I cut them into 10'3" they overlap in the wider slot of the yoke. It's a 45 yard pour, I don't pour 4" I shoot for 4.5" so I don't have thin spots and the garage will be 5"+ I'm pouring the edge 10" thick and about 12-16" wide with extra rebar in it. I should add I do pour 4" but on small slabs that are easy to gauge the thickness. I can see where it's doable. So, it's a thirty foot diameter area. You'll cut that in half and swing a fifteen foot radius if I'm understanding it correctly.
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Re: Flat metal concrete screed support vs pipe
[Re: Duckstick80]
#6538977
05/16/19 11:32 PM
05/16/19 11:32 PM
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Duckstick80
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Posco I don't slope floors that way. I run my screed pipes from the floor drain to the outer forms and pour it in two pulls of the screed. The the entire floor is sloped this way.
On this pour Ill slope the first screed pipe 1" down 6' away from the drain and about 12' out both directions then run another screed pipe from the drain parallel to the first screed pipe and screed it with a smaller screed. After I get 14-15' past the drain, I'll use the flat 24' screed the rest of the way. I'll get a square spot in the floor that's sloped to the drain that matches the garage framing inside the building.
Last edited by Duckstick80; 05/16/19 11:33 PM.
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