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| 04/01/2006 6:51 AM |
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What is the best method to get and keep the wire mesh/tubing in the center of the 4" concrete slab, some say dont chair pull up the mesh/tubing as you go, others say chair it but it gets walked down.
Ant tips on reducing crackes in the slab, fiber additives, saw cutting etc. Going to lay tile, open concept 3000 sq ft of tile.
Tks
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| 04/01/2006 8:56 AM |
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RU sure you want it in the centre of the slab? It is the bottom of the slab that typically fails (cracks upward ) because concete there is in tension. Take your "design" to a professional-- 3000 sq ft pour with no cracking is a tough expectation. Especially true with tile on top
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| 04/01/2006 9:16 AM |
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3000 sq ft. hummm, I would consider 'weakened plane' joints, (at a minimum. and you could plan a flexable tile grout joint above the joint inthe concrete. Today there are many colors and types of joint material. SIKA is one manufacture of many and makes a good product. Nobody likes cracks in concrete. There is only one type of concrete that is said 'does not crack', that is an exotic that expands. I love ceremic tile and have alot of it here where I live. When I pulled up the carpet to install the tile, the floor, concrete, was shattered. Typical production residential. I used a 30# felt beneath the tile to provide a 'floating floor'. I have had to replace the grout in a few tiles in the last 5 years. Not the best solution, but an affordable one.
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| 04/01/2006 9:27 AM |
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Oh, another item, You asked about the placement of the mesh and tubing. while its true, compression and in-tension in the slab, I have found it best, and recommended by design teams here in the earthquake state, CA. to place the mesh midway. This is to basicaly keep the concrete from heaving when it does crack. (thus avoiding a step in the concrete). Also it allows for saw cutting control joints. knowing that your mesh is at a set depth, (theory). The only way is to provide a SET or controled height on your mesh. Chairs, dobies. Your substraight should be solid enough to withstand the weight of a person walking on them. Which brings up the subject of styrafoam beneath the slab. do have the styrafoam? There are those that say not to lift the wire into the concrete. While they may think that idea is good, I do not. The mesh is of NO VALUE at the bottom of the concrete. If it is constructed that way, save some money and leave the mesh at the material yard. Coverage is required for reinforcment to develop it's anticipated strenght....sl no, i did not spell check this[:D]
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| 04/01/2006 6:47 PM |
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I was not recommending mesh left at the bottom of the concrete. I agree if it is too deep & not integral with the concrete it is useless
I think for 3000 sq ft you had better get prof opinion. I have no experience with flexible tile grout -- sounds iffy. I went with laminate floor .
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| 04/02/2006 6:11 AM |
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I think I will go with a membrane Ditra, yes there is strofoam underneath that makes chairing more difficult
Tks
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| 04/02/2006 11:37 AM |
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Interesting product, below is an excerpt for m one of the websites FAQ. The manufacture recommends that
"Large surfaces are to be divided into smaller fields in accordance with applicable standards".
They do take creditcards[:o)]
You must be building in a cold/wet climate?
which ICF are you looking at?
As far as flexible joints in tile, These are spaced aprox. every 10-12 feet. It's not every joint. These can been seen on commercial applications. Like at McDonalds, look at the exterior tile.
I understand some of the principals about the styrifoam beneath the slab. When we build commercial freezers we use it. We sandwich it between concrete, like a SIP wall.
I tend to think outside of the box, i guess that is why we/I cinsider ICF in the first place. Soil has great insuating properties. Now, the weight of the concrete atop the styrifoam dosen't make sense to me, (with the stryifoam supporting the weight).
Will the faom someday deteriorate and collapse? could one use soil, encapsulated with a vapor barrier below it. I need some direction and other feedback here. I never intended to hyjack your thread. But, while you guys and I are not on the same page....we are in the same book. looking forward to your thoughts......sl
Schluter-DITRA is cut above existing expansion joints. If Schluter-DITRA is used as a waterproof membrane, Schluter-KERDI-FLEX is adhered over the joints. According to the applicable standards, movement joints are to be carried over to the tile coverings. Large surfaces are to be divided into smaller fields in accordance with applicable standards. We recommend the Schluter-DILEX profile series. Depending on the expected movement, appropriate movement profiles such as Schluter-DILEX-BT or Schluter-DILEX-KSBT are to be incorporated above structural joints.
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Davee
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Posts:25
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| 04/02/2006 7:20 PM |
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I used Legalett system -http://www.legalett.ca --including stone covered with 4" styrofoam . Special chairs supported on styrofoam , mesh & rod reinforcing. The styrofoam does not break up ! They use 8" concrete or 5 with smaller pipe system. This approach has been used for over 25 years in Sweden & no long term failure of styrofoam
My ICF choice after a lot of looking was IntergraSpec -- http://www.integraspec.com/frame.html I was very happy with both
The comment that soil has good insulating properties is IMHO a bit extreme. Dry soil is better but in winter conditons how can it be very dry |
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| 04/03/2006 10:45 AM |
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Davee, thanks for the links to legalett. I have added it to my favorites. I will start a new topic. (since I have already Hyjacked this one), sorry. Davee, I will start it with you...sl
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