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saw cut joint in raft slab

  • Is it necessary to provide construction joints for a raft .

    Is it necessary to provide construction joints for a raft .

    Jun 09, 2017 · Depends on type and dimensions of your slab. I´m assuming raft slab is a slab on the ground for buildings. Usually joints are provided each 30 meters, or when needed for pratical purposes. For example, if you don´t have available a good equipment or a adequated crew at the field, joints could be provided taking in account the work´s schedule.

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  • Contraction Joints in Elevated Slabs - ASCC

    Contraction Joints in Elevated Slabs - ASCC

    cracks. Saw cutting an elevated slab, however, doesn't create the same weakened plane that it does in a slab-on-ground. The reinforcing steel and steel deck, either composite or noncompos-ite, provide more restraint than the subgrade for a slab-on-ground. Therefore, cracks typically occur between the joints cut in the elevated slab.

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  • Joints in Concrete Slabs on a Grade — What, why, & how .

    Joints in Concrete Slabs on a Grade — What, why, & how .

    Early-entry dry-cut joints are generally run 1 to 4 hours after completion of finishing, depending on the concrete's setting characteristics. These joints are typically not as deep as those obtained by the conventional saw-cut process, but should be a minimum of 1 inch [25 mm] in depth.

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  • CCANZ - Joints

    CCANZ - Joints

    In order to ensure that shrinkage cracking occurs at a contraction joint, a plane of weakness must be created by forming (using crack-inducing tapes or formers) or cutting a groove to a depth of at least one-quarter of the slab thickness. However, if the cut can be formed early enough, by a suitable grooving tool or early-age saw cutting, some .

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  • CIP 6 - Joints in Concrete Slabs on Grade

    CIP 6 - Joints in Concrete Slabs on Grade

    a. The maximum joint spacing should be 24 to 36 times the thickness of the slab. For example, in a 4-inch [100 mm] thick slab the joint spacing should be about Saw cut Tooled Wall or Column Expansion joint material Slab on grade Column Contraction joints intersect at diagonals of the square Form openings which will be filled after floor has .

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  • FREE TO ALL BUILDERS BUILDER'S MATE - BRANZ

    FREE TO ALL BUILDERS BUILDER'S MATE - BRANZ

    FREE TO ALL BUILDERS Inside: Win! A floor slab is restrained by the ground on which it . shrinkage control joints, the slab edge and/or a free joint. • Free joint (concrete slab free joint from . is saw cut to at least one half of the thickness of the floor (making sure the saw cut is deep enough so .

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  • 7 Pavement Joints

    7 Pavement Joints

    pavement and the initial saw cut is made for the joint. Timing is critical when making this saw cut on contraction joints. If sawed too soon, the joint spalls and ravels. If sawed too late, the pavement may have already cracked randomly. For this reason, the sawing of joints often starts within

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  • 3 Ways to Cut Concrete - wikiHow

    3 Ways to Cut Concrete - wikiHow

    Mar 29, 2019 · To cut concrete with a 15-amp circular saw, start by using chalk to mark cut lines on the surface of the slab. Next, set the saw's blade depth to 2 inches and attach a 7 inch diamond blade using vice grips so that the teeth point in the opposite direction of movement.

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  • Slab Saws / Flat Saws / Street Saws - cessco

    Slab Saws / Flat Saws / Street Saws - cessco

    Slab Saw Cut up to 7-5/8" deep . Please Click Here. FS524 Gas Self Propelled Flat Saw Cut up to 9-3/4" deep . Please Click Here. CC2500 Gas Self Propelled . Joint Cutting Saws. CC1000 Joint Cutting Push Saw Starting at: 2,279.95. click Here for Specifications. CC1100 Joint Cutting Push Saw .

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  • Joints in Concrete Slabs on a Grade — What, why, & how .

    Joints in Concrete Slabs on a Grade — What, why, & how .

    Early-entry dry-cut joints are generally run 1 to 4 hours after completion of finishing, depending on the concrete's setting characteristics. These joints are typically not as deep as those obtained by the conventional saw-cut process, but should be a minimum of 1 inch [25 mm] in depth.

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  • Guide to Cutting Relief Joints in Concrete - Bartell Global

    Guide to Cutting Relief Joints in Concrete - Bartell Global

    Nov 02, 2016 · Guide to Cutting Relief Joints in Concrete. . In our experience up-cut saws can disturb the aggregate as the blade goes through the slab resulting in raveling. A down-cut saw will be able to solve this and create cleaner edges. This really comes down to a preference decision. A wet or early entry saw will both produce similar cuts, but there .

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  • Firth Rib-Raft Slab Design Kennedy Park Reception Building .

    Firth Rib-Raft Slab Design Kennedy Park Reception Building .

    Firth Rib-Raft Slab Design Kennedy Park Reception Building Development. DATE SCALE FILE SHEET No of for 17/12/2015 Dougan Larkworthy Team Architects 08 S.01 Firth Rib Raft Slab Design - Kennedy Park Reception Building Development 1566-S 2,870 4,115 2,565 3,025 10,550 2,870 4,115 2,565 3,025 10,550 . Indicates saw-cut to slab, (saw-cuts to be .

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  • Slab Saws / Flat Saws / Street Saws - cessco

    Slab Saws / Flat Saws / Street Saws - cessco

    Slab Saw Cut up to 7-5/8" deep . Please Click Here. FS524 Gas Self Propelled Flat Saw Cut up to 9-3/4" deep . Please Click Here. CC2500 Gas Self Propelled . Joint Cutting Saws. CC1000 Joint Cutting Push Saw Starting at: 2,279.95. click Here for Specifications. CC1100 Joint Cutting Push Saw .

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  • Proper Concrete Jointing

    Proper Concrete Jointing

    Contraction Joints: Joints that permit horizontal movement of the slab and induce controlled cracking at preselected locations (see diagram 2). These joints are typically created by grooving the concrete while it is still in the plastic state or cutting the concrete in its hardened state once it has obtained sufficient strength (typically

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  • SEALING OF SAW CUT JOINTS IN CONCRETE SLABS

    SEALING OF SAW CUT JOINTS IN CONCRETE SLABS

    SEALING OF SAW CUT JOINTS IN CONCRETE SLABS Schematic sketch VAPORTIGHT COAT-SG2 or SG3 Polyurethane Sealant Backer Rod 2-part Concrete Concrete Joint width VAPORTIGHT COAT-SG2 or SG3 Crack Concrete Concrete S a w c u Joint depth t SEALING OF EXPANSION JOINTS IN CONCRETE SLABS Schematic sketch Coat slab surface with VAPORTIGHT COAT-SG2 or SG3 .

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  • Placing Control Joints in Concrete - The Concrete Network

    Placing Control Joints in Concrete - The Concrete Network

    A 4" slab should have joints 8-12 feet apart. Cut joints deep enough. Cut joints 25% of the depth of the slab. A 4" thick slab should have joints 1" deep. How to cut joints. Grooving tools cut joints in fresh concrete. Saw cutting cuts joints as soon as the concrete is hard enough that the edges abutting the cut don't chip from the saw blade.

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  • Firth Rib-Raft Slab Design Kennedy Park Reception Building .

    Firth Rib-Raft Slab Design Kennedy Park Reception Building .

    Firth Rib-Raft Slab Design Kennedy Park Reception Building Development. DATE SCALE FILE SHEET No of for 17/12/2015 Dougan Larkworthy Team Architects 08 S.01 Firth Rib Raft Slab Design - Kennedy Park Reception Building Development 1566-S 2,870 4,115 2,565 3,025 10,550 2,870 4,115 2,565 3,025 10,550 . Indicates saw-cut to slab, (saw-cuts to be .

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  • Joints in Concrete Construction - Ardiansyah Kusuma Negara

    Joints in Concrete Construction - Ardiansyah Kusuma Negara

    Joints in Concrete Construction 17-5 17.3.2 Tooled Joints These contraction joints are tooled into the concrete surface during the finishing operations. A groove is formed to cause a weakened plane, which controls the location of the developing crack. Grooving tools .

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  • control & saw cut joints in concrete slabs - Revit Forum

    control & saw cut joints in concrete slabs - Revit Forum

    Jul 14, 2011 · control & saw cut joints in concrete slabs . You could also use this same workflow without cuting the slab, with simply a model line built into the family which will still allow you to schedule the length . I'm buying into line based families for Saw Cut Joints. How about construction joints .

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  • Contraction Joints in Concrete Slabs - The Concrete Network

    Contraction Joints in Concrete Slabs - The Concrete Network

    Contraction joints are formed by saw cutting, by tooling a joint with a grooving tool, or by inserting a plastic strip into the concrete during finishing (zip-strip). Proper timing and depth of cut are essential. If you wait too long, the slab will crack where it wants to rather than where you want it to.

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  • Guide to Cutting Relief Joints in Concrete - Bartell Global

    Guide to Cutting Relief Joints in Concrete - Bartell Global

    Nov 02, 2016 · Guide to Cutting Relief Joints in Concrete. . In our experience up-cut saws can disturb the aggregate as the blade goes through the slab resulting in raveling. A down-cut saw will be able to solve this and create cleaner edges. This really comes down to a preference decision. A wet or early entry saw will both produce similar cuts, but there .

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  • SOFF-CUT EARLY ENTRY SAWING - Concrete Pavements

    SOFF-CUT EARLY ENTRY SAWING - Concrete Pavements

    Soff-Cut sawn joints are shallower thus providing . Where concrete was first poured is the area where you should start to cut Do not put saw onto slab until you think it is ready to cut – unnecessary marks in concrete should be avoided . Husqvarna Soff-Cut Systems

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  • Joints in Concrete Slabs | JLC Online | Concrete, Concrete .

    Joints in Concrete Slabs | JLC Online | Concrete, Concrete .

    These joints can also be cut into a slab with a circular saw equipped with a concrete-cutting blade. Saw-cut joints should be made four to 12 hours after finishing. Another option is to insert hardboard or plastic joint strips into the surface of a slab when the concrete is still wet. Contraction joints should be one-fourth the depth of the .

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  • Where to Place Joints in Curved Concrete | Concrete Decor

    Where to Place Joints in Curved Concrete | Concrete Decor

    Dec 08, 2006 · But saw-cut joints, defined by the American Concrete Institute as those cut at less than full depth with special equipment in hardened concrete, are generally approached differently on curves than on straight lines. With the minimum recommended depth of one fourth of the thickness of the concrete, getting the saw to turn can be very tough.

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  • Preventing Random Cracks In Concrete | Specify Concrete

    Preventing Random Cracks In Concrete | Specify Concrete

    If using a saw to cut the joints, the cuts should be made as soon as the concrete can withstand the sawing without raveling the edges of the saw cut. Understand that the longer you wait to cut the joints, the greater the potential for cracking. If a crack develops before the concrete is sawed, the sawed joint will be ineffective.

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  • Concrete Control Joints – Proper Spacing, Depth and Timing .

    Concrete Control Joints – Proper Spacing, Depth and Timing .

    Concrete Control Joints – Proper Spacing, Depth and Timing Explained by Concrete Tool Reviews One thing that I was taught in my years as a concrete finisher is that there are two things in life that are certain, the first is of course death and the second is concrete is going to crack.

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  • Placing Joints in Concrete Flatwork- Why, How, and When

    Placing Joints in Concrete Flatwork- Why, How, and When

    Early-entry saws are available which may allow cutting to begin within a few hours after placement. Contraction/control joints must be established to a depth of ¼ the slab thickness (Figure 2). Proper joint spacing and depth are essential to effective control of random cracking. Figure 2: Minimum Depth of Contraction Joints .

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  • Making Expansion Joints in Concrete Slabs | DoItYourself

    Making Expansion Joints in Concrete Slabs | DoItYourself

    Step 3 - Other Types of Expansion Joints. Other types of expansion joints function in the same way, but take on a different form. A saw joint is made by sawing to a maximum depth equal to ¼ the thickness of the slab with a concrete saw. The width of the cut should be no greater than 1/8-inch.

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  • Soff-Cut® saws and blades for green concrete joints .

    Soff-Cut® saws and blades for green concrete joints .

    Husqvarna Soff-Cut® is a system developed for Ultra Early Entry TM sawing of contraction joints after pouring concrete slabs. It's the optimal solution for minimizing the risk of random cracking, which is one of the most costly and aggravating problems faced by a concrete contractor.

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  • When to Saw Control Joints| Concrete Construction Magazine .

    When to Saw Control Joints| Concrete Construction Magazine .

    Continue to saw at regular time intervals until the cut edges show only minimal raveling. When this happens, the slab is ready for sawcutting. Sometimes concrete cracks before the saw can cut the joint without causing raveling. In these cases, consider using a lightweight saw that allows you to cut within a few hours after final concrete finishing.

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