Question about Northwest Smith Cooper 3/4" Hose End Vacuum Breaker

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Breakers support Which type will be best for breaking concrete?

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For hand held breakers best one i have used id Hilti TE905, they have a thing it which reduced the vibration on the user. Got the job done easier thn last time when using a Makita, hired it locally.

Posted on Mar 21, 2009

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When breaking Concrete, the breaker is expected to penetrate the material, allowing it to crack and shake loose from the reinforcing steel. High frequency breakers tend to provide better performance in this application as it is not the energy per blow, but the fast blow rate that destroys the concrete's structural integrity. We recommend on concrete walls, footings, and floors to use a 750 - 1,500-ft. lb. breaker. With larger projects, consisting of large footings greater then 4 cu. yards, use a 2,000 - 5,000-ft. lb. breaker. The high production demand of bridge and building demolition requires a 7,500 - 10,000-ft. lb. breaker.

Posted on Aug 27, 2008

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3 Answers

How many cubic meters of concrete will it take to pour a garage fool 336 sq feet 6 inches deep


Figure 1 90 lb. bag per square ft., 6" deep.
Don't forget sand to grade and rebar to reinforce.
You probably won't find enough guys to mix all that concrete, so you'd really be better off hiring a concrete truck.
Tip: It's best to over estimate a little so you won't be caught short.

Mar 01, 2015 | Building Materials

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Concrete tile or Clay tile


clay tiles have little more lifespan than that of concrete. While clay tile is only popular in its red color, concrete tiles are available in wide range of colors.
Clay tiles break easily but concretes do not. But both concrete and clay tiles are the pinnacles of beauty.

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How can I clean stains in concrete?


It depends what the stain is. Concrete is porous and like clothing, some stains are permanently set. Detergents remove oils. Surfectants take it a step further. Acid removes scale. Cat litter can soak up standing oil. Once clean to satisfaction, seal the concrete to help prevent future staining.

Jul 22, 2013 | Building Materials

1 Answer

Does I matter what type of ground I put my tent on?


Most of the tents can be installed on all types of surfaces including grass, decks, concrete, etc. for example if you locate your tent on a concrete surface you will need to secure you tent with heavy affixes in most cases water barrels so you'll need to have a nearby water source, the affixes varies from each different surface so you should look into what's the best option for your surface.

Jul 31, 2012 | Camping, Backpacking & Hiking

1 Answer

How can I repair cracks in a concrete porch?


If this is on top or below (soffitt) If the cracks are movement or shrinkage when poured you can cut with Diamond grinder in a V type and then patch with a epoxy and sand fillers.If they are bigger you can use a repair motar .Your local hardware should have these in basic form.

Aug 27, 2010 | Poured Concrete

1 Answer

How do i install a dive stand for a diving board can i use red head concrete bolts to mount it to the deck


im not sure what red head concrete bolts are but typically you drill a hole just smaller than the bolt into the concrete with a concrete drill bit then screw in the bolts. make sure to not over tighten or make the hole too big you could break off the head.

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1 Answer

Breakers Troubleshootinf


When breaking oversize material the breaker is expected to break the material down the middle into two pieces. This is optimum production. If the operator has to re-position the breaker towards the edge of the rock and gradually downsize the material, production rate slows down. To assess what size of breaker will effectively handle this application, the size and hardness of the material must be known. If a 4 cu. yard piece of hard rock (20,000 psi or greater) needs to be broken in half you will require a 7,500-ft. lb. or larger breaker. If a 2 cu .yd. piece of limestone (20,000 psi or less) needs to be broken in half you will require a 3,000 - 5,000-ft. lb. breaker.

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Breakers Question


This is the most critical factor in choosing the breaker size. SMALL HYDRAULIC BREAKERS (HAMMERS): up to 1200-ft.lbs. (1627 Joules), are typically used in concrete and other light duty work. MEDIUM HYDRAULIC BREAKERS (HAMMERS): 1200 - 4000-ft.lbs. (1627 - 5423 Joules) are used in both concrete and rock applications with limitations on the size and amount of material to be broken. LARGE HYDRAULIC BREAKERS (HAMMERS): over 4000 ft. lbs. (5423 Joules), are typically used in rock and large scale concrete demolition projects.

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1 Answer

Breakers advice


When trenching, the breaker is expected to fracture a solid mass of rock into manageable pieces. The size of the material could be 100's of cu.yds, and the energy will be quickly absorbed. This is why it is recommended to work from a bench so the rock has somewhere to break out. We recommend when trenching in limestone or medium hard rock, to use a 3,000 - 5,000-ft. lb. breaker. When working in hard material we recommend a 7,500 - 10,000-ft.lb. breaker, and if high production is critical, a 13,500-ft.lb. breaker would be beneficial.

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