Best Concrete Slump For Footing

I don t know the exact specs for a c 4 mix.

Best concrete slump for footing.

This property determines the mobility and slump of the concrete mix. The concrete mix workability is the property that determines the mix capacity to be placed and consolidate properly allowing to finish a product without segregation. 2 4 slump required on residential slab and footing. High strength concrete mixes offer exceptional durability and long lasting performance.

Seems like a very tight mix for a 1st floor residential footing and slab. Be sure to choose a high strength concrete mix like sakrete 5000 plus high strength concrete mix or sakrete concrete countertop mix for your concrete countertop project to ensure it will remain strong and durable over time. After half of the form is filled consolidate the concrete with a piece of rebar or a shovel to eliminate voids and air pockets. The construction of footings is best left to the pros that can assess the soil conditions and decide on the proper depth and width for the footings as well as the proper placement.

Approx 50 70 slump are used mainly in simple strip footings and for hard standing slabs. And walls and columns normally require between 3 000 to 5 000 psi. It is best to use the uncut end of the tube for the top of the footing. Im reading these plans that specify a 2 4 slump on all concrete.

Step 7 continue to add concrete until the form is overfilled slightly. The best way is to order low slump concrete which is concrete with a low proportion of water. Find nearby slab and foundation contractors to help with your footings. It depends on the ground it s sitting on too was the dirt compacted good.

We offer five different types of concrete slump ranging from dryer mixes 30 50 slump and wetter mixes 90 120 slump. The contractor who plans to build the foundation walls for our house makes a practice of using concrete with a slump of 6 1 inch. Do you have the design for the concrete mix. Step 6 add the concrete mix to the form.

Generally if it s flat guys go for a 6 slump. By john carroll issue 277 aug sept 2018 i ve done a bit of concrete flatwork stairs stair landings for decks some slabs and so forth but now i have a client asking for a concrete walkway in front of his house and one section of it say. You really can t say which slump is safe to use unless you have the design. Wetter mixes are more commonly used for trench filled foundations where a high flow is required whereas dryer mixes.

Footings are especially important in areas with troublesome soils. I work this area all the time and ive never read that requirement from any of the dozen or so architects ive worked with. One of the most important factors before ordering ready mix concrete is knowing the required compressive strength. This characteristic is measured in terms of slump the higher slump values the more manageable and greater mobility will be obtained.

We normally use on call concrete with 4000psi mix.