Best Concrete Slump For Footing

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.

Best concrete slump for footing.

After half of the form is filled consolidate the concrete with a piece of rebar or a shovel to eliminate voids and air pockets. One of the most important factors before ordering ready mix concrete is knowing the required compressive strength. Seems like a very tight mix for a 1st floor residential footing and slab. Generally if it s flat guys go for a 6 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. 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. High strength concrete mixes offer exceptional durability and long lasting performance.

I work this area all the time and ive never read that requirement from any of the dozen or so architects ive worked with. You really can t say which slump is safe to use unless you have the design. This characteristic is measured in terms of slump the higher slump values the more manageable and greater mobility will be obtained. You can have it designed for 4000 psi at a 7 slump if you want.

I don t know the exact specs for a c 4 mix. Step 6 add the concrete mix to the form. Find nearby slab and foundation contractors to help with your footings. Footings are especially important in areas with troublesome soils.

We normally use on call concrete with 4000psi mix. We offer five different types of concrete slump ranging from dryer mixes 30 50 slump and wetter mixes 90 120 slump. It depends on the ground it s sitting on too was the dirt compacted good. The best way is to order low slump concrete which is concrete with a low proportion of water.

Im reading these plans that specify a 2 4 slump on all concrete. Between 3 500 to 5 000 psi on suspended slabs beams and girders. 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. 2 4 slump required on residential slab and footing.

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. Typically reinforced concrete ranging between 3 500 to 4 000 psi is used on footing and slabs on grade. 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.

Wetter mixes are more commonly used for trench filled foundations where a high flow is required whereas dryer mixes.