Whether you’re building a residential project or an industrial one,
making mistakes early can lead to unsightly and costly damage to your slab.
That’s why you want a proper pour for your concrete slab, no matter how
big or small the project is.
How you approach the project will depend on
many factors, but here’s a general checklist of things to consider when you’re
pouring your slab.
subgrade. Completing this step improperly can not only damage your slab, but also
plumbing and other materials buried deep in the ground. In some instances, you
may also need to improve the subgrade via soil
the correct concrete mix and reinforcement for the slab. This means
understanding the exposure and traffic that the slab will need to sustain. This
will help you determine the proper water/cement ratio and the air entrainment
requirements (which change depending on the climate) to make sure that your
slab is going to perform as intended.
Plan for wire
reinforcements, control joints, and curing. What kind of support and wire
reinforcement will you use? Do you know how to properly place your control
joints and maintain adequate curing? Control joints spaced too far apart will
result in unwanted cracks in the slab. Curing your slab — which means
maintaining proper moisture and temperature — for seven days can result in a
slab that is 50 percent stronger than uncured concrete.
What compression strength will your
concrete have? Concrete strength is measured
in pounds per square inch (PSI). Standard concrete mixes range from 2,500 to
5,000 PSI, though custom mixes of over 10,000 PSI can be created for
specialized projects. At 2,500 PSI, you can lay driveways, floor slabs, and
walkways, but 3,000 PSI is
standard for a lot of construction uses. It can be laid wet and dries with a
nice finish and adequate strength. 3,500 PSI is good for curbs, beams, and floors where
heavy loads are moved regularly. 4,000 PSI is
for high-traffic areas or floor slabs in workshops and warehouses, where the
slab needs to withstand significant loads and wear. 5,000 PSI gives you an extremely durable
mixture which is largely limited to specialized projects where you can expect
extreme conditions and a need to withstand high-impact loads.
Determine cubic yards needed. Ready mix concrete is
generally sold in cubic yards. To help you determine how much you need, let’s
convert the measurement to feet. A cubic yard is 3’ x 3’ x 3’, or 27 cubic feet
of space that a cubic yard of concrete can fill. To figure the area you need to cover,
multiply the dimensions as done above, then divide by 27, and you’ll find out
how many cubic feet your project has. As an example, let’s use a slab that will
be 10’ x 20’ x .5’ (six inches). Multiply the measurements to get 100 cubic
feet. Divide that by 27, and you know you’ll need 3.7 cubic yards of concrete
to create your slab.
Getting a slab right is crucial. You want it poured and to not
have to deal with it again. You want to have enough concrete, have it laid out correctly,
and finished in a fashion that prevents future cracking and spalling whenever
Get in touch with Angelle and we can talk about your project
needs, whether it’s cement for soil stabilization work, slurry for dust
sensitive locations, aggregate, fill or concrete. We’re the only company in the
market with front discharge trucks, NRMCA-certified delivery professionals, and
plant locations across the greater Baton Rouge area, including Plaquemine and