Frequently Asked Questions

Concrete is ordered by the cubic yard(yd3) Convert the dimension in inches to feet (4” ÷ 12” = 0.333’) Multiply the three dimensions together to find the number of cubic feet (0.333’ x 25' x 30’ = 249.75 cubic feet) Divide the cubic feet by the number of cubic feet in a cubic yard (27) to find the number of cubic yards (249.75 ÷ 27 = 9.25 cu. yd.) The industry standard is to allow 10% for variance in uneven subgrade, spillage, etc. and round up to the nearest ½ yard.
• The minimum concrete thickness for a driveway is 4” (0.333’)
• When traffic will include delivery vehicles, the minimum concrete thickness shall be 5” (.416’).
A driveway/sidewalk may be opened to traffic following 7 days of curing, or sooner, if testing confirms that a compressive strength of at least 2500psi has been reached. Concrete should continue to develop strength gradually over time (i.e. a typical driveway mix will minimally achieve 4000psi @28 days).
No, Placing and finishing the concrete is the contractor’s responsibility. We batch, mix, deliver and discharge a high-quality concrete product to meet the specifications of your project.
In addition to reapplying a sealer every 2-3 years:
1. Avoid rusting metals to set on the concrete.
2. Avoid wet leaves to remain on driveway for that they have a tendency to stain.
3. Maintain your driveway in the winter, especially the first winter when the concrete is more vulnerable. DO NOT apply deicing chemicals the first winter. Use sand as an alternative for traction.
a. After the first winter, always check your labels on de-icers. Never use products which contain magnesium chloride or calcium chloride.
b. Never use Fertilizer as a de-icer (ammonium sulfate, ammonium nitrate) which are known to aggressively attack concrete.
4. Do not allow water to drain and settle beneath the concrete slab as settlement cracks may develop.

More Cement Questions

It is highly recommended. Placing and finishing concrete may be beyond a DIY project. It is a highly technical responsibility that requires special tools, skills, knowledge and experience to ensure a successful completion of your job. Call our office today for a referral to qualified, fully licensed and insured concrete contractors in your area!
: Concrete sealers are chemical compounds that are applied to the concrete surface 30+ days following placement or sooner if it is a dual cure and seal compound. These products work by water proofing the concrete surface and preventing the penetration of water and harmful substances. Sealers are clear liquids that soak into the concrete and dry providing a protective coating to the surface. These are typically sprayed on or applied with a paint roller at a rate specified by the supplier/manufacturer. Sealers protect from high traffic/ weather/drainage/downspouts and are recommended to protect your investment. Regular maintenance is required to reapply these sealers every 2-3 years per manufacturer recommendations or when water no longer beads on the surface of the concrete.
Scaling is local flaking or peeling of a finished surface of hardened concrete as a result of exposure to freezing and thawing. Generally it starts as localized small patches which later may merge and extend to lightly or severly expose the coarse aggregate underneath. Occasionally concrete peels or scales in the abscense of freeze/thaw and often this is due to the early use of a steel trowel, over-finishing or finishing the concrete while bleed water is on the surface.
Follow these rules to prevent scailing:
1. For moderate to severe exposures, use air-entrained concrete of medium slump (3-5 in.) and cure properly.
2. Do not use deicers in the first winter.
3. Seal the surface with a commercial sealer
4. Use correct timing for all finishing operations and avoid use of steel trowels for exterior concrete slabs.
5. Specify air-entrained concrete. In cold weather, concrete temperature should be at least 50°F(10°C), contain an accelerating admixture, and be placed at a lower slump.
The concrete mixer trucks chute with the 2 extra extenders will reach approximately 16’ from the front bumper, 18’ from the front wheels.
• If your project site extends further off the road than that be prepared to arrange for wheelbarrows, a buggy or in some cases a pump-truck for placement.
• We are willing to pull the truck off road in some cases but be prepared to sign a property damage waiver provided by the truck driver.