Before you order ready-mix concrete, make sure that you take the time to make sure you are ordering the right type. But this is not difficult to figure out when you consider exactly what you will use the concrete for and how much you will need. Since the ready mix concrete is made at a plant rather than on-site, it must be ready when it arrives.
First, you will need to make sure you order concrete that has the right compressive strength. The compressive strength for concrete is measured in thousands of PSI. Concrete typically ranges from 2,500 PSI to 5,000 PSI. For concrete used for walls and footings, you may only need 2,500 PSI, while pavements and suspended beams will require a much higher PSI.
You will also need to order the right coarse aggregate. When assessing the coarse aggregate, you must follow the American Concrete Institute Standard. The aggregate must not be greater than a fifth of the inside form dimension, and it must not be three quarters of the spacing in-between the rebars.
Determine the exact number of cubic yards you will need. Fortunately, this isn't difficult to determine because there are many calculators available that will help you determine the exact amount you need. This is determined by measuring the width and length of the area where you will apply the concrete and then imputing the desired thickness of the concrete. You will always want to make the concrete somewhat thicker than necessary.
Make sure you order the right slump. This is the consistency the concrete will be at as it is being placed. The slump will be a specific number. You will need a maximum of 3 for pavements and heavy mass concrete, 4 for footings, 5 for reinforced foundation walls and 6 for slabs and beams.
Consulting with a Professional
When you order the ready mix concrete, a representative will usually come to your home to discuss the nature of your project. You will need to clarify whether the ready mix truck will be able to enter your property to pour the concrete, whether you are receiving enough concrete to complete the job and whether you may need more than one truck to apply the concrete efficiently. Sending a representative is a good sign from the concrete company because many customers do not order the right type, so by being visited by a representative, you'll know that you are in good hands.