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Parking Lot Design Assistance Program (DAP)

Design Assistance Application Form (PDF) | Parking Lot Sample Design Proposal (PDF)
Jointing Plan Sample (PDF)
Parking Lot Design Assistance Program Handout (PDF)



concrete parkingThe National Ready Mixed Concrete Association (NRMCA) provides concrete parking lot design recommendations intended for designers and specifiers not familiar with concrete parking lots. Specifiers may request these “DAP Recommendations” on their own behalf, or entities, including NRMCA members, may obtain them to pass along to specifiers. By providing detailed pavement design and CAD jointing recommendations, the Design Assistance Program helps deliver quality parking lot designs to ensure successful concrete projects.


Click the application form link above to submit a DAP request. Contact NRMCA’s Amanda Hult at or 720-648-0323 with any questions.

Who may submit a project for Design Services?

NRMCA members, state association affiliates, ready mixed producers, contractors, developers, engineers and architects may submit a project for assistance. Please note this service is offered only for parking lot projects in the U.S. (no household projects).

How much will the service cost?

NRMCA Members/State Affiliates: All projects free.

Concrete Contractors: All projects free where collaborating with an NRMCA producer member (click here or call 240-485-1146 to check producer membership status).

Specifiers including developers, engineers and architects: All projects free.


A commitment is required of all receiving free assistance to help NRMCA track project outcomes.


Fee Schedule for Non-NRMCA Members (not otherwise covered above):
Projects under 100,000 SF: $300
For projects over 100,000 SF: $700


How fast will I receive Design Suggestions?

plansTypical design assistance projects will be released within 5 to 7 business days. Very large or complex designs and those requiring detailed hydrological designs and calculations may take up to 10 business days to complete.


What will be included in the Design Suggestions?

NRMCA will provide its best recommendation for a concrete pavement jointing plan for the subject site, developed with consideration of constructability, long-term performance, economy, and aesthetics. For each application containing the necessary Project Information, NRMCA will provide the following Design Suggestions in return:



Scale CAD drawing with jointing plan and suggested typical design details including curbs, gutters, drains, contraction joints, isolation joints, construction joints, thickened edges, tied joints, doweled joints, etc.

Following the guidelines of the concrete pavement industry.

With alternatives for pervious pavement sections if applicable.


A detailed transmittal letter, which may include the following:

Recommended concrete pavement thicknesses to be determined by acceptable engineering practices for anticipated loading conditions, including ACI 330R Guide for Design and Construction of Concrete Parking Lots, NRMCA’s Concrete Pavement Analyst (CPA) software and other thickness design software programs offered by the American Concrete Pavement Association (ACPA) and the Portland Cement Association (PCA).

Potential sources of project specifications

Base Materials

Potential for LEED points

Subgrade and drainage, for pavements with and without detention

Hydrological illustration for pervious concrete projects


Disclaimer stating that the Design Suggestions are not every known fact about concrete pavement but complies with current industry standards. The final design is the responsibility of the engineer on record for the project.


What feedback will I be expected to provide?

The project submitting organization agrees to assist NRMCA to determine if the DAP service led to concrete parking lot construction or not, for whatever period of time is required to be reasonably certain of the outcome. In addition, NRMCA may contact the project design team to determine if the design suggestions were helpful in designing the concrete parking lot