Plant and Truck Certifications
Plant Certification Check List -
10th Revision (pdf) - this Check List is in effect as of January 1,
Inspection Reporting Spreadsheet.xls
for Plant Certification (pdf)
a Certified Plant (beta)
an NRMCA Approved Engineer List of
Engineers that have given NRMCA permission to list their contact information on
Qualification Requirements for Inspectors and Assistants
2009 Plant & Truck Fee
NRMCA charges the following fees to process plant
and truck certifications:
Plant Certification Fee (every 2
NRMCA member - $100.00 per plant
Non-member - $450.00 per plant
Truck Certification Fee (every 14
(14-month allows for some grace period on
an intended annual truck inspection)
NRMCA member - $15.00 each vehicle
Non-member - $35.00 each vehicle
The turnaround time for processing a correctly
completed Plant Certification Check List is two weeks and can sometimes extend
to four weeks. Requests for certification are processed on a
Requests to expedite processing can be
accommodated for an additional fee of $75.00
per plant. The turnaround time for expedited service is 3 working business
days from the date NRMCA receives the overnight package. If you would like
to request expedited service, you must call NRMCA
587-1400 to notify us of
your request, then send the request via overnight services. Note: All
expedited services will be sent out by 2-day. If overnight delivery is required,
an additional charge will be applied.
These fees are for NRMCA to provide and process
the plant or truck certification request. The fee must accompany the
completed checklist when it is returned to NRMCA. If the plant or truck
certification paperwork is sent in without payment then processing will be
delayed until payment has been received. NRMCA accepts the following for
payments: credit card (American Express, MasterCard or Visa) or checks (made
payable to NRMCA).
Mail Plant and/or truck certification paperwork to:
National Ready Mixed Concrete Association
Engineering Division – Plant Certification
900 Spring Street
Silver Spring, MD 20910
Concrete is a manufactured product, the quality and
uniformity of which depends on the control over its manufacture. It must be
produced with suitable ingredients accurately combined to specific proportions.
These must be thoroughly blended and the finished product delivered according to
the requirements of the purchaser. Although success depends upon several
factors, a vital prerequisite is the availability of proper, well-maintained
equipment and an efficient production facility.
NRMCA certification of concrete production facilities
provides a system for establishing that production facilities of ready mixed
concrete plants are satisfactory. It reflects and, in many cases exceeds, the
requirements of standard specifications for ready mixed concrete, such as ASTM C
94 and AASHTO M 157 and the Concrete Plant Standards of the Concrete Plant
Manufacturers Bureau, CPMB 100. A certified plant is permitted to display a
Certificate of Conformance that assures the purchaser that the facility is
physically capable of furnishing good quality concrete.
Certification may be obtained by any producer of ready mixed
concrete with the procedures and limitations addressed in the Check List
document. Certification is issued only when the facility complies with all the
pertinent requirements in the Check List.
The following process is in place to ensure that the NRMCA
certification program maintains a high level of credibility and is of value to
the company’s customer:
certification task group comprised of members of the industry meets at least
twice a year to ensure that the requirements comply with current standards.
balloted and passed by the NRMCA Research, Engineering and Standards Committee.
Policies to the
program and revisions to the checklist are approved by the NRMCA Board of
facility is inspected by a NRMCA approved inspector who is knowledgeable on
concrete production facilities and of the requirements of this certification
The check list is
signed by a licensed professional engineer who stakes his professional
reputation that the inspection was objective and thorough and that the facility
met the requirements when it was inspected.
An official of
the company signs an agreement to maintain the equipment in compliance for the
duration of the certification.
reviews the completed check list to ensure that all the requirements have been
met prior to issuing a Certificate of Conformance.
Certificate of Conformance should include the signature and seal of the
inspecting engineer and be signed by the company’s principal executive.
Certification of production facilities is valid for two years
from the date of inspection. Certification of delivery vehicles is valid for 14
months from the date of inspection. NRMCA certifies 1,000 plants every year;
1,800 concrete plants hold valid certification currently. NRMCA also has about
20,000 trucks certified through its program. The certification is required (or
recognized) by several state highway agencies and engineering firms that write
specifications for a wide variety of construction projects. It is also
recognized in reference specification documents published by the American
Institute of Architects and the American Concrete Institute. Quality conscious
concrete producers use certification as an audit of their concrete production
facilities, even if specifications in that area do not need the certification.
In the early 1960’s numerous failures of concrete, were
hurting the reputation of concrete as a building material. A national joint
committee representing American Concrete Institute, American Institute of
Architects and the American Society of Civil Engineers was established to
outline in detail the specific responsibilities of all the principals in
Even before this initiative, the formulation of a plant
certification system by the NRMCA had began. NRMCA’s initiative was intended to
establish a fair and equitable system, and to set forth the quality standard of
the physical facilities used to produce concrete.
The NRMCA Checklist for Ready Mixed Concrete Production
Facilities was approved at the 1965 Annual meeting of the NRMCA Board of
Directors. The program was put into operation in 1966, initially for members
only, but then extended to non-members of NRMCA to facilitate adoption of the
program by specifying agencies. NRMCA’s Plant Certification Program has evolved
over the years and has seen greater acceptance by concrete producers and
Sections Addressed in the Check List
· Material Storage
and Handling, including cement, aggregates, water and admixtures
Equipment including scales, weigh batchers, volumetric batching devices for
water, dispensers for liquid admixtures, accuracy of plant batching, batching
systems, and recorders
Ticketing System (which is required to qualify for Certification)
including truck mixers, agitators, non-agitating units and a summary of fleet
condition in which over 90% must be acceptable to qualify for certification.
Certification of Production Facilities
Obtain three copies of the current version of the NRMCA Plant
Certification Check list (QC Manual Section 3) from the NRMCA’s Publication
Department or download it from the NRMCA Web site for each plant requiring
Engage a licensed professional engineer to conduct or direct
the inspection and attest to the plant’s conformance with the check list
requirements. The licensed engineer conducting the inspection and executing the
check list may be an employee of the company owning the plant. It should be
noted in this connection that inspecting engineers, in signing the certificate,
stake their professional reputation on the evaluation having been objective and
thorough. A policy approved by the NRMCA Board of Directors in 2004 requires
that the inspecting engineer have a current license from the licensing authority
in the state or jurisdiction where the plant is located. The licensed engineer
can use an assistant under his employ to perform the inspection provided the
final request is signed off by him/her. The assistant has to have been through
the NRMCA qualification process.
NRMCA does not establish fees charged by the engineer for the
inspection. A list of NRMCA approved engineers who have previously inspected
plants in various states is available. The inspecting engineer (or an assistant
under their employ) conducts the inspection and completes the Check list. Items
that do not comply should be rectified and an acceptable indication noted on the
An official of the ready mixed concrete company signs the
agreement to regularly verify accuracy of scales, volumetric batching devices,
dispensers and, if used, devices for automated aggregate moisture measurement
attesting that the equipment will be maintained within the requirements of the
Check list. The company official pledges to maintain the accuracy of the scales
and the batching accuracy of all-volumetric admixture dispensers and water
batching devices and will promptly correct any deficiencies for the duration of
Submit one completed original copy of the Check List to
NRMCA. The submitted copy should be signed and sealed by the engineer and the
company official. NRMCA reserves the right to accept electronic copies of
completed check lists when the identity of the submitting entity can be
verified. The two additional copies are for the inspecting engineer and the
Upon confirming that the plant meets the Check list
requirements, a Certificate of Conformance is issued to the plant. (Please note
- the certificate is sent to the inspecting engineer who should sign and seal
it. The company official should also sign the certificate.)
It takes two weeks and can sometimes extend to four weeks to
process a request and issue a certificate. Requests to expedite processing can
be accommodated for an additional fee.
Certification of Delivery Vehicles
The new revision requires inspection and certification of
delivery vehicles on an annual basis. NRMCA will issue Delivery Fleet
Certification card for each vehicle meeting the requirements. This has evolved
due to requests from producers and specifies. The process, described in Section
5 of the Check list, provides two options:
Option A – In-house inspection of delivery fleet and review of records and
procedures by the inspecting engineer. The company official bears the
responsibility for supervision of the inspection of the delivery fleet.
Option B – Inspection of delivery fleet by the inspecting engineer.
For both options the period of certification for the delivery
vehicle is nominally one year (14 months from the date of inspection). Plant
certification remains on a two-year cycle. A request for NRMCA certification
cards is required even if the state DOT inspects and approves delivery vehicles
or if the company uses rental units.
The following points are to be noted for Option A (more
details are in Section 5 of the Check list):
maintenance personnel who will be conducting the vehicle inspection for the
required items in the Check list.
Ensure that they
are familiar with the requirements of the vehicle inspection. A company manager
should periodically supervise the inspection.
Maintain on file
a statement of qualifications of these personnel and have these available for
the inspecting engineer when the plant is inspected.
Make a request
for a Delivery Fleet certification card using the Fleet Inspection Reporting
Spreadsheet. (The person inspecting the vehicle and the company official should
complete this request.)
NRMCA will issue
a card with a unique vehicle ID and an expiration date. The card shall be
applied to the driver side windshield or door of the delivery unit (some
companies do not permit items on the vehicle’s windshield).
Maintain a record
of inspection and certification on file (Section 5.7) for review by the
When the engineer
inspects the plants, he or she will interview the maintenance personnel who
performed the vehicle inspection and audit their inspection, as well as your
records of certification.
certification requires that more than 90% of trucks operating from the plant
have a current certification.
For Option B, the inspecting engineer inspects all the
delivery vehicles, completes the required information in Section 5.7 and makes
the request for certification cards. These vehicles must be inspected annually.
Contacts at NRMCA: (301) 587-1400:
For technical or policy questions, please contact
Colin Lobo, senior vice president of engineering, ext. 1160.
For certification status or other non-technical questions,
please contact Engineering & Operations Coordinator
Karen Bean, ext. 1168.