NRMCA Updates Guide to Specifications

NRMCA has updated its Guide to Improving Specifications for Ready Mixed Concrete. This publication has been developed through the Research Engineering and Standards (RES) Committee and has evolved based on comments developed when reviewing project specifications used in the concrete construction industry. This publication is intended as a guide for ready mixed concrete or contractor personnel who are responsible for compliance with project specifications or for design professionals who develop project specifications.

This document proposes specification clauses and includes accompanying commentary as guidance. The commentary essentially emphasizes the fundamental concepts of specifications for ready mixed concrete addressed in industry standards published by ACI or ASTM International. Provisions of ACI 318-19, Building Code Requirements for Structural Concrete, as it relates to concrete ingredient materials and mixtures, production and delivery are incorporated in this document. Requirements in this document are consistent with those addressed in ACI 301-20, Specification for Concrete Construction.

This publication uses the most recent version of the AIA MasterSpec format, Section 033000 for cast-in-place concrete, to provide context to the typical sections seen in project specifications of private design firms or owners. The document only covers those sections pertinent to concrete materials and mixtures. The intent of writing this publication in this format is to provide advisory information to designers, contractors, concrete producers and other stakeholders on a project to discuss the intent or for the designers to incorporate these suggestions.

Click here to download the publication. For more information, contact Colin Lobo at clobo@nrmca.org.