Other tools NBS offers a range of tools for specification and collaboration National BIM Library The most trusted BIM Library in the UK, certified to the internationally-recognised NBS BIM Object Standard Uniclass 2015 A dynamic and unified classification system for the construction industry covering all sectors Construction Information Service (CIS) A comprehensive online collection of construction related standards, regulations, technical advice and articles Plug-ins NBS provides a range of tools to help connect your CAD model to your specification model
Platform Resources Support Events About TheNBS.com Manufacturers Uniclass 2015 Get in touch

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Platform

NBS Chorus Features and pricing Book a demonstration Sign in to NBS Chorus Other tools National BIM Library Uniclass 2015 Construction Information Service (CIS) Plug-ins

Resources

Knowledge Sample Specification Case studies Authors

Support

Training Downloads and updates

About

About NBS Newsroom

Report 211.1R-91 Standard practice for selecting proportions for normal, heavyweight, and mass concrete

Publication Year

1991

Document Status

Withdrawn

Abstract

Specifies methods for selecting proportions for hydraulic cement concrete made with and without other cementitious materials and chemical admixtures.

Document History

Superseded by ACI PRC-211.1-22. Reapproved 2009.

Publisher Information

American Concrete Institute

Founded in 1904, the American Concrete Institute supports the development, dissemination, and adoption of its consensus-based standards, technical resources, certification and training in concrete design, construction and materials.

CCI Headquarters
38800 Country Club Drive
Farmington Hills
ACI
USA

Website: www.concrete.org
Email: BKStore@concrete.org
Tel: +1 248 848-3700