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
View all documents from this publisher

https://www.astm.org/
Email: service@astm.org

ASTM C270-25 Standard specification for mortar for unit masonry

Publication Year

2025

Document Status

Withdrawn

Abstract

Specifies mortars for use in the construction of non-reinforced and reinforced unit masonry structures.

Document History

Superseded by ASTM C270-25a. Supersedes ASTM C270-19ae1.

Publisher Information

American Society for Testing and Materials

ASTM International offers global access to standards development for over 140 participating countries.