The National Master Specification (NMS) is the most comprehensive master specification in Canada serving as an easy-to-use framework for writing construction project specifications. To maintain their relevance, NRC publishes a series of updates on a quarterly basis. The following represents the latest set of updates.
NMS summary of updates 2017-04
The 2017–04 NMS update features updates to several material categories such as concrete and steel as well as updates to sections on transportation and disposal of hazardous materials and regulatory requirements. In addition to updates on selective demolition, this publication introduces new sections related to selective demolition for electrical, plumbing and HVAC.
NMS summary of updates 2017-01
The 2017–01 NMS includes a new section that focuses on removal and salvage of construction materials and forming a preliminary component to other selective demolition activities. It also covers updated sections related to deconstruction of structures, removal of construction materials, removal of underground storage tanks, conservation treatment of period masonry and stone, as well as sections for cast-in-place concrete, wood treatment and rough carpentry. As a significant enhancement to the data set, descriptions are now provided for each NMS section. The descriptions will help users find appropriate sections, and will be searchable on NRC’s website, and within some of the third party software tools.
NMS summary of updates 2016-10
The 2016–10 NMS Update focuses on changes to sections related to conservation treatment of period construction, with four new sections on topics such as copper sheet roofing and period doors and windows. The domestic water piping section was expanded to include Crosslinked Polyethylene (PEX) tubing. The section on wastewater utility storage tanks now includes fibreglass reinforced polyester polyethylene and polyvinyl chloride in addition to precast concrete septic tanks.
NMS summary of updates 2016-07
The 2016–07 NMS Update focuses on changes to sections in Divisions 26 and 34. Revisions were based on Aerodrome Standards and Recommended Practices TP312 5th edition. New airfield lighting systems and LED lighting systems were introduced and the obstruction light sections were updated.
Input for these updates was received from a range of stakeholders including manufacturers, the Canadian Airport Electrical Association, Public Services and Procurement Canada, Transport Canada and the Department of National Defence.
NMS summary of updates 2016-01
A series of corrections were made as part a of a general quality assurance review. Thousands of punctuation and spelling changes were made to improve consistency and ensure Canadian spelling throughout, for example 'colour' rather than 'color', 'fibre' rather than 'fiber'.
Enhancements were also made to align with SectionFormat™, such as listing standards under a heading of Reference standards. For consistency in tab levels, Abbreviations, Definitions and Referemce standards were all promoted to top-level article titles. Other changes were made to reflect specification writing language such as changing the requirement to submit (rather than provide) engineer sealed drawings.
There are over one hundred references to Codes Canada 2015 throughout. Each was reviewed and updated to the 2015 editions. There are a few exceptions related to seismic design that require additional review before updating code references are updated.
A few sections were renumbered or re-titled to align with MasterFormat® and a more extensive adjustment will be released on the next NMS publication.
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