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The Agreed Rules of Measurement (ARM) is a set of guidelines for standardizing the measurement and presentation of building work in bills of quantities or pricing documents. The purpose of ARM is to ensure that such documents are clear and reflect good practices, facilitate understanding of the work included, and facilitate efficient pricing, tender assessment, and post-contract administration of construction projects. ARM was developed in 1994 by a joint committee of the Society of Chartered Surveyors (SCSI) and the Construction Industry Federation (CIF), with input from the Department of Finance, as an alternative to the Principles of Measurement (International) for Works of Construction (POMI).

ARM has undergone revisions over the years to keep up with changes in construction methodology and to address industry requests for amendments. ARM 4, the current edition, was published in 2009, and ARM 4 Supplement 1, Issue 2, which provides guidelines for use with the Public Works Conditions of Contract, was published in 2016. ARM 4 Supplement 2, published in 2013, provides an alternative set of rules for the measurement of mechanical and electrical installations.


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