The ARM 5 is a new document presented in A3 landscape tabular PDF format and it includes a revised referencing system to facilitate computerised BQ production, BIM and other applications. ARM 5 will supersede ARM 4 and the two ARM 4 Supplements currently in use.
GCCC have advised that project appointments commencing at stage 1 on or after January 1st 2025 will be obligated to prepare tender documents based on ARM 5 for stage 3 of those projects. For all other non-public building projects the SCSI/CIF will advise in due course an agreed implementation date and advise the amendments as appropriate to the Code of Practice for Selective Tendering.
Some of the main changes to the Work Sections in comparison with ARM 4 are:
- 01 General Rules. The introduction of Rules for Contractor Designed Development Works and changes to a number of the other Rules.
- 02 Preliminaries. Now in tabular format incorporating ARM 4 Rules with amendments and additions.
- 04 Excavation and Earthworks. The Ground and Archaeological Investigations content replaces the ARM 4 Ground Investigation Rules, Rules are included for dealing with noxious weeds, Rules for the measurement of earthwork support are re-introduced, changes are adopted to the working space Rules and Sub-Sections included for Crib Walls, Gabions and Reinforced Earth and Diaphragm Walling .
- 05 Piling: Piles and Piling: Piling Ancillaries. Rules have been revised.
- 11 Structural Steelwork. Rules for the measurement of architectural steelwork and for all fittings on steelwork to be measured separately.
- 13 Facade Systems and Curtain Walling. This is a new Work Section.
- 14 Mechanical Installation. Completely revised.
- 15 Electrical Installation. Completely revised.
- 16 Movement Systems. A new Work Section.
- 17 Builders Work in Connection with Mechanical and Electrical Installation and Movement Systems. A new Work Section.
- 18 Firestopping. A new Work Section.
- 20 Glazing. Revised.
- 25 Off Site Fabrication – Prefabricated Buildings, Pods and Modular System Building Elements. A new Work Section.
- 26 Tests and Samples. A new Work Section.
This list is a summary of the more significant amendments adopted in ARM 5 but the document incorporates extensive changes to the Rules of ARM 4 throughout its Work Sections.