4 min read · 12 July 2026

Specifying mechdecks: a mechanical consultant's spec-sheet template

The spec-sheet skeleton we've watched senior mechanical consultants copy-paste into tender packs for five years running.

A mechdeck specification lives in the mechanical services tender pack. This is the skeleton — copy it, delete the sections that don't apply, add project-specific values.

1. Scope

Supply, fabricate, deliver and install rooftop mechanical platform(s) as shown on the drawings. Includes structural deck, screens, guardrails, access, and all fixings.

2. Materials

Structural: Zincalume-coated steel to AS 1397. Non-structural framing and screens: aluminium extrusion. Fixings: substrate-matched (metal deck screws / concrete anchors).

3. Compliance

All guardrails to AS/NZS 1657. Live load to project structural spec. Wind loading to AS/NZS 1170.2.

4. Deliverables

Shop drawings, BOQ, cut list, load path verification, handover pack.

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