---
job_no: 2627
job_name: Airey Park — Strathfield / Homebush West
created: 2026-05-08
authored_by: claude-code-orchestrator
---

# 2627 — Brief

## Site

Lot 1 in DP 126151 Fraser Street, Homebush West NSW 2140. Public park alterations + additions including a function room/groundskeeper/storeroom block, terrace, seating terrace and pathway slabs, all with concrete pavement landscape, sandstone block retaining wall and brick/block walls.

## Design package

- **Structural drawings:** Capital Engineering Consultants `STR25020` rev D, "Issued for Review", 27.11.2025. Sheets visible so far: S000 (general notes), S50 (part site plan), S51 (seating terrace), S100 (footing plan), S200 (ground floor slab plan). Worker to extract full drawing list during Phase 3.
- **Pavement spec:** Stellen Consulting `P171342-SP-001-0` rev 0, "Issued for tender", 11.07.2025, prepared for client Geoscape. Sections covering materials, equipment, formwork, reinforcement placing, placing/compacting/finishing, curing, joints, protection, adverse weather, testing, tolerances.
- **Architect:** NDZ Architects.

## Concrete grade

All elements per drawings rev D: 32 MPa, 80mm slump, 20mm max aggregate, Cement Type A.

## Reinforcement cover

| Element | Top | Bottom | Sides | Exposure |
|---|---|---|---|---|
| Strip footings | 50mm | 50mm | 50mm | B1 |
| Internal slab | 30mm | 30mm | 30mm | A1 |
| External slab (pathway) | 40mm | 40mm | 40mm | A1 |

## Site classification

AS2870 Class H1, bearing capacity 210 kPa on stiff clay (per geotech `S2348_GL_02_Rev0`).

## RFQ context

RFQ not yet supplied; HC name TBD per Rocky 2026-05-08. Approach: build BoQ from the whitelisted drawings + pavement spec, apply LFCS scope (formwork + reo place + concrete place-finish + curing), exclude all standard items per Standard LFCS Exclusions Library.

## Worker input whitelist

See per-job CLAUDE.md § "Worker input whitelist". Worker reads only the two listed PDFs from the inbound folder; does not enumerate or pattern-search the folder.

## Programme

TBD. Working hours assumed 7:00 am – 3:30 pm Mon–Fri until HC confirms.

## Risks

- Drawing rev D = "Issued for Review", not IFC. Design maturity may push contingency above default 10% per `standing-context.md` §1.4. Phase 1 intake locked 15% labour + 15% materials contingency for full pre-IFC posture.
- Existing slab + walls "to remain" with toothing details + isolation joints — interface coordination with existing structure is a productivity risk. Worker to flag if applicable.
- "Piering may be required. Engineer to confirm during construction" (S100, S200 notes) — pier scope is a contingency; not in LFCS first-pass unless drawings explicitly call up.