---
job_no: 2627
job_name: Airey Park — Homebush West
authored_by: lfcs-pricing
session_id: 80b1f893-d887-4130-b96f-dd48d5450edd
phase: phase-3-worker
date: 2026-05-08
basis: STR25020 rev D + P171342-SP-001-0 rev 0; intake-locked envelope 2026-05-08T08:33:58Z
---

# 2627 — Bid Prep

## §1 Snapshot

| Field | Value |
|---|---|
| Job no. | 2627 |
| Job name | Airey Park — Homebush West |
| Site | Lot 1 DP 126151, Fraser Street, Homebush West NSW 2140 |
| End client | Geoscape (per pavement spec) / Strathfield Council park |
| Designer (structural) | Capital Engineering Consultants — Parramatta |
| Designer (pavement) | Stellen Consulting — Manly |
| Architect | NDZ Architects |
| Drawing rev | STR25020 rev D — Issued for Review 27.11.2025 (pre-IFC) |
| Pavement spec rev | P171342-SP-001-0 rev 0 — Issued for tender 11.07.2025 |
| HC | TBD — RFQ not yet supplied |
| Programme | TBD |
| BoQ format requested | both — lump-sum letter + BoQ-response (defensive) |
| Pricing posture | defensible-for-variations |
| LFCS scope | formwork S+I+strip · steel fix only · concrete place+finish only · curing |

## §2 Scope intake — locked (per envelope)

| Item | Value | Source |
|---|---|---|
| Site exposure | inland | postcode 2140; orchestrator §13.1 95% conf |
| Labour rate | $95/hr blended (8×$85 + 2×$105 + 1×$120 ÷ 10) | LFCS Rate Card V1.7 |
| Margin + contingency — labour | direct × 1.15 cont × 1.15 margin = 1.3225 loaded | Rocky-confirmed pre-IFC posture 2026-05-08 |
| Margin + contingency — materials | direct × 1.15 margin × 1.15 cont = 1.3225 loaded | orchestrator parallel uplift; **flagged for sanity-check re-confirmation** |
| Adverse weather | exclude as variation at day-labour | per Standard Exclusion item 7 + 49 |
| LAFHA | OUT | Sydney crew on Sydney site; Botany→Homebush West ~25 min |
| Concrete grade | 32 MPa (drawings); 35 MPa (pavement spec — pathway base) | conflict — see §4 RFI |
| Programme assumed | Mon–Fri 7:00–15:30, ~4–6 weeks | until HC confirms |

## §3 Drawing + spec extract summary

Drawing index = 7 sheets STR25020 rev D + Stellen Consulting pavement spec P171342-SP-001-0 rev 0 (15 sections).

LFCS-relevant elements identified:
- **Footings** — SF1 (450 × 500) perimeter + side returns; SF2 (300 × 500) internal gridline; stepped SF1 lifts under seating terrace (3 lifts visible)
- **Drop edge beam** — DEB1 1200 max deep × 300 thick along top edge between gridlines 1-2
- **Internal slab** — 150mm SL82 T&B, 32 MPa (function room footprint provisional 13×13m = 169 m²)
- **Pathway slab** — 125mm SL82 top, 32 OR 35 MPa (RFI), perimeter strip (provisional ~120 m²)
- **Seating terrace** — 150mm slabs over stepped SF1 strip footings + sandstone retaining wall (NOT LFCS)
- **Joints** — sawn ≤4m, keyed ≤10m, expansion ≤20m, isolation 10mm polyethylene
- **Existing-structure interfaces** — tooth slab + tooth stair into existing slab/brick wall, drill+epoxy N12-400 dowels, local removal of existing wall to accommodate concrete riser
- **Curing** — polythene + hessian per spec §10; 7-day cure per spec §10.1.1
- **Posts + roof** — steel beams + posts + timber rafters per S300 — **NOT LFCS**

## §4 Flag list — Rocky-attention items

### F1 — Concrete grade conflict (HIGH PRIORITY)

Drawings rev D S100/S200 concrete quality table → **32 MPa** for pad footings + strip footings + slab on ground + DEB1.

Pavement spec P171342-SP-001-0 Table 1 → **35 MPa compressive + 4.5 MPa flexural** for pavement element "Base" (the 125mm pathway slab is a pavement-classified element).

Conflict: which strength applies to 125mm pathway slab?
- If structural drawing precedence → 32 MPa
- If pavement spec precedence (typical for pavement-classified elements) → 35 MPa flexural-rated

**Pricing impact:** flexural-rated 35 MPa is ~$15–$20/m³ premium over 32 MPa structural mix. At 15 m³ pathway concrete, the supply premium is ~$300 (HC pays — not LFCS). LFCS placing labour unaffected by grade. **No first-pass labour adjustment required**, but RFI mandatory for HC concrete-supply line item.

**Recommended action:** RFI to designer for clarification before submission. Default assumption in first-pass: pavement spec prevails for 125mm pathway → 35 MPa; structural drawing prevails for 150mm internal slab + footings + DEB1 → 32 MPa. Built into envelope as 32 MPa locked but pathway flagged.

### F2 — Pavement spec template carry-over

Pavement spec P171342-SP-001-0 §1 Introduction explicitly references "the joint reinforced concrete pavement base for the pedestrian footpaths at **St Ives Showgrounds proposed carpark development**." This is a different project. Designer Stellen Consulting reused the spec template without updating §1 to Strathfield Parks Airey Park.

**Confidence in spec applicability:** material clauses (§4 materials, §6 formwork, §8 reo, §9 placing/finishing, §10 curing, §11 joints, §13 adverse weather, §14 testing, §15 tolerances) are generic concrete-pavement clauses applicable to any in-situ concrete pavement. §1 introduction is template fluff. Substance applies to this job.

**Recommended action:** RFI to designer to confirm spec applies to 2627 as intended. Note in submission cover letter that spec §1 references different project but bid relies on substantive clauses. No pricing adjustment.

### F3 — Architectural setout RFI (BLOCKER for final submission)

Drawings note 9 (S100 + S200) explicitly says "REFER TO ARCHITECTURAL DRAWINGS FOR ALL SETOUT, LEVELS, FALLS ETC." Architectural plans NOT supplied in inbound set. Quantity take-off in BoQ-from-drawings is **provisional ±20–30%** until architectural setout received.

**Pricing impact:** any total derived from this take-off is provisional. First-pass is a sanity-check magnitude estimate; final submission requires architectural plan or formal HC-supplied BoQ for confirmed quantities. Submission must carry standard exclusion + assumption that quantities are subject to confirmation.

**Recommended action:** Before commercial submission, escalate via Rocky to HC: "Architectural setout drawings + dimensioned plan required to confirm quantities. Quoted quantities ±20–30% subject to receipt." Add as Detailed Exclusion 53 in revision-2 exclusions list.

### F4 — Piering note

S100 + S200 carry note: "PIERING MAY BE REQUIRED. ENGINEER TO CONFIRM DURING CONSTRUCTION."

Piering is NOT LFCS scope (specialist sub per Standard Exclusion 30). If piering confirmed, scope expansion via variation. First-pass excludes; variation rate basis = same loaded basis × 1.3225.

### F5 — Existing-slab interface productivity

Tooth slab + tooth stair into existing slab/brick wall + drill+epoxy dowels + local wall removal coordination = ~15–20% productivity reduction vs greenfield. Built into BoQ rates. Add as Assumption A10 in revision-2 exclusions list.

### F6 — DEB1 deep-edge-beam productivity

1200mm max deep × 300mm thick × 13 lin m DEB1 with multi-layer reo cage is deeper than typical edge beam. ~30% productivity reduction built into formwork + reo + place rate.

### F7 — Saw-cut window 24-hour productivity risk

S200 SJ detail + spec §11.3.6 require sawn control joints within 24 hrs of pour. Late-afternoon pour + early sunset + summer humidity = potential after-hours saw-cut. Cancellation premium per Rate Card V1.7. Build into rate; flag for posture grill Q-D2.

### F8 — Materials contingency uplift (Rocky review at sanity-check)

Envelope locks materials at 1.15 margin × 1.15 contingency = 1.3225 (uplifted from default 1.15 × 1.10 = 1.265). Orchestrator applied uplift to mirror the labour-side pre-IFC contingency. **Flagged for Rocky review at sanity-check** — Rocky may revert materials to standard 1.265 if pre-IFC posture only justifies labour uplift.

### F9 — Curing duration

Exclusions skeleton A7 says 14-day cure. Pavement spec §10.1.1 says minimum 7 days. Reduce A7 to 7-day cure in revision-2 exclusions list. Cure labour cost reflects 7-day cycle, not 14.

### F10 — Cylinder testing + flexural beam testing

Pavement spec §14 requires cylinder testing 2 pairs per sublot + flexural beam test per sublot. NATA lab cost via HC per envelope item 28. LFCS makes cylinders + delivers + makes beams. Build into placing rate (~10 min per sublot × ~3 sublots = 30 min total — negligible).

### F11 — Density coring (75–100mm Ø) within 2 days

Pavement spec §14.2.5 requires NATA-take cores from finished slab to verify density. Destructive test; core repair cost via HC, not LFCS. Add as Detailed Exclusion 54 in revision-2 exclusions list.

## §5 Cross-references between envelope + drawings

| Envelope claim | Drawing/spec confirmation | Status |
|---|---|---|
| Concrete grade locked 32 MPa all elements | S100 + S200 concrete quality table → 32 MPa for pad/strip/slab on ground + DEB1 | **Confirmed for structural elements; 125mm pathway 35 MPa per pavement spec — flag F1** |
| Drawings rev D pre-IFC | S000–S300 all stamped "ISSUED FOR REVIEW" rev D — confirmed pre-IFC | Confirmed |
| Site exposure inland | Postcode 2140 + no salt/marine context in drawings | Confirmed |
| LAFHA OUT | Sydney crew + Sydney metro site | Confirmed |
| 4 LFCS items only | Drawings + spec scope match: formwork + reo place + concrete place+finish + curing | Confirmed |
| HC supplies concrete + reo + plant | Drawings + spec assume contractor-supplied materials but envelope-supply-split is contractual norm | Confirmed (subject to RFQ confirmation) |

## §6 Sections for downstream skills (per spec)

### §6.1 ADDED (over Standard)

(none — first-pass take-off applies Standard Exclusions 1–10 + Preliminaries 11–28 verbatim)

### §6.2 Cross-refs

- Standard LFCS Exclusions Library v1 (orchestrator-supplied)
- 2629 Erskine Park canonical three-tier exclusions structure
- LFCS Rate Card V1.7 day/night/weekend tiers (§Cancellation premium 8 hrs minimum)
- Common Misses Pattern: existing-structure-interface productivity (built into rate)

### §6.3 Rate Only

(no Rate-Only items in this scope — all LFCS items are quantified)

### §6.4 OPTION

- **Optional A:** Piering (if confirmed by engineer per S100/S200 note) — separate variation; Rate Only on m run installed pier × pier dia per specialist sub quote.
- **Optional B:** Cancellation premium (8 hrs min per Rate Card V1.7) — noted, not first-pass priced.

### §6.5 Cranage

LFCS does not provide cranage per envelope item 19. Concrete pump + telehandler + crane (if required) all by HC. No LFCS cranage line item.

## §7 Sanity-check magnitudes (pre-grill)

Provisional first-pass labour magnitude ~320 manhours → ~$30,400 direct → ~$40,200 loaded.
Provisional first-pass materials ~$6,000 direct → ~$7,935 loaded.
**Provisional total ~$48,140 ex GST (loaded, defensible-for-variations posture).**

Subject to:
- Architectural-setout RFI confirming quantities (±20–30% range)
- Phase 0 grill answers Q-A1/A2/A3/B1/D1/D2/E/F/G
- Sanity-check session with Rocky/Liam adjustments

## §8 Read order for Phase 4 sanity-check

1. This file
2. Drawing-Index-2627.md
3. boq-from-drawings-2627.md
4. Pre-Pricing-Grill-2026-05-08.md (output of next step)
5. 2627-First-Pass-Priced-TakeOff-2026-05-08.md (output of step 5)
6. _Internal/exclusions/exclusions-2627.md (revision 2)