---
job_no: 2627
job_name: Airey Park — Homebush West
phase: phase-3-worker-grill
authored_by: lfcs-pricing
session_id: 80b1f893-d887-4130-b96f-dd48d5450edd
date: 2026-05-08
basis: STR25020 rev D + P171342-SP-001-0 rev 0; intake-locked envelope 2026-05-08T08:33:58Z
status: WORKER-DRAFT — answers default-resolved or evidence-derived; Rocky to sign off at Phase 4 sanity-check
skipped_per_orchestrator: [Q-A0, Q-A4, Q-A5, Q-A6, Q-A7]
---

# 2627 — Phase 0 Pre-Pricing Grill

## Skipped questions (intake-locked by orchestrator envelope)

| Q | Topic | Locked answer | Source |
|---|---|---|---|
| Q-A0 | Cost basis | $95/hr blended labour; HC supplies concrete + reo + plant; LFCS supplies plastic spacers + polythene + hessian + formwork ply/timbers/props | standing-context §1.1–§1.3 |
| Q-A4 | LFCS scope items | 4 standard: formwork S+I+strip; steel fix only; concrete place+finish only; curing | standing-context §1.1 |
| Q-A5 | Site exposure | inland (postcode 2140; A1 cover schedule confirms non-marine) | standing-context §1.2 + drawings S51 cover schedule |
| Q-A6 | Adverse weather | exclude as variation at day-labour rates | standing-context §1.5 default |
| Q-A7 | LAFHA | OUT (Sydney crew, Sydney metro site ~25 min off Botany) | standing-context §1.6 + §13.1 |

---

## Q-A1 — Supply boundary: concrete (HC vs LFCS?)

**Answer:** HC supplies all concrete (32 MPa structural, 35 MPa flexural-rated for pavement element if RFI confirms — see Bid Prep F1). LFCS prices **placing labour only** including: pump direction, vibrator operation (LFCS-supplied vibrator; pump itself by HC per std exclusion 19), float-screed-trowel-broom finishing per pavement spec §9, sample cylinder + flexural-beam preparation + delivery to NATA lab per pavement spec §14.

**Evidence:** Standing-context supply split locked. STR25020 silent on supply (typical HC-supply contract). Pavement spec §9 "Min place rate 20 m³/hr + plant/crew capable" — describes contractor placing performance, not supply chain.

**Confidence:** 95% — standard locked rule. RFI to HC at RFQ stage to confirm contract clause if HC wishes to deviate.

**Pricing impact:** placing rate per m³ basis (LFCS-rate-card pavement productivity 160 m²/day). No supply mark-up applies.

---

## Q-A2 — Supply boundary: reinforcement (HC vs LFCS?)

**Answer:** HC supplies all reo — Grade 500N N12/N16 bars + SL82 mesh + tie wire + cage delivery + cast-in items (anchor bolts, dowels, drainage pipes, conduits, sleeves). LFCS fixes only + supplies plastic spacers (no metal chairs — galvanic corrosion risk per pavement spec §8.2 prohibition of wood/aggregate/brick chairs; metal chairs allowed but plastic preferred at A1 cover).

**Evidence:** Standing-context §1.2 supply split. Pavement spec §8.2 "Reinforcement shall be supported on chairs, spacers or stools manufactured from metal, concrete or plastic." Std exclusion 21 confirms HC reo supply.

**Confidence:** 95%.

**Pricing impact:** steel fix labour rate per kg installed (~50 kg/manhour direct fix incl. spacers + tie wire). Plastic spacer material LFCS-supplied at small materials line (~$0.50/spacer × ~600 spacers = ~$300 direct).

---

## Q-A3 — Supply boundary: formwork ply + timbers + props (LFCS vs HC?)

**Answer:** **LFCS-supplied** ply + timbers + props per standing-context §1.2 default. STR25020 silent on form supply. No TCE-supplied indication on drawings. Formwork material cost included in LFCS rate.

**Evidence:** Standing-context default applies until RFQ contradicts. Pavement spec §6.1 "steel or seasoned-dressed timber planks with metal angle/channel along top edge" — describes form quality, not supply chain.

**Confidence:** 90% — minor risk that HC supplies form props for DEB1 deep beam (1200mm requires heavy props/walings beyond standard rate-card).

**Pricing impact:** form materials at ~$25/m² form face (ply + timbers + props amortised per typical 4-use cycle). At ~140 m² form face = ~$3,500 direct materials. DEB1 deep-beam props: extra heavy-duty props (~$500 incremental) within rate.

**Flag for Rocky:** confirm LFCS-supplied DEB1 props at sanity-check; if HC supplies, deduct ~$500 from materials.

---

## Q-B1 — Site access + working hours

**Answer:** Sydney metro public park site. Working hours assumed **Mon–Fri 7:00 am – 3:30 pm** per Liam's standard (per assumptions log row A2). Public-park context may impose additional restrictions: no Saturday/Sunday work without council approval; no night work; possible noise restrictions during park-user hours. RFQ silent — TBD by HC.

**Evidence:** Site = Lot 1 DP 126151 Fraser Street, Homebush West NSW 2140 (Strathfield Council park). Standard council park sites in Sydney inner-west typically 7am–6pm Mon-Fri + Saturdays 8am–1pm with noise limits.

**Confidence:** 80% — Saturday work risk unconfirmed.

**Pricing impact:** rates priced at Mon-Fri day basis. Saturday/night/weekend = LFCS Rate Card V1.7 cancellation premium / loading.

**Flag for Rocky:** RFI to HC for confirmed working hours + Saturday-allowed/disallowed before submission.

---

## Q-C — QA / testing requirements

**Answer:** Per pavement spec §14:
- Cylinder testing: 2 pairs cylinders per sublot (1 pair 7-day + 1 pair 28-day) per AS1012.7. **LFCS makes + delivers; NATA lab cost via HC** per std exclusion 28.
- Flexural beam testing: 1 beam per sublot per AS1012.1 + RMS T304 + AS1012.8 cure. **LFCS makes + delivers beam; NATA lab via HC.**
- Density coring: 75–100 mm Ø within 2 days per spec §14.2.5. **NATA-take cores; HC pays repair cost** (destructive test). Add as **Detailed Exclusion 54**.
- Slump tests + dockets: every truck per AS1379. By HC concrete-supplier at point of placement; LFCS verifies.

**Evidence:** Pavement spec P171342-SP-001-0 §14 verbatim.

**Confidence:** 95%.

**Pricing impact:** sample preparation labour ~10 min per sublot × ~3 sublots = ~30 min total = ~$50 direct. Negligible. Built into placing rate.

**Flag:** Flexural beam testing rare for park pavement (more common heavy-vehicle pavement). Confirm with designer that flexural retention required for pedestrian loads. Possible scope reduction if flexural waived.

---

## Q-D1 — Programme: pour staging + duration

**Answer:** Programme TBD per RFQ silence. Worker assumes:
- **Footings phase** — week 1 (SF1 + SF2 + pad footings; sequenced after earthworks sub completes excavation + sub-base + 50 mm blinding). Single pour or 2 staged pours depending on access.
- **DEB1 + slab edge phase** — week 2 (vapour barrier + reo + DEB1 + 150 mm slab edge form).
- **150 mm internal slab phase** — week 3 (single ~169 m² pour or staged 2× ~85 m² to fit 4-m sawn-control-joint grid + 24-hr saw-cut window).
- **125 mm pathway slab phase** — week 4 (staged pours per 4-m SJ grid; ~120 m² total in 2–3 pours).
- **Seating terrace phase** — week 5 (stepped SF1 lifts + 150 mm terrace deck).
- **Curing phase** — overlapping; 7-day cure per pavement spec §10.1.1 minimum (NOT 14 — corrected from exclusions skeleton A7).
- **Joint sawing + sealing** — week 5–6.

Total duration estimate **4–6 weeks** continuous Mon-Fri × 5 working days = ~20–30 working days.

**Evidence:** Standard LFCS productivity (160 m²/day pavement; ~10 m³/day deep beam place; ~20 m³/day footings place).

**Confidence:** 60% — programme is the highest-confidence-floor unknown. RFQ-stage confirmation mandatory.

**Pricing impact:** rates priced at continuous-run productivity. Broken programme = standing time at variation rate.

**Flag for Rocky:** RFI HC for confirmed programme. If broken/staged programme, rate-card adjustment per std exclusion 7.

---

## Q-D2 — Saw-cut joint timing risk

**Answer:** Pavement spec §11.3.6 + S200 SJ detail require sawn control joints **within 24 hours of pour**. Late-afternoon pour (typical day-shift end) means saw-cut window may extend into early evening or next-morning early shift. Summer humidity + high temperatures shorten the cutting window further.

**Risk:** off-hours saw-cut required = LFCS Rate Card V1.7 cancellation/loading premium (8-hr minimum charge).

**Mitigation built into rate:** all pours scheduled to allow saw-cut completion within standard working day where feasible. Late-afternoon pours avoided unless pour-volume + crew-size constrains. If unavoidable, off-hours saw-cut billed as variation.

**Evidence:** Pavement spec §11.3.6 + drawings S200 SJ note.

**Confidence:** 90%.

**Pricing impact:** **negligible** in first-pass; flagged as variation risk if HC programme imposes late-afternoon pours.

**Flag for Rocky:** confirm saw-cut posture at sanity-check. Default = build into rate, off-hours = variation. Rocky may want explicit saw-cut-after-hours line item carved into rate.

---

## Q-E — Productivity adjustments

**Answer:** Three significant productivity reductions vs greenfield rate-card baseline:

1. **DEB1 deep-edge-beam** (1200 mm × 300 mm × 13 lin m) → **~30% productivity reduction** vs typical 300–400 deep edge beam:
   - Forms: heavy props + walings; slower set + strip
   - Reo: deeper cage with multiple bar layers (4F12 TM + N12-200 horiz + N12-300 horiz at base); slower fix
   - Place: pump-only feasible; tremie + vibrator at base
   - Strip: 24-hr min per pavement spec §6.5.1; 28-day OR 14-day-with-cylinder-test for prop removal per S000 concrete note 9
2. **Existing-slab interface** (tooth slab + tooth stair into existing slab/brick wall + drill+epoxy N12-400 dowels + local wall removal coordination) → **~15–20% productivity reduction** vs greenfield slab.
3. **Stepped SF1 seating terrace** (3 lifts visible per S51) → **~10–15% productivity reduction** vs continuous strip footing (extra labour for stepping, lift-form + strip).

**Evidence:** drawings S200 (DEB1) + S201 (existing-slab tooth detail) + S51 (stepped SF1).

**Confidence:** 85% — productivity reductions estimated from common-misses-pattern history; first parallel calibration at sanity-check.

**Pricing impact:** built into per-line rate adjustments in first-pass take-off. Total productivity uplift across affected lines ≈ 18% incremental labour-hours over rate-card baseline.

**Flag for Rocky:** confirm 30/15-20/10-15% productivity reductions at sanity-check. May adjust if Rocky/Liam have stronger calibration data on these specific risk patterns.

---

## Q-F1 — Commercial posture

**Answer:** **Defensible-for-variations** per envelope locked default + standing-context §1.7. Tight + clean exclusions list. Pre-IFC posture justifies +5% labour cont uplift (locked at 15%) AND +5% materials cont uplift (locked at 15% — orchestrator parallel uplift, **flagged for Rocky review**).

Variation rate basis = same as submission rate basis × 1.3225 loaded.

**Evidence:** envelope intake-locked 2026-05-08T08:33:58Z. Drawings rev D pre-IFC justifies pre-IFC posture (per design-rev-cycle history A→D over 5 months).

**Confidence:** 95% — explicit Rocky directive on labour. 70% on materials parallel uplift (orchestrator-applied; awaits Rocky confirmation).

**Pricing impact:** loaded multipliers 1.3225 both labour + materials. ~6.5% magnitude uplift vs standard 1.265 multipliers.

**Flag for Rocky:** materials cont uplift to 15% is parallel-applied by orchestrator, NOT explicit Rocky directive. Rocky may revert materials to standard 1.265 (1.15 margin × 1.10 cont) if pre-IFC risk applies only to labour productivity (not materials volume). Magnitude impact ≈ $400 on ~$6,000 materials direct.

---

## Q-F4 — Submission format

**Answer:** **Both** lump-sum letter + BoQ-response format. Default per RFQ silence + standing-context §1.7.5 defensive default + Liam's prior-quote pattern.

**Evidence:** RFQ not yet supplied; HC name TBD; format request not specified. Defensive default = both formats pre-built; Rocky chooses at send.

**Confidence:** 60% — confidence floor on RFQ-silent format default. Worker pre-builds both; Rocky elects at submission.

**Pricing impact:** none — format choice is presentation, not price.

**Flag for Rocky:** confirm format at sanity-check or upon RFQ receipt.

---

## Q-G — Sanity checks

### Q-G1 — Concrete grade consistency check across drawings + spec

**Answer:** **Conflict identified — RFI required.** STR25020 S100/S200 concrete quality table → 32 MPa pad/strip/slab on ground/DEB1. Pavement spec P171342 Table 1 → 35 MPa compressive + 4.5 MPa flexural for "pavement Base" element.

**Resolution path:** RFI to designer to clarify which strength applies to 125 mm pathway slab. Pavement spec wins by precedence for pavement-classified element by typical convention.

**Pricing impact:** ~$300 supply premium (HC pays — not LFCS). LFCS placing labour unaffected by grade. **No first-pass labour adjustment.**

**Flag for Rocky:** RFI logged in Bid Prep F1; resolve before submission to HC concrete-supply line.

### Q-G2 — Pavement spec template carry-over

**Answer:** Pavement spec §1 references "St Ives Showgrounds proposed carpark development" — different project. Substantive clauses (§4–§15) generic concrete-pavement standards applicable to any in-situ pavement. Spec applies to 2627 by reference but §1 introduction is template fluff.

**Pricing impact:** none.

**Flag for Rocky:** RFI to designer for spec-applicability confirmation; note in submission cover letter that spec §1 references template-source project but bid relies on substantive clauses.

### Q-G3 — Drawing rev maturity contingency

**Answer:** Drawings rev D = "Issued for Review" pre-IFC. Rev cycle A→D over 5 months suggests 85–90% design completion. Standing-context §1.4 default 10% labour cont applies to full IFC; rev-D pre-IFC = +5% uplift (15% locked per envelope).

**Confidence:** 95% on design-maturity assessment; envelope-locked uplift confirmed by Rocky 2026-05-08.

### Q-G4 — Architectural setout RFI gating

**Answer:** **Critical RFI.** Drawings note 9 (S100 + S200) "REFER TO ARCHITECTURAL DRAWINGS FOR ALL SETOUT, LEVELS, FALLS ETC." Architectural plans NOT supplied. Quantities **provisional ±20–30%** until received.

**Pricing impact:** any first-pass total is provisional sanity-check magnitude. Final submission requires architectural plan or formal HC-supplied BoQ for confirmed quantities.

**Flag for Rocky:** before commercial submission, escalate via Rocky to HC: "Architectural setout drawings required to confirm quantities. Quoted quantities ±20–30% subject to receipt." Add as **Detailed Exclusion 53** in revision-2.

### Q-G5 — Piering note

**Answer:** S100 + S200 carry note "PIERING MAY BE REQUIRED. ENGINEER TO CONFIRM DURING CONSTRUCTION." Piering NOT LFCS scope (specialist sub per std exclusion 30). If piering confirmed at construction, scope expansion via variation. Provisional NIL in first-pass.

### Q-G6 — Curing duration discrepancy

**Answer:** 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. Cure labour cost reflects 7-day cycle. Magnitude: ~50% labour reduction on cure-maintenance line vs 14-day assumption (~$200 saving on small cure-labour line; significant proportionally).

### Q-G7 — Shelter shop drawings (post footings)

**Answer:** S51 references "shelter shop drawings for post footings" — NOT in inbound set. Additional pad footings under shelter pavilion likely. Provisional NIL in first-pass; flag as RFI #5 for HC.

### Q-G8 — Stormwater drainage drawings

**Answer:** S200 references drainage drawings for pump well + sumps. NOT in inbound set. Sumps + waterstops NOT LFCS but trimmer bars + slab penetrations affect quantity. Provisional NIL; flag as RFI #6.

### Q-G9 — Geotech report S2348_GL_02_Rev0

**Answer:** Referenced but NOT in inbound set. Bearing capacity assumed 210 kPa stiff clay AS2870 H1 per drawings note 1. LFCS not responsible for verifying bearing (std exclusion 14). Geotech reading not required for first-pass take-off.

---

## Pricing Basis (post-grill)

**Locked basis:**
- Labour: $95/hr blended × 1.15 cont × 1.15 margin = **1.3225 loaded**, sequence cont→margin
- Materials: direct × 1.15 margin × 1.15 cont = **1.3225 loaded**, sequence margin→cont (parallel uplift, flagged Rocky review)
- Concrete grade: 32 MPa structural + RFI on 35 MPa pavement
- Cure period: 7 days (corrected from skeleton A7)
- LAFHA: OUT
- Adverse weather: exclude as variation
- Posture: defensible-for-variations
- Format: both lump-sum-letter + BoQ-response
- Working hours: Mon–Fri 7:00–15:30 (Saturday TBD)

**Productivity adjustments built into per-line rates:**
- DEB1 deep beam: +30% labour-hours
- Existing-slab interface: +15–20% labour-hours
- Stepped SF1 seating terrace: +10–15% labour-hours

**Open RFIs blocking submission (in order of magnitude):**
1. Architectural setout (HIGH — quantity confidence ±20–30%)
2. Concrete grade pavement vs structural (LOW $ impact — HC pays supply premium)
3. Pavement spec template carry-over (NIL $ impact — confirmation only)
4. Working hours (LOW — Saturday confirm)
5. Programme (MEDIUM — broken programme = variation)
6. Shelter shop drawings (LOW–MEDIUM — additional pad footings if confirmed)
7. Stormwater drainage drawings (LOW — slab penetrations + trimmers)
8. Piering (MEDIUM — scope expansion if confirmed)

---

## Sign-off

| Phase | Signer | Status | Date |
|---|---|---|---|
| Phase 0 grill complete (worker draft) | lfcs-pricing | Drafted | 2026-05-08 |
| Phase 4 sanity-check sign-off | Rocky | Pending | — |