---
job_number: 2626
client: Mack Civil
client_internal_ref: 2507 - Forest Rd Intersection
end_client: Transport for NSW (TfNSW)
designer: TfNSW (Standard Drawings R0220-01, R0220-03, R0220-04, R0220-28)
project_name: Forest Road and Boundary Road Intersection Upgrade
program: Easing Sydney Congestion
site: Forest Rd / Boundary Rd intersection, Peakhurst NSW (Georges River Council area)
chainage: Pit EXA01A/08
status: upcoming-bidding
type: dayworks                            # T+M per RFI 36 response from TfNSW SO
contract_price: TBC                       # filled after pricing
hourly_rates_inherit: lfcs-standards/rate-card.md
client_signatory:
  name: TBC                               # Huss to confirm Mack Civil contact
  role: TBC
  phone: TBC
  email: TBC
mack_civil_qm: Syed Jaowad (Quality Manager — RFI 36 author, signed 10-Feb-2026)
tfnsw_so: Zaki Mirza (TfNSW Project Support Engineer — RFI 36 response signed 13-Feb-2026)
specifications:
  - "TfNSW R11 Stormwater Drainage (Ed 5 Rev 8, project-specific Oct 2024)"
  - "TfNSW R53 Concrete for General Works (Ed 3 Rev 5, project-specific Oct 2024)"
standard_drawings:
  - "TfNSW R0220-01 (cast-in-situ pit base)"
  - "TfNSW R0220-03 (precast lintel SAS)"
  - "TfNSW R0220-04 (grate frame SA)"
  - "TfNSW R0220-28 (deep pit / pipe >450mm)"
  - "TfNSW R0220-43 (pit-to-pipe connection — rocker pipe)"
start_date: TBC
target_pc: TBC
bid_due: this week (exact day TBC)        # Huss 2026-05-04: due this week, exact date not yet known
qs_call: TBC
created: 2026-05-04
created_by: claude-code-coo (drafted from 5 PDFs in 03a + RFI 36 + TfNSW R11/R53 specs while Rocky verifies job numbers with Huss)
---

# Job Brief — 2626 Mack Civil — Stormwater Pit EXA01A/08

## Huss check-in 2026-05-04

Walked through with Huss while Liam in office. Answers:

1. **LFCS internal job number 2626** — assumed correct (no objection raised). ✓
2. **Bid due date** — **this week**. Huss does not know the exact day yet. Treat as urgent — Rocky to chase Mack Civil for the closing date as priority.
3. **Mack Civil bid contact** — **unknown**. Rocky to chase. (Syed Jaowad is QM/RFI author — try him first if no separate contact surfaces.)
4. **Pricing basis to Mack Civil** (lump sum vs T+M back-to-back) — **unknown**. Rocky to confirm with Mack Civil when he chases the bid date.
5. **RFI 36 contractor acceptance signed?** — **unknown**. Confirm before LFCS commits resource.
6. **Approved "Accepted for Construction" drawings** — **unknown / not yet supplied**. Request from Mack Civil; pricing to carry an assumption clause if AfC drawings remain unavailable at submission time.
7. **2602 Munmorah cross-check** (Drive folder = "TCE 242 HCB Bridge") — Huss not certain. Hold as 2602 for now per existing vault folder naming. Revisit when Mack Civil / Dec Projects confirm.
8. **Hornsby (Solutions Field of Play)** — Huss has not assigned an LFCS internal job number yet. Park until assigned; do not scaffold a vault folder until a number exists.

**Net status:** 5 of 8 items came back "unknown". Rocky to chase Mack Civil today for items 2, 3, 4, 5, 6 — those are the bid-blocking unknowns. Pricing draft can begin in parallel against TfNSW R0220 standard pit assumptions, but the submission cover + qualifications page must reflect the unknowns at the time of submission.

## Scope (1–3 sentences)

Demolish the existing non-compliant brick kerb-inlet pit at chainage **EXA01A/08** (750mm × 800mm, 850mm deep, brick walls on a concrete base sitting on top of an existing DN900 RCP), and construct a **new cast-in-situ TfNSW-standard stormwater pit** in its place — generally per TfNSW Standard Drawings **R0220-01 + R0220-28**, around the existing live DN900 RCP (which is broken back through the new pit walls only after the pit is complete). LFCS scope is **F+R+P (formwork, reinforcement, pour) + demolition of existing brick pit + non-destructive excavation around the DN900 pipe**. Concrete supply, kerb/channel reinstatement, asphalt reinstatement, traffic control and CCTV inspection are NOT in LFCS scope unless confirmed otherwise.

## Quantities at a glance (LFCS scope only, indicative — verify against drawings)

| Element | Qty | Unit | Notes |
|---|---|---|---|
| Demolition — existing brick pit | ~0.5 | m³ | 750 × 800 × 850mm; protect DN900 RCP underneath |
| Non-destructive excavation around live pipe | ~3 | m³ | around DN900 + work zone |
| Blinding layer (50mm plain concrete) | ~0.2 | m³ | base of excavation per R11 4.7.2 |
| **Pour 1** — base slab + mass concrete benching around DN900 | ~0.7 | m³ | N25 per drawing, 50mm cover to reo |
| **Pour 2** — walls + roof slab (around precast SAS lintel) | ~1.7 | m³ | N25, 150mm wall thickness |
| Reinforcement — N12@200 each way both faces + N12-U-200 trim at pipe penetrations | ~0.18 | t | Grade 500N, ACRS-certified supplier required |
| Formwork — walls (internal + external) | ~13 | m² | external = excavation face possible if shored |
| Formwork — soffit (around precast lintel) | ~3 | m² | suspended off walls |
| Construction joint between Pour 1 and Pour 2 | 1 | item | roughened + clean per R53 3.3.9 |
| Sealing transverse joints / lifting holes | 1 | item | Bituthene or equiv per R11 4.5.3 |
| Step irons (galvanised, AS 1657) | 1 | set | required if pit depth >600mm — depth ~850mm = YES |
| Curing (7 days minimum) | 1 | item | wet / sealed / curing compound per R53 3.4 |
| Backfill — Type SO Select Fill + general fill | ~6 | m³ | per R11 4.9 — Mack Civil scope unless agreed |

**LFCS to confirm in scope:** demolition, non-destructive excavation, F+R+P, step irons, curing.
**Likely OUT of LFCS scope (confirm with Huss):** concrete supply, precast SAS lintel + grate frame supply, traffic management/road closure, kerb-channel reinstatement, asphalt reinstatement, surveying/setout, CCTV pipe inspection, backfill compaction.

## Key risks identified

1. **Live DN900 RCP through the pit footprint.** Existing pipe carries flow during construction. Non-destructive excavation around and beneath required (R11 4.7 / RFI proposal). Strike risk = high consequence (TfNSW NCR + flow-through stoppage). → **Mitigation: exclude pipe-strike repair costs unless caused by LFCS direct strike + pre-mark pipe location with TfNSW SO before excavating.**
2. **RFI 36 contractor acceptance NOT signed (page 5 of RFI).** TfNSW SO has issued the dayworks instruction; Mack Civil have not yet formally accepted. → **Mitigation: do not commit LFCS labour/materials until Mack Civil have signed acceptance.**
3. **"Accepted for Construction" drawings not in the pack.** RLs (invert, surface, pipe levels) are to be set out from those drawings per RFI 36 response point 3. Without them, LFCS cannot verify pit geometry. → **Mitigation: request Mack Civil supply the AfC drawing set before setout. Add qualification: "Pricing assumes pit dimensions per TfNSW R0220-01/-28; any deviation in AfC drawings is a variation."**
4. **R11 + R53 spec compliance burden.** TfNSW Project Quality Plan, Hold Points, Witness Points, Identified Records, NATA-endorsed concrete mix, ACRS-certified reo, AAR-tested aggregates, CCTV inspection, certificate of conformity per pour. Heavy admin lift vs typical commercial work. → **Mitigation: price in QA/admin labour (~0.5–1 day per pour for paperwork) + Engineer's Cert of Conformity for joint pre-backfill (R11 4.4.2 Hold Point).**
5. **Two-pour sequence with construction joint** (Pour 1 = base + benching around DN900; Pour 2 = walls + roof slab — per RFI 36 proposal sketch page 6). Adds programme time (cure between pours, joint prep). → **Mitigation: build pour sequence into programme + price formwork + 7-day cure window.**
6. **N12-U-200 bar trim at pipe penetrations** (proposed 375mm + existing 375mm + DN900). Fiddly bar fixing labour around live pipe — slow productivity. → **Mitigation: bar fixing rate carries premium for penetration trim work; assume reduced productivity factor.**
7. **Pit depth ~850mm (>600mm)** triggers step iron requirement per R11 4.7.4 + AS 1657. Galvanised, hot-dipped per AS/NZS 4680. → **Mitigation: include step irons in scope + supply.**
8. **Concrete grade N25** per drawing NOTES item 1 + R53 Annexure E default for drainage structures. Submit mix design (Hold Point R53 2.4.3) at least 5 working days before first pour — or use TfNSW Register of Concrete Mixes. → **Mitigation: confirm preferred concrete supplier is on the TfNSW Register; if not, allow lead time for project assessment.**
9. **Witness Point** on excavation for drainage structures (R11 4.3) + on construction of "other drainage structures" (R11 4.7.2) — 24h–7d advance notice to Principal. → **Mitigation: build inspection lead-times into programme.**
10. **Dayworks docket discipline.** Each shift's daywork sheet must be reviewed + signed by MC Site Supervisor + TfNSW SO at end of shift (RFI 36 response point 5). Unsigned dockets = not paid. → **Mitigation: site supervisor must hand-deliver dockets at end of each shift; LFCS keep originals + photo-copies.**
11. **Concrete temperature limits** (R53 3.3.2): no place if air <5°C or >35°C, or concrete <10°C or >32°C. Late-autumn/winter Sydney pours OK; early-morning frost a watch. → **Mitigation: monitor + record per R53 3.3.2 Identified Record.**
12. **CCTV inspection** of all connected pipes per R11 5.2 (Hold Point on commencement of overlying pavement). LFCS likely NOT in scope but the pit is the inspection node. → **Confirm with Huss whether CCTV is Mack Civil or LFCS.**
13. **Sealing of lifting holes + flush/butt joints** per R11 4.4.4 — small but easy to forget on a one-off pit. → Include in QA checklist.
14. **AAR aggregate testing + ACRS reo certification.** Concrete supplier + reo supplier must be qualified. → Use suppliers on TfNSW Register; otherwise lead time + cost adder.
15. **Hold Point on backfill** (R11 4.4.2) — signed Cert of Conformity by competent Engineer for joints/pipes before backfill released. Engineer cost (~$300–800 per inspection) → price into rate or add as separate line.

## Construction sequence (per RFI 36 proposal sketch page 6)

1. Traffic management + site setup (Mack Civil scope likely).
2. Saw-cut pavement around pit footprint (R11 4.3 — square edges, no damage to retained pavement).
3. Demolish existing brick pit. Protect DN900 RCP. Dispose to licensed facility per R44.
4. Non-destructive excavation around + beneath DN900 RCP. Provide alt flow channel if required.
5. **Hold Point**: TfNSW SO inspects excavation + foundation (R11 4.3 Witness Point + 4.3.3 Hold Point if inadequate foundation).
6. 50mm blinding layer plain concrete (R11 4.7.2 / R53).
7. **Pour 1**: form, fix reo (N12@200), pour base slab + mass concrete benching around DN900. Construction joint surface roughened on top.
8. Cure 7 days minimum. **Hold Point**: backfill release per R11 4.4.2 (Cert of Conformity).
9. **Pour 2**: form walls + soffit around precast SAS lintel. Fix reo (N12@200 each way both faces, N12-U-200 trim at pipe penetrations). Install step irons.
10. Pour Pour 2. Cure 7 days.
11. Strip formwork (≥2 days external surfaces per R53 3.3.7).
12. Install grate frame (precast SA per R0220-04). Bituthene seal lifting holes.
13. **Break back DN900 RCP** through pit walls — NOW pit is complete.
14. Backfill with Type SO Select Fill (Side + Overlay zones) + general fill (R11 4.9). 95% relative compaction min.
15. **Hold Point**: CCTV inspection (R11 5.2) before pavement reinstatement.
16. Pavement + kerb/channel reinstatement (Mack Civil scope likely).

## Subbies / labour expected

- **Concrete supply:** TBC (must be on TfNSW Register of Concrete Mixes OR submit project-assessed N25 mix 5+ working days before first pour). Boral / Holcim / Hanson local Peakhurst.
- **Reo supply:** TBC. Must be ACRS-certified (Onesteel, Infrabuild, or local equivalent).
- **Concrete pump:** likely required given congestion + depth. TBC.
- **Formwork:** internal LFCS likely. Built-to-suit timber/ply forms; small one-off so not worth Formhire setup.
- **Step iron supply:** TBC (galvanised AS 1657 + AS/NZS 4680). Typically off-shelf from a TfNSW-aware supplier.
- **Precast SAS lintel + SA grate:** likely Mack Civil supply — confirm.
- **Demolition disposal:** licensed facility per R44.
- **Internal LFCS labour:** crew of 3–4 for ~3–4 days site (excluding cure).

## Key dates / milestones

- 2026-02-10 (Tue) — RFI 36 raised by Mack Civil QM (Syed Jaowad)
- 2026-02-13 (Fri) — TfNSW SO (Zaki Mirza) signed RFI response — dayworks instruction issued
- ⚠ Contractor acceptance signature on RFI 36 — **NOT YET SIGNED**
- 2026-04-30 (Wed) — Mack Civil scaffolded their internal job folder + sent RFQ pack to LFCS
- 2026-05-04 (Mon) — Rocky in office; LFCS bid prep started; Huss confirming numbers
- 2026-05-?? — bid due (this week per Huss 2026-05-04; exact day TBC — Rocky to chase Mack Civil)
- TBC — Mack Civil acceptance + LFCS engagement
- TBC — site mobilisation (after kerb-line saw-cut + pavement removal by Mack Civil)
- TBC — practical completion (~4–6 working days of LFCS site time once started)

## Notes from extraction pass

claude-code-coo extracted from these 5 source files in 03a + 02a + 06b on 2026-05-04 morning (text-pass + vision):

- `2626_DWG_Cast-In-Situ-Pit-Details.pdf` (1 page, sketch — proposed pit overview, not formal AfC drawing)
- `Pit EXA0108 Proposal.pdf` (1 page, sketch — same as RFI 36 attachment, formal pit detail with reo + dimensions per R0220-style)
- `RFI36.pdf` (5 pages — TfNSW RFI 36 raised by Mack Civil 2026-02-10, response signed by TfNSW SO 2026-02-13; contractor acceptance not yet signed)
- `2626_SPEC_TfNSW-R011_E5-R8.pdf` (TfNSW Specification R11 Stormwater Drainage, Ed 5 Rev 8, project-specific October 2024)
- `2626_SPEC_TfNSW-R053_E3-R5.pdf` (TfNSW Specification R53 Concrete for General Works, Ed 3 Rev 5, project-specific October 2024)
- `2626_DWG_Stormwater-Combined-ESCFRBSDD.pdf` (NOT yet read in detail — combined SW drawing pack 2.6MB; likely full project SW layout for whole intersection upgrade. Reference only — pit EXA01A/08 details already covered by R0220 standard drawings.)

**Vision-pass status:** Phase-0 manual eyes-on still mandatory before pricing per `lfcs-drawing-extract-text` skill hard rule. Rocky to review the 4 drawing PDFs himself and verify that the proposal sketch is what's actually being priced.

**ZIP file** `fwdrequestforquotationcastinsitustormwaterpitcon.zip` failed to download via gws CLI (returned 0 bytes twice). Manual download required from https://drive.google.com/file/d/1Q1n_LHHzhEX7uEUfihyEl2RMytnBCrPx/view → drop into `02 - Scope and Pricing/02a - Quotes and Estimates/`. The zip likely contains the original RFQ email + any additional attachments not separately uploaded.

## Open from this scaffold

- [x] ~~Rocky: confirm with Huss the 8 items at the top of this brief~~ — done 2026-05-04, 5 of 8 came back unknown
- [ ] Rocky: chase Mack Civil today for bid due date + bid contact + pricing basis + RFI acceptance status + AfC drawings (5 unknowns)
- [ ] Huss: assign Hornsby (Solutions Field of Play) an LFCS internal job number
- [ ] Rocky: download the failed zip manually + drop into 02a
- [ ] Rocky: vision-pass review the 4 drawing PDFs in 03a + 02a (Phase-0 mandatory)
- [ ] Rocky: request Approved "Accepted for Construction" drawings from Mack Civil
- [ ] Rocky: confirm RFI 36 contractor acceptance is signed before LFCS commits resource
- [ ] cowork-lfcs: run `lfcs-drawing-extract-text` on the 5 PDFs → produce `Drawing-Index.md` in 03a
- [ ] cowork-lfcs: push Drawings + Drawing-Elements rows to Airtable LFCS-Drawings base (link to Job rec `recrfQwVeTUAUBl3s` after Huss confirms 2626 = right number)
- [ ] cowork-lfcs: confirm preferred concrete supplier is on TfNSW Register of Concrete Mixes; if not, kick off project assessment lead time
- [ ] cowork-lfcs: confirm reo supplier is ACRS-certified
- [ ] cowork-lfcs: build pricing working sheet — F+R+P + demo + non-destructive excavation + step irons + QA admin
- [ ] cowork-lfcs: draft Inclusions-Exclusions per the qualifications listed in "Key risks"
- [ ] cowork-lfcs: draft submission cover + dayworks-docket-discipline rider