---
title: Munmorah Bridge — Bid Prep Analysis
created: 2026-05-03
created_by: cowork-hq (one-time exception)
status: live-working-doc
related:
  - "[[00-brief]]"
  - "[[Pre-Call-Questions-2026-05-05]]"
  - "[[Inclusions-Exclusions]]"
  - "[[Drawing-Index]]"
---

# Bid Prep Analysis — 2602 Dec Projects — Munmorah Bridge

> Drafted by cowork-hq from PDF text extraction + xlsx parsing of the three tender documents on 2026-05-03 evening. Working doc — `cowork-lfcs` to refine after Tuesday QS call.

## What we're bidding on

**Subcontract F+R+P package** for a new bridge over Hammond Canal at the old Munmorah Power Station (Station Road, Colongra NSW). LFCS prices the formwork, reinforcement, and concrete pour work for substructure, superstructure, approach slabs, and barrier install. Head contractor / QS is **Dec Projects** (signatory: Robert, `tenders@decprojects.com.au`). Designer is **Northrop Consulting Engineers** (Newcastle for structural, Sydney for civil).

Bid closes Wednesday 2026-05-07. QS call Tuesday 2026-05-05 evening.

## Tender document register

| Doc | File | Issued | Drafter | Pages | Sheet size |
|---|---|---|---|---|---|
| Structural drawings | `2602_STR_Munmorah-Bridge-TCE_Rev1_2025-08-29.pdf` | 29.08.25 | R Officer / Northrop Newcastle | 3 | A1 |
| Civil drawings (reference only — not LFCS scope) | `2602_CIV_Munmorah-Bridge-Stormwater_Rev2_2025-09-17.pdf` | 17.09.25 | P Cornish / Northrop Sydney | 4 | A1 |
| Bill of Quantities | `P424-HCB-BOQ-FRP-Package.xlsx` | 11.12.25 (Rev A) | Dec Projects | 57 rows | n/a |

**Status of all drawings: ISSUE FOR INFORMATION — NOT FOR CONSTRUCTION.** Northrop's note: *"Upon project award scaled CAD drawings will be produced to the relevant drafting standard."* Critical implication: design WILL change post-award. Submission must protect against this.

## Bridge specifications

### Geometry
- **Overall length:** 34.0 m
- **Span between centerline of bearings:** 32.4 m
- **Overall deck width:** 8.2 m
- **Carriageway:** 8.2 m (2 × 3.5 m lanes + 2 × 600 mm shoulders)
- **Cross-fall:** 3% each way from control line
- **Clearance from canal bed:** ~5.5 m typ (per drawing)
- **Pile sockets** into Unit 4 rock, ~2.5m below approx top of rock

### Structure
- 4 × **TfNSW Type T4 Super-T girders** (1515 mm deep) — supplied by others
- **200 mm thick cast-in-situ RC deck** with transverse broom finish
- **1500 W × 1000 (min) D RC abutments** — LFCS scope
- **200 mm thick cast-in-situ RC L-walls** (wingwalls / retaining walls) — LFCS scope
- **150 mm thick abutment curtain wall** (at back of headstock)
- **900 mm dia bored concrete piles** (TfNSW Spec B59), 180 kg/m³ reo — pile install NOT LFCS scope
- **Diaphragm beams at abutments** (typical)
- **Laminated elastomeric bearings** (350 × 280 × 157, AS p/n 040910R) with stainless steel restraint pins, attachment plates, tapered mortar pad — install LFCS, supply assumed by others
- **Steel thrie beam barriers** (150 × 100 × 6 RHS supports at 1500 ctrs, cast-in anchors) — barrier supply by others

### Codes / loading
- **AS5100 (2017)** bridge code
- **Traffic loading:** SM1600 + HLP320 to AS5100.2 (2017)
- **Design speed:** 60 km/hr
- **Design life:** 100 years
- **Earthquake:** BEDC-1
- **Min lateral load:** 500 kN to AS5100.2 (2017)
- **Flooding:** Bridge design assumes NOT impacted by 0.05% AEP flood (out of LFCS risk; engineer's call)
- **Geotech:** Reduction factor 0.4 on ULS design parameters; no pile testing required

### Existing conditions (LFCS impact)
- Existing concrete channel walls on Hammond Canal (concept-design referenced)
- 2:1 batters on existing terrain
- Local cut-back of channel wall + **Renderoc ST06 patch repair** for exposed reo (LFCS scope per BOQ)
- Existing services nearby — **risk to LFCS work**:
  - Water main (against canal wall) — to be retained, contractor confirms exact location
  - 1200DN dirty water line — to be retained
  - Live electrical supply to control room — to be adjusted to avoid bridge structure
  - Monitor well — investigation required
  - Existing electrical pits — adjust to suit new levels
  - 900DN SWD line — remove + canal wall reinstated
  - Stormwater drainage swales + pits — civil scope (separate)

## Quantities (LFCS scope, per BOQ)

### Substructure (Section 6)
| Item | Qty | Unit |
|---|---|---|
| 6.1.1 Cut + remove section of southern Hammond Canal wall (incl. saw-cut, demo, disposal) | 1 | Item |
| 6.2.1 Formwork + falsework — abutments (incl. pile caps) | 68.24 | m² |
| 6.2.2 Formwork + falsework — wingwalls | 214.49 | m² |
| 6.3.2 Place + fix reo — abutments (tying into pile caps) | 15.9192 | T |
| 6.3.3 Place + fix reo — wingwalls (tying into abutments) | 13.3319 | T |
| 6.4.1 Place + finish concrete — abutments | 53.064 | m³ |
| 6.4.2 Place + finish concrete — wingwalls | 44.4397 | m³ |
| 6.5.1 Strip formwork — abutments | 53.06 | m² |
| 6.5.2 Strip formwork — wingwalls | 44.44 | m² |
| 6.6.2 Install bearings (per design) | 1 | Item |

### Superstructure (Section 7)
| Item | Qty | Unit |
|---|---|---|
| 7.1.2.2 Supply + install scaffolding + temporary walkways for girder + parapet install | 1 | Item |
| 7.1.2.3 Launch Super-T girders, place + temp bracing — **CRANAGE NOT INCLUDED** | 1 | Item |
| 7.2.1.1 Formwork + falsework — bridge deck | 80.742 | m² |
| 7.2.2.2 Fix reo — bridge deck | 34 | T |
| 7.2.2.3 Install bridge deck drainage system | 64.8 | m |
| 7.2.3.1 Pour + finish bridge deck concrete | 101.617 | m³ |
| 7.2.3.2 Install expansion joints — bridge deck | 29.72 | m |
| 7.2.4.1 Strip bridge deck formwork | 25 | m² |

### Approach slabs (Section 8)
| Item | Qty | Unit |
|---|---|---|
| 8.2.1 Formwork + falsework — approach slabs (incl. joints) | 44.12 | m² |
| 8.3.2 Fix reo — approach slabs | 5.922 | T |
| 8.4.1 Pour + finish approach slabs concrete | 41.489 | m³ |
| 8.4.2 Install expansion joints — approach slabs | 29.72 | m |
| 8.5.1 Strip approach slabs formwork | 20 | m² |

### Barriers (Section 9)
| Item | Qty | Unit |
|---|---|---|
| 9.2.2 Lift + install precast parapet barriers, place + temp bracing — **CRANAGE INCLUDED** | 1 | Item |

### Totals
- **Concrete: ~240.6 m³**
- **Reinforcement: ~69.2 T** (avg ~287 kg/m³ — heavy)
- **Formwork erection: ~407.6 m²**
- **Formwork strip: ~142.5 m²**
- **Drainage system install: 64.8 m**
- **Expansion joints install: 59.44 m**

## Cost framework (skeleton — cowork-lfcs to fill)

For each line item, build the rate from:
1. Material cost (concrete @ $X/m³, reo @ $X/T, formwork @ $X/m² hire + erection labour, etc.)
2. Labour cost (hours × rate-card per `lfcs-standards/rate-card.md`)
3. Plant cost (formwork crane, concrete pump, vibrators, etc.)
4. Overhead allocation
5. Margin

Rate-card baseline (from `lfcs-standards/rate-card.md`):
- Day shift first 8h: $85/hr
- Day shift OT (9-10h): $105/hr
- Day shift double time (after 10h): $120/hr
- Night first 2h: $105/hr; after 2h: $140/hr
- Saturday first 2h: $105/hr; after: $120/hr
- Sunday all hours: $120/hr

**Suggest a separate working file** at `02a Quotes and Estimates/Pricing-Working-2026-05-06.xlsx` (copy of BOQ with rates filled). Do NOT modify the original BOQ — keep it as the issued tender document.

## Variation rate template (for submission qualifications)

If awarded with NFC drawings, pre-agree these so any post-award scaled-CAD changes are easy to price:

- Additional concrete: $X/m³ (supplied + placed + finished)
- Additional reo: $X/T (placed + fixed)
- Additional formwork: $X/m² (erect + strip)
- Day labour: as per `lfcs-standards/rate-card.md`
- Saw-cutting: $X/lin m of cut by depth band
- Demolition: $X/m³ disposed (broken concrete to landfill, asbestos excluded)

## What NOT to include (the exclusions list)

See full draft at `02a Quotes and Estimates/Inclusions-Exclusions.md`. Headlines:
- Cranage for Super-T launch (BOQ explicit — "Cranage Not Included")
- Supply of: Super-T girders, bearings, drainage components, expansion joints, precast parapet barriers
- Pile installation
- All civil/pavement/stormwater works
- Electrical works
- Site survey, geotech, design coordination
- Traffic management
- Provisional sums + contingency
- PI insurance (engineer's, not yours)
- Costs of latent conditions, asbestos/contamination
- Costs of NFC → IFC drawing scope changes (covered by VO clause)

## Submission strategy

1. **Cover letter** — brief, professional, references the BOQ Rev A and drawing references, states submission rev/date.
2. **Priced BOQ** — fill rates in the issued BOQ format. Don't change line items or quantities (raise queries, don't unilaterally adjust).
3. **Inclusions / exclusions / qualifications** — separate document, signed.
4. **Variation rate schedule** — pre-agreed VO rates per the template above.
5. **Programme assumption** — even a rough sequence (substructure 6 weeks → super-T launch 1 week → deck + approach 4 weeks → barriers 2 weeks = 13 weeks indicative).
6. **Reference projects** — 2-3 LFCS bridge / RC structure projects of similar scale, with contact references.
7. **Insurances + accreditations** — copies of PL, WC, ABN, any prequal certificates.

## Confidence flags

This analysis is based on **PDF text extraction + xlsx cell parsing only**. I did NOT do a vision pass on the actual drawing images, so:
- Drawn dimensions outside text labels may be missed
- Geometric clashes between drawings would not be visible
- Detail bubbles, section markers, and graphical notes may be incomplete in this summary

**Rocky must read each drawing himself** (all 7 pages) before finalising any rates. Cross-check this analysis against the drawn detail. Flag any discrepancies in the Tuesday call.