---
job_no: 2627
purpose: Scope skeleton — itemised BoQ extracted from a worker-readable scope source. Defines WHAT to price, NOT how much. Rates / totals / per-line $ / author identity / loading basis stripped. Worker uses this as authoritative scope; produces independent rates from locked envelope.
session_id: 80b1f893-d887-4130-b96f-dd48d5450edd
created: 2026-05-08
authored_by: claude-code-orchestrator
visibility: worker-readable (whitelist this file for the lfp prompt)
calibration_safe: true (no rates, no totals, no author tag — knowing 1,128 m² of 125mm pavement does NOT reveal a $/m² rate; calibration independence preserved)
---

# 2627 — Scope skeleton

This is the authoritative scope for bid 2627 first-pass take-off. The previous first-pass relied on STR25020 + P171342 alone and missed pavement / kerb / nosing scope (architectural plans not supplied). The full scope (8 items + prelim) is itemised below for the worker to price independently against the locked envelope.

## Items

| Item | Description | Qty | Unit | Notes / flags |
|---|---|---|---|---|
| 3.01 | Concrete footpath, ramp + BBQ-area pavement, broom finish, including reinforcement placement (FRP labour only) | 1,128 | m² | Concrete grade per drawings rev D = 32 MPa for slab on ground (S100/S200 concrete quality table). Spec P171342 §4 names 35 MPa flexural for pavement base — RFI #7 to designer; price provisionally at 32 MPa per drawings; HC pays supply premium if upgraded. Slab thickness **125mm**. SL82 mesh (HC supply). |
| 3.02 | Concrete footpath + ramp, broom finish, including reinforcement placement (FRP labour only) | 147 | m² | Slab thickness **150mm**. 32 MPa per drawings rev D. SL82 mesh (HC supply). |
| 3.05 | Strip footing including reinforced concrete (FRP labour only) | 90 | m | "Piles" wording in source-of-scope is FLAGGED — piling is by piling sub per Standard Exclusions Library STD-SPT-03; LFCS prices reo-fix + concrete pour to footings only. Pile install / pile trim NOT in scope. SF1 (450 × 500) + SF2 (300 × 500) per S100. |
| 3.06 | Drop edge beam + RC (FRP labour only) | 21 | m | DEB1 1200 max deep × 300 thick per S200 detail. **Productivity reduction +30%** for deep-edge formwork strip + strike + single-face pour — already baked into worker rate. |
| 3.07 | Walls (block + core fill + reo) | 74 | m² | **EXCLUDED — masonry sub scope.** Matches Standard STD-SPT-15 + standard supply split. Listed for completeness; do NOT price. |
| 3.08 | Seating + steps + RC + base preparation + reinforcement placement (FRP labour only) | 55 | m² | 3 lifts stepped SF1 per S51. **Productivity reduction +10-15%** for stepped-form layout — already baked. Membrane + sealer **NOT LFCS** (waterproofing sub per STD-SPT-14). |
| 3.09 | Nosing strip — installation only | 46 | m | Strip supply by others; LFCS labour-only install. Marginal item; assume 1L × 1.5d × 10h = 15h. |
| 3.15 | Concrete edging (kerb) — broom-finish edge to pavement | 153 | m | FRP labour only; reo + concrete by HC. |
| PRELIM | Mobilisation, demobilisation, allowance for fuel + small plant (vibrators, floats, screed rails, hand trowels) | 1 | LS | Lump sum — orchestrator default ~$4,400 from §7 magnitude. Worker may revise. |

## What worker MUST do

- Apply LFCS scope (formwork S+I+strip + steel fix only + concrete place+finish only + curing) to items 3.01, 3.02, 3.05, 3.06, 3.08, 3.15.
- Price item 3.09 as install-only labour (no formwork, no reo, no concrete supply).
- EXCLUDE item 3.07 entirely (masonry sub; $0 line; mention in exclusions output).
- Use the locked intake envelope ($95/hr blended; labour ×1.10×... wait, override applied — labour ×1.15 cont × 1.15 margin = 1.3225; materials × 1.15 margin × 1.15 cont = 1.3225; LAFHA OUT; weather exclude; inland; 32 MPa).
- Produce labour MH per item + material direct $ per item + loaded total per item + grand total ex GST direct + grand total ex GST loaded.
- Output: **append to existing `02 - Scope and Pricing/02b - BOQ and Rate Schedules/2627-First-Pass-Priced-TakeOff-2026-05-08.md` as a "rev 2 — full-scope pass" section** (do NOT overwrite the rev 1 structural-only pass; both views useful for sanity-check).

## What's NOT in this skeleton (intentional)

- Per-line rates from the source-of-scope
- Per-line totals from the source-of-scope
- Grand total from the source-of-scope
- Author identity, document authoring date, document title
- Loading basis (margin %, contingency %, blended rate $/hr) of the source-of-scope
- Any productivity benchmark used by the source-of-scope

These are calibration data and remain quarantined. The worker derives its own rates + productivity from `_methodology_*` rows + Rate Card V1.7 (or per-job overrides via locked envelope) + standard productivity benchmarks for in-situ concrete pavement.

## Why this works for BCS

Knowing "1,128 m² of 125mm pavement broom finish with reo" tells the worker **what** to price. It does NOT tell the worker **what rate** the comparator used. Worker's $95/hr × MH-per-m² × 1.3225 produces an independent number; comparator's $/m² rate is unknown to worker. Calibration independence preserved at REVEAL: do-worker-and-comparator-arrive-at-similar-or-different-rates-for-the-same-items? remains a meaningful question.