AMBIENT 4 °C — cold-weather provisions apply.
In-place shotcrete must be 10–25 °C at placement, must not fall below 5 °C during the initial four-day curing period,
and must not be applied to frozen surfaces or surfaces covered with frost, ice or snow.
| Date | Location | Placed | Rebound | 7-day | 28-day | Payment |
|---|---|---|---|---|---|---|
| 26 Aug | 12+440–70 | 18 m³ | 2.4 m³ | ◷ 2 Sep | ◷ 23 Sep | awaiting 7-day |
| ↳ wet process · in-place 14 °C ✔ · surface not frozen ✔ · panels SP-08, SP-09 · cure watch day 1 of 4, min 6 °C ✔ | ||||||
| 21 Aug | 12+400–40 | 24 m³ | 3.1 m³ | 31.2 MPa | ◷ 18 Sep | 75% releasable |
| 14 Aug | 12+360–400 | 31 m³ | 4.0 m³ | 28.9 MPa | 38.1 MPa | fully releasable |
| 31 Jul | 12+320–60 | 22 m³ | 2.8 m³ | 24.1 MPa | 21.4 MPa deficient | reduced payment may be considered |
Rebound is recorded separately from placed volume, because the Ministry will not pay for volume lost to rebound, sloughing, rejected or discarded shotcrete.
Contractor's Consultant
Independent — not an employee. Shotcrete designed for at least three projects over the last five years. On-site representative is an ACI or CCIL certified concrete technician.
signed field report per site visit — ◷ 26 Aug
Testing laboratory
Independent, qualified, CCIL certified to CSA A283, with a proven record of testing shotcrete on at least five previous projects.
Recording a placement schedules its 7-day and 28-day results automatically as awaited items — so they are chased from the day of placement, not remembered a month later.
Layout as specified in SCR-031-shotcrete-placements.md
┌──────────┬────────────────────────────────────────────────────┐ │ NAV │ Skagit Bluff › Shotcrete [+ placement] │ │ ├────────────────────────────────────────────────────┤ │ │ ⚠ AMBIENT 4 °C — cold-weather provisions APPLY │ │ │ in-place 10–25 °C at placement · not below 5 °C │ │ │ for 4 days · no frozen/frost/ice/snow surfaces │ │ ├────────────────────────────────────────────────────┤ │ │ Date Location Placed Rebound 7d 28d │ │ │ ──────────────────────────────────────────────── │ │ │ 26 Aug 12+440–70 18 m³ 2.4 m³ ◷2 Sep ◷23 Sep │ │ │ wet process · mix ____ · in-place 14 °C ✔ │ │ │ panels SP-08, SP-09 · surface: not frozen ✔ │ │ │ 4-day cure watch: day 1 of 4 · min 6 °C ✔ │ │ │ 21 Aug 12+400–40 24 m³ 3.1 m³ ✔ 31.2 ◷18 Sep │ │ │ MPa │ │ │ → 75% releasable · 25% held pending 28d + docs │ │ │ 14 Aug 12+360–400 31 m³ 4.0 m³ ✔ ✔ 38.1 │ │ │ → fully releasable │ │ ├────────────────────────────────────────────────────┤ │ │ CONSULTANT (independent, ≥3 projects / 5 yrs) │ │ │ surface prep observed ▨ · application ▨ · curing ▨│ │ │ signed field report per site visit ◷ 26 Aug │ │ │ LABORATORY CCIL-certified to CSA A283, ≥5 projects│ └──────────┴────────────────────────────────────────────────────┘
Implements spec/03-screens/SCR-031-shotcrete-placements.md · SCR-031 · URL /projects/{project}/shotcrete · Personas QC, TECH · Stories US-QC-006, US-TECH-009