BOLT RB-118 · Skagit Bluff
| Location | 12+462 L |
| Bolt number | RB-118 |
| Length of bar in the rock | 6.0 m |
| Bonding | resin · lot R-2231 · ≥90 MPa cured |
| Resin spin | start 09:12 · end 09:14 |
| Equipment | jack JK-2 + pump PM-2 calibrated 14 Aug, valid to 13 Sep |
| Tester | — |
| Weather / temperature | overcast · 11 °C auto-filled from the nearest observation, confirmable |
Creep test186 kN · hold 10 min · lock-off 140 kN
A torque wrench must not be used for tensioning.
| min 1 | 186 | min 6 | 182 |
| min 2 | 185 | min 7 | 182 |
| min 3 | 184 | min 8 | 181 |
| min 4 | 184 | min 9 | — next in 0:37 |
| min 5 | 183 | min 10 | — |
Live acceptance
load loss 2.7% ✔ (anchorage failure at > 10%)
head creep 0.8 mm ✔ (must not exceed 2 mm)
Evaluated as the readings arrive — so a failing bolt is known before the crew moves on, not when the record is typed up.
End time stamped. The test joins today's Daily Rock Bolt Testing and Tensioning Record.
A replacement bolt is raised, installed at the contractor's expense. Both the failure and the replacement stay on the record.
If the lift-off load is not within 10% of the specified lock-off, a lift-off test of a different bolt is required.
Layout as specified in SCR-029-rock-bolt-test.md
┌───────────────────────────────────────────────────────────────┐ │ ‹ back BOLT RB-118 · Skagit Bluff ⚠ OFFLINE │ ├───────────────────────────────────────────────────────────────┤ │ BOLT location 12+462 L · no. RB-118 · length 6.0 m │ │ BONDING resin ▾ lot ____ ⓘ ≥90 MPa cured (SS 206.05) │ │ resin spin start [ 09:12 ] end [ 09:14 ] │ │ EQUIPMENT jack JK-2 + pump PM-2 (calibrated pair) │ │ calibrated 14 Aug · valid to 13 Sep ✔ │ │ TESTER [ ______ ] │ │ CONDITIONS weather [ overcast ] temperature [ 11 °C ] │ │ (auto from nearest observation, confirm) │ ├───────────────────────────────────────────────────────────────┤ │ TEST target 186 kN · hold 10 min · lock-off 140 kN │ │ ⓘ torque wrench must not be used │ │ start [ 09:20 ] │ │ ┌────────────────────────────────────────────────────────┐ │ │ │ min 1 [ 186 ] kN min 6 [ 182 ] kN │ │ │ │ min 2 [ 185 ] min 7 [ 182 ] │ │ │ │ min 3 [ 184 ] min 8 [ 181 ] │ │ │ │ min 4 [ 184 ] min 9 [ ___ ] ← next in 0:37 │ │ │ │ min 5 [ 183 ] min 10 [ ___ ] │ │ │ └────────────────────────────────────────────────────────┘ │ │ LIVE load loss 2.7% (fail >10%) ✔ │ │ head creep 0.8 mm (fail >2 mm) ✔ │ ├───────────────────────────────────────────────────────────────┤ │ end [ ____ ] LOCK OFF at 140 kN [ record ] │ │ lift-off within 10% of lock-off? → else retest another bolt │ └───────────────────────────────────────────────────────────────┘
Implements spec/03-screens/SCR-029-rock-bolt-test.md · SCR-029 · Personas QC · Stories US-QC-004