Underpinning & Ground Stabilisation RAMS — Generate in Minutes
Generate comprehensive RAMS for underpinning and ground stabilisation works. Covers sequential bay underpinning, structural monitoring, temporary propping, ground anchors, and grouting operations — one of the most technically demanding and high-risk operations in UK construction. Compliant with CDM 2015, BS 8004:2015, and BS 5975:2019.
What an Underpinning RAMS Covers
- Sequential bay excavation sequences approved by the structural engineer
- Structural monitoring — crack gauges, settlement targets, and trigger levels
- Temporary propping and shoring procedures per BS 5975:2019
- Concrete placement in confined pin excavations
- Ground anchor installation and proof load testing
- Grouting operations — pressure limits, injection sequences, and grout takes
- Third-party property protection and neighbour notification procedures
Regulatory Framework
- CDM 2015 — construction phase management and design coordination
- BS 8004:2015 — code of practice for foundations
- BS 5975:2019 — temporary works and shoring design
- Confined Spaces Regulations 1997 — for deep pin excavations
- Health and Safety at Work Act 1974 — general duties
Frequently Asked Questions
- What is the biggest risk in underpinning?
- Structural collapse of the building being underpinned. Sequential bay excavation — typically no more than one-third of any wall length at one time — is essential. The structural engineer’s approved sequence must be followed exactly and no substitutions made without re-approval.
- When does underpinning require confined space procedures?
- Pin excavations may be classified as confined spaces under the Confined Spaces Regulations 1997 where access is restricted and atmospheric risks from ground gases exist. Gas monitoring, forced ventilation, and rescue arrangements must be in place.
- What structural monitoring is required during underpinning?
- Crack gauges or tell-tales on the structure being underpinned, settlement points on the wall, and in some cases inclinometers. Trigger and alert levels must be defined. Any trigger level being reached requires immediate work suspension.
- What temporary works designer is needed?
- A competent temporary works designer must produce a shoring design per BS 5975:2019. The design must cover loads, prop spacing, bearing stresses, and monitoring requirements. The RAMS should reference the specific design and its issue revision.
- How should neighbours be protected?
- A pre-condition survey of adjacent properties should be carried out before work starts and documented with photographs. Monitoring points should be installed on neighbouring structures and trigger levels set at agreed thresholds.