Piling & Foundations RAMS: A Complete UK Guide

Table of Contents

• Why Piling and Foundation RAMS Matter
• Types of Piling and Foundation Works Covered
• Key Hazards in Piling Operations
• Ground Investigation and Pre-Works Requirements
• Contaminated Ground Controls
• What Your Piling RAMS Must Include
• Frequently Asked Questions
• Next Steps

Why Piling and Foundation RAMS Matter

Piling and foundation works are among the most technically complex and hazardous operations in UK construction. Working below ground level, in close proximity to heavy plant, and often in the presence of contaminated ground or groundwater, piling contractors face a range of risks that must be systematically addressed in a comprehensive RAMS.

Under the Construction (Design and Management) Regulations 2015 (CDM 2015), piling contractors must produce RAMS covering every significant stage of their works before starting on site. Principal contractors routinely require detailed piling RAMS as a condition of mobilisation. This guide sets out what those documents need to cover.

For an introduction to RAMS in UK construction generally, see our guide on what RAMS means and why they are legally required.

Types of Piling and Foundation Works Covered

This guide covers the main piling and foundation methods used on UK construction projects:

• Continuous Flight Auger (CFA) piling — A single-pass bored piling technique where concrete is pumped through the hollow auger stem as it is withdrawn.
• Rotary bored piling — Larger-diameter bored piles using a rotary rig with temporary or permanent casing.
• Driven steel piles — H-piles, sheet piles, and tube piles installed by impact hammering or vibration.
• Mini piling — Smaller diameter piles installed by rotary rigs in restricted access areas.
• Pad and strip foundations — Traditional shallow reinforced concrete foundations in excavated trenches.
• Raft foundations — Reinforced concrete slabs spanning the entire building footprint, often used on poor ground.

Each method has its own specific risk profile. Your RAMS must be tailored to the specific piling method being used — a generic document that does not reflect the actual technique will be rejected.

Key Hazards in Piling Operations

Your risk assessment must identify and evaluate all hazards relevant to your specific piling method. The following are common across most piling operations:

• Overturning of piling rig — Piling rigs are top-heavy and can overturn on soft or uneven ground. Ground bearing capacity must be assessed and rig positioning planned accordingly.
• Collision with plant — The exclusion zone around operating piling rigs must be enforced. No person should enter the exclusion zone while the rig is operating.
• Contact with underground services — Cables, gas mains, water mains, and telecoms infrastructure are all potential hazards. A full service survey (including radar scanning) is required before any piling commences.
• Noise and vibration — Piling operations — especially driven piles — generate high levels of noise and vibration. Operatives may be exposed to levels above the Upper Exposure Action Value. Hearing protection, rotation of workers, and vibration monitoring are required controls.
• Manual handling of reinforcement cages — Heavy reinforcement cages require crane assistance and controlled landing procedures.
• Grout and concrete wash-out — Wet concrete and grout are highly alkaline and can cause chemical burns. Appropriate PPE (waterproof gloves, eye protection) and wash facilities must be provided.
• Contaminated ground and groundwater — Many piling sites involve contaminated land. Arisings from bored piles may be hazardous. This is addressed in detail below.
• Surcharging and ground instability — Piling operations can cause surcharge effects on adjacent structures and services. A pre-works condition survey and monitoring scheme may be required.

Ground Investigation and Pre-Works Requirements

Before piling can begin, a comprehensive ground investigation must have been carried out. Your RAMS should confirm that the following pre-works activities have been completed:

• Ground investigation report (GIR) — A geotechnical assessment confirming ground conditions, bearing capacities, and groundwater levels. This is typically commissioned by the client or principal contractor.
• Underground service searches — Full records of all buried services obtained from utility companies, supplemented by radar (GPR) scanning of the piling area. All services must be plotted and marked on the ground before any piling commences.
• Contamination assessment — A Phase 1 desk study and, where applicable, Phase 2 site investigation to identify any contaminated ground. See section below on contaminated ground controls.
• Surcharge survey — Where piling is within 3 pile diameters of an existing structure or service, a pre-works condition survey of that structure must be carried out.
• Noise and vibration baseline monitoring — For driven piling adjacent to sensitive receptors, baseline monitoring must be established before works start.

Contaminated Ground Controls

Piling operations on contaminated land require specific controls that must be documented in your RAMS:

• COSHH assessment for contaminated arisings — Spoil from piling in contaminated ground is a hazardous substance. Your COSHH assessment must identify the contaminants present (from the ground investigation), assess the exposure risk, and specify controls including respiratory protection (minimum FFP2 dust mask, FFP3 or supplied air where volatile organic compounds or heavy metals are present), disposable coveralls, and nitrile gloves.
• Waste classification and disposal — Contaminated arisings are classified as hazardous waste under the Environmental Permitting Regulations 2016. They must be segregated, characterised, and disposed of via a licensed hazardous waste carrier to an appropriately permitted facility. A waste transfer note and hazardous waste consignment note must be retained.
• Decontamination facilities — Operatives working in contaminated ground require hand-washing facilities, and a decontamination procedure must be in place before leaving the work area.
• Groundwater management — Where dewatering is required, groundwater quality must be assessed before disposal. Contaminated groundwater cannot be discharged to surface water drains without an Environment Agency (EA) permit.

What Your Piling RAMS Must Include

A compliant piling RAMS should cover all of the following sections:

• Project details and scope of piling works (type, number, and dimensions of piles)
• Reference to the ground investigation report and service search records
• Piling rig specification and ground bearing capacity assessment
• Exclusion zone arrangements and enforcement
• Sequence of piling operations and any constraints on working sequence
• Noise and vibration management plan (including monitoring for driven piles)
• Contaminated ground controls and COSHH assessment reference
• Concrete and reinforcement procedures
• Emergency procedures including rig overturning response
• Competency requirements (CPCS tickets for rig operators, SMSTS for supervisors)

You can generate a complete RAMS for piling and foundation works using the RAMS AI piling template.

Frequently Asked Questions

Do I need CDM F10 notification for piling works only?

The F10 notification obligation is based on the overall project, not individual packages. If the project meets the notification thresholds (over 30 working days with more than 20 workers simultaneously, or over 500 person-days), the project must be notified. As a piling subcontractor, you need to confirm with the principal contractor that the project has been notified if it meets these thresholds.

What CPCS cards are required for piling rig operators?

Piling rig operators should hold a CPCS card for the relevant plant category — typically CPCS A36 (Piling Rig — Rotary) or CPCS A37 (Piling Rig — Percussive). The specific card required depends on the rig type. All cards should be current and presented to the principal contractor before operatives start work.

How do I handle unexpected contamination found during piling?

Your RAMS should include a protocol for unexpected contamination: stop work immediately, inform the principal contractor and client, obtain guidance from the geotechnical engineer and environmental consultant before proceeding, and document the discovery with photographs and GPS coordinates. Do not attempt to proceed until the contamination has been assessed and appropriate controls confirmed.

Next Steps

Browse all trade RAMS templates on the RAMS AI trade hub — covering 22 specialist construction trades.

Piling RAMS require specific technical knowledge of ground conditions, plant operations, and environmental legislation. RAMS AI provides a dedicated piling and foundation RAMS template that covers all the requirements above and is formatted for submission to principal contractors.