Underpinner Employment Contract UK

Responsibilities reflected in the contract

• Set out and excavate underpinning bays in the issued sequence.
• Check services, existing foundations, ground and temporary support as work opens.
• Install shutters, reinforcement, dowels and concrete to approved details.
• Maintain safe restricted excavations and prevent adjacent bays being opened early.
• Take or support specified level, crack and movement-monitoring readings.
• Complete dry packing, load-transfer or curing stages as instructed.
• Record concealed conditions and stop for movement, instability or unexpected construction.

A realistic working scenario

Cracking movement is observed after a bay is excavated. The underpinner shores and secures the work, records readings and stops further excavation until the engineer attends.

Outputs to agree

• underpins completed in the designed sequence
• stable excavations and load-transfer details
• monitored and recorded structural work

Records and evidence

• Pin layout and sequence.
• Excavation and ground condition.
• Reinforcement and concrete.
• Movement monitoring and engineer inspection.
• Work records.
• Handover notes.

Reporting relationship

Typically reports to Line Manager or Department Manager. Confirm the employer's actual reporting structure in the builder.

Authority and escalation

• The underpinner may construct one authorised stage at a time. Sequence change, extra excavation, unexpected foundation and movement response require structural-engineer approval.
• Obtain approval before committing expenditure, changing contractual commitments or making regulated or staffing decisions outside the assigned role.

Tools and systems

• Site records.
• Project systems.
• Risk assessment records.

Workplace context

• Construction sites, project offices, client sites and approved work locations.

Training and certification

• Complete employer-required health and safety training.

Contract priorities

• temporary stability
• restricted excavation
• structural monitoring
• concrete and sequence records

Information the employer should prepare

• the underpinning system, property, bay dimensions and sequence covered
• the occupied-premises, access, travel and working-hour arrangements
• the excavation, temporary-works, reinforcement and concreting competence required
• the shoring, tools, PPE, pumps and monitoring equipment provided
• the bay, ground, reinforcement, concrete and movement records required
• the service-location and emergency-stability procedures
• the structural engineer controlling sequence, discoveries and load transfer