Want to ensure your project – or purchase – is completely grounded and safe?
Trust the chartered structural engineers at TH Services!
Not many London builders retain chartered structural engineers on staff. We’re proud to! The TH Services
team includes structural engineers and architects, as well as specialised tradesmen -– all under one roof.
This delivers convenience and valuable versatility to our customers. It also benefits other London building
industry professionals such as builders, contractors, architects and designers.
Our goal is to offer customised engineering consultation for your existing and new build residential and commercial project.
It’s up to you how to get us involved, and in what capacity. We offer a complete structural design service, including
calculations and drawing submissions for building control. We can work from the architect or designer’s drawings,
or direct from the client's instructions.
Expert witness
As an adjunct service for our builder colleagues we often compile expert reports and evidence for construction litigation.
We also act as joint expert witness and are familiar with the CP Rules and giving evidence in Court.
Our services & approach
• Initial site visit to define scope of works
• Site survey of the property
• Produce structural plans from architectural plans provided or a dimension survey
• Structural design with each element calculated*
• Assessment of the impact of the local ground conditions
• Recognition of how different trees affect the soil
• Produce plans and details
• Compile and issue information for Part A of the building Regulations
• Help with the tender process (as requested, if builder is not TH Services)
• Visit site and inspect the works
*Our deliverables include engineering design philosophy, assumptions and design calculations for each element:
• Masonry
• Concrete
• Steel
• Timber
• Structural Glass
Structural calculations and drawings for:
• Industrial, commercial and domestic buildings
• Extensions and alterations
• Foundations and retaining walls
• Roof alterations and strengthening
• Retrospective Building Regulations regularisation
• Underpinning and foundation stabilisation
• Assessment of existing structural members
• Checking submissions for a Licence to Alter
Report surveys
• Pre-purchase surveys
• Mortgage surveys
• Feasibility reports for proposed alterations and extensions
• Party Wall reports for adjoining owners
• Assessment of the load-carrying capacity of existing structures
Conditions & damage surveys
We investigate and report on:
• Structural defects and failures
• Cracks in structural concrete and masonry
• Subsidence, heave and other foundation movements
• Retaining wall movements and failures
• Accidents and personal injury in public places, buildings and on construction sites
• Drainage defects and flooding
• Sagging and spreading roofs
• Steel and reinforcement corrosion
• Excessive deflection and fracture of timber members
