Substructure Repair

Diagnosis, Design & Installation
Underpinning
Mini-Piling
Associated Masonry Repairs

If after conducting site investigations and a period of monitoring we find that the movement is progressive, our engineer may specify remedial works to the substructure of the building in the form of traditional underpinning techniques, such as mass or partial concrete underpinning, or the installation of mini-piles.

We consider the underpinning of foundations to be a last resort given the associated expense and disruption it causes to the building, its services and occupants. However, the formation of composite masonry beams in the walls of the building using Bersche-Rolt masonry reinforcement can reduce the requirement for continuous mass concrete underpinning or beam and pier underpinning systems, reducing the inconvenience caused.

All substructure repair schemes are installed by our highly trained workforce and will often form part of an overall repair scheme that also includes repairs to the superstructure.

Features:

  • Corrosion resistant high tensile Grade 304 or 316 stainless steel reinforcing bars (1.4301 to BS EN 10088)
  • Reinforcement with a characteristic strength of 500 Mpa (BS 6744:2016)
  • Bars are solid in cross section with a greater cross-sectional area
  • Fixed locating spacers hold the bars centrally in the groove or hole
  • Bars embedded in cementitious, shrinkage compensated, thixotropic bonding mortar with a characteristic strength of 40 MPa
  • Full bridge circumference applications
  • Bars are available in any length and a wide range of diameters from 3 to 24 mm
  • Independently tested by The University of Bradford

Benefits:

  • Significant cost and time savings
  • Reduces downtime and minimal interruption to traffic and services
  • Concealed subsurface installation leaves appearance of structure virtually unaltered
  • Increases load capacity to comply with modern standards with no significant increase in the overall weight of the structure
  • Enables structure to move as a complete unit
  • Whole bridge applications accommodate imposed dynamic and static loads as well as the effects of settlement, thermal and moisture induced movement
  • Superior tensile performance
  • Excellent bond with masonry
  • Ten year insurance backed guarantees as standard
CHAS
RISQS
Constructionline
Concrete Repair Association
INCA
ISO 9001
ISO 14001