City of Manchester stadium
Strengthening was required to the pre-cast concrete terrace beams where flexural capacity of the terrace beams required increasing due to casting problems with the existing steel reinforcing bar positions.
Access was restricted due to the construction of the new stadium and the weight of the new terrace already in place.
Four high strength carbon fibre plates were installed using a combination of the popular 120mm and 80mm wide webertec force carbon plate, grade 200 kN/mm2 modulus and webertec EP structural adhesive. These were applied by the specialist contractor to the soffit of the pre-cast terrace beams.
The carbon fibre plate was applied after installing temporary propping to jack the terrace units off the beam and then preparing the surface by grit blasting. The carbon fibre plate was delivered to the specialist contractor in cut lengths ready for installation. The terrace units were then lowered back down onto the beam once the epoxy resin adhesive had fully cured.
High-performance carbon fibre plate reinforcement for structural strengthening