Flat Slab System | Post Tensioning | Prestressing

MOMENT Flat Slab System

MOMENTPost Tensioning (MPT) System is designed and tested to meet stringent standards. The range of buildings and civil engineering applications includes:
• Commercial and residential high rise
• Retails shopping centers
• Load transfer structures
• Slabs on grade
• Silos and reservoirs
• Bridges
• Ground anchoring and earth retaining

MOMENT Flat Slab System is normally adopted for bonded tendon. The strands are individually gripped in one triangle flat anchor head unit and transmit their pre-stressing forces by means of flat type anchor plate casting unit. The strands are stressed individually by means of a mono strand jack. The strands are contained in one flat duct (duct size: 20mm x 70mm) which is made of corrugated galvanized metal.

To ensure corrosion protection and to give adequate bond strength, the tendons are filled with suitable cement grout mix after complete stressing of the strands. Facilitating of concrete placing due to the absence of tendons in the webs, and ease for placing tendons.

MOMENT Flat Slab System

MOMENTFlat Slab System significantly reduces the amount of concrete and reinforcing steel required.

MOMENT Post Tensioning Dead End Anchorage

Stressing of a tendon from one end only, to which the load is applied.

Barrel and Wedges

Barrel and wedges are the two components required to hold the tendons or pretensioning wires tightly when it is pulled out for inducing tensile force. The Barrel will have tampered finish into which the wedges will get locked as the force increased.

Barrel: A cylindrical component fitted over a single prestressing strand at an anchorage and that transfers the strand force to the anchor via tapered wedges located within its internal conical recess. A set of Barrel can be used with a mono-strand stressed tendon as an alternative to an anchor block.

Wedges: Tapered high-strength steel components with internal serrations that grip and hold prestressing strands during and after tensioning. Three parts of wedges are placed around a strand and compress onto it as they are drawn into conical recesses in the anchorage during jack retraction.