TLB Terwa Loop Box
The Terwa Loop Box (TLB) is a system for connecting prefab concrete elements such as walls and columns in a simple and quick way.
Terwa loop boxes are designed to transfer vertical shear forces, transverse shear forces, tensile forces, and their combinations in wall to wall or wall to column connections. They are used for assembling the precast concrete elements.
This system consists of a flexible cable loop mounted inside a steel box. The wire rope loop is made from a high strength cable of which loose ends are pressed into a steel sleeve.
These systems are used for joints of walls extension, corner joints or wall-ceiling joints. In this way, joints are made at low cost, easily and safely.
We recommend using high strength, self-compacting mortar with very good flow qualities is recommended for casting the recess of joints. The connection can be assumed as load bearing only after grouting has reached the required strength. Terwa loop boxes are designed to transfer predominantly static loads and can be used in indoor or outdoor condition. The steel box and the wire cable are galvanised.
Main advantages of the Terwa Loop Box:
- Wide range of application with a small range of sizes
- Using steel cable instead of bent reinforcing bars which require unbending when mounting reduces installation time
- Greater adaptability of concrete elements
- Rust protection – all metal components of the TLB system are galvanised
- Reduced risk of accidents on site - without protruding reinforcement bars
- Easily fixed to the formwork - with nails, magnet or adhesive according to the type of shuttering
- Easy installation between mesh reinforcements due to small size steel box
- The design of steel box prevents changing shape during use