T-REX S 38

Description

The “T-REX / S 38” pre-formed shells are elements made of a calcium silicate based mixture, suitable for the fire protection of steel tie rods. They consist of a calcium silicate core with a thickness of 38 mm and a 0,25 mm thick galvanised steel sheet facing, 1000 mm long. The turnbuckle protection is made with a similar element 600 mm long. The insulation and the galvanised steel sheet facing are supplied separately in order to facilitate installation operations. The “T-REX / S 38” pre-formed shells prevent the temperature of the steel tie rods from rising, keeping it below 350°C, and can therefore be applied under any load condition. Tests were carried out both on tie rods with a diameter of 16 mm and on tie rods with a diameter of 30 mm, allowing interpolation of the data. Extensions to diameters up to 35 mm are possible. The summary table below shows the tie rod elongations as a function of the critical temperature and of the fire resistance classifications provided by the “T-REX / S 38” pre-formed shells.

Technical characteristics

Application and installation

Slightly open the metal cladding sheet and insert the two half-shells with staggered joints (>10 cm). Tighten the metal casing and drive the self-drilling screws at 200 mm centres into the pre-drilled holes. Continue in the same way, maintaining the stagger of the half-shells and providing a slight overlap of the metal casing with the previous shell.