Wire & Wire Products (L) Ltd Selangor

Hollow Core Slabs A hollow core slab, known as voided slab or hollow core plank, is a precast slab of pre-stressed concrete typically used in the construction of floors in multi- story apartment buildings. The slab has been especially popular in countries where the emphasis of home construction has been on precast concrete, including Northern Europe and socialist countries of Eastern Europe. Precast concrete popularity is linked with low-seismic zones and more economical constructions because of fast building assembly, lower self-weight (less material), etc. .

Precast Girders Most economical when span is not greater than 40m and when the site is free of traffic movement and is accessible to mobile cranes for tandem lifting. Precast girder launching is usually performed after midnight when the affected roads or expressways can be closed to traffic.

• SeriesPC

PC Bars are developed as the main reinforcement for manufacturing of PC Poles and Spun Piles. PC Bar is a material with chemical composition that is suitable for spot welding and is subjected to drawing, in the shape of spiral grooves, high frequency quenching and tempering to achieve the mechanical properties in accordance to JIS G3137.

Egg Shaped Digesters Egg shaped digesters are efficient waste water treatment plant where the digestion of sewerage is performed under anaerobic environment. Gas released from the anaerobic digestion will be collected and used as an alternative fuel source for the sewerage treatment plant. The walls of the digester are post-tensioned both in the longitudinal an circumferential directions.

Pre-Stressed Concrete Beams Pre- stressed concrete beams are beams in which the concrete is entirely in compression with tensile forces taken by steel tendons. These are fabricated to produce a compression more than the expected tension under loading conditions. High strength steel tendons are stretched while the beam is cast over them. Then, when the concrete has cured, the tendons are slowly released and the beam is immediately under eccentric axial loads. This eccentric loading creates an internal moment, and, in turn, increases the moment carrying capacity of the beam. They are commonly used on highway bridges.

In Situ Flat Slab Flat slab is generally the most economical slab system for column grids with aspect ratio of not more than 1.4, based on the average cost index in Singapore and other developing countries in South East Asia and South Asia. It has proven to be viable for buildings with spans of greater than 6.0m and becomes even more economical as the live load increases.