The Hollow Block range is manufactured on modern automated plants and produced from specially selected materials, maintaining quality throughout.
All GROUP ONE products are manufactured under the quality procedures of BS EN ISO 9001 The high level of quality control exercised at all stages of production ensures compliance with (BS EN 771-3)
The blocks also satisfy the special category requirements as laid down in ASTM C 90, ASTM C129 & QCSThe raw materials used within the product are specially selected for their performance.
Hollow Blocks provides a complete range of products assisting the specifier to achieve the highest rating in construction, without requiring any change in construction technique.
Hollow Blocks is manufactured by the GROUP ONE compliance to environmental standard ISO14001 and quality assurance ISO 9001.
QCS conformity certificates apply only to certain products.
All concrete masonry units/blocks are in compliance with BS EN 771 3, ASTM C129 & ASTM C90 respectively.
Fire rating of concrete masonry units/blocks is determined in accordance with ACI 216.1
All Concrete masonry units (Blocks) are designed to achieve normalized compressive strength (fb) in accordance with Annex A of BS EN 772 1