Covers for cable and/or utility shafts in tunnel structures, square design
Shaft cover is resistant to surface water, load-bearing, fireproof, impervious to smoke and designed for concreting in to fit flush with the ground
B 125 kN/D 400 kN in accordance with EN 124,
90 / 120 minute fire-rated – tested and certified
Materials and construction:
Frame and lid trough in stainless steel V2A-1.4301/ V4A-1.4571
Frame with reinforcement attached externally plus height adjustment, fire-insulated centre strut fitted to multi-section covers, lid pre-assembled to allow reinforcement to be inserted and for subsequent concrete in-fill, lid with frame secured using three-square brass bolts, resistant to surface water, frost and weather-resistant and heat-resistant seal made from silicone foam profile. Design variations: single-section covers and covers with two or more sections with centre struts.