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PRODUCT AND WHERE USED MANUFACTURER ALTERNATIVES CONSIDERED REASONS FOR FINAL CHOICE Roof covering for sports hall roof area only Kalzip (standing-seam) aluminium roof deck Composite material systems;

single-ply systems Highly flexible and durable qualities; natural on-site curvature; compatibility with structural deck below;

aesthetic appearance Roof deck 1.5mm-thick Hoesch TRP 200 perforated structural deck Other structural solutions;

purlin steel sections;

composite material systems Structural bracing strategy for primary roof structure;

provides lateral structural stability. Internal acoustic properties and aesthetic appearance Flat roof for first-floor sprint track ICB Evalastic-V polymerfaced EPDM warmroofing cover system Bitumen fibre; metal-based insulated systems by other manufacturers Performance requirements, installation process and aesthetic appearance of product; use in previous projects Roof-level fall-arrest system Kal-Safe Latchways system Fall-arrest systems by other manufacturers Performance requirements and compatibility with roof covering Rooflights Bespoke secret-fix extruded aluminium system by Duplus Domes Alternative rooflight types by other manufacturers Performance requirements - no visible external fixings; aesthetic appearance of product; use in previous projects Curtain walling for all elevations, metal panels, translucent glazing and associated ironmongery MC Trame thermally insulated system and aluminium framework by Technal Frameless glass systems by other manufacturers; steel fame systems Visual emphasis on horizontal elements across the curtain-wall facade; manufacturer's reputation; use in previous projects Translucent panel system for north and south elevations at first-floor levels (sprint track) Kalwall prefabricated translucent structural sandwich panel system by Stoakes Systems Alternative composite panel systems by other manufacturers; glazing solutions Allowance of natural light and ventilation into building at first-floor level; aesthetic appearance of product;

use in previous projects Main entrance doors Glazed sliding entrance door system and louvres by Dorma Alternative glazeddoor systems by other manufacturers Aesthetics, performance and compatibility with curtain-walling frame system; manufacturer's reputation and use in previous projects External doors - metal doors and louvres Metal door and louvres by Technal Visual and technical compatibility with curtain-walling frame system Terracotta blockwork for west, north and south elevations GIMA external clay terracotta modular blockwork by the NBS Group Alternative terracotta blockwork suppliers;

alternative facade materials;

brickwork Aesthetic and performance of terracotta; surface texture properties; high standards of stain resistance;

use of terracotta in previous projects.

Blockwork for external perimeter walls and internal partitions, with fixings, support and insulation Performance specification and paintquality blockwork to contractor's choice Alternative blockwork products by other suppliers;

plasterboard internal partition systems Thermal and sound-reduction qualities and robustness from a medium-density block Floor screed for internal areas where required Isocrete Standard K-levelling screed Alternative screed systems by other suppliers Fast-track installation system with rapid setting and drying qualities

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