TECHNICAL SPECIFICATIONS Owner: Lansdowne Road Development Company.Architect: PopulousGen. Contractor: J. SISK & SON LtdCapacity: 51,700 seatsDescription: structural framing for the roof over stands essentially composed of a “horseshoe” shaped primary truss supported by secondary and tertiary trusses from a perimeter edge truss bearing onto the reinforced concrete bowl. All trusses were fabricated from hot & cold rolled tubular sections.