DEPOT BUILDING – GOLD COAST LIGHT RAIL
Product: GCLR Depot Administration Building
Application: Gold Coast Light Rail
Sectors: Infrastructure; Government
Location: Queensland
Forged In Steel worked with GoldlinQ and took part in the construction and refurbishment projects for the Gold Coast Light Rail. We provided the structural steelworks for the New Depot Administration Building and the Green Room Balcony and locker room extension in the existing Depot building. This includes the supply and installation of all beams, columns, trusses, fixings, cleats, brackets, bolts, and on-site welding.
Following the typical steelworks and sections, the base plates are anchored on the concrete slab with Grade 4.5 nuts and washers. For the baseplate fixing at footing, the baseplate is encased in min. 150mm concrete below the floor level. Meanwhile, the typical flybraces to columns or rafters use 50x50x3 equal-angle steel welded to a universal beam and attached with M12 purlin bolts to cleat and purlin. Where there is obstruction to one side of the flybrace, 45x45x5 equal-angle steel is welded to the universal beam and attached with M12 purlin bolts to cleat and purlin.
The typical rafters have 10mm stiffener plates on each side of the universal beam or parallel flange channel. They are welded on the columns and secured with four M20 bolts. The floor beam splices use a parallel flange channel joined by web plates that are welded and bolted together.
Universal beams, columns, and parallel flange channels are attached to the beams with M20 bolts, with the flanges coped as required per specification. The splices are connected using web plates and M20 bolts on both sides and flange plates at the top and at the bottom. The flange plates are bolted on one end of the steel joint and welded on the other.
Equal-angle roof braces are attached to the square hollow sections with welded packer plate and bolt. Alternately, cleats are used in lieu of packer plates. The typical connections at bracing bays use stiffener plates on each side of the universal beam rafter. The universal beam rafter is bolted on the column, while the connection to the square or rectangle hollow section roof member and diagonal brace use a cleat plate with stiffener on the far side or the side facing the wall sheeting. The typical outrigger consists of a universal beam joined with the square hollow section steel with full penetration buttweld.
All the materials used for the project are Grade 250 hot rolled plates in compliance with AS/NZS 3678:2011; Grade 300 universal beams, universal columns, parallel flange channel, tapered flange channel, equal angles, unequal angles, and flats—all in compliance with AS/NZS 3679.1:2010; Grade 300 welded beams and welded columns in compliance with AS/NZS 3679.2:2010; and Grade 350 rectangle hollow sections, square hollow sections, and circular hollow sections in compliance with AS 1163:2009. Grade 250 steel is known for their strength and formability, while Grade 300 steel is resistant to corrosion and rust.
All welds are done in accordance with AS/NZS 1554.1:2011, which defines the standards for the welding of steel constructions, as well as AS/NZS 1554.2:2003, or the requirements for the welding of steel studs to steel elements. As prescribed, all welds are 6mm continuous fillet weld and full penetration butt weld using E48XX and W50X welding consumables. The steel bolts, nuts, and washers to connect steel components are hot-dipped galvanised to protect from corrosion.
With our ISO 9001 certification, Forged In Steel is a specialist when it comes to delivering technical steel projects.