Core Valley Lines - Rhiwbina Station Platform Sub-Structure

Description

The Rhiwbina Station Platform Sub-Structure is located at CRY 1m 78ch, OS Map Reference ST 158809.Rhiwbina Station Platform Sub-Structure is a single platform station with a single track. The platform construction includes precast reinforced concrete units for 34 No. bays. Access is achieved from the Eastern end (L/M) via an access ramp. A waiting area comprises 3 No. bays adjacent to bay No. 6, 7 and 8 from L/M end and is located to the D/S of the platform.The platform articulation includes two precast reinforced concrete slabs per bay. The slabs are in-turn supported by reinforced concrete portal frames on combined footings. The portal frames are braced by h-shaped reinforced concrete cross members at either end of the portal frames. The waiting area deck slab comprises transverse filler beams supported on 3 pairs of longitudinal steel beams (rails). Longitudinal beams are supported on vertical supports.A condition assessment report identified spalling with exposed corroded reinforcement, fractures with rust staining and significant section loss to fixings.The works comprise of;The repair of defects in sub-structure and slabs,Installation of debris screens, andPlatform surfacing and strengthening.AIW seek to procure a Build only Subcontractor under and NEC4 Option A Contract to undertake the repair worksNOTE: To register your interest in this notice and obtain any additional information please visit the Sell2Wales Web Site at https://www.sell2wales.gov.wales/Search/Search_Switch.aspx?ID=158546.The buyer has indicated that it will accept electronic responses to this notice via the Postbox facility. A user guide is available at https://www.sell2wales.gov.wales/sitehelp/help_guides.aspx.Suppliers are advised to allow adequate time for uploading documents and to dispatch the electronic response well in advance of the closing time to avoid any last minute problems. (WA Ref:158546)The buyer considers that this contract is suitable for consortia bidding.