HS2 - Category III Check Rail of Scheme Design for C2 and C3 CLIENT: Arcadis Consulting (UK) Ltd Project overview: END CLIENT: This project concerns the Category III check of the Scheme Design for Main Works Eiffage Genie Civil; Contracts C2 and C3 of HS2 Phase 1, which is a high-speed rail link between London Euston and Birmingham. Kier Infrastructure and Overseas Ltd; HS2 Ltd Contract C2 consists of the section between North Portal of Chiltern Tunnels and Brackley. COLLABORATING FIRMS: Jacobs UK Ltd Contract C3 consists of the section from Brackley to Long Itchington Wood Green Tunnel South Portal. LOCATION: UK Rendel’s services: CAPEX: £965 million Rendel was appointed to provide the Category III independent design check services of primary permanent work assets and components within the scope of FEES: £2.25 million Lots C2 and C3. DATES: 2019-2020 Rendel is checking the following structures: SERVICES: Cat 3 check of • Four composite viaducts Scheme Design 1. Wendover Dean Viaduct - Steel and concrete double composite viaduct; 10 spans and total length of 450m 2. Small Dean Viaduct - Steel and concrete double composite viaduct; 6 spans and total length of 295m 3. Turweston Viaduct - Weathering steel-concrete double composite box viaduct; 2 spans and total length of 80m 4. Lower Thorpe Viaduct - Weathering steel-concrete single composite multi- girder viaduct; 7spans and total length of 210m HS2 - Category III Check Rail of Scheme Design for C2 and C3 Rendel’s services continued: • Two pre-stressed viaducts (450m-long Wendover Dean and 315m-long Small Dean) 1. Lower Radbourne South Viaduct - Prestressed concrete viaduct; 5 spans and total length of 100m 2. Edgcote Viaduct - Prestressed concrete viaduct; 21 spans and total length of 515m • Two ‘green tunnels’ 1. Chipping Warden cut and cover tunnel - Precast concrete Matiere twin arch, maximum cover 16m, total length of 2400m 2. Wendover Green cut and cover tunnel - Prestressed Matiere twin arch, total length of 1425m • Seven truss bridges 1. 6No. 56m single span weathering steel Vierendeel trusses 2. 1No. 3 span weathering steel trusses with central span 56m. Total length 96m • Two pre-stressed overbridges 1. Bridleway AX16 Accommodation Overbridge: 3-span, pre-stressed bridge with total length 93m 2. Footpath SM101 Green Overbridge - 3-span pre-stressed bridge with total length 69m • One composite overbridge - Perry Hill Overbridge - 2-span 92m skewed multi- girder steel composite Overbridge with total length 95m • Seven underbridges 1. 4No. single span precast concrete box Underbridges. Lengths varying between 4- 9m 2. 3No. single span in-situ portal Underbridge. Lengths varying between 4- 13m • Six earthworks 1. Small Dean North Embankment - 733m embankment, max height 12.9m 2. Small Dean South Embankment - 1026m embankment, max height 9.5m 3. Boddington Cutting - 2045m cutting, max height 14.3m 4. Oxford Canal North Embankment - 1203m embankment, max height 8m 5. Ladbroke Cutting - 2241m cutting, max height 28.4m 6. Brackley South Cutting - 1960m cutting, max height 18.6m.