Calvert Green Retaining Wall Capping Beam 
Scheme details 
Client 
Kier Transportation Ltd 
 
JOS Value 
£1.17M 
 
Time 
2024 – 26 weeks 
 
Sectors 
Specialist Industries (HS2) 
 
Purpose 
Capping beam to 595m long secant piled retaining wall providing support to new HS2 trace cutting 
Key Data 
595m long 1.5m wide x 1.7m high capping beam poured in 30m sections 
1,520m3 concrete poured 
380t reinforcement tied 
2050m2 of formwork 
Additional works to pre-cast 60 No. kentledge blocks for parapet works 
JOS Supply 
Labour 
Temporary Materials 
Plant (including lifting) 
 
 
 
JOS Worked with Kier Transportation (formerly Buckingham Group) to develop the programme of works and shuttering design to deliver the capping beam works in 24 weeks through the summer and autumn of 2024. A significant amount of time was spent in advance of the scheme commencing preparing and gaining approval of the temporary works designs and lift plans which allowed the scheme to progress smoothly. 
 
JOS carried out additional works to pre-cast 60 No. kentledge blocks which will ultimately be used as to prop the pre-cast parapets required for all of the HS2 structures in the area. We utilised down time in the programme to carry out these works whilst still maintaining the original programme duration. 
 
Please pass on my thanks to the full team for pushing and getting these pours completed to our tight programme. I know it was a challenge, but your efforts are much appreciated. 
 
Seam McManamon - KTL - Senior Project Manager  
 
Tagged as: HS2, Rail, Retaining Walls
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