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Collaborative Planning
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Visual Performance Management Benefits
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Project Summary
Lean Project Name
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Unique ID
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Lean Project Description
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Lean Project Summary
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Change in embankment design to improve programme duration and reduce costs
Lean Project Benefits Summary
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Reduce overall installation costs and impact on critical path Efficiency savings £3,560,745.40 (Reference 5102)
Roads Period Efficiency Reported
RP1 2015-2020
RP2 2020-2025
RP3 2025-2030
N/A
Efficiency Value Assured
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£
Efficiency Register ID
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Lean Construction Development Programme (LCDP) Project
Lean Construction Development Programme (LCDP) Project
No
Lean Construction Development Programme (LCDP) Project
Yes
Supplier
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Contact Email
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Stakeholders involved in project
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Stakeholders Involved - Other
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Problem Solving Strategy (DMAICT)
Define
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As part of the scheme the existing bridge at Allerdene is to be rebuilt and repositioned. The new structure requires associated earthwork embankments to be constructed and this put pressure on the critical path, with the activity accounting for approximately 220 days on the programme.
Measure
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The original (approved) design incorporated Rigid Inclusion Piles (RIP's) - these are solid concrete piles designed to spread the load of the embankment over the underlying strata. (Some / All) of these RIPs were situated underneath the existing Northbound carriageway of the A1. Programme reviewed to show original plan of 44 weeks (220 days) to carry out the works based on the original design.
Analyse
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As part the collaborative mapping, the CJP team challenged the programme and looked for opportunity to reduce the programme duration. The original design was challenged by carrying out further detailed analysis of the groundworks model and settlement criteria. We concluded that the RIPs could be removed with some amendment to the Load Transfer Platform (LTP) and the position of the tension control of the basal reinforcement.
Improve
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The RIP's have been removed from the design and replaced with amended LTP design to enabled equivalent reinforcement. Additionally, a new anchor trench and anchor blocks have been provided as part of the LTP installation to support to the embankment. The major cost saving results from a 55 day saving to the critical path programme between 7th August and 20th October 2023.
Control
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Further detailed analysis were carried out on the groundworks model and settlement criteria to support the alternative design method for constructing the Allerdene Embankment.
Transfer
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Although relatively unique to the A1B2CH project, this efficiency has been uploaded and assured by NH to the Digital Efficiency Register. Learning transferred - promoting the use of collaborative planning and visual management.
What Lean Tools & Methodologies were used for your Lean Project?
If Other, please specify
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Other Project Benefits
Meeting the needs of all users
Meeting the needs of all users - Other
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Improving safety, health & wellbeing for all
Improving safety, health & wellbeing for all-Other
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Delivering better environmental outcomes
Delivering better environmental outcomes - Other
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Sustain a well-maintained and resilient network
Sustain well-maintained & resilient network- Other
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Providing fast and reliable journeys
Providing fast and reliable journeys - Other
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Achieve efficient delivery
Achieve efficient delivery - Other
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Project Detail
National Highways Directorates involved in project
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Division
Scheme Name
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Scheme PIN
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Was a Departure Required?
Was a Departure Required?
No
Was a Departure Required?
Yes
DAS Reference
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