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    Award-winning ground investigations near Stonehenge

    Stonehenge is 3 km west of Amesbury in Wiltshire, south-west England, UK. This 5000-year-old Neolithic structure is both a British cultural icon and a UNESCO World Heritage site. However, the ancient structureโ€™s site is bisected by the A303 trunk road, the most direct route between the south-east and the west of England. English Heritage manages the prehistoric monument and the National Trust owns the surrounding land.

    In 2017, Highways England, English Heritage and the National Trust announced the route for upgrading the A303 near Stonehenge; this included engineering a twin-bore tunnel. The ยฃ2.4-billion scheme aims to alleviate the traffic-choked road by widening it into a dual carriageway near the Stonehenge site before it dips underground as a 3.3-km tunnel.

    Structural Soils, an RSK company, completed a high-quality ground investigation, including a novel approach to sampling the phosphatic chalk at the site. The data will help to minimise the risk from unexpected ground conditions during construction by increasing the understanding of the siteโ€™s structural and lithostratigraphical geology. Structural Soilsโ€™ engineers recovered intact phosphatic chalk cores, including fault-controlled, shallow marine transgressions and regressions, and significant lengths of uninterrupted core from the Newhaven Chalk Formation. Our drillers used a lowโ€‘aggressivity core bit and limited water use, which increased the quality and stability of the recovered material.

    It was crucial to identify where the phosphatic chalk had been deposited within the Newhaven Chalk Formation to aid developing a highly detailed structural geological model. We did this by using a team of very experienced geological rock-core loggers that identified flint and chert marker beds, ranging in thickness from <1 mm up to 0.5 m, and typical fossil assemblages. The detailed logging helped to confirm the geological model and aided in determining the fault-controlled shallow marine transgressions and regressions, which was aided by precise geologging of the boreholes.

    Using the data excavated by the Structural Soils team to build a 3D model of the proposed scheme, planners can make scientifically based judgements regarding building the tunnel. Owing to its outstanding work, Structural Soils won the 2020 Ground Engineering Award for the Ground Investigation Project of the Year, sharing the award with AECOM and Highways England.

    • Location: England
    • Client: Highways England
    • Project status: Completed
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    ๐Ÿ“ธ #selfiesonsite ๐Ÿคณ

    Hugh Neatherway from RSK Response on-site with the RSK Response tanker in Shoreham, UK, on a nice spring day!

    Want to join our team? View our latest opportunities ๐Ÿ‘‰ www.rskgroup.com/careers

    #RSKgroup #behindthescenes #meettheteam #RSKfamily #RSKonsite #construction #engineering #spring
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    ๐—ฃ๐—ฒ๐—ฑ๐—ผ๐—บ๐—ฒ๐˜๐—ฒ๐—ฟ ๐—–๐—ต๐—ฎ๐—น๐—น๐—ฒ๐—ป๐—ด๐—ฒ ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฎ: ๐—ฆ๐˜๐—ฒ๐—ฝ๐—ฝ๐—ถ๐—ป๐—ด ๐˜๐—ผ ๐˜€๐˜‚๐—ฐ๐—ฐ๐—ฒ๐˜€๐˜€ ๐—ถ๐—ป ๐˜„๐—ฒ๐—ฒ๐—ธ ๐Ÿฎ

    ๐Ÿšถ Our week one results are in and our RSK Group step count has just passed 79,085,394 steps!

    ๐Ÿ‘ Colleagues across the group share their progress and tips in our latest article in our story!

    ๐Ÿ’š Keep sharing your adventures on social media using the hashtag #RSKSteps

    #RSKGroup #wellbeing #health #walking #pedometer #steps #nature #landscape
    ...

    ๐Ÿ‘ท Did you know that the UK #construction industry contributes around 40% of the countryโ€™s total #carbonfootprint?

    ๐Ÿ“Œ Sarah Cook, Chartered Geologist and Associate Director of RSK company Leap Environmental Ltd, presented Leapโ€™s foundation carbon calculator in one of our latest webinars.

    ๐Ÿ—๏ธ This tool has been developed to consider embodied carbon associated with foundations and will enable developers to identify carbon costs and potential savings early in the #design process.

    Find out all about our past and future events in our story!

    #RSKEvents #RSKGroup #RSKfamily #sustainability #constructionindustry #building #carbonemissions #carboncalculator #co2
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    ๐Ÿ‘ Barcelona-based RSK company Amphos 21 is set to take part in one of the most extensive groundwater chemistry modelling projects that has ever been conducted.

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    ๐Ÿ“ธ @lewisjimmy83

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    ๐Ÿ’ก All-Energy 2022 starts Tomorrow!

    ๐Ÿค #RSKGroup will be exhibiting at the event, alongside two of our companies: Stephenson Halliday and Headland Archaeology (UK) Ltd

    ๐Ÿ“Œ Come visit us:
    ๐—ฅ๐—ฆ๐—ž ๐—š๐—ฟ๐—ผ๐˜‚๐—ฝ - Stand D60B
    ๐—ฆ๐˜๐—ฒ๐—ฝ๐—ต๐—ฒ๐—ป๐˜€๐—ผ๐—ป ๐—›๐—ฎ๐—น๐—น๐—ถ๐—ฑ๐—ฎ๐˜† - Stand H58
    ๐—›๐—ฒ๐—ฎ๐—ฑ๐—น๐—ฎ๐—ป๐—ฑ ๐—”๐—ฟ๐—ฐ๐—ต๐—ฎ๐—ฒ๐—ผ๐—น๐—ผ๐—ด๐˜† - Stand J61

    We would love to see you there!

    ๐Ÿ“… 11-12 May 2022
    ๐Ÿ“ SEC, Glasgow

    #RSKFamily #RSKevents #renewables #energy #renewableenergy #sustainability #enviroment #ecofriendly
    ...

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