As part of Network Rail’s 2017/18 programme to carry out repairs and refurbishment of existing structures, MHB Consultants Ltd. was appointed as designer by Taziker Industrial to undertake the engineering design of the works on UB 162/051 River Ayr Viaduct, which crosses River Ayr in Ayr town centre.
The works included undertaking condition surveys of the existing cast iron walkway and masonry before developing repairs to both. To assist in determining repairs for the walkway, MHB Consultants undertook 3D finite element analysis to determine extents of metalwork repairs, designed the replacement concrete deck units and assisted Taziker Industrial in developing a safe construction methodology to implement the repairs.
All works were carried out without the need for disruption to rail traffic.
Read more information about the project from Network Rail:
MHB Consultants were recently commissioned by ABLE UK to carry out the design of three culverts at their Marine Energy Park at Killinghome, South Humberside. The park will provide a port facility for the Renewable Energy Sector, particularly Offshore Wind and covers an area of around 900 acres and features over 1,300m of new deep-water quays. The culverts are necessary to convey two watercourses across the site as part of the overall development plan which involves upfilling the site with rockfill and installing various new access roadways.
The culverts comprise of precast reinforced concrete boxes of up to 4m span. Twin box culverts were used for the largest drainage channels. The structural design accommodates full railway and highway loadings as well as loads from self propelled modular transporters used to transport wind turbine components across the site.
MHB services included topographical surveys, site investigation design/ interpretation and full structural design of the culverts and wing walls. MHB are also responsible for preparation of railway design documentation and provision of Principal Designer Services.
Construction of the first culvert was recently been completed with some photographs of the structure below.
Photos courtesy of ABLE UK
The Edinburgh Glasgow Improvement Programme (EGIP) is a comprehensive package of improvements to Scotland's railway infrastructure. A Scottish Government priority, the EGIP is being delivered by Network Rail and includes modernisation and upgrades to key junctions and infrastructure as well as widespread electrification of the Scottish rail network, including the main line between Edinburgh and Glasgow and to Stirling and Dunblane.
As part of the Stirling/Dunblane/Alloa Electrification Works, Kerse Road over the Scottish Central Mainline is to be replaced. MHB have been involved in the temporary works designs to facilitate the removal of the existing bridge and the installation of the proposed bridge.
We have designed the following;
With more designs being carried out over the next few months as part of the on-going improvement project.
We were recently commissioned by George Leslie to carry out internal and external surveys of water towers in and around the Glasgow area. The towers are owned and operated by Scottish Water and located at;
The towers are circular reinforced concrete structures and a mix of visual, topographical and laser scanning surveys were carried out. The project is ongoing, however preliminary output from the laser scanning at Bearyard is shown below. The internal and external surfaces of the towers were scanned to provide a full 3D model of the structure and any defects noted. More to follow……..
Congratulations to Lucie Killen on her promotion from Graduate Engineer to Engineer.
Lucie started with MHB in April 2016 and in the last two years has grown her technical ability and commercial awareness. Lucie's duties broadly comprises of technical work on Civil and Geotechnical projects, and also undertaking topographical surveys and site visits.
She has managed her projects technically and financially and latterly developed good relationships with clients, who now come to her directly. Lucie has also managed the work of others including our summer placement students.
Well done Lucie!
We are delighted to announce that we have been shortlisted as a finalist for the 2018 Ground Engineering Awards in the " UK Project with a Geotechnical Value of up to £1M category". This is for our work on the Aberdeen Western Peripheral Route - Sheet Pile Retaining Wall for Bridge on A90 at Stonehaven.
Thanks to the teams at AWPR, Albion Drilling, LB Piling and Hewson for your contribution to a great job !
Full details of the job can be found here .
We are currently receiving graduate applications for bridges, civil and geotechnical engineering positions.
Please apply with CV and cover letter to firstname.lastname@example.org before 31/05/2018.
We're delighted to announce that MHB Consultants has two new directors:
Fergus Aitchison has been promoted to Director, effective January 2018, in recognition of his contribution to MHB since joining in January 2015. He currently leads a team of eight engineers who specialise in the design of bridge replacement and refurbishment projects in the rail and roads sectors.
Duncan Sooman has joined MHB as a Non-Executive Director in January 2018. Duncan is a career railway civil engineer with extensive experience of all aspects of railway track and civil engineering having held very senior positions in British Rail, Railtrack and Network Rail. He was Head of Engineering for Network Rail, Infrastructure Projects, Scotland & NE until 2014 when he began working as an Independent Consultant to the Rail Industry. He brings a wealth of knowledge and experience to MHB which will be invaluable as we continue to expand.
MHB Consultants has again maintained a five star grading following our annual
RISQS audit. That we have reaffirmed the five star status is a real testament to the on-going dedication, passion and hard work of our team. Well done all!
SHEET PILE RETENTION STRUCTURES ON A90 TRUNK ROAD, ABERDEEN WESTERN PERIPHERAL ROUTE/ BALMEDIE –TIPPERTY
MHB Consultants recently carried out a temporary works design associated with a replacement bridge carrying the A90 trunk road over the B979 Netherley Road, as part of the Aberdeen Western Peripheral Route/Balmedie-Tipperty (AWPR/B-T) project.
The existing reinforced concrete structure was to be replaced on a similar footprint, but with a wider span over the Netherley Road below to help form the new Stonehaven Junction. Another key project requirement was for the A90 to remain open to traffic in both directions throughout the works. To facilitate this, an anchored sheet pile retention structure was required to allow the existing bridge to be cut longitudinally, demolished sequentially and rebuilt in two halves. The retained height was up to 9.8m and the traffic loadings imposed resulted in a requirement to use heavy Larssen 605 steel sheet piles with three rows of waling beams with ground anchors.
Close liaison was required with the New Works Contractor, AWPR Construction Joint Venture, and our client, Albion Drilling, to ensure that the construction sequence was carefully thought through, and stability was maintained at each stage of the works.
The Phase 1 works (southbound closure) required 515kN working load ground anchors (type 75/53 by Ischebeck Titian) angled downwards at 45 degrees and terminated 4m into the sedimentary bedrock. For the Phase 2 works (northbound closure), the sheet pile wall was restrained by the use of an anchor wall embedded in compacted granular fill forming the new road embankment.
The sheet piling works were installed by LB Foundations with Albion Drilling carrying out the drilling and anchoring works. The temporary works were completed in October 2017.
The AWPR/B-T project is being delivered by Transport Scotland in partnership with Aberdeen City Council and Aberdeenshire Council. Aberdeen Roads Limited was awarded the contract to build the AWPR/B-T in December 2014 and has appointed the AWPR Construction Joint Venture, comprising Balfour Beatty, Carillion and Galliford Try, as the New Works Contractor to build the 58km road.
When complete, the AWPR/B-T will help reduce congestion, cut journey times, improve safety and lower pollution in Aberdeen City Centre. It will also enable local authorities to develop public transport solutions.
Photos at key stages of the construction are shown below (courtesy of AWPR Construction Joint Venture)