M74 Motorway Completion - Scotland

• The M74 Completion scheme was a Design and Built Scheme and so design drawings were issued in packages to suit a compressed programme where the design and construction phases overlap

• Cat 3 Independent Design Check

• Used design codes: BS5400-4, BD37/01, BD21/01, TD19/06, BS6779 – 3 and 8500 -1

• Understood the principles of designing of RC concrete and prestressed concrete structures

• Used design software: SuperSTRESS and SAM 2000

• liaised with geotechnical team and Introduced to geotechnical design principles

Glasgow Rd Underbridge

A three-span, 86m long, semi-integral bridge. The bridge deck made of prestressed precast U12 beams and an in-situ RC slab.

I designed the following elements:•Pile caps•Piers and abutments •RC deck slab•Prestressed beams•Bearings for the abutments.

Farmeloan Rd Underbridge

A 58m long, three-span, integral bridge. The deck is of prestressed precast concrete Y7 beams and an in-situ RC slab.

I designed the following elements:•Created and analysed a 3D grillage model using Super STRESS •Piles and pile Caps•Abutments and piers•Prestressed beams•RC Deck Slab and RC Parapet•Diaphragm and Wing Walls.

Cambuslang Rd Underbridge

A 94.9m long, four-span, semi-integral bridge.The superstructure consists of prestressed Y6 beams and a cast in-situ RC deck.

I designed the following elements:•Piles and Pile Caps•Abutments and Piers•Prestressed beams•RC Deck Slab and RC Parapet.

An example of Checkers Comments Sheet

Salford Meadows International Footbridge Design CompetitionI took part in the international RIBA competition for the design of a new pedestrian bridge across the River Irwell led by Salford City Council.My team of 4 engineers developed a conceptual design of underslung cable truss bridge. Out of 203 submissions our design reached Stage 2, the short listed four submissions. The submission can still be viewed on RIBA Competition web site http://www.ribacompetitions.com/salfordmeadowsbridge/shortlist.html

Design activities:

•Attended 3 day Lusas training course•Undertaken an Initial dynamic analysis of behaviour of the structure to the moving and pulsating pedestrian load•I understood the basics of dynamic analysis.•The bridge designed to carry 5kN/m2 crowd loading.•The acceleration comfort criteria of the UK National Annex to Eurocode 1991-2

The following Engineering analysis work undertaken at competition stage.

I have created a 3D model of the bridge and completed preliminary static structural analysis at Stages 1 of the competition, considering all the relevant load effects.

At Stage 2, I have additionally completed a preliminary dynamic analysis of the main span. Several modes of the bridge had frequencies requiring further detailed consideration. For these, I have undertaken a detailed time-history analysis, which showed that the bridge deck accelerations satisfy the pedestrian comfort criteria.

Lancashire Bridge Assessment

• I have undertaken non intrusive Inspection For Assessment (dims, condition survey and covemeter scan for reinforcement location)

• I produced Site Inspections method statements

• Produced a 3D space frame model using SuperSTRESS

• Carried out full structural assessment of the RC portal frame bridge.

• Section capacity checked using hand calculation methods as well as “SKALE” design software.

• Example of 44t vehicle located on Portal 55 to gain Max Hogging moment.

• Bridge Assessment proved that the structure can stand on its own but it is not able to support any live loading including pedestrians.

•I have produced Assessment Report recommending demolition of the bridge.

•Shortly after the Report, Stockport Council decided to close the bridge for the traffic and soon after that the bridge has been demolished.

Marsh House Bridge

I have undertaken an initial hand calculation design of an abutment of a single leaf lifting bridge carrying Marsh House Lane over the disused St Helen’s Canal. The deck was hinged on the south side with hydraulic machinery in the designed box.   The box substructures consisted of reinforced concrete abutment founded on piles with reinforced concrete canal walls approaching the abutments on both sides.

An extract from my design calculation

Red Brook Footbridge Refurbishment

• Assessed the bridge in accordance with BS 5268 Part 2

• Produced Assessment Report

• Understood the principles of permissible stress design of timber structures,

• Understood different timber Strength and service classes

• Produced Design, Specification and Bill of Quantities for the bridge refurbishment

• The following loadings have been used during the design: 1.4kN/m load applied to the top 1800mm high parapet to TD 19/06; 5kN/m2 footway loading to BD 37/01 and 8.12kN point load to The British Horse Society Advice Note.

Specification and the Bill of Quantities

Dumvilles Brow Retaining Wall Strengthening

A hand sketch produced for the draughtsman

• Detailed design of strengthening of 3 No. masonry retaining walls supporting highways.

• Wall A (8.0m high) – designed as reinforced concrete retaining wall. Due to overturning and sliding instability the new wall was tied back to the existing masonry wall and down to the rock foundation

• Wall B (5.5m high) – designed as brick wall fixed at the top to the RC stair case and bottom to the bed rock. Also dowelled back in to the existing brick wall and to the new adjacent RC L-shape wall.

• Wall C (4.0m high) – designed an underpinning for the foundation of wall that showed signs of settlement. The underpinning in form of a series of pile caps cantilevering under the wall. Wall B anchored to the staircase slab with series of dowels.

• RC structures were designed using hand methods, however crack width and early thermal cracking were checked using Excel spreadsheets.

• Progress control during construction• Daily Site visits• Dealing with site queries• Producing clerk of works reports• Undertaking CDM compliance checks• Programme and quality control

Piccadilly Gardens Water Tank Replacement

• RC water tank design to BS EN 1992, 1997 and BD37/01– Hand calculations using Two-way slab, fixed along all edges,elastic analysis method. – Self check using 3D space frame model analysis (SuperSTRESS software).

• Coordination of information between disciplines• Design team management • Resource planning• Close cooperation with Principal Designer (CDM 2015)• Understood the relationship between engineers and draughtsmen team and how

to convey the information for good quality drawings• Tender package preparation and submission• Competitive tender evaluation• Value engineering exercise• Daily Site visits• Dealing with site queries• Programme, quality control and temporary works check against RAMS• Approved Invoices and Interim Applications• Precast Concrete Fabrication design calcs. and drawings check• Understood the relationship between engineers and the contractors and

subcontractors• Appreciated importance on temporary works and their impact of the

delivery/programme/design.

Hendham Vale Retaining wall Rebuild

• Produced the initial scheme design• Detailed design of mass concrete retaining wall and scour protection works• Coordination of information between disciplines• Design team management • Resource planning• Tender package preparation and submission• Competitive tender evaluation• Programme and quality control• Value engineering exercise• Understood the principles of design for mass concrete structures• Site supervision and dealing with Site Queries daily• Chairing Progress Meetings on site • Approved Invoices and Interim Applications• Reviewing Contractors RAMS

Harpurhey Rd Reservoir Retaining Wall refurbishment

• Produced Bill of Quantities for initial scheme pricing and budget request• Produced detailed design of water tight, sheet pile wall with RC pile

cap/walkway to BS EN 1993-5:2007 and BS EN 1992• Cooperated with external companies for economic design• Requested Ground investigation works (bore holes, chemical test for

hazardous waste, stats search)• Japanese Knotweed management• Tender package submission• Competitive tender evaluation• Value engineering exercise• Understood the principles of design for steel sheet pile structures• Site supervision and dealing with Site Queries daily• Chairing Progress Meetings on site • Approved Invoices and Interim Applications• Reviewing Contractors RAMS