M & A Roarty Construction Ltd

Recent Project History:-

Contract:    Horn lane, Acton Flood Alleviation Scheme
Client:         J Murphy & Sons Ltd.
Date:           Sept 2007 - Jan 2008

1 No 15m diameter underpinned precast concrete segmental shaft
3 No 6m diameter caisson precast concrete segmental shafts
2 No 4m diameter underpinned precast concrete segmental shafts
1 No 3m diameter underpinned precast concrete segmental shaft

184m of 1500 diameter pipejack carried out in a single drive with interjacks installed 
260m of 1800 diameter pipejack carried out in two drives 
134m of 1500 diameter segmental tunnel. 

Contract:    Stanton Harcourt STW Improvement  
Client:         Black & Veatch.
Date:           Dec 2007 - Jan 2008

Construction of a 10.3m diameter caisson shaft for subsequent 
conversation to a humus tank within the STW.

Contract: Milton Cresent FAS  
Client:      Laing O'Rourke.
Date:        Aug 2007 - Oct 2008

170m of 1800 diameter pipe complete with Dry Weather Flow Channel.
215m of 300mm pipe.
Installed using open cut technique
With associated RC Manhole Chambers.

Contract: Hampton AWTW - Sunnyside Balancing Tower 
Client:      Black & Veatch.
Date:        Nov 2007 - Jan 2008

Construction of a 4.5m diameter caisson shaft complete with RC Lining for subsequent conversation to a balancing tower within the AWTW.

Contract: Hedsor Road Flood Alleviation Scheme
Client:      J Murphy & Sons Ltd.
Date:        2007

155m of twin 1200mm dia concrete tank sewers using  open cut method. 
252m of 300mm dia vc sewer pipes using open cut method. 
134m  of 225mm dia vc sewer pipes using open cut method.  
Associated RC and PCC manholes. In field and through  carriageway.  
High yield pumping to dewater the excavations.

Contract:    Hainault LUL Depot  
Client:         Enterprise Managed Services Ltd.
Date:           Nov 2006 – April 2007

124m of 610Ø (O.D.)Perforator Augerbore,
Insertion of 124m 565Ø (O.D.) Terraline PE Pipe.
258m of 500Ø(I.D.) pipework laid in open-cut trench
Associated 1.5mØ Chambers 

Contract:    Basingstoke Sewer Improvements
Client:         J Murphy & Sons Ltd.
Date:           Nov 2006 - Jan 2007

9 No 5mØ shafts including finishings up to 18m in depth.
2 No Sheet and Frame shafts including up to 5m in depth.

Contract:   Dunsfold SPS - Rising Main Replacement
Client:        Laing O’Rourke.
Date:          Jan 2007 - Mar 2007

2207m of 180mm dia OD SDR17 PE100mm pipe in verge/farm land  using open cut technique.
546m of 180mm dia OD SDR17 PE100mm pipe in footway using open cut technique.
444m of 180mm dia OD SDR17 PE100mm pipe in carriageway using open cut technique.
225m of 180mm dia OD SDR17 PE100mm pipe in farmland using directional drilling technique.
5 No 1800 manholes average depth 2.4m including air valves.
2100mm manhole depth 2.4 for washout chamber.
Decommission existing rising main and chambers. 

Contract:   Elvetham SPS - Rising Main Replacement
Client:        Laing O’Rourke.
Date:          Jan 2007 - Mar 2007

532m of 180mm dia OD SDR11 PE80mm pipe in carraigeway using open cut technique.
Decommission existing rising main and make good connections into chamber. 

Contract:  Hampton Waste Pipeline  
Client:       Black & Veatch.
Date:         2007

290m of 600mm I.D Integral Pipe in Open Cut
100m of 710mm  O.D. SDR17 PE100mm pipe in Open Cut.
240m of 710mm  O.D. SDR17 PE100mm pipe in Slip Lining.
20m of 600mm I.D Integral Pipe in Lay and Backfill over Retaining Structure.
110m of 710mm O.D. SDR17 PE100mm pipe in Open Cut.
Connection to Sludge Beds 
45m of 600mm  Nominal Bore Integral Pipe on the Reservoir Embankment

Contract:    Longmoore Road, Liphook, Hampshire	
Client: 	      J Murphy & Sons Ltd.
Date:           April 2006 - June 2006

80m 900Ø twin pipe attenuation tank, 
26m of 225Ø pipework laid in open-cut trench
Associated 3mØ Chambers
Removal of Earthwork Bunds

Contract:  BT Exchange Closure, Moorgate, London	
Client: 	    Waterland/Morricom
Date:          Feb 2006 - July 2006

5 Sheet and Frame Shafts, up to 7m x 6.9m in plan and up
to 7m deep. 
Carrying existing services in the working shafts.
Underpinning existing sewers nearby.
120m of Heading.
Construction of in-situ BT chambers and connection from existing 
BT exchange.

Contract: Enborne Road, Newbury	
Client: 	   J Murphy & Sons Ltd.
Date:        November 2005 - February 2006

9m Ø shaft, 12m deep
120m of pipework laid in open-cut trench
Associated Chambers

Contract:   Burst Driven Mains Upgrade, 
                    Thames Water DMR Programme
Client: 	     Morrison Utility Services
Date:          2005 - ongoing

Mainlaying
Pipe Bursting
Directional Drilling
Insertion
Service Connections

Contract: Mains Upgrade, 
                  Thames Water VMR Programme
Client: 	   J. Murphy & Sons Ltd
Date:        2005 - ongoing

Mainlaying
Insertion
Service Connections

Contract: Petchey Academy, Hackney, London.	
Client: 	   Meeres Civil Engineering Ltd.
Date:        March 2006

40m of 300 dia sewer installed in Heading 
Accociated boundary manholes 
Connections to main sewers.

Contract:  Grand Arcade, Cambridge.	
Client:       W. Long & Company Ltd.
Date:         October 2005 - November 2005

80m of 300 dia sewer installed in Heading to 
minimise disruption and maintain continuous access
to the main site works.
Accociated connections to main sewers.

Contract: Lyon Way, Frimley.	
Client: 	   J Murphy & Sons Ltd.
Date:        April 2005 - July 2005

15mØ shaft, 13.5m deep
Lower aquifer - Ejector well dewatering.
Upper Aquafer - Conventional dewatering
Sheet Piled Cofferdam to excavate the collar

Contract:  Rayners Lane Mainlaying Scheme.	
Client: 	    Enterprise Managed Services Ltd.
Date:         2005

620m of 125mm main laid in opencut trench
Associated service connections

Contract:  High Easter Clean Water Mainlaying Scheme 	
Client: 	    Enterprise Managed Services Ltd.
Date:         2005 

700m of 125mm main laid in opencut trench
6000m of 125mm main laid by directional drilling
Associated service connections

Contract:  London rd, Ruscombe.	
Client: 	    J Murphy & Sons Ltd.
Date:         Feb 2005 - April 2005

4 No Sheet and frame shafts, up to 6.5m deep
162m of 0.225m Augerbore.
47 metres of pipework of 255mm laid in open-cut
14 metres of pipework of 255mm laid in heading
Associated Manholes etc

Contract:  Milford Gardens Flood Alleviation Scheme, Edgeware.	
Client: 	    Enterprise Managed Services Ltd.
Date:         2004-2005

25m Ø underpinned shaft, 18m deep including a 1200m3 plug
RC Wall 25mX13mX1.2m
170m of twin 1.0m Pipe Jack.
1400 metres of pipework of 375mm to 600mm pipework laid in open-cut
Associated sheet and frame shafts, Manholes etc

Contract:  South Mimms Clean Water Mainlaying Scheme.	
Client: 	    Enterprise Managed Services Ltd.
Date:         2004-2005

1200m of 125mm and 225mm main lain in opencut trench and associated
service connections

Contract: Little Bushey Clean Water Mainlaying Scheme.	
Client:      Enterprise Managed Services Ltd.
Date:        2005

2300m of 125mm and 180mm main laid in opencut trench
1700m of 125mm main laid by directional drilling
Associated service connections

Contract:  Lot 7, previously WA53.	
Client:       Enterprise/ Subterra
Date:         2004.

Contract with Enterprise/ Subterra carrying out various projects for
them. 7-10 gangs sinking shafts ie Sheeted, Segmental & Caisson,
Timber Headings of various sizes.

Contract:  New Connections	
Client: 	    Various Clients - Meeres Civil Engineering Ltd, 
                                                  Laing O'Rourke, Morrisroe, Lowry etc
Date:          2004.

Made sewer connections to the sewer network

Contract:  A13.	
Client: 	    Subterra/ Enterprise Managed Services Ltd.
Date:         2002 - 2004

150m of 1.2 Pipe Jack.
85 metres of twin 1.5m Pipe Jack on the A13.
100 metres of 1.2 Pipe Jack on the A13.
30 metres of 1.2 m segmental tunnel on the A13 Contract.
100m of 2.1m dia pipejack
60m of 1.8m dia pipejack
3 no 7m dia caisson shaft
Associated sheet and frame shafts

Contract:  Farm Rd Flood Alleviation.	
Client:       Subterra
Date:         2003

340m of 1.5m dia mechanised pipejack.
5 No 5m dia shafts
30m of heading

Contract:   Gade Street.	
Client: 	     Subterra
Date:          2003

150m of 300mm dia installed at average 4m deep
30m of heading and associated sheet and frame shafts


Contract:   Romford Flood Alleviation.	
Client: 	     Subterra
Date:          2003

Constructed 15m dia shaft, 15m deep.
1500m of opencut upgrading to 375mm diameter and associated manholes


Contract:    Perry Oaks.	
Client: 	    Subterra.
Date:           2002.

Sunk 2 no 7m I.D shaft 15 metres deep 
Drove 9 rings of 2.74 smooth bore tunnel.

Contract: Thames Water.	
Client: 	   Subterra.
Date:        2002.

Constructed  a 1.8 segmental shaft on Oxford Street.
Constructed a 1.5 segmental shaft @ Ruislip.

Contract:   Crossness STW..	
Client: 	     Laings.
Date:          2002.

Constructed 2 no 9x4x6 shafts.


Contract:   Crossness STW..	
Client: 	     Laings.
Date:          2001.

Caisson shaft.

Contract: Thames Water Minor Works.	
Client: 	   Subterra.
Date:        2001.

Continuous working in the London area. 9/14 gangs, excavating shafts,
sheeted & segmental, pipe jacks and headings.

Contract:  The Barbican.	
Client: 	    O.C Summers.
Date:         2001.

Short 8m Pipe Jack for on their job, where there was very bad ground
and wet conditions.

Contract: City of London.	
Client:	   Lowery.
Date:        2001.

Timber shaft & heading


Contract: A 13.	
Client:	   Subterra.
Date:        2001.

Sink 3 no shaft @ 6m I.D.
Drive 90 metres of 2.1m Pipe Jack.
Drive 50 metres of 1.8m Pipe Jack.
Drive 150 metres of 1.2m Pipe Jack.

Contract:   Various	
Client:	     Subterra.
Date:          2000.

Various open trench works & timber headings.

Contract:  Folkstone.
Client:	    Delta
Date:         2000.

300 rings of 2.1m I.D segmental tunnel
An open faced shield with 2 no sand tables & face rams was used. 
Wet conditions, problem with the face, used the bird wing system for
erecting the segments. Various other open trench works & timber headings.

Contract: Islington	
Client:      Subterra.
Date:        1999.

2 no 5 metres shafts, 
10 metres deep
150 metres of 1.2 pipejack.

Contract:  Various	
Client:	      Subterra.
Date:         1999.

3 no 4/5 metres I.D shafts @ Montagu Road.
2 no 6m I.D shafts @ Woolwich.
Various other smaller shafts & short drives, ie Timber headings.

Contract:  Thames Water Contract
Client:	    O.C Summers Ltd.
Date:         October 1998.

430 metres of  450mm pipe in 3 metre deep trench's 8 no manholes.

Contract:  Thames Water Contract
Client:       J Bray Construction.
Date:         August 1998.

120 metres of 3 metre deep open cut. 3 manholes.

Contract:  General Headings/Open Cut
Client:	      Total Pipeline Solutions.
Date:         July/October 1998.

A series of sheeted shafts/ drive and pack timber headings.
A series of open trench work. Supply of pipe layers, miners and labourers.

Contract:  The Greenway	
Client:	    Total Pipeline Solutions.
Date:         June 1998

Constructed 15m I.D shaft. 20 metres deep.

Contract: Finchley Road  	
Client:      Total Pipeline Solutions.
Date:        June 1998

3m I.D 20 metres deep. 
31 metres of 1.2 segmental tunnel 
8x6x6 metre deep shaft.

Contract: TW Minor Works Contract
Client:      Total Pipeline Solutions
Date:        June 1998

1.8m I.D shaft x5 metres deep
11 metres of heading.


Contract: Station Road Islington. 
Client:      Total Pipeline Solutions
Date:        April 1998


3 no. segmental shafts. 
60 metres of 1.2 pipejack. 
20 metres of 1.2 segmental tunnel.

Contract:   Sloane Square
Client:	     Total Pipeline Solutions
Date:          March 1998

60 metres of 1.2m I.D pipe jack.

Contract:  Oxford
Client:	    O.C Summers	
Date:         Feb 1998.

Constructed 7m I.D. 7 metres deep shaft.


Contract:  Brimsdown 
Client:	    Lowerys	
Date:         February 1998

Excavation of 24 no deep bases and erection of 24 no posts.

Contract:   Causton Road N6
Client:        TPS formerly Thames Water Contracting
Date:          November 1997. TPS

Constructed 4 no segmental shafts and 250 meters of 1.2 pipe jack.
5m I.D shaft and 8m of 6 foot tunnel.


Contract:   Finchley Road
Client:	     Thames Water Contracting.
Date:          1997

Shafts plus 40 meters of Pipe Jack 
All finishing works.

Contract:   Haringey Contract
Client:	     Thames Water  Contracting.
Date:          1997 

General Shaft sinking, 
Timber headings, 
Open cut pipe laying 
4 no. segmental shafts 
250m of pipe jacking 

Contract:   Pepperhill/ Gravesend Contract
Client:	     Delta 	
Date:          1997. May to September

2 no. seven foot hand shields in 65. Bar of compressed air. 
Both drives being constructed concurrently and both double shifted.

Contract:   Grove Vale Flood Alleviation, East Dulwich
Client:	     Thames Water Contracting.
Date:          1996/1997 

Constructed 2 shield drives for Thames Water Contracting.
Constructed a 1.69m and a 1.2m I.D tunnels with on line sewers. 
Shaft sinking
Laying of channels 
Grano finishing work 
Timber headings.

Contract:  Thames Water Minor Works Contract
Client:       J Bray Construction.
Date:         1996/1997 

Numerous Timber headings 

Contract:  Crawley .  
Client:	    Barhale.
Date:         1996 

Jacking of culverts 3.66m high and 2.5m wide.

Contract:  Ashford and Orpington.  
Client:	    J Murphy & Sons. 
Date:         October 1995 to March 1996.

Supply of labour to 8 foot shields.

Contract:   JLE Contract 103 
Client:	     Balfour Beatty/ Amec. 
Date:          1995.

Constructed of 3 shafts @ 4.57m I.D using the jacking method 
and underpinning method. These shafts were enlarged from 
3.36m to 4.75m I.D. 
Supplied labour, plant and temporary materials on this contract.

Contract:  Lowlands Road/Vaughan Road, Harrow 
Client: 	    Barhale
Date:         1994/1995

Constructed 400 rings of 2.610m dia tunnel in open faced shield 
and associated openings and break ups.

Contract:  Thanet Road Tank, 
Client:	    Ramsgate
Date:         1993/1994.

Constructed 700 rings of 3.3m One Pass Tunnel in an open faced
shield loading the spoil with an Eimco 21 model.

Contract:  Teignmouth 
Client:	    Delta
Date:         1993.

Constructed 38 rings of 14ft bolted shaft, we belled out to a 20ft 
bolted shaft.
Constructed 8 rings of 10'6" and contracted 250 meters of 5ft,
pipe jack, continued the Constructed 20ft shaft and pipe jacked
80m of 1.2m lower level tunnel.

Contract:  Almer Road, North London 
Client:	    Delta
Date:         1992.

Constructed 430 rings of 1.35m of Wedge Block Tunnel in a hand shield.
Constructed 1002 rings od 1.2m of Wedge Block Tunnel in a hand shield.
Constructed 100m of 900mm Pipe Jack.
7 associated shafts.

Contract:    Surrey Docks. 
Client:	        Donelon. 

Construction of launch and reception tunnel eyes in compressed air. 
Supply of 3 gangs of miners to their lovat TBM.

Contract:  Lee Vally Water Supply 
Client:	    Edmund Nuttall Limited.  

Supply of all labour for 5k.m of 100" wedge block tunnelling where we 
achieved a world record for production with T.B.M. 
Supply of open faced shields for sections of the work.

                            

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