Civil Engineering Management B

2018 – 2019

 

Coursework – The Quarry Road Project

This contributes 40% to the final module mark

 

 

You are the assistant civil engineer on the construction of a new access road.  An access road is to be constructed into a new quarry which is being developed in the Yorkshire Dales to the north of Skipton.  The works comprise:

 

10km of single carriageway flexible pavement construction with associated earthworks, fencing, drainage and kerbing

 

Two culverts

 

An Accommodation overbridge

 

The diversion of a 660kV overhead electricity line.

 

The work is to start on the first Monday in the next calendar year with the following non-work periods:

 

Easter – One week

 

Spring Bank holiday – One week

 

Summer Bank Holiday – One week

 

Christmas and New Year – Two weeks

 

A five-day week will be worked.

 

Roadworks can continue whilst the bridge is being constructed subject to appropriate health and safety provisions being in place.

 

The roadworks site must be secured by temporary or permanent fencing prior to earthworks starting on any sections of cut or fill.

 

Surplus cut or fill will go to or come from the quarry.

 

There is to be a one week buffer between all roadworks operations.

 

 

 

Tom Craven

 

Please prepare:

 

For the roadworks

 

A long section of the Quarry Road is attached. For this aspect of the project, please prepare:

 

1. A time-Location analysis of the roadworks part of the scheme

25%

 

1. A schedule showing when each sub-contractor is needed and how many gangs are required

5%

 

For the Accommodation Bridge

 

Details of the tasks associated with the construction of a new Accommodation Bridge, are attached.  For this aspect of the project, please prepare:

 

1. A Work Breakdown structure for Accommodation Bridge, both paper based and constructed in the software

5%

 

1. A fully resourced and costed Programme of Works for the Accommodation Bridge construction.  This is to incorporate the Work Breakdown structure from above and is to be published only after suitable resource management which must be evidenced. Both a paper and an electronic copy in MS Project 2010 format are required to be submitted.

20%

 

1. A cumulative cashflow for the bridge construction

5%

 

NEC3 Engineering & Construction Contract Application

 

Figure 1 Contractual arrangements for Accommodation Bridge

Figure 1 shows the contractual arrangement for the Accommodation Bridge project.  IT is assumed that the subcontractors used for the accommodation bridge construction will be taken from a combination of the subcontractors already identified for the roadworks.

 

Townsend Managing are acting as the Project Manager for the project on behalf of the Employer, Yorkshire Quarry Group Ltd, and are employed under a NEC3 Professional Services Contract (PSC).  BEDL are the statutory authority who will be responsible for designing, and undertaking the diversion of the overhead electricity cables at 0.5km chainage, and are also employed under a NEC3 PSC.  The main contractor, Skipton Construction, will be employed to carry out the rest of the works for the Yorkshire Quarry Group Ltd and will be employed under a NEC3 Engineering and Construction Contract (ECC).

 

You work for Skipton Construction.  As part of the Works Information in the NEC3 ECC at tender stages, Yorkshire Quarry Group Ltd have provided some information about the project, but you would like more information to base your tender on in the form of:

 

• Borehole logs around the two culvert locations
• Structural information relating to the culverts
• Key dates regarding the diversion to the overhead electricity cables by BEDL

 

1. Write a reply to the Employer requesting this outstanding information, including specific clauses within the NEC3 ECC supporting this request.

                                                                                                                                    5%

 

The roadworks are underway on site, and the key date that was given to by the Employer for the diversion of the electricity cables is at risk of being achieved by BEDL.  There is a risk that this will affect the end date of the programme, and have cost implications.

 

Working in the spirit of mutual trust and cooperation (Cl. 10.1), you send an Early Warning (Cl. 16.1) to the Project Manager (Townsend Managing).  This is followed up by a Risk Reduction Meeting (Cl. 16.3) to discuss the risks to programme and cost of the project.

 

The Project Manager does not attend this meeting.

 

The Key Date given in the contract is missed.

 

1. Prepare a Compensation Event notification to the Project Manager relating to this missed date.  You should include all relevant clause references from the NEC3 ECC that will support your notification.

                                                                                                                                  15% 

 

The notification from the Compensation Event was received by the Project Manager, and you have since provided a full quotation supporting the claim.  This was approved by the Project Manager.  However, the additional costs approved in the Compensation Event were not paid on time by the Project Manager.

 

1. Describe the process and relevant clauses in the NEC3 ECC that would address this missing payment, and any additional money that may be due to Skipton Construction.

                                                                                                                                  10%

 

 

 

For the whole submission

 

Suitable presentation and commentary, including planning details and assumptions made.   Ensure that all pages are date referenced and numbered.

10%

 

Road long section showing cut and fill and position of structures

 

 

 

Roadworks Construction Outputs

 

 

Activity	Duration/ Output	Sub-contractor
Construction of Junction on A65	3 weeks	Roadworks sub-contractor
660kV overhead cable diversion at chainage 0.5km	4 weeks	BEDL
Culvert at chainage 3km	6 weeks	Structures sub-contractor
Accommodation Bridge at chainage 5km	To be calculated separately	Various resources to be determined separately
Culvert at chainage 7.5km	4 weeks	Structures sub-contractor
Temporary fencing (both sides)	1000m/week	Fencing sub-contractor
Strip topsoil	500m/week	Earthworks sub-contractor topsoil team
Earthworks	4000m3/week	Earthworks sub-contractor bulk earthworks team
Permanent fencing (both sides)	250m/week	Fencing sub-contractor
Drainage.  This must be after cut/fill but before subbase.	25m/day	Drainage sub-contractor
Subbase	100m/day	Roadworks sub-contractor subbase gang
Kerbs (both sides)	400m/week	Roadworks subcontractor kerbing gang

 

 

 

 

 

 

Continued ..

Activity	Duration/ Output	Sub-contractor
Preparation for surfacing. (After kerbs)	1000m/week	Roadworks sub-contractor kerbing gang
Surfacing (After preparation)	125m/day	Roadworks subcontractor surfacing team
Soil and seed. (After drainage and kerbs).   Chainage 0 – 1km   Chainage 1 – 4km   Chainage 4 – 7km   Chainage 7 –8km   Chainage 8 – 10km	1 week   6 weeks   6 weeks   1 week   2 weeks	Earthworks sub-contractor topsoil gang

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accommodation Bridge

 

 

	North
			South

 

 

 

North Bank Seat                                                                                                                                   South Bank Seat

 

	North Span		Centre Span		South Span

 

 

 

 

		North Pier		South Pier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accommodation Bridge

 

The Accommodation Bridge is part of the Quarry Road Project.  All bulk earthworks must be completed before the bridge construction can start. Your task is to plan the construction of this bridge and determine resource requirements.

 

To keep the planning relatively simple, ensure that the construction is in “lumps”.  It is appreciated that there ought really to be much more detail but time is against us!

 

Some Construction details:

 

We are in an area of fine Yorkshire sandstone so base construction is directly on to bedrock.

 

The North and South Bank Seats are exactly the same construction.

 

The North and South Pier are all exactly the same construction

 

Bank seat construction comprises Excavation, Formwork, Steelfixing and Concreting plus fixing bearings

 

Pier construction comprises Excavation, Formwork, Steelfixing and Concreting to the base and Formwork, Steelfixing and Concreting to the stem plus fixing bearings

 

Each deck span comprises 10 beams with a concrete slab on permanent formwork and is to include parapet fixing, deck waterproofing and deck surfacing.

 

 

 

 

Accommodation Bridge – Typical example

 

Pier Base Construction – typical details for one

 

Item	Duration (Days)	Resources	Costs (£)
Excavation	4	Bridge Earthworks Subcontractor	£2000
Formwork	5	Ordinary Crane 4 operatives Pier Base Formwork
Steelfixing	6	Ordinary Crane 4 operatives Pier Base Formwork	Materials £15000
Concreting	1	Concrete Pump 4 operatives	Materials £10000