Civil Engineering Management B
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:
- A time-Location analysis of the roadworks part of the scheme
25%
- 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:
- A Work Breakdown structure for Accommodation Bridge, both paper based and constructed in the software
5%
- 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%
- 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
- 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.
- 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.
- 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
|
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|
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North Bank Seat South Bank Seat
|
|
|
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|
|
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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 |
