Insights & Guides
Planning a Groundworks Package for a Commercial Development
Groundworks are one of the earliest major stages of any commercial development, and often, the decisions made before work begins can impact the entire construction programme.
From understanding ground conditions and establishing site levels to coordinating foundations, drainage, utilities and reinforced concrete works, a well-planned groundworks package helps provide the foundations for a smoother and more predictable project.
For developers, main contractors and project teams, early planning can also help identify potential risks, establish a clearer scope of works and provide groundworks contractors with the information they need to prepare an accurate and competitive tender.
In this guide, we look at some of the key considerations when planning groundworks for a commercial development.
What Does a Commercial Groundworks Package Include?
The exact scope of a commercial groundworks package will depend on the development, site conditions and structural design.
However, a comprehensive package can potentially incorporate the following:
- Site clearance and enabling works
- Bulk excavation and reduced-level excavation
- Earthworks and muck-away
- Foundations and footings
- Piled foundations, pile caps and ground beams
- Reinforced concrete structures
- Ground bearing concrete slabs
- Formwork and steel reinforcement
- Below-ground drainage
- Attenuation systems
- Service trenches and underground ducting
- Utility infrastructure
- Hardstanding
- External works and associated civils
Some projects may require a specialist groundworks contractor to undertake only a particular element of the works, while others benefit from appointing one contractor to deliver a larger coordinated package.
Establishing exactly what is included, and where responsibility transfers between contractors, is therefore an important part of the planning and tender process.
Getting the Ground Conditions & Design Information Right
Before significant excavation begins, it is important to understand what lies beneath the site. A suitable ground investigation can provide information about soil conditions, bearing capacity, groundwater, contamination and other factors that may influence the proposed construction methodology.
Ground conditions can affect everything from foundation design and excavation methods to temporary works and the handling or disposal of excavated material. They can also have a significant impact on programme and cost.
The quality of the wider design information provided at tender stage is equally important.
Where possible, a commercial groundworks contractor should be provided with a coordinated package containing relevant information such as:
- Architectural and structural drawings
- Foundation designs
- Site levels
- Drainage layouts
- Ground reports
- Existing utility information
- Proposed service routes
- Programme and site access information
Providing clear and current information gives contractors a much better basis from which to price the works. Where ground conditions, drainage design or structural details remain unresolved, contractors may inevitably need to make assumptions when preparing their tender. A well-prepared information package helps reduce these uncertainties and makes it easier to compare quotations on a like-for-like basis.
Planning the Groundworks Around the Wider Development
Commercial groundworks do not take place in isolation.
Excavation affects foundations. Foundations need to coordinate with drainage and services. Reinforced concrete structures require accurate setting out, reinforcement and formwork. Meanwhile, plant, materials, concrete wagons and muck-away vehicles all need to move safely around the site. This makes early coordination particularly important.
On a large open development, site logistics may be relatively straightforward. On constrained sites, particularly in London and other built-up areas across the Home Counties, access can become a much greater consideration. Plant access, material storage, concrete deliveries, neighbouring properties, public highways, existing services and restricted working areas may all influence how the groundworks package is approached.
Below ground, proposed drainage and utility infrastructure also needs to be carefully coordinated with foundations and other structural elements. Commercial developments may require extensive drainage, electrical ducting, telecommunications, water services, EV charging infrastructure and other underground service routes.
Where appropriate, appointing a contractor capable of delivering several elements of the substructure and groundworks package can simplify these interfaces.
For example, excavation, foundations, drainage, ground beams, reinforced concrete structures and slabs may all form part of one coordinated groundworks package.
Preparing a Commercial Groundworks Tender
Groundworks often sit directly on the critical path of a commercial construction programme. Until excavation, foundations and the required substructure works have progressed sufficiently, many subsequent activities cannot begin.
Providing prospective contractors with a clear understanding of the intended programme is therefore important.
Every development is different, and it is not always possible to have every detail finalised before approaching contractors. However, providing as much relevant information as possible helps contractors understand the project and prepare a more informed quotation.
A useful commercial groundworks tender package might include:
- Site address and project overview
- Proposed scope of works
- Architectural drawings and structural drawings
- Foundation details
- Drainage layouts
- Site levels
- Ground reports
- Site access information
- Relevant specifications
- Proposed start date and construction programme
- Tender return dates
Where information is still being developed, making this clear allows contractors to identify assumptions, exclusions or areas requiring further clarification.
It is also worth ensuring that contractors are pricing against the same information and drawing revisions. Two quotations with a similar headline value may not necessarily include the same scope of works.
Choosing the Right Commercial Groundworks Contractor
Price will naturally form an important part of any commercial tender, but it should not necessarily be considered in isolation.
Groundworks can involve considerable technical, logistical and programme risk, and the capability of the contractor can have an impact on subsequent stages of the development.
When evaluating a commercial groundworks contractor, project teams may want to consider:
- Experience delivering comparable commercial projects
- Groundworks and civils capability
- Reinforced concrete expertise
- Experience interpreting structural and engineering drawings
- Workforce and plant capability
- Relevant construction industry accreditations
- Evidence of successfully completed projects
- Ability to meet the required programme
- Experience working alongside professional project teams
There can also be advantages to involving an experienced groundworks contractor earlier in the process, particularly on larger or more technically challenging developments.
Reviewing drawings, ground investigation information and the proposed scope can sometimes identify practical considerations relating to access, excavation methodology, sequencing, concrete placement or the interfaces between different elements of the project.
The objective is not to replace the architect, structural engineer or project manager, but to bring practical construction experience into the wider project team.
Planning Commercial Groundworks Across London & the Home Counties
McGrath Civils has over 30 years of experience delivering groundworks, reinforced concrete and civil engineering projects.
We work with developers, main contractors, architects, engineers and commercial project teams across London, the Home Counties and the South of England, delivering both complete groundworks packages and individual specialist elements of larger construction projects.
Our commercial capabilities include site clearance and enabling works, excavation, foundations, reinforced concrete structures, substructures, formwork, drainage, underground services, EV infrastructure and associated civil engineering works.
If you are currently planning or tendering a commercial development, our team would be pleased to review your project information, drawings and proposed scope of works.
Planning a Commercial Development Project?
If you’re looking for an experienced groundworks contractor for an upcoming commercial project, feel free to contact our team to discuss your requirements.
Call and speak to Sean McGrath directly on 07717 014006 or email info@mcgrathcivilsltd.co.uk
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