textual image stating 'Department of Health, Victoria, Australia'

Design development

The design development activity is the preparation of detailed development of the schematic design.

This activity can only commence after the schematic design and cost plan C1 have been approved by the Department of Health and Human Services.

The main components of design development include:

The components of design development
The components of design development

Some of the procurement methods utilised in capital projects are:

  • standard lump sum
  • design and construct
  • document and construct
  • construction management
  • public private partnership.

The project control group (PCG) or steering committee will need to ensure:

  • original project objectives, approval of scope of works and budget are included in these stages
  • the assigning of appropriate tasks, which may entail advertising for and interviewing of consultants, is undertaken where required.

This activity involves the ongoing development and refinement of the approved design by all consultants and the incorporation of all authority requirements into the design. It also entails the final design components of structural systems, building engineering services, safety, security, energy management systems, selection of materials and finishes and resolving any other design issues outstanding from the schematic design stage.

The design development stage provides the agency / health service and Department of Health and Human Services with a completed design for the project setting out all the aspects to ensure the description of the planned works meets the service delivery requirements in a manner that meets functional parameters. Design development should resolve all outstanding design issues and address matters such as utility company negotiations, metering, monitoring and control systems, landscaping, water and waste management and wayfinding signage.

The design development stage is to retain the same approach to the project previously established at the schematic design stage in terms of low maintenance and durable design materials. In the selection of plant, equipment and finishes, consideration shall be given to robustness, long life and ease of operation. Consultants are advised to consider environmental sustainability issues and recurrent costs and the use of box gutters should be avoided unless approved by the Infrastructure Planning and Delivery (IPD) branch project manager.

A further capital cost estimate (cost plan C2) and recurrent operating costs will be prepared to demonstrate that the project is still within capital budget and recurrent estimates. If not then alternative recommendations required to achieve the budget will have to be assessed and initiated.

A design development report will be prepared that demonstrates the issues of planning, design, materials selection, construction and constructability, staging, services integration and co-ordination, structural, civil, mechanical, electrical, hydraulic and energy services have been addressed and integrated into the proposal to ensure an effective project outcome.

Typical documentation required at the completion of this stage is set out in the checklist and should include but not necessarily be limited to the following:

  • site plan (1:500) including site development and construction stages
  • room data sheets
  • plans, sections and elevations (1:100)
  • developed room Layouts (1:50) including furniture and equipment
  • construction sections (1:50) for facade, perimeter wall sections showing finishes at junctions of walls and floors, ceilings, stairs and risers etc.
  • roof layout and drainage details (1:100)
  • co-ordinated reflected ceiling plans (1:100)
  • preliminary construction details (1:20 and 1:10)
  • typical room details with specific project requirements addressed such as secure facilities or health service needs
  • site works and landscaping layouts (1:200) including stormwater, paving, car parking, excavation / fill, planting, engineering site services and pit locations
  • mechanical services (1:100) including air conditioning, lifts, heating, ventilation, medical gases and plant rooms together with reticulation systems
  • equipment briefing schedules
  • energy, water and waste management systems including recycling facilities
  • fire services layout (1:500 and 1:100) including smoke and fire zones and compartmentation of building(s)
  • hydraulic services layouts (1:100) including hot and cold water, thermostatic mixing valves and sewer / filtration
  • electrical services layouts (1:100) including transformers, generators, lighting, power and switchboards together with reticulation systems
  • communications, security and data cabling
  • building management, monitoring and control systems
  • helipad location and associated flightpaths
  • cost estimate (cost plan C2) including reconciliation with cost plan C1 and confirmation of cash flow
  • recurrent cost estimates for operations and management, energy and resources
  • confirmation of program and procurement method
  • confirmation of energy consumption savings achieved
  • reconciliation of floor areas and other key design parameters against previous approvals.
  • assess certification issues and full details of any proposed building modifications to be sought against the Building Code of Australia
  • confirmation of staged construction works and contractor’s construction zones.