Question

The preliminary system design (conceptual design) begins with the system level requirements that are documented in the A-specification (system level specification) and the support concept documents. These system level requirements are translated into detailed qualitative and quantitative design requirements through the processes of functional analysis and requirements allocation.

Required:

Carry out a preliminary system design of a product or service you wish to invent of your choice. Illustrate the concepts noted above. (20)

Answer 1

PRELIMINARY DESIGN

A preliminary design is of an entire treatment facility , carried out in insufficient detail to enable accurate estimation of the costs for constructing and operating treatment facility.

Design process

It is regarded as creative problem solving through a series of steps or a sequences of activities , which lead from initial concept to realization.

Example of preliminary design

CONSTRUCTION OF HOME

1. Conceptual or preliminary design

The first step or phase of the design process is to create a preliminary design by understanding your idea . The best way to create preliminary concepts is by having a meeting in which you can review your wish list with your home builder and designer.

preliminary research

* Examine your current home and lifestyle

*Developing your design brief

*Deciding baseline budget.

*Exploring sources of professional advice for stage of decision

*Familiarizing yourself with the advise in this guide to inform your brief

Create a construction activity diagram

Choose designer

Choosing the right designer for your project is arguably most important step on the path to your new home.Architectures and building designers.

Site analysis

Visit the sight with your designer to do a SWOT analysis ( strength , weakness, opportunities ,threats )

on the site consider :

* Climate responsive design and site specification .

*orientation

*solar access.

* Views

* Storm water drainage

*Slope

*Access and transport

* Services

* Soil type.

* Water availability.

Then make a concept plan and site analysis after the first site visit.

Brief development, fee proposal and design contract

After brief discussion about site analysis and fee proposal design a contract.Review your preliminary budget and your brief with designer.

Opinion of probable cost - Initial design has been based on total square meter cost of $1000/ square meter. This figure is based on " on off " production . The modular design will be produce significant cost savings if applied to large volume runs produced in a factory environment . - Opinion one has floor area of 105 sq.m and our opinion of probable cost is in the order of $115,000. - other costs include: * 3kw photovoltaic array =$ 30000 *Water tank and pumps = $ 7000 * native landscaping and site workers =$7000 * waste tank = $ 5000

Design development

The second step in your custom in fill home's design process will be preparing your drawings to obtain development permit.

In this phase , developers develops the structural design in detail base don your selection for exterior material and finishes.

Building permit

After obtaining your development permit , design can proceed to the third step of the design process for your custom infill home. Once DP is approved , the design team can prepare site plans and drawing needed for the building permit .This essential detailed floor plans, detailed exterior elevations , roof plans and electrical plans. Team creates a building permit package and take care of everything required to proceed with the construction process.

Interior design

Finally , in this last step ,team will work with you to cover all interior details , work on elevations all based on your interior material selections , lightning , plumbing , hardware , glass ,finishes and so on.