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2 - Design HVAC Systems
The objective of the design activity for a project is the progressive development and refinement of the requirements expressed in the program (brief) and then to propose design solutions to those requirements including construction/installation methods, materials, technical solutions. Design solutions proposed should be validated against the provision of building codes and regulations for the specific location of the project and should be in accordance with sustainability criteria including environmental impact and service life. The cost of the design solutions proposed should be estimated and managed through the progressive development of a cost plan.
In this case, the design activity is concerned with HVAC systems.
Process Overview
| Id | Task | Name | Description | Process Stage(s) |
|---|---|---|---|---|
| 2.1 | Sub-Process (collapsed) | Design HVAC Systems (Programming) | The term "programming" is the process of developing a program. Programming includes the assessment of needs/requirements and delimitations/constraints. These are described as a program (e.g. in Norway usually according to Norwegian Standard NS3451). Delimitations can be physical (e.g. area type and size, space program), technical (e.g. number and type of outlets, or type of materials), time based (e.g. project progress) and financial (e.g. investment budget or LCC). The programming stage accounts for the client's assessment of the requirements to be met by the completed construction and forms the basis for determining the budget. | [Outline conceptual design(4)] |
| 2.2 | Sub-Process (collapsed) | Design HVAC Systems (Sketch) | The term "sketch design" is the process of developing an interdisciplinary design where the propositions from the design team describe relevant alternative main principles and main system solutions (in Norway usually according to Norwegian Standard NS3451). The alternatives are presented with pros and cons. The design team's recommended design solutions for further study at the full concept stage are stated, along with proposed reports to be carried out at the full concept stage.
For HVAC systems, this process includes determining:
|
[Outline conceptual design(4)] |
| 2.3 | Sub-Process (collapsed) | Design HVAC Systems (Full Concept) | The term "full concept design" is the process of developing an interdisciplinary design where the propositions from the design team describe a recommended solution (in Norway usually according to Norwegian Standard NS3451). At this stage all relevant principles and system solutions for all disciplines are stated, qualitatively and quantitatively. Estimated Life Cycle Cost (LCC) for the design shall be provided. All succeeding stages are in principle regarded as "production stages" (i.e. production drawings / models, the physical building, documentation). The full concept design level of detailing should be sufficient to avert later principle / system decisions with quality, progress or economic implications, unless a change is done in programming requirements. Further detailing and smaller changes of design solutions at later stages are considered to be normal and acceptable. | [Full conceptual design(5)] |
| 2.4 | Sub-Process (collapsed) | Design HVAC Systems (Coordinated) | The term "coordinated design" is the process of developing a detailed interdisciplinary coordinated design where design team deliverables include a building information model that contains characteristic product specification attributes (in Norway usually according to Norwegian Standard NS3420) suitable for a tender process, including supplementary demands for test procedures, component labeling, documentation etc. A number of additional reports may also be required (e.g. environmental issues reports, LCC according to Norwegian Standard NS3454, waste handling procedures, universal (handicapped friendly) design documentation etc). | [Coordinated design and procurement(6)] |
Role Overview
The primary roles shown in the process model diagram (as "swimlanes") are defined as:
- HVAC Design (RS)
- HVAC Construction (RS)
- Facilities Management (in this case, concerned with the electrical engineering aspects og facilities management)
2-1 - Design HVAC Systems (Programming) - HVAC Engineering (PM)
(Information Delivery Manual (IDM))
2-2 - Design HVAC Systems (Sketch) - HVAC Engineering (PM)
(Information Delivery Manual (IDM))
2-3 - Design HVAC Systems (Full Concept) - HVAC Engineering (PM)
(Information Delivery Manual (IDM))
2-4 - Design HVAC Systems (Coordinated) - HVAC Engineering (PM)
(Information Delivery Manual (IDM))