Growth Model

The growth model will assess changes in the residential and business communities. Residential changes will be measured as population or dwelling numbers. Business changes will be measured as gross floor area (preferred) or employees. Large businesses may be measured on actual and projected demand.

The growth model will present the growth in at least each five year period (recommended to be each year up to the end of the LTCCP) by planning units in the community. A number of these planning units will be combined to make up the contributing Catchments for DC charging purposes.

Catchment is a term to describe the area of specific DC charges within a Sub-activity service area. For each Sub-activity there will be an assignment of a number of Localities to each charging catchments. This assignment will relate growth changes in the community to each Sub-activity and to each catchment within the Sub-activity. The catchment will represent an area within a Sub-activity service area where specific benefits apply.

The specific physical place where a Project (or part of a Project) will occur. The Locality does not necessarily identify who will receive the services, or who will ultimately fund the project. See Catchment for further discussion.

A Project is a temporary endeavor undertaken to create a unique product or service defined by a specific set of deliverables.

A project involves the selection of specific components for maintenence or renewal activities, with a budget allocated to cover the cost of the project.

A series of Projects, combine to form a Programme.

A Sub-activity is a specific maintenance or renewal category under which Programmes and Projects can be defined e.g stormwater.

A Sub-activity comprises a set of related Programmes which collectively deliver an overall change for the business.

Equivalences

Residential and business uses are both charged DCs. To ensure an equitable assessment of the charges it is necessary to express the residential and business demands in a common unit. This common unit is the Household Unit Equivalent (HUE). The growth model is adjusted to report both residential and business demands in the common unit, HUE.

Example

Where a household demand for Water Supply is on average 600 litres/day then for the Activity Water Supply the measure of the HUE is 600 litres/day.

The equivalence multiplier (Equivalence) for each activity and business use is the measure of the number of HUEs of demand required by each m² of business floor area (where business growth is reported by m² of floor area). The equivalence varies for each business use and for each activity

Residential and business uses are both charged DCs. To ensure an equitable assessment of the charges it is necessary to express the residential and business demands in a common unit. This common unit is the Household Unit Equivalent (HUE). The growth model is adjusted to report both residential and business demands in the common unit, HUE.

Thus where a particular business use has a demand of 2 litres/day/m² the equivalence will be

Growth Model Set Up

Creation of the Growth Model requires some initial data set up:

• Creation of Growth Model and Catchment Scenarios
• Creation of Catchment structures
• Import of Growth Model data
• Definition of Equivalence factors