Detailed Building Life Cycle Water Usage Model

Class Name

• RDetailedBuildingLifeCycleWaterUsageModel

Location in Objects Pane

• Models > Model > Consequence > Environmental > Detailed Building Life Cycle Water Usage

Model Description

Model Form

• This model produces the lifecycle water usage in a building at a fine level of detail.
• Extraction and manufacturing phase
$${W_{EM}} = {W_P} + {W_t} = \sum {q{i_{wp}} + \sum {q{i_{wt}}d = \sum {q({i_{wp}} + {i_{wt}}d)} } } $$
• On-site construction phase
$${W_{oc}} = {t_{wh}}{w_{ioc}}$$
• Operation phase
$${W_{op}}= {t_d}{d_{yo}}{o_e}({i_{fl}}+{i_{mf}}{r_{mf}}+{i_{ff}}(1-{r_{mf}}))$$

DDM sensitivities

• No

Properties

Object Name

• Name of the object in Rt
• Allowable characters are upper-case and lower-case letters, numbers, and underscore (“_”).
• The name is unique and case-sensitive.

Display Output

• Determines whether the model is allowed to print messages to the Output Pane.

Concrete Quantity

• \({q}\) = Quantity of concrete including mortar and concrete 20MPa, whose units are converted to kg

Concrete W Intensity

• \({i_{wp}}\) = The water intensity of concrete materials defined as a variable with lognormal distribution

Concrete Transportation Distance

• \({d}\) = The distance travelled by concrete, including backhaul, defined as a random variable, in km

Concrete Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of concrete materials defined as a variable with lognormal distribution

Steel Quantity

• \({q}\) = Quantity of steel including nails, welded wire mesh, wide flange section, rebar, rod, light sections, sheet metal, whose units are converted to kg

Steel W Intensity

• \({i_{wp}}\) = The water intensity of steel materials defined as a variable with lognormal distribution

Steel Transportation Distance

• \({d}\) = The distance travelled by steel, including backhaul, defined as a random variable, in km

Steel Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of steel materials defined as a variable with lognormal distribution

Wood Quantity

• \({q}\) = Quantity of wood including small dimension lumber, softwood plywood, large dimension lumber , whose units are converted to kg

Wood W Intensity

• \({i_{wp}}\) = The water intensity of wooden materials defined as a variable with lognormal distribution

Wood Transportation Distance

• \({d}\) = The distance travelled by wood, including backhaul, defined as a random variable, in km

Wood Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of wooden materials defined as a variable with lognormal distribution

Gypsum Board Quantity

• \({q}\) = Quantity of Gypsum board including Gypsum wall 0.5” and 0.625”, whose units are converted to kg

Gypsum Board W Intensity

• \({i_{wp}}\) = The water intensity of Gypsum board defined as a variable with lognormal distribution

Gypsum Board Transportation Distance

• \({d}\) = The distance travelled by Gypsum board, including backhaul, defined as a random variable, in km

Gypsum Board Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of Gypsum board defined as a variable with lognormal distribution

Vapour Barrier Quantity

• \({q}\) = Quantity of vapor barrier including 6 mil polyethylene, EPDM membrane, whose units are converted to kg

Vapour Barrier W Intensity

• \({i_{wp}}\) = The water intensity of vapor barrier defined as a variable with lognormal distribution

Vapour Barrier Transportation Distance

• \({d}\) = The distance travelled by vapor barrier, including backhaul, defined as a random variable, in km

Vapour Barrier Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of vapor barrier defined as a variable with lognormal distribution

Insulation Quantity

• \({q}\) = Quantity of insulation including batt fibreglass, brick, vinyl siding glazing, whose units are converted to kg

Insulation W Intensity

• \({i_{wp}}\) = The water intensity of insulation materials defined as a variable with lognormal distribution

Insulation Transportation Distance

• \({d}\) = The distance travelled by insulation, including backhaul, defined as a random variable, in km

Insulation Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of insulation materials defined as a variable with lognormal distribution

Glass Quantity

• \({q}\) = Quantity of glass including glazing panel, low E Tin Argon filled glazing, whose units are converted to kg

Glass W Intensity

• \({i_{wp}}\) = The water intensity of glass materials defined as a variable with lognormal distribution

Glass Transportation Distance

• \({d}\) = The distance travelled by glass, including backhaul, defined as a random variable, in km

Glass Transportation W Intensity

• \({i_{wt}}\) = Transportation intensity of glass materials defined as a variable with lognormal distribution

Other Material Quantity

• \({q}\) = Quantity of other materials including aluminum, whose units are converted to kg

Other Material W Intensity

• \({i_{wp}}\) = The water intensity of other materials defined as a variable with lognormal distribution

Other Material Transportation Distance

• \({d}\) = The distance travelled by the other materials, including backhaul, defined as a random variable, in km

OtherMaterial Transportation W Intensity

• \({i_{wt}}\) = Transportation water intensity of other materials defined as a variable with lognormal distribution

Worker Hour W Intensity

• \({w_{ioc}}\) = The water intensity in L of water/worker hour

Total Worker Hours

• \({t_{wh}}\) = The total worker-hours required to complete construction activities

Days Yearly Operation

• \({d_{yo}}\) = The days of yearly operation of the building. for example, if the building is operated only 200 out of 365 days in a given year, dyo is equal to 200 days per year

Total Building Occupants

• \({o_e}\) = The total number of building occupants

Flow Fixture 1 W Demand

• \({i_{fl}}\) = The water demand for each flow fixture in L/occupant/day

Flush Male W Demand

• \({i_{mf}}\) = The daily water demand for male occupants for each flush fixture in L/male/day

Flush Female W Demand

• \({i_{ff}}\) = The daily water demand for female occupants for each flush fixture in L/female/day

Ratio Male Occupants

• \({r_{mf}}\) = The ratio of male occupants to total building occupants: normally 0.5 males to total building occupants

Design Life

• \({t_d}\) = The design life of the building in years

Output

• \({W}\) = The lifecycle water usage in a building in L
• The output is an automatically generated generic response object, which takes the object name of the model plus “Response”.

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• Removes the object.