Class: AddCostPerFloorAreaToBuilding

Inherits:
OpenStudio::Measure::ModelMeasure
  • Object
show all
Defined in:
lib/measures/AddCostPerFloorAreaToBuilding/measure.rb

Overview

start the measure

Instance Method Summary collapse

Instance Method Details

#arguments(model) ⇒ Object

define the arguments that the user will input



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 32

def arguments(model)
  args = OpenStudio::Measure::OSArgumentVector.new

  # make an argument to remove existing costs
  remove_costs = OpenStudio::Measure::OSArgument.makeBoolArgument('remove_costs', true)
  remove_costs.setDisplayName('Remove Existing Costs')
  remove_costs.setDefaultValue(true)
  args << remove_costs

  # make an argument for material and installation cost
  lcc_name = OpenStudio::Measure::OSArgument.makeStringArgument('lcc_name', true)
  lcc_name.setDisplayName('Name for Life Cycle Cost Object')
  lcc_name.setDefaultValue('Building - Life Cycle Costs')
  args << lcc_name

  # make an argument for material and installation cost
  material_cost_ip = OpenStudio::Measure::OSArgument.makeDoubleArgument('material_cost_ip', true)
  material_cost_ip.setDisplayName('Material and Installation Costs for Construction per Area Used')
  material_cost_ip.setUnits('$/ft^2')
  material_cost_ip.setDefaultValue(0.0)
  args << material_cost_ip

  # make an argument for demolition cost
  demolition_cost_ip = OpenStudio::Measure::OSArgument.makeDoubleArgument('demolition_cost_ip', true)
  demolition_cost_ip.setDisplayName('Demolition Costs for Construction per Area Used')
  demolition_cost_ip.setUnits('$/ft^2')
  demolition_cost_ip.setDefaultValue(0.0)
  args << demolition_cost_ip

  # make an argument for duration in years until costs start
  years_until_costs_start = OpenStudio::Measure::OSArgument.makeIntegerArgument('years_until_costs_start', true)
  years_until_costs_start.setDisplayName('Years Until Costs Start')
  years_until_costs_start.setUnits('whole years')
  years_until_costs_start.setDefaultValue(0)
  args << years_until_costs_start

  # make an argument to determine if demolition costs should be included in initial building
  demo_cost_initial_const = OpenStudio::Measure::OSArgument.makeBoolArgument('demo_cost_initial_const', true)
  demo_cost_initial_const.setDisplayName('Demolition Costs Occur During Initial Construction')
  demo_cost_initial_const.setDefaultValue(false)
  args << demo_cost_initial_const

  # make an argument for expected life
  expected_life = OpenStudio::Measure::OSArgument.makeIntegerArgument('expected_life', true)
  expected_life.setDisplayName('Expected Life')
  expected_life.setUnits('whole years')
  expected_life.setDefaultValue(20)
  args << expected_life

  # make an argument for o&m cost
  om_cost_ip = OpenStudio::Measure::OSArgument.makeDoubleArgument('om_cost_ip', true)
  om_cost_ip.setDisplayName('O & M Costs for Construction per Area Used')
  om_cost_ip.setUnits('$/ft^2')
  om_cost_ip.setDefaultValue(0.0)
  args << om_cost_ip

  # make an argument for o&m frequency
  om_frequency = OpenStudio::Measure::OSArgument.makeIntegerArgument('om_frequency', true)
  om_frequency.setDisplayName('O & M Frequency')
  om_frequency.setUnits('whole years')
  om_frequency.setDefaultValue(1)
  args << om_frequency

  # TODO: - would be nice to have argument to subtract any other costs in the project, so that the cost set here is the total cost per sqft for the project, without having to manually subtract object costed in the model. would br tricky for o&m

  return args
end

#description ⇒ Object 



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 20

def description
  return 'This measure will create life cycle cost objects associated with a the building. You can set a material and installation cost, demolition cost, and O&M costs. Optionally existing cost objects already associated with building can be deleted. This measure will not affect energy use of the building.'
end

#modeler_description ⇒ Object

human readable description of modeling approach



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 25

def modeler_description
  return "In addition to the inputs for the cost values, a number of other inputs are exposed to specify when the cost first occurs and at what frequency it occurs in the future. This measure is intended to be used as an 'Always Run' measure to apply costs to the baseline simulation before any design alternatives manipulate it. This will allow you to show the full cost for your baseline building without having to manually cost all individual objects. You could include construction costs, land, design fees, or anything else you want.

For baseline costs, 'Years Until Costs Start' indicates the year that the capital costs first occur. For new construction this will be typically be 0 and 'Demolition Costs Occur During Initial Construction' will be 'false'. For a retrofit 'Years Until Costs Start' is between 0 and the 'Expected Life' of the object, while 'Demolition Costs Occur During Initial Construction' is true.  O&M cost and frequency can be whatever is appropriate for the component."
end

#name ⇒ Object

define the name that a user will see, this method may be deprecated as the display name in PAT comes from the name field in measure.xml



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 16

def name
  return 'Add Cost per Floor Area to Building'
end

#neat_numbers(number, roundto = 2) ⇒ Object

short def to make numbers pretty (converts 4125001.25641 to 4,125,001.26 or 4,125,001). The definition be called through this measure



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 149

def neat_numbers(number, roundto = 2) # round to 0 or 2)
  if roundto == 2
    number = format '%.2f', number
  else
    number = number.round
  end
  # regex to add commas
  number.to_s.reverse.gsub(/([0-9]{3}(?=([0-9])))/, '\\1,').reverse
end

#run(model, runner, user_arguments) ⇒ Object

define what happens when the measure is run



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# File 'lib/measures/AddCostPerFloorAreaToBuilding/measure.rb', line 101

def run(model, runner, user_arguments)
  super(model, runner, user_arguments)

  # use the built-in error checking
  if !runner.validateUserArguments(arguments(model), user_arguments)
    return false
  end

  # assign the user inputs to variables
  remove_costs = runner.getBoolArgumentValue('remove_costs', user_arguments)
  lcc_name = runner.getStringArgumentValue('lcc_name', user_arguments)
  material_cost_ip = runner.getDoubleArgumentValue('material_cost_ip', user_arguments)
  demolition_cost_ip = runner.getDoubleArgumentValue('demolition_cost_ip', user_arguments)
  years_until_costs_start = runner.getIntegerArgumentValue('years_until_costs_start', user_arguments)
  demo_cost_initial_const = runner.getBoolArgumentValue('demo_cost_initial_const', user_arguments)
  expected_life = runner.getIntegerArgumentValue('expected_life', user_arguments)
  om_cost_ip = runner.getDoubleArgumentValue('om_cost_ip', user_arguments)
  om_frequency = runner.getIntegerArgumentValue('om_frequency', user_arguments)

  # set flags to use later
  costs_requested = false
  costs_removed = false

  # define building
  building = model.getBuilding

  # check costs for reasonableness
  if material_cost_ip.abs + om_cost_ip.abs == 0
    runner.registerInfo('No costs were requested for the building.')
  else
    costs_requested = true
  end

  # check lifecycle arguments for reasonableness
  if (years_until_costs_start < 0) && (years_until_costs_start > expected_life)
    runner.registerError('Years until costs start should be a non-negative integer less than Expected Life.')
    return false
  end
  if (expected_life < 1) && (expected_life > 100)
    runner.registerError('Choose an integer greater than 0 and less than or equal to 100 for Expected Life.')
    return false
  end
  if om_frequency < 1
    runner.registerError('Choose an integer greater than 0 for O & M Frequency.')
    return false
  end

  # short def to make numbers pretty (converts 4125001.25641 to 4,125,001.26 or 4,125,001). The definition be called through this measure
  def neat_numbers(number, roundto = 2) # round to 0 or 2)
    if roundto == 2
      number = format '%.2f', number
    else
      number = number.round
    end
    # regex to add commas
    number.to_s.reverse.gsub(/([0-9]{3}(?=([0-9])))/, '\\1,').reverse
  end

  # reporting initial condition of model
  runner.registerInitialCondition("The Building has #{building.lifeCycleCosts.size} lifecycle cost objects.")

  # remove any component cost line items associated with the construction.
  if !building.lifeCycleCosts.empty? && (remove_costs == true)
    runner.registerInfo('Removing existing lifecycle cost objects associated with the building.')
    removed_costs = building.removeLifeCycleCosts
    costs_removed = !removed_costs.empty?
  end

  # show as not applicable if no cost requested and if no costs removed
  if (costs_requested == false) && (costs_removed == false)
    runner.registerAsNotApplicable('No new lifecycle costs objects were requested, and no costs were deleted.')
  end

  # add lifeCycleCost objects if there is a non-zero value in one of the cost arguments
  if costs_requested == true

    # converting doubles to si values from ip
    material_cost_si = OpenStudio.convert(OpenStudio::Quantity.new(material_cost_ip, OpenStudio.createUnit('1/ft^2').get), OpenStudio.createUnit('1/m^2').get).get.value
    demolition_cost_si = OpenStudio.convert(OpenStudio::Quantity.new(demolition_cost_ip, OpenStudio.createUnit('1/ft^2').get), OpenStudio.createUnit('1/m^2').get).get.value
    om_cost_si = OpenStudio.convert(OpenStudio::Quantity.new(om_cost_ip, OpenStudio.createUnit('1/ft^2').get), OpenStudio.createUnit('1/m^2').get).get.value

    # adding new cost items
    lcc_mat = OpenStudio::Model::LifeCycleCost.createLifeCycleCost("LCC_Mat - #{lcc_name}", building, material_cost_si, 'CostPerArea', 'Construction', expected_life, years_until_costs_start)
    if demo_cost_initial_const
      lcc_demo = OpenStudio::Model::LifeCycleCost.createLifeCycleCost("LCC_Demo - #{lcc_name}", building, demolition_cost_si, 'CostPerArea', 'Salvage', expected_life, years_until_costs_start)
    else
      lcc_demo = OpenStudio::Model::LifeCycleCost.createLifeCycleCost("LCC_Demo - #{lcc_name}", building, demolition_cost_si, 'CostPerArea', 'Salvage', expected_life, years_until_costs_start + expected_life)
    end
    lcc_om = OpenStudio::Model::LifeCycleCost.createLifeCycleCost("LCC_OM - #{lcc_name}", building, om_cost_si, 'CostPerArea', 'Maintenance', om_frequency, 0)

  end

  # loop through lifecycle costs getting total costs under "Construction category"
  bldg_LCCs = building.lifeCycleCosts
  bldg_total_mat_cost = 0
  bldg_LCCs.each do |bldg_LCC|
    if bldg_LCC.category == 'Construction'
      bldg_total_mat_cost += bldg_LCC.totalCost
    end
  end

  # reporting final condition of model
  if !building.lifeCycleCosts.empty?
    costed_area_ip = OpenStudio.convert(OpenStudio::Quantity.new(building.lifeCycleCosts[0].costedArea.get, OpenStudio.createUnit('m^2').get), OpenStudio.createUnit('ft^2').get).get.value
    runner.registerFinalCondition("A new lifecycle cost object was added to the building. The building has an area of #{neat_numbers(costed_area_ip, 0)} (ft^2). Material and Installation costs are $#{neat_numbers(bldg_total_mat_cost, 0)}.")
  else
    runner.registerFinalCondition('There are no lifecycle cost objects associated with the building.')
  end

  return true
end