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Model/recommendations/tests/test_costs.py

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from recommendations.Costs import Costs
from unittest.mock import Mock
import datetime
class TestCosts:
def test_cavity_wall_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
cwi_material = {
"description": "cwi",
"depth": 75,
"thermal_conductivity": 0.037,
"prime_cost": 5.17,
"material_cost": 5.62,
"labour_cost": 1.125,
"labour_hours_per_unit": 0.065,
}
cwi_results = costs.cavity_wall_insulation(
wall_area=95.9104281347967,
material=cwi_material,
)
assert cwi_results == {
'total': 1065.0661223512907, 'subtotal': 887.5551019594088, 'vat': 177.51102039188177,
'contingency': 63.396792997100626, 'preliminaries': 63.396792997100626, 'material': 539.0166061175574,
'profit': 126.79358599420125, 'labour_hours': 6.234177828761786, 'labour_cost': 94.95132385344874,
'labour_days': 0.38963611429761164
}
def test_loft_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
loft_material = {
"description": "Crown Loft Roll 44 glass fibre roll",
"depth": 270,
"thermal_conductivity": 0.044,
"prime_cost": None,
"material_cost": 5.91938,
"labour_cost": 1.96,
"labour_hours_per_unit": 0.11
}
loft_results = costs.loft_insulation(
floor_area=33.5,
material=loft_material,
)
assert loft_results == {
'total': 430.21445040000003, 'subtotal': 358.512042, 'vat': 71.70240840000001,
'contingency': 25.608003000000004, 'preliminaries': 25.608003000000004, 'material': 198.29923000000002,
'profit': 51.21600600000001, 'labour_hours': 3.685, 'labour_cost': 57.7808, 'labour_days': 0.460625
}
def test_internal_wall_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
iwi_non_insulation_materials = [
{'type': 'iwi_wall_demolition',
'description': 'Solid & Dry Lined walls: Hack of wall finishes with chipping hammer; plaster to walls.',
'depth': 0.0, 'depth_unit': 0.0, 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.0,
'thermal_conductivity_unit': 0.0, 'prime_material_cost': 0.0, 'material_cost': 0.0, 'labour_cost': 10.27,
'labour_hours_per_unit': 0.33, 'plant_cost': 1.28, 'total_cost': 11.55, 'link': 'SPONs', 'Notes': 0.0},
{'type': 'iwi_wall_demolition',
'description': 'Stud walls: Remove wall linings including battening behind; plasterboard and skim',
'depth': 0.0, 'depth_unit': 0.0, 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.0,
'thermal_conductivity_unit': 0.0, 'prime_material_cost': 0.0, 'material_cost': 0.0, 'labour_cost': 6.23,
'labour_hours_per_unit': 0.2, 'plant_cost': 1.25, 'total_cost': 7.48, 'link': 'SPONs', 'Notes': 0.0},
{'type': 'iwi_wall_demolition',
'description': 'Lathe and Plaster walls: Remove wall linings including battening behind; wood lath and '
'plaster',
'depth': 0.0, 'depth_unit': 0.0, 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.0,
'thermal_conductivity_unit': 0.0, 'prime_material_cost': 0.0, 'material_cost': 0.0, 'labour_cost': 6.85,
'labour_hours_per_unit': 0.22, 'plant_cost': 2.09, 'total_cost': 8.94, 'link': 'SPONs', 'Notes': 0.0},
{'Notes': "",
'cost_unit': "",
'depth': "",
'depth_unit': "",
'description': 'Visqueen High Performance Vapour Barrier',
'labour_cost': 0.48,
'labour_hours_per_unit': 0.02,
'link': 'SPONs',
'material_cost': 1.21,
'plant_cost': 0,
'prime_material_cost': 0.58,
'thermal_conductivity': "",
'thermal_conductivity_unit': "",
'total_cost': 1.69,
'type': 'iwi_vapour_barrier'},
{'Notes': "",
'cost_unit': "",
'depth': "",
'depth_unit': "",
'description': 'Plaster; one coat Thistle board finish or other equal; steel trowelled; 3 mm thick work '
'to walls or ceilings; one coat; to plasterboard base; over 600mm wide',
'labour_cost': 6.58,
'labour_hours_per_unit': 0.25,
'link': "",
'material_cost': 0.06,
'plant_cost': 0,
'prime_material_cost': 0.0,
'thermal_conductivity': "",
'thermal_conductivity_unit': "",
'total_cost': 6.64,
'type': 'iwi_redecoration'},
{'Notes': "",
'cost_unit': "",
'depth': "",
'depth_unit': "",
'description': 'Two coats emulsion paint on plaster, over 40mm girth; 3.5m - '
'5m high',
'labour_cost': 0.0,
'labour_hours_per_unit': 0.21,
'link': "",
'material_cost': 0.41,
'plant_cost': 0,
'prime_material_cost': "",
'thermal_conductivity': "",
'thermal_conductivity_unit': "",
'total_cost': 4.34,
'type': 'iwi_redecoration'},
{'Notes': "",
'cost_unit': "",
'depth': "",
'depth_unit': "",
'description': 'Fitting existing softwood skirting or architrave to new '
'frames; 150mm high',
'labour_cost': 4.87,
'labour_hours_per_unit': 0.01,
'link': "",
'material_cost': 4.86,
'plant_cost': 0,
'prime_material_cost': "",
'thermal_conductivity': "",
'thermal_conductivity_unit': "",
'total_cost': 4.88,
'type': 'iwi_redecoration'}
]
iwi_material = {
"type": "internal_wall_insulation",
"description": "Ecotherm Eco-Versal PIR Insulation Board",
"depth": 150,
"depth_unit": "mm",
"cost_unit": "gbp_per_m2",
"thermal_conductivity": 0.022,
"thermal_conductivity_unit": "watt_per_meter_kelvin",
"prime_material_cost": "",
"material_cost": 11.68,
"labour_cost": 3.12,
"labour_hours_per_unit": 0.18,
"plant_cost": "",
"total_cost": 14.8,
"link": "SPONs"
}
iwi_results = costs.internal_wall_insulation(
wall_area=95.9104281347967,
material=iwi_material,
non_insulation_materials=iwi_non_insulation_materials
)
assert iwi_results == {
'total': 6650.889456921851, 'subtotal': 5542.407880768209, 'vat': 1108.4815761536418,
'contingency': 573.3525393898148, 'preliminaries': 382.2350262598765,
'material': 1747.488000615996,
'profit': 764.470052519753, 'labour_hours': 88.23759388401297,
'labour_days': 2.757424808875405,
'labour_cost': 1927.1602026551818
}
def test_suspended_floor_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
sus_floor_material = {
'type': 'suspended_floor_insulation', 'description': 'Thermafleece CosyWool Roll',
'depth': 140.0,
'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.039,
'thermal_conductivity_unit': 'watt_per_meter_kelvin', 'prime_material_cost': 0,
'material_cost': 11.68, 'labour_cost': 1.78, 'labour_hours_per_unit': 0.1,
'plant_cost': 0,
'total_cost': 13.46, 'link': 'SPONs',
'Notes': 'Spons did not contain labour costs so we use values for similar insulations. '
'We use the '
'same values as in Crown loft roll 44, since it is also an insulation roll'
}
sus_floor_non_insulation_materials = [
{'type': 'suspended_floor_demolition', 'description': 'Removal of carpet and underfelt', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 3.32, 'labour_hours_per_unit': 0.11,
'plant_cost': 0, 'total_cost': 3.32, 'link': 'SPONs',
'Notes': 'We ignore the plant cost that is in SPONs because we assume the carpet is not scrapped and '
'therefore there is no need for a skip'},
{'type': 'suspended_floor_demolition',
'description': 'Remove boarding; withdraw nails; set aside for reuse; ground level', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 9.34, 'labour_hours_per_unit': 0.3,
'plant_cost': 0, 'total_cost': 9.34, 'link': 'SPONs', 'Notes': 0},
{'type': 'suspended_floor_vapour_barrier', 'description': 'Visqueen High Performance Vapour Barrier',
'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
'thermal_conductivity_unit': 0, 'prime_material_cost': 0.58, 'material_cost': 1.21, 'labour_cost': 0.48,
'labour_hours_per_unit': 0.02, 'plant_cost': 0, 'total_cost': 1.69, 'link': 'SPONs', 'Notes': 0},
{'type': 'suspended_floor_redecoration', 'description': 'refix floorboards previously set aside',
'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
'thermal_conductivity_unit': 0, 'prime_material_cost': 0, 'material_cost': 1.54, 'labour_cost': 24.98,
'labour_hours_per_unit': 0.74, 'plant_cost': 0, 'total_cost': 26.52, 'link': 'SPONs', 'Notes': 0},
{'type': 'suspended_floor_redecoration', 'description': 'Fitting carpet', 'depth': 0, 'depth_unit': 0,
'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 6.59, 'labour_hours_per_unit': 0.37,
'plant_cost': 0, 'total_cost': 6.59, 'link': 'SPONs',
'Notes': 'SPONs does not have data on re-fitting the carpet so we use the data in Fitted carpeting; '
'Gradus woven polypropylene tufted loop\n\n as a baseline. We assume re-use of carpets, '
'therefore we need just labour rates'}]
sus_floor_results = costs.suspended_floor_insulation(
insulation_floor_area=33.5,
material=sus_floor_material,
non_insulation_materials=sus_floor_non_insulation_materials
)
assert sus_floor_results == {
'total': 3337.07436, 'subtotal': 2780.8953, 'vat': 556.17906, 'contingency': 370.78604,
'preliminaries': 185.39302, 'material': 483.405, 'profit': 370.78604, 'labour_hours': 54.940000000000005,
'labour_days': 2.289166666666667, 'labour_cost': 1370.5252
}
def test_solid_floor_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
sol_floor_material = {
'type': 'solid_floor_insulation', 'description': 'Kay-Cel Expanded Polystyrene Board',
'depth': 100.0, 'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.033,
'thermal_conductivity_unit': 'watt_per_meter_kelvin', 'prime_material_cost': 0,
'material_cost': 12.02, 'labour_cost': 4.4, 'labour_hours_per_unit': 0.19, 'plant_cost': 0,
'total_cost': 16.42, 'link': 'SPONs', 'Notes': 0
}
sol_floor_non_insulation_materials = [
{'type': 'solid_floor_demolition', 'description': 'Removal of carpet and underfelt', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 3.32, 'labour_hours_per_unit': 0.11,
'plant_cost': 0, 'total_cost': 3.32, 'link': 'SPONs',
'Notes': 'We ignore the plant cost that is in SPONs because we assume the carpet is not scrapped and '
'therefore there is no need for a skip'},
{'type': 'solid_floor_preparation',
'description': 'clean surface of concrete to receive new damp-proof membrane', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 4.36, 'labour_hours_per_unit': 0.14,
'plant_cost': 0, 'total_cost': 4.36, 'link': 0, 'Notes': 0}, {
'type': 'solid_floor_preparation',
'description': 'Clean out crack to '
'form a 20mm×20mm '
'groove and fill with '
'cement: mortar mixed '
'with bonding agent',
'depth': 0, 'depth_unit': 0,
'cost_unit': 0,
'thermal_conductivity': 0,
'thermal_conductivity_unit': 0,
'prime_material_cost': 0,
'material_cost': 6.91,
'labour_cost': 18.99,
'labour_hours_per_unit': 0.61,
'plant_cost': 0.16,
'total_cost': 26.06, 'link': 0,
'Notes': 'This step is the '
'assessment and repair of '
'any damage to the concrete '
'floor such as filling '
'cracks or levelling uneven '
'areas'},
{'type': 'solid_floor_vapour_barrier', 'description': 'Visqueen High Performance Vapour Barrier',
'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
'thermal_conductivity_unit': 0, 'prime_material_cost': 0.58, 'material_cost': 1.21, 'labour_cost': 0.48,
'labour_hours_per_unit': 0.02, 'plant_cost': 0, 'total_cost': 1.69, 'link': 'SPONs', 'Notes': 0},
{'type': 'solid_floor_redecoration',
'description': 'Screeded beds; protection to compressible formwork exceeding 600mm wide', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 9.6, 'material_cost': 9.89, 'labour_cost': 2.67, 'labour_hours_per_unit': 0.15,
'plant_cost': 0, 'total_cost': 12.56, 'link': 'SPONs',
'Notes': 'This is the screed layer, placed on top of the insulation'},
{'type': 'solid_floor_redecoration', 'description': 'Fitting carpet', 'depth': 0, 'depth_unit': 0,
'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 6.59, 'labour_hours_per_unit': 0.37,
'plant_cost': 0, 'total_cost': 6.59, 'link': 'SPONs',
'Notes': 'SPONs does not have data on re-fitting the carpet so we use the data in Fitted carpeting; '
'Gradus woven polypropylene tufted loop\n\n as a baseline. We assume re-use of carpets, '
'therefore we need just labour rates'},
{'type': 'solid_floor_redecoration',
'description': 'Fitting existing softwood skirting or architrave to new frames; 150mm high', 'depth': 0,
'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0.01, 'labour_cost': 4.87, 'labour_hours_per_unit': 0.12,
'plant_cost': 0, 'total_cost': 4.88, 'link': 'SPONs', 'Notes': 0}
]
sol_floor_results = costs.solid_floor_insulation(
insulation_floor_area=33.5,
material=sol_floor_material,
non_insulation_materials=sol_floor_non_insulation_materials
)
assert sol_floor_results == {
'total': 4245.023520000001, 'subtotal': 3537.5196, 'vat': 707.5039200000001, 'contingency': 471.66928,
'preliminaries': 235.83464, 'material': 1006.3399999999999, 'profit': 471.66928, 'labour_hours': 57.285,
'labour_days': 2.386875, 'labour_cost': 1346.6464
}
def test_external_wall_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire",
"property-type": "House",
"built-form": 'End-Terrace'
}
costs = Costs(mock_property)
ewi_material = {
'type': 'external_wall_insulation', 'description': 'Ecotherm Eco-Versal PIR Insulation Board',
'depth': 150.0, 'depth_unit': 'mm', 'cost_unit': 'gbp_per_m2', 'thermal_conductivity': 0.022,
'thermal_conductivity_unit': 'watt_per_meter_kelvin', 'prime_material_cost': 23.53,
'material_cost': 34.62, 'labour_cost': 33.06, 'labour_hours_per_unit': 1.4, 'plant_cost': 0,
'total_cost': 67.68, 'link': 'SPONs', 'Notes': 0
}
ewi_non_insulation_materials = [
{'type': 'ewi_wall_demolition',
'description': 'Solid & Dry Lined walls: Hack of wall finishes with chipping '
'hammer; plaster to walls.',
'depth': 0, 'depth_unit': 0, 'cost_unit': 'gbp_per_m2',
'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 10.27,
'labour_hours_per_unit': 0.33, 'plant_cost': 1.28, 'total_cost': 11.55,
'link': 'SPONs', 'Notes': 0}, {'type': 'ewi_wall_demolition',
'description': 'Stud walls: Remove wall linings '
'including battening behind; '
'plasterboard and skim',
'depth': 0, 'depth_unit': 0,
'cost_unit': 'gbp_per_m2',
'thermal_conductivity': 0,
'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0,
'labour_cost': 6.23, 'labour_hours_per_unit': 0.2,
'plant_cost': 1.25, 'total_cost': 7.48,
'link': 'SPONs', 'Notes': 0},
{'type': 'ewi_wall_demolition',
'description': 'Lathe and Plaster walls: Remove wall linings including battening '
'behind; wood lath and plaster',
'depth': 0, 'depth_unit': 0, 'cost_unit': 'gbp_per_m2',
'thermal_conductivity': 0, 'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 0, 'labour_cost': 6.85,
'labour_hours_per_unit': 0.22, 'plant_cost': 2.09, 'total_cost': 8.94,
'link': 'SPONs', 'Notes': 0}, {'type': 'ewi_wall_preparation',
'description': 'Clean and prepare surfaces, '
'one coat Keim dilution, '
'one coat primer and two coats '
'of Keim Ecosil paint; Brick or '
'block walls; over 300 mm girth',
'depth': 0, 'depth_unit': 0, 'cost_unit': 0,
'thermal_conductivity': 0,
'thermal_conductivity_unit': 0,
'prime_material_cost': 0, 'material_cost': 7.3,
'labour_cost': 5.62, 'labour_hours_per_unit': 0.3,
'plant_cost': 0, 'total_cost': 12.92,
'link': 'SPONs',
'Notes': 'This work covers the preparation and '
'priming of the wall before insulating'},
{'type': 'ewi_wall_redecoration',
'description': 'EPS insulation fixed with adhesive to SFS structure (measured '
'separately) with horizontal PVC intermediate track and vertical '
'T-spines; with glassfibre mesh reinforcement embedded in Sto '
'Armat Classic Basecoat Render and Stolit K 1.5 Decorative '
'Topcoat Render (white)',
'depth': 0, 'depth_unit': 0, 'cost_unit': 0, 'thermal_conductivity': 0,
'thermal_conductivity_unit': 0, 'prime_material_cost': 0, 'material_cost': 0,
'labour_cost': 0, 'labour_hours_per_unit': 0, 'plant_cost': 0,
'total_cost': 69.94, 'link': 'SPONs',
'Notes': 'This material in SPONs is for 70mm EPS insulation, which comes in at a '
'cost of 99.17 per meter square. This includes the cost of insulation. '
'To get the costing for just the works and not the insulation, '
'we subtract the cost of EPS insulation, using Ravathem 75mm insulation '
'as an example, which costs £29.23 per meter square, giving us the cost '
'of the remaining works without insulation. This material gives us a '
'cost for basecoat, mesh application and a render finish'}]
ewi_results = costs.external_wall_insulation(
wall_area=95.9104281347967,
material=ewi_material,
non_insulation_materials=ewi_non_insulation_materials
)
assert ewi_results == {
'total': 14561.688989159393, 'subtotal': 12134.740824299493, 'vat': 2426.948164859899,
'contingency': 808.9827216199662, 'preliminaries': 1617.9654432399325, 'material': 4020.565147410677,
'profit': 1617.9654432399325, 'labour_hours': 187.02533486285358, 'labour_days': 5.8445417144641745,
'labour_cost': 3921.5600094613983
}
def test_flat_roof_insulation(self):
mock_property = Mock()
mock_property.data = {
"county": "Northamptonshire"
}
costs = Costs(mock_property)
flat_roof_material = {'id': 1225, 'type': 'flat_roof_insulation',
'description': 'Kingspan Thermaroof TR21 zero OPD '
'urethene insulation board',
'depth': 100.0, 'depth_unit': 'mm', 'cost': None,
'cost_unit': 'gbp_per_m2', 'r_value_per_mm': 0.04,
'r_value_unit': 'square_meter_kelvin_per_watt',
'thermal_conductivity': 0.025,
'thermal_conductivity_unit': 'watt_per_meter_kelvin',
'link': 'SPONs',
'created_at': "now", 'is_active': True,
'prime_material_cost': None, 'material_cost': 50.95,
'labour_cost': 10.66, 'labour_hours_per_unit': 0.48,
'plant_cost': 0.0, 'total_cost': 61.61,
'notes': "SPONs didn't have a labour hours so we use "
"0.48 which is similar to other materials"}
flat_roof_non_insulation_materials = [
{'id': 17, 'type': 'mechanical_ventilation', 'description': 'Mechanical Extract Ventilation', 'depth': None,
'depth_unit': None, 'cost': 500, 'cost_unit': 'gbp_per_unit', 'r_value_per_mm': None, 'r_value_unit': None,
'thermal_conductivity': None, 'thermal_conductivity_unit': None, 'link': None,
'created_at': datetime.datetime(2023, 10, 18, 16, 39, 9, 827188), 'is_active': True,
'prime_material_cost': None,
'material_cost': None, 'labour_cost': None, 'labour_hours_per_unit': None, 'plant_cost': None,
'total_cost': None,
'notes': None},
{'id': 1221, 'type': 'flat_roof_preparation',
'description': 'clean surface to receive new damp-proof membrane',
'depth': 0.0, 'depth_unit': None, 'cost': None, 'cost_unit': 'gbp_per_m2', 'r_value_per_mm': None,
'r_value_unit': 'square_meter_kelvin_per_watt', 'thermal_conductivity': None,
'thermal_conductivity_unit': None,
'link': 'SPONs', 'created_at': datetime.datetime(2023, 12, 4, 20, 1, 49, 298076), 'is_active': True,
'prime_material_cost': None, 'material_cost': 0.0, 'labour_cost': 4.36, 'labour_hours_per_unit': 0.14,
'plant_cost': 0.0, 'total_cost': 4.36,
'notes': 'This data is based on concrete however forms a decent baseline for a Bituminous Felt flat roof'},
{'id': 1223, 'type': 'flat_roof_preparation',
'description': 'One coat primer; on wood surfaces before fixing; General surfaces; over 300 mm girth',
'depth': 0.0, 'depth_unit': None, 'cost': None, 'cost_unit': 'gbp_per_m2', 'r_value_per_mm': None,
'r_value_unit': 'square_meter_kelvin_per_watt', 'thermal_conductivity': None,
'thermal_conductivity_unit': None,
'link': 'SPONs', 'created_at': datetime.datetime(2023, 12, 4, 20, 1, 49, 298076), 'is_active': True,
'prime_material_cost': None, 'material_cost': 2.49, 'labour_cost': 1.5, 'labour_hours_per_unit': 0.08,
'plant_cost': 0.0, 'total_cost': 3.99, 'notes': 'SPONs data gives us a baseline for a wood surface'},
{'id': 1224, 'type': 'flat_roof_vapour_barrier', 'description': 'Visqueen High Performance Vapour Barrier',
'depth': 0.0, 'depth_unit': None, 'cost': None, 'cost_unit': 'gbp_per_m2', 'r_value_per_mm': None,
'r_value_unit': 'square_meter_kelvin_per_watt', 'thermal_conductivity': None,
'thermal_conductivity_unit': None,
'link': 'SPONs', 'created_at': datetime.datetime(2023, 12, 4, 20, 1, 49, 298076), 'is_active': True,
'prime_material_cost': 0.58, 'material_cost': 1.21, 'labour_cost': 0.48, 'labour_hours_per_unit': 0.02,
'plant_cost': 0.0, 'total_cost': 1.69, 'notes': None},
{'id': 1234, 'type': 'flat_roof_waterproofing',
'description': '20 mm thick two coat coverings; felt isolating membrane; to concrete (or '
'timber) base; flat or to falls or slopes not exceeding 10° from horizontal',
'depth': 0.0, 'depth_unit': None, 'cost': None, 'cost_unit': 'gbp_per_m2', 'r_value_per_mm': None,
'r_value_unit': 'square_meter_kelvin_per_watt', 'thermal_conductivity': None,
'thermal_conductivity_unit': None, 'link': 'SPONs',
'created_at': datetime.datetime(2023, 12, 4, 20, 1, 49, 298076), 'is_active': True,
'prime_material_cost': None, 'material_cost': 0.0, 'labour_cost': 0.0,
'labour_hours_per_unit': 0.5, 'plant_cost': 0.0, 'total_cost': 31.13, 'notes': None}
]
flat_roof_floor_results = costs.flat_roof_insulation(
floor_area=33.5,
material=flat_roof_material,
non_insulation_materials=flat_roof_non_insulation_materials
)
assert flat_roof_floor_results == {'total': 5325.327767999999, 'subtotal': 4437.773139999999,
'vat': 887.5546279999999, 'contingency': 459.07998,
'preliminaries': 306.05332, 'material': 1830.775, 'profit': 612.10664,
'labour_hours': 24.79, 'labour_days': 1.549375, 'labour_cost': 186.9032}
assert costs.labour_adjustment_factor == 0.88
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