MicroMVDs for exchange requirements/Quantity take-off MicroMVD

The following MicroMVD vocabulary can be used to ensure that data is present for basic dimensional quantity take-off.

• Concrete material: "Concrete" in IfcMaterial.Category
• Concrete construction method: Pset_ConcreteElementGeneral.ConstructionMethod
• Strength class: Pset_ConcreteElementGeneral.StrengthClass
• Compressive strength: IfcMaterial.Pset_MaterialConcrete.CompressiveStrength

Feature: Quantity take-off

In order to cost elements
For cost planners
All elements need to have dimensional and cost-significant metadata assigned

Scenario: All concrete elements are identifiable and contain data
 * All concrete elements must be assigned to a concrete material
 * All concrete elements must have their construction method assigned with one of the following values:
   | Value   |
   | In-situ |
   | Precast |
   | {value} |
 * All concrete elements must have their strength class assigned with one of the following values:
   | Value   |
   | N       |
   | S       |
   | {value} |
 * All concrete materials must have their compressive strength assigned with one of the following values:
   | Value     |
   | 20000000  |
   | 25000000  |
   | 32000000  |
   | 40000000  |
   | 50000000  |
   | 65000000  |
   | 80000000  |
   | 100000000 |
   | {value}   |

Scenario: All blockwork walls are identifiable
 * All blockwork walls must be assigned to a block material

Scenario: All partition walls are identifiable
 * All partition walls must be assigned to a partition material

Scenario: All steel elements are identifiable and contain data
 * All steel elements must be assigned to a steel material
 * All steel elements must have a coating assigned with one of the following values:
   | Architectural  |
   | Fire resistant |
   | None           |
 * All steel elements must have a grade assigned with one of the following values:
   | 250 |
   | 300 |
   | 350 |
   | 400 |
   | 450 |

Scenario: All walls must have dimensional quantities
 * All in-situ concrete walls must have a Length, Height, NetVolume, and GrossSideArea quantity
 * All precast concrete walls must have a Length, Width, Height, and GrossSideArea quantity
 * All blockwork walls must have a Length, Width, Height, and GrossSideArea quantity
 * All partition walls must have a Length, Width, Height, and GrossSideArea quantity
 * All other walls must have a Length, Width, Height, and GrossSideArea quantity

Scenario: All slabs must have dimensional quantities
* All in-situ concrete slabs must have a Width, Length, Depth, Perimeter, GrossArea, and GrossVolume quantity
* All precast concrete slabs must have a Width, Length, Depth, Perimeter, GrossArea, and GrossVolume quantity
* All other slabs must have a GrossArea quantity

Scenario: All columns must have dimensional quantities
* All concrete columns must have a Length, OuterSurfaceArea, and GrossVolume quantity
* All steel columns must have a Length, OuterSurfaceArea, GrossVolume, and GrossWeight quantity
* All other columns must have a Length, OuterSurfaceArea, GrossVolume, and GrossWeight quantity

Scenario: All beams must have dimensional quantities
* All concrete beams must have a Length and GrossVolume quantity
* All steel beams must have a Length, OuterSurfaceArea, GrossVolume, and GrossWeight quantity
* All other beams must have a Length and GrossVolume quantity

Scenario: All foundations must have dimensional quantities
* All footings must have a Length, Width, Height, GrossSurfaceArea, and GrossVolume quantity
* All piles must have a Length, OuterSurfaceArea, GrossVolume, and GrossWeight quantity

Scenario: All other elements must have dimensional quantities
* All railings must have a Length quantity
* All openings must have a Width, Height, Depth, Area, and Volume quantity
* All stair flights must have a Length and GrossVolume quantity
* All structural members must have a Length, OuterSurfaceArea, GrossVolume, and GrossWeight quantity
* All reinforcement bars must have a Length and Weight quantity
* All reinforcement mesh must have a Length, Width, and Weight quantity
* All curtain wall panels must have a GrossArea quantity
* All windows must have an Area quantity
* All duct segments must have a Length, OuterSurfaceArea, and GrossWeight quantity
* All pipe segments must have a Length, OuterSurfaceArea, and GrossWeight quantity

You can fill out the variables using the guide below.

Variable	Example	Description
{file}	project.ifc	The filename or path to any IFC file.
{schema}	IFC4	The schema version. At the moment, these are likely to be either IFC4 or IFC2X3.

brick wall

finish: - none - render - paint

block walls

thickness: - 90 - 190 - 390

core filled: - none - 1.2m - full height

load bearing: - yes - no

stiffeners (if not modeled): - yes - no

reo bars: - yes - no

partition walls

plasterboard layer: - impact resistant (yes / no) - moisure resistant (yes / no) - fire rated (yes / no)

Pset_WallCommon.LoadBearing – True/False Pset_WallCommonAcousticRating – Rw / Rw + Ctr Pset_WallCommon.FireRating -/-/-