Quantification and Costing of Construction Works Flashcards Preview

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Flashcards in Quantification and Costing of Construction Works Deck (169)
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What is measurement?

The transformation of drawn information into descriptions and quantities, undertaken to value, cost and price construction work.


What are the different methods of measurement for a Cost Plan?

- Functional unit

- Floor area

- Elemental

- Approximate quantities

- Bill of quantities


What is the most commonly used standard of measurement?



What are the benefits of having a standard method of measurement?

- Provide structure for information

- Defines unit of measurement for different items, e.g. m, m2, m3, t

- Provides rules as to what is included within each item

- Defines terms used to avoid disputes

- Allows familiarity to development so measurement becomes quicker and easier

- Provides clear system of structuring other project information


What is SMM7?

Standard Methods of Measurement, superseded by NRM2


What is NRM1?

NRM1: Order of Cost Estimating and Cost Planning for Capital Building Works

NRM1 is a best practice guidance note offering guidance on the preparation of:

- Order of cost estimates
- Elemental cost models
- Cost plans
- Cost analyses
- Benchmark analyses
- Capturing historical cost data for order of cost estimates and elemental cost plans
- How to describe quantifying non-measurable items such as prelims, OH&P, fees, risk, inflation


How is NRM1 structured?

Part 1 - context and definitions

Part 2 - how to prepare an order of cost estimate

Part 3 -how to prepare an elemental cost plan

Part 4 - tabulated rules of measurement for preparing cost plans


What is NRM2?

NRM2: Detailed measurement for building works

NRM2 provides a set of detailed measurement rules for preparing a BoQ or schedules of rates for the purpose of obtaining a tender price.

It also deals with quantification of non-measurable work items, Contractor designed works and risks.

NRM2 also offers guidance on the content, structure and format of bills of quantities.


How is NRM2 structured?

Part 1: General - places measurement for works procurement in contrxt with RIBA PoW and OGC Gateway Process, explains symbols, abbreviations and definitions used in rules

Part 2: Rules for detailed measurement of building works - explains the function of BoQ, provides work breakdown structures for BoQ, defines information reqired to enable preparation of BoQ, describes key constituents of BoQ and how to prepare BoQ

Part 3: Tabulated rules of measurement for building works - comprises the majority of NRM2. Tabulated rules for measurement and description of building works.


What is in appendix A of NRM2?

Guidance on the preparation of BoQ


What is in Appendix A of NRM1?

Core definitions of GIA


What is in Appendix B of NRM1?

Commonly used functional units and functional units of measurement


What is in Appendix C of NRM1?

Core definitions of NIA


What is the RICS Code of Measurement Practice?

A guidance note that provides precise definitions to permit accurate measurement of buildings and land, the calculation of sizes, and description or specification of land and buildings on a common and consistent basis.



What is the GEA as defined in the Code of Measurement Practice and what does it include?

Gross External Area.

GEA is the area of a building measured externally at each floor level.

- Includes footprint of building (perimeter wall thickness, external projections)

- Includes internal balconies, columns, internal walls, lift rooms, horizontal floors below structural/stepped floors regardless of accessibility

- loading bays

- Areas with less headroom than 1.5m


What does GEA as defined in the Code of Measurement Practice exclude?

- External open-sided balconies, covered ways and fire escapes

- Canopies

- Open vehicle parking areas, roof terraces and the like

- Voids over or under structural structural, raked or stepped floors


What is the GIA in NRM and what does it include?

Gross Internal Area


- Areas occupied by internal walls and partitions

- Columns, piers, chimney breasts, stairwells, lift wells, vertical ducts and the like

- Structural, raked or stepped floors are to be
treated as a level floor measured horizontally

- Mezzanine floor areas with permanent access

- Service accommodation eg halls, toilets, changing rooms

- voids over stairwells and lift shafts on upper floors

- loading bays

- pavement vaults

- garages

- Atria and entrance halls, with clear height above,
measured at base level only


What does GIA in NRM exclude?

- Perimeter wall thicknesses and external

- External open-sided balconies, covered ways
and fire escapes

- Canopies

- Voids over or under structural, raked or
stepped floors

- Greenhouses, garden stores, fuel stores, and the
like in residential property


What functional unit of measurement would you use for car parks?

Cost/parking space


What unit of measurement would you use for measuring an office?

Cost/m2 of NIA


What unit of measurement may you use for schools?



What unit of measurement may you use for hospitals?

Cost/bed space


In the NRM, what is the definition of NIA and what does it include?

Net Internal Area


- Atria with clear height above, measured at
base level only

- Entrance Halls [in tenant area, not in common spaces]

- Notional lift lobbies and notional fire

- Built-in units, cupboards, and the like
occupying usable areas

- Ramps, sloping areas and steps within usable

- Areas occupied by ventilation/heating grilles

- Areas occupied by skirting and perimeter

- Areas occupied by non-structural walls
subdividing accommodation in sole occupancy

- Pavement vaults


What is excluded from NIA as defined in the NRM?

- Common areas such as hallways, landings, balconies

- Toilets, changing rooms, cleaners rooms and the like

- Lift rooms, plant rooms, tank rooms (other than
those of a trade process nature), fuel stores, and
the like

- Stairwells, Liftwells

- Internal structural walls, walls enclosing excluded areas

- Columns, piers etc

- Area occupied by permanent and continuous air conditioning, heating or cooling apparatus and ducting if it renders the area unusable

- The space occupied by permanent, intermittent
air-conditioning, heating or cooling apparatus
protruding 0.25m or more into the usable area

- Area with headroom less than 1.5m

- Areas rendered substantially unusable by vir tue
of having a dimension between opposite faces of
less than 0.25m

- Vehicle parking areas


What is the build up to an Elemental Cost Plan recommended in NRM?

0 - Facilitating Works
1 - Substructure
2 - Superstructure
3 - Internal Finishes
4 - FF&E (Fittings, Furnishings and Equipment)
5 - Services
6 - Prefabricated units
7 - Works to existing building
8 - External Works
9 - Main Contractor Prelims
10 - Main Contractor OH&P
11 - Project Design Team Fees
12 - Other development/project costs (e.g. cost to acquire land, planning fees, insurances)
13 - Risk
14 - Inflation


Where can you find the formal requirements needed to produce a Cost Plan at different stages?

NRM1 Appendix F


What is IPMS?

International Property Measurement Standards

Property Measurement Standards that supersede NRM. Building function specific.


When was the first IPMS released?

2014 - IPMS: Office Buildings


When was the residential volume of IPMS released?



What is IPMS1?

- The sum of the areas of each floor of a building measured to the outer perimeter of external construction features and reported on a floor by floor basis