Quantification and Costing Flashcards
What is NRM and the different parts?
New Rules of Measurement
- Guidance on quantification of building works for the purpose of preparing a cost estimate / plan
- Guidance notes on the detailed measurement and description of building works for a BOQ
- Guidance note on the quantification of maintenance works
What is the structure for NRM 1?
Part 1 – Cost estimating & Cost Planning in the context of RIBA Stages
Part 2 – Purpose & Content of order of Cost Estimates
Part 3 – Purpose & Content of formal cost plans
Part 4 – Tabulated measurement rules
What are the RIBA stages?
0 – strategic definition 1 – brief 2 – concept design 3 – spatial coordination 4 – technical design 5 – construction and manufacturing 6 – hand over 7 – use
What does IPMS stand for?
International property measurement statement
What is IPMS?
Guidance on how to measure office or residential property worldwide – 2nd Edition
Allows international clients to benchmark building areas against international portfolios
What methods of measurement are you aware of?
RICS Property Measurement 2nd Edition – most up to date
RICS Code of Measurement Practise – 6th Edition – applies to all building not office or residential
IPMS should be used for Office and Residential
Name 3 differences between IPMS and COMP?
IPMS includes window reveals (internal dominant face)
IPMS includes columns – limited use
IPMS includes internal non-structural walls in measure
IMPS includes external terraces but states them seperately
What are the main differences between IPMS and COMP referred to as?
limited use
What are types of cost estimate?
Floor area - £/m²
Functional unit - £/seat or £/room
Elemental
What information is required for a cost estimate?
Location of site Floor plan Roof plan Elevations Sections Storey height
What information is required for a formal cost plan?
Procurement Strategy Contract strategy Fees Budget Detailed design information
What are the elemental sections of NRM?
0 – Facilitating works 1 – Substructure 2 – Superstructure 3 – Internal Finishes 4 – FF&E 5 – Services 6 – Prefabricated Buildings and Building Units 7 – Works to Existing Buildings 8 – External Works 9 – Main Contractors Prelims 10 – Main Contractors OH&P 11 – Project / Design team fees 12 – Development / Project Costs 13 – Risks 14 - Inflation
How do you price design changes and variations differently to PTE?
Variations there are omits
Design changes there may not be.
How does location affect cost?
Availability of materials Availability of labour Transport costs Ease of access to site Availability of services to site Local labour costs Existing land conditions
What is the RICS COMP?
Code of Measuring Practise – UK measurement guidance note published by the RICS. Defines GEA, GIA and NIA and how to measure them correctly
6th edition published 2018
How do you quantify differently between a feasibility estimate and a cost plan?
Feasibility estimate will be based on functional units – usually just GAs and Facades
Cost estimate measured on a component basis
What did you advise the client were the differences between IPMS and COMP?
The window reveals and columns are different between IPMS 3 and NIA
What is benchmarking?
Systematic method of comparing project performance against others and ensuring lessons learnt from the best in class (benchmark)
Often mistaking for the average performance
What does BCIS stand for?
Building Cost Information Service
What levels of BCIS location indices are there?
Regional
County
District
What are some location indicies?
Aecom does their own; Northern Ireland – 0.75 Yorkshire – 0.86 Outer London – 1.00 Inner London – 1.06
Apart from Cost data what else do benchmarking reports cover?
The purpose of the exercise Scope of the exercise Methodology used in selection of comparative projects Exclusions Rebasing factors Main drivers for the results
What is a defined provisional sum?
Defined – A sum included in the contract sum for work that has not been completely designed at time of tender but for which certain specified information can be given. The contractor is to make a proper allowance for carrying out the works in their programme and prelims – CONTRACTORS RISK
What is an undefined provisional sum?
Undefined – A sum included in the contract for work which there is minimal or no information at time of tender. The contractor is not deemed to make a proper allowance in their programme or prelims for carrying out the works – EMPLOYERS RISK
What is a Prime Cost Sum?
A supply only rate for materials or goods where the precise quality of those goods or materials are unknown
PC Sums exclude all costs associated with fixing or installation, all ancillary and sundry materials for the fixing or installation, main contractor / sub-contractor prelims, OH&P, design fees, prelims etc
What are dayworks?
The method of valuing work on the basis of time spent by the contractor’s work people, the materials used and the plant employed
A contractor is paid for specifically instructed work on the basis of the cost of labour, materials and plant used plus a mark-up for overheads and profit
When would dayworks be used?
When unforeseen obstructions are encountered during groundworks
For instructed work where there are no comparative rates in a bill of quantities / CSA
What do you need for a defined provisional sum?
Any specific limitation
Location
Quantity
Method / nature of the works
What colour is spons?
Buildings / architecture - red
External works - green
M&E - blue
Civils - orange
Why not use NRM for area schedule rather than COMP or the property measurement?
NRM published in 2012 so doesnt include IPMS yet (1st edition 2015), only explain GIA and NIA
What are the levels of BIM?
Level 0 - Unmanaged CAD
Level 1 - Managed CAD in 2D and 3D
Level 2 - Collaberative 3D modelling
Level 3 - Yet to be defined - predicted to include cost and lifecycle elements
What is ICMS?
International Construction Measurement Standards
2nd Edition published 2019
What is ICMS used for?
Provides a single methodology for reporting, grouping and classifying project costs
International standard for benchmarking and reporting total project costs
