Quantification And Costing Flashcards
Talk me through NRM and differences between 1,2 and 3.
NRM_1 Order of cost estimating and cost planning
NRM_2 Detailed measurement for building works
NRM_3_Building Maintenance Works
What is IPMS and its purpose?
International property measurement standards. Introduced to standardise property measurement across the world
Can you tell me what the difference between NRM 1 and 2 are and how this differs from the RICS Code of Measurement.
RICS code of measurement practice is now obsolete but described the different areas used in property.
NRM is measurement rules for construction and lifecycle costing work.
If I was a developer and told you that I had a site in the middle of London which I wanted to build a residential block on what would you advise me in relation to cost.
I would say this depends on site considerations, the method of construction, the procurement and the design, however most residential projects in London range between £2500 to £3500/M2 GIFA.
How do you quantify internal partitions?
Section 2.7 of NRM1. details including thickness to be stated. Measured in m2 on the centre line. No deduction made for openings.
How do you measure steel. What is the current cost?
Measure beams, columns, upper floors, steel members. Understand kg/m or m2 to equate to an over tonnage for each member
£1,000/tonne
What are the ways of valuing change?
- Similar nature – use pricing schedule
- Contractors quotes
- Dayworks
- First principle
- Schedule 2 quote
When did the IPMS residential come into effect and why?
May 2015.
Standardised approach
Consistent method of measurement
Guidance to measure
What is the difference between IPMS and code of measurement practice?
IPMS defines GEA, GIA and NIA as IPMS 1, IPMS 2, IPMS3.
It uses the internal dominant face
Do you know the valuation rules for changes in the JCT contract?
- Similar nature – use pricing schedule
- Fair and reasonable
- Day works
What is a schedule 2 quotation?
The procedure in Schedule 2 aims to regulate the prices of quotations submitted by the contractor.
What is the rule for variations under the adjusted bill rates under JCT?
If the conditions under which the work is carried out or the quantities of work are changed by the variation, the valuation of that variation is based on bill rates with a ‘fair’ allowance made for the difference in conditions and/or quantity
E.g. if substructure work is due to be done in summer but is then in winter, the cost may be different because of weather related issues and shorter days etc.
What is the rule for variations under dayworks in JCT?
If variations cannot be properly measured they can be valued on a ‘daywork’ basis.
These can be valued as:
Option 1 - Percentage addition (prime cost to which a % is added for OHP)
Option 2 - All inclusive rates (quoted at tender and incorporated in the contract documents. Include allowance for OHP)
What are the benefits of having a standard method of measurement?
1) Provides structure for information
2) Defines units of measurement for different items (m, m2, m3, t)
3) Provides rules as to what is included within each item
4) Defines terms used to avoid disputes
5) Allows familiarity to development so measurement becomes quicker and easier
6) Provides clear system of structuring other project information
What is a Prime Cost Sum?
The term ‘prime cost sum’ (PC sum) is an allowance for the supply only of a material
What is the Contractor deemed to have allowed for within a prime cost sum?
The construction cost of the associated works
How are prime costs adjusted?
They are finalised based on invoices of the supplied items, plus an amount for overheads and profit for the main contractor.
How would you advise preliminaries are cost on a CSA?
And what would you consider when assessing prelims?
I would suggest that these are projected using NRM1 or NRM2 depending on the procurement of the project.
Construction Metholodogy Logistics Type of project Duration Procurement route / Tender Strategy
What did you advise regarding the costing of the facade for Blackwall Reach?
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Why do costs vary per region?
- Local labour costs
- Vicinity of sites in relation to amenity
- Travel distances and existing land conditions
- Availability of local and specialised labour
- Ease of access to the site
- Transportation routes and costs.
What is the difference between IPMS 1 and GEA?
- Balconies are to be measured in IPMS but listed seperately. Excluded from GEA
- covered galleries are to be stated seperately in IPMS but as part of GEA in comp
What is the difference between IPMS 2 and GIA?
All areas within the IDF
Roof terraces and mezzanines to be measured seperately in IPMS
What is the difference between IPMS 3 A, B and C?
- IPMS 3a - internal areas including external walls and equates to GEA.
- IPMS 3b - internal areas including internal walls and equates to GIA
- IPMS 3c is the area of excluding internal wall areas.
- All of IPMS 3 excludes communal areas and voids.
Why did the NRM replace SMM7?
- There was no distinguish between cost estimates, plans and BofQ.
