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Quantification and Costing > Quantification And Costing > Flashcards

Quantification And Costing Flashcards

1
Q

Talk me through NRM and differences between 1,2 and 3.

A

NRM_1 Order of cost estimating and cost planning
NRM_2 Detailed measurement for building works
NRM_3_Building Maintenance Works

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2
Q

What is IPMS and its purpose?

A

International property measurement standards. Introduced to standardise property measurement across the world

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3
Q

Can you tell me what the difference between NRM 1 and 2 are and how this differs from the RICS Code of Measurement.

A

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.

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4
Q

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.

A

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.

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5
Q

How do you quantify internal partitions?

A

Section 2.7 of NRM1. details including thickness to be stated. Measured in m2 on the centre line. No deduction made for openings.

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6
Q

How do you measure steel. What is the current cost?

A

Measure beams, columns, upper floors, steel members. Understand kg/m or m2 to equate to an over tonnage for each member

£1,000/tonne

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7
Q

What are the ways of valuing change?

A
  • Similar nature – use pricing schedule
  • Contractors quotes
  • Dayworks
  • First principle
  • Schedule 2 quote
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8
Q

When did the IPMS residential come into effect and why?

A

May 2015.

Standardised approach
Consistent method of measurement
Guidance to measure

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9
Q

What is the difference between IPMS and code of measurement practice?

A

IPMS defines GEA, GIA and NIA as IPMS 1, IPMS 2, IPMS3.

It uses the internal dominant face

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10
Q

Do you know the valuation rules for changes in the JCT contract?

A
  • Similar nature – use pricing schedule
  • Fair and reasonable
  • Day works
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11
Q

What is a schedule 2 quotation?

A

The procedure in Schedule 2 aims to regulate the prices of quotations submitted by the contractor.

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12
Q

What is the rule for variations under the adjusted bill rates under JCT?

A

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.

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13
Q

What is the rule for variations under dayworks in JCT?

A

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)

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14
Q

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

A

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

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15
Q

What is a Prime Cost Sum?

A

The term ‘prime cost sum’ (PC sum) is an allowance for the supply only of a material

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16
Q

What is the Contractor deemed to have allowed for within a prime cost sum?

A

The construction cost of the associated works

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17
Q

How are prime costs adjusted?

A

They are finalised based on invoices of the supplied items, plus an amount for overheads and profit for the main contractor.

18
Q

How would you advise preliminaries are cost on a CSA?

And what would you consider when assessing prelims?

A

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
19
Q

What did you advise regarding the costing of the facade for Blackwall Reach?

A

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20
Q

Why do costs vary per region?

A
  • 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.
21
Q

What is the difference between IPMS 1 and GEA?

A
  • 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
22
Q

What is the difference between IPMS 2 and GIA?

A

All areas within the IDF

Roof terraces and mezzanines to be measured seperately in IPMS

23
Q

What is the difference between IPMS 3 A, B and C?

A
  • 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.
24
Q

Why did the NRM replace SMM7?

A
  • There was no distinguish between cost estimates, plans and BofQ.
25
Q

What does the NRM1 provide guidance for?

A
  • OCE
  • Cost Planning
  • Includes:
  • Facilitating works
  • Building works
  • Main contractor prelims
  • Main contractor OHP
  • Project/ design team fees
  • Other development costs
  • Risk (4 types)
  • Cost limit
  • Inflation
26
Q

What checks can you do to ensure BIM quants are correct?

A
  • Compare 2D GIA measures with ceiling and floor finishes
  • Check if elements stop at interfaces, eg. columns at slabs
  • Have objects replaced elements that impact on quantity checks. Eg. Complete lift core as an object.
27
Q

What does the NRM state needs to be included for a provisional sum to be defined?

A
  • The nature and construction of the work.
  • How & where?
  • Indicative quantities.
  • Any specific limitations and the like.
28
Q

What does fair and reasonable mean under the JCT?

A

This means that an agreement must be made with the contractor and EA. The cost must be built up how it is in the pricing document – for example multiple quotes from subcontractors or through first principles.

29
Q

On your projects what are the variation rules when pricing a variation?

A

The first instance is to use the same costs in the pricing document, if the cost of the change is of the same workmanship and quality.
If not, then a fair and reasonable rate would need to be agreed

30
Q

What are the problems with provisional sums to the PQS?

A
  • Contractor may get economies of scale/ cheaper prices PQS would not know about.
  • Not much incentive for contractor to bring cost down.
31
Q

What is the NRM3?

A

Order of cost estimating and cost planning for building maintenance works.
NRM3 provides a structured basis for measurement of building maintenance works, encompassing the annualised maintenance and life cycle major repairs and replacements of constructed assets and building components – which are carried out post-construction procurement and throughout the in-use phases of the constructed assets, or built environment.

32
Q

What are the different types of data collection for BIM models?

A
  • Measured building survey (MBS)
  • 3D reflectorless wireframe surveys
  • Laser scanning
  • New-build building information models
33
Q

What is BIM?

A

Software and process to facillitate design and construction

Measurement

34
Q

What are the BIM Levels?

A

L0 - CAD (non managed)
L1 - Managed CAD 2D/3D
L2 - 3D w/data, model for each discipline
L3 - Project model w/construction sequencing, life cycle info

35
Q

What is internal dominant face?

A

The inside finished surface comprising 50% or more of the surface area for each vertical section forming an internal perimeter.

36
Q

What is a schedule of works?

A

Schedules of work are ‘without quantities’ instructional lists often produced on smaller projects
Typically prepared by architect
Sanitary fittings, doors, windows, ironmongery, light fittings, louvres, roller shutters, diffusers, grilles, manholes

37
Q

What types of BOQ?

A

Approximate Quants

Fixed Quants

38
Q

What is a cost model?

A

It is a engine that is used to provide guidance on different cost or design alternatives typically at the early stages of design

39
Q

How would you deal with stats work in your pricing document?

A

Provisional Sum or Excluded

Contractor to include in prelims, management costs and programme

40
Q

What are difference types of specification?

A

Prescriptive - materials and workmanship

Performance - specific performance criteria

41
Q

If you didn’t have the benefit of the MEP team, how would you measure your MEP elements?

A

Carry out measurement in line with NRM1

Obtain rates from market / benchmarking

42
Q

How is BIM changing the way projects are measured?

A

Brings projects to life
More coordination
Clash detection
Government drive for min BIM L2

Quantification and Costing (1 decks)

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