Quantification and Costing (of construction works)

Question 1

What is the purpose of a BOQ?

Answer 1

It is a pricing document which provides a detailed breakdown of works by quantities to allow contractors to price by rates.

Question 2

What is the typical interim valuation process?

Answer 2

• Contractor submits their valuation at agreed time
• I visit site and review works done and make my assessment
• I certify the amount I believe due or make my recommendation to the Contract Administrator

Question 3

What are the different volumes of NRM?

Answer 3

NRM 1 - Order of Cost Estimating and Cost Planning for Capital Building Works
NRM 2 - Detailed Measurement for Building Works
NRM 3 - Order of Cost Estimating and Cost Planning for Building Maintenance Works

Question 4

What is the structure of NRM 1?

Answer 4

• Introduction
• Measurement rules for order of cost estimating
• Measurement rules for cost planning
• Tabulated rules of measurement for elemental cost planning
• Appendices

Question 5

How do you ensure the quantities you take off are accurate?

Answer 5

• Ensure I am measuring from scaled drawings and apply the correct scale.
• Use NRM rules on how to quantify.
• Measure GIFA and ask architect to confirm.
• Follow key to ensure I am measuring the correct items.
• Undertake CostX training to ensure - I am using software correctly.
• Spot check against items such as door widths and known quantities.
• Have quantities peer reviewed.

Question 6

Are there any alternatives to a Contract Sum Analysis?

Answer 6

• Bill of Quantities.
• Activitiy schedule - a list of activities contractor must undertake to complete works.
• Schedule of rates - pre agreed schedule that the contractor applies quants against as work is carried out.
• schedule of works

Question 7

Can you name some sources available for costing?

Answer 7

• BCIS
• Market Rates App
• SPONS pricing book
• Specialist sub-contractor engagement

Question 8

What factors must you consider of using SPONS?

Answer 8

Adjust for time and location.

Consider current market conditions.

Question 9

What is a Provisional Sum?

Answer 9

An allowance included within a contract for an element of work that is not yet defined enough for contractors to price.