The Colour of Quantities is

Green

Russ Hynes

Principal BIM Consultant

How Green Are Quantities?

• What do Quantities drive?

Green Material Quantities

• Coordination

– Optimised Routes

Green Material Quantities

• Coordination

– No Rework

Green Material Quantities

• Design For Manufacture & Assembly

– Offsite only possible with BIM

– Factory levels of waste control

Green Material Quantities

• Accuracy

– Procurement

– Tracking

– Waste Monitoring

Green Material Quantities

• Embodied Carbon

Quantity x Tonnes CO2

Green Material Quantities

• Embodied Carbon

2041 kg/year

204 kg/year

VS

Green Time Quantities

• “Time is at once the most valuable and the

most perishable of all our possessions.” –

John Randolph

• Time is Precious

• Waste it Wisely

Green Time Quantities

• Menial Tasks Waste Time

– Quantity Take-Off

– Location Calculations

– Repetitive Actions

Green Time Quantities

• “Free” Time Can Be Re-Tasked

– Design/Performance Optimisation

– Material Reduction/Exchange

Green Time Quantities

• Location Based Scheduling Method

• Lean Construction Techniques

Green Time Quantities

• Reduced Time To Construct

– Lower Environmental Impact Duration

Green Money

• Reduced Costs

– More Projects for the same value

Green Money

• Lifecycle Costing For 50,000 Hours Use

X 40 No. (1,200Hrs) @ £1.00 each

X 1 No. (50,000Hrs) @ £6.00 each

VS

Green Money

• Operating Costs Per Year

£210

VS

£21

Green Money

• Running & Purchasing Costs Over 25 Years

£5,490

£531

VS

Green Money

• Facilities Management Costs Over 25 Years?

Green Money

• Only AIMs Give Us This Information

How Green Are Quantities?

• BIM Quantities Are Part Of The Green Puzzle