Cut Time, Labour and Lumber Costs
With trusses there are less pieces to handle than with conventional framing... so you reduce costly on-site carpentry.
Trusses go up quickly... you save time. Buildings are closed in faster resulting in less down time due to bad weather. Time saved is literally money earned... the faster in and out of a job, the less money you spend on interest.
Trusses come to the job when you need them. Waste and workmen errors are eliminated. With no waste, clean up time is cut to a minimum. Trusses cut down on pilferage. It is easy to carry away a 16 foot length of 2 by 6... but who would carry off a 32-foot truss?
Clear span construction eliminates the need for interior bearing. No interior footings are necessary, and as interior walls are not load bearing, they can be lighter. The doubled top plate on interior walls can be reduced to a single. Clear span construction also gives you more design flexibility. The floor plan is not limited by where the bearing partitions must be located.