STI a programme with which you can calculate any product. Thereby the official contracting terms for the award of construction performance contracts are incorporated. For every product you would like to calculate, an own product group is applied and an own calculating bar will be built. Material consumption and working bonus are the basis of the calculation.

• staggered material prices
• automatic material price identification based on the measure indication
• variable quantity calculation
• automatic bonus identification
• Costs deposition for the contribution margin calculation
• any products
• alternative calculation
• Take over from the drawing datas as calculation basis