Vibrotrevi is a special driven cased pile where a temporary steel casing is driven into the soil and retrieved by means of powerful hydraulic vibrator alter the concrete pouring. The system allows the total reutilization of the casing, giving, costwise, great advantages with its application. Vibrotrevi has been experimented in many sites, with diameters ranging from 400 to 600 mm and depth up to 25 m.

Precast Pile Precast square elements are driven by means of diesel or hydraulic hammers and joint together with special keys designed by Trevi technical department. The elements are prepared in Trevi's precast yards which are able to produce up to 300 linear meter per day with dimensions of 27.5 x 27.5 cm. and 36x36 cm. Precast piles are especially utilised for their low cost advantages, for sites in remote areas and for foundations with contained vertical loads applied.