Rotary spreader for elongated screed

摘要: A screed with a trussed beam having cross-section in the geometrical shape of an equilateral triangle used to support tools for working plastic concrete. The is supported between spaced apart, wheeled carriages riding forms bounding oriented such that cross-sectional inverted wide base at top and apex bottom. triangular truss has sufficient space suspend substantially within peripheral edges beam. uses upstanding integral outriggers so pitch center can be adjusted exteriorly pour site. rotary spreader displaces concrete forwardly without deleteriously compressing it as moves forwardly.