Abstract: The outer sides of the widened top embankment part of the gutter are provided with small integral continuous longitudinal channels that face upwards and into which the terminal edge of the waterproof facing of the concrete structure fitted with a drainage channel formed by the gutters in question can be correctly abutted so as to form a leaktight joint between the facing and the gutters laid one after the other and such that the water discharged by the facing into the supplementary channels can also be carried away. The ends and middle part of the gutter are also suitably shaped so that the gutter can be joined to other similar gutters, whether these be whole modules or modules cut into sections of the desired length.

Abstract: This invention relates to a modular construction joint made up of a high-strength, composite plastic material, possibly embedding a glass fiber or similar filling material, said joist being suitable for realizing grid-like and closure members which can stand the traffic of pedestrians and vehicles.

Abstract: This invention relates to a modular frame which is made up of a suitable plastic material and is capable of giving the correct L-shaped profile to the upper edges of wells or of canalizations or of openings in general and is prepared so as to give the possibility of anchoring the same strongly to the cement mortar employed for its installation.