| 摘要 |
<p>The invention describes a reinforced sectional and modular gutter (C), with improved male (5) and female (6) joints at its extremities and with improved male joints (5) in the intermediate zones (G) for the formation of submultiples of gutter always with male and female joints at the extremities. It is also described the formation externally provided with ribs of a modular gutter, which improves its rigidity, its resistance to mechanical stresses and which improves the anchoring of the poured cement or concrete inside which it will be embedded. Each modular gutter is provided at one end with joints (15, 115) for pipes for the inlet o discharge of water, which are in origin closed but can be opened easily. It is also described an improved head element (S) for the shutter closure of the extremities of the gutter or for the closure of the not utilised parts of a cross joint (X) which can be associated with sectional and modular gutters in order to increase their flexibility of employment in the formation of linear drainage channels or with interconnection of the L-, T- or cross- type.</p> |
