Abstract: A system and method for facilitating transactions involving the sale of goods or services. A standardized product rating system allows the subjective characteristics of a product to be evaluated and objectively rated based on generally accepted levels of quality. The products and factories of suppliers are also evaluated and rated in accordance with the standardized rating system. In one exemplary embodiment, a network of product buyers and suppliers are connected via a computer network. Through remote terminals, buyers submit requests-for-quotes, and suppliers submit bids, both of which specify objective and subjective aspects of a product using the standardized ratings. A network of independent, third-party service providers is also provided. The third-party service providers may place bids, via the computer network, to perform services necessary to execute purchase/sales transactions between the buyer and supplier.

Abstract: Method of producing a filter floor for treating water, comprising a structure made of girders or columns supporting a slab which has a number of orifices intended to take suction strainers, characterized in that the concrete of the said structure and of the slab is cast directly in the filter liner, the said structure and the lower part of the slab being shaped by one single design of lost formwork.

Abstract: Apparatus for setting in position and securing, on the floor of a filter, members providing for fluid to flow through the floor. The apparatus consists of a support arranged so as to receive the member, such as a nozzle or equivalent, introduced inside a housing created in shuttering used for making the filter floor. The housing and the support are configured to removably secure mechanically, for example by a snap-in action, the support in its housing.