Abstract: Air condition control for buildings, having a roof structure of roof trusses relatively widely spaced, between which self-supporting roof plates are laid and covered by a covering layer so that a gap is formed between the covering layer and the roof plates. Air is passed in one or the other direction through a ventilation opening in the roof, through the air gap (13) and through ducts (9) in the roof plates. Air sucked in from the atmosphere through the ventilation opening passes through the ducts to an air conditioning unit (5) and to a distribution device (6) to maintain a suitable temperature in the building. Air flow can also be inverted by being supplied in the form of outdoor air to the air conditioning unit (5) and after its passage through the building being conducted away into the atmosphere through the roof structure by the ventilation opening.

Abstract: The present invention is directed to a device for introducing transversal reinforcement members in concrete bodies. In the casting of a concrete body, the casting machine and the concrete body move relative to each other during the casting operation. The present invention includes a storage member for reinforcement members with a device which feeds one reinforcement member at a time from the storage member to the surface of the concrete body. Pusher members are provided for positively introducing the reinforcement members into the concrete. The pusher members are connected to a knife which seals the opening through which the reinforcements members are introduced against upflow of concrete. Further, the present invention includes fin members to maintain the positioning of the reinforcement members in the concrete body.