Titlebook: Roofs; R. E. Owen Textbook 1972Latest edition Macmillan Publishers Limited 1972 building.civil engineering.construction.roof

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Durabilitynd and reduction of thermal loss, a roof may be simply constructed of stretched woven proofed fabric, as in holiday and circus tents. These “buildings”, of relatively low capital cost, are suitable for intermittent use over fairly long periods, but are of limited durability in permanent exposure to

枫树

Sound insulationng spans. This requirement is in conflict with the need for heavy mass for the reduction of sound transmission. In many long-span factories, stadia and hangars, . noise levels are so high that reduction of . noise is unnecessary. On the other hand adequate sound reduction through the roofs of audito

lipoatrophy

伪善

Flat roofsts, or an . or precast reinforced concrete slab. The surface of these roofs must receive a waterproof covering, and where their inherent thermal insulation is inadequate, an insulating slab or board must be incorporated in the roof system. . are produced by manufacturers of foamed concrete products

胰脏

Three-dimensional structures One-way spanning members require that the loads are carried at their ends or intermediately by beams, walls or regular columns. If they receive concentrated loads, special design provision is required, the load then being distributed along the length of the member. For long spans, the individual st

背信

Shells and folded platesto the ground. In the network or skeletal structure there is a sequence of load collection, from short-span deck to secondary members, thence to primary members, then to supports and finally to the ground. This sequence is seen in a typical truss and purlin roof. Load collection may also be through

Silent-Ischemia

Air-supported roofs, which distribute the stresses within the subsoil. In the air-supported (inflated) structure, on the other hand, the foundations are subject to tensile forces tending to withdraw them from the ground. This is because an air pressure greater than ambient atmospheric pressure is maintained within the

裙带关系

Range-Of-Motion

ARENA

mneseform für die allgemeinärztliche Praxis. Die eigenständige Fälleverteilung dieser primärärztlich spezialisierten Institution ermöglicht dem Allgemeinarzt, der selber häufig Notfälle am Telefon beurteilen muß, seine Entscheidungen zu analysieren. Außerdem wird durch die besonderen Umstände des No