By Dr.?Ing. Rainer Mallee, Dr.?Ing. Werner Fuchs, Prof. Dr.?Ing. Rolf Eligehausen(auth.), Konrad Bergmeister, Frank Fingerloos, Johann?Dietrich Worner(eds.)
The ecu commonplace draft CEN/TS 1992-4 for the layout of fastenings through headed studs, anchor channels, mechanical and chemical anchors is prepared to be used. This e-book elivers a close description of the choice of hysteria and shear load activities. in addition plastic load means layout and a plastic layout procedure are given. longevity, fireplace resistance and earthquake motion are uncovered to a specific treatment.
chosen chapters of the German concrete yearbook "Beton-Kalender" are actually to be had in English. the recent English BetonKalender sequence grants the world over invaluable engineering services and business information from Germany.
The Beton-Kalender used to be based in 1906 in Berlin, and intensely quickly after it has develop into a "bible" for development engineers. Its founder Fritz von Emperger (1862-1942) proposal that it's going to aid the once a year growth of the recent construction process with ferro-concrete constructions "until its tempestuous improvement will be delivered to the end". yet, with exception 1945-50 it's released every year till this present day.
Read or Download Design of Fastenings for Use in Concrete - the CEN/TS 1992-4 Provisions PDF
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Additional info for Design of Fastenings for Use in Concrete - the CEN/TS 1992-4 Provisions
Sample text
1992)). It is valid also for groups with variable spacing. 7 shows examples. 7b, however, the spacing s1,2 is bigger, that is, the base plate is fixed by two separate fastener groups. 5·s cr,N) (b) s 1,1, s2,1, s2,2 scr,N; s1,2 > scr,N Fig. 5 · hef Ac,N 3 · hef (a) (b) Fig. 8) can be also described with the help of the CC-method. 8a) and the load-carrying capacity corresponds to the value of a one single fastener. 8b), then failure cone and edge overlap and the characteristic resistance decreases.
2a2. The influence of spacing on the characteristic concrete break-out resistance of a fastener group is taken into account by the factor Ac,N/A0c;N . Then the break-out resistance increases in proportion to the base area of the fastener group. 5 shows examples for the determination of the base areas of the idealized break-out bodies for different fastener groups. In CEN/TS the base areas of one pyramid or the base areas of overlapping pyramids are called projected area. 6a). The embedment depth of the post-installed fasteners is hef ¼ 80 mm.
2 for all loads should be assumed. If the exact position of the load on the channel is not known, the most unfavourable loading position should be assumed for each failure mode. This is for the case of failure of an anchor by steel rupture or pull-out the load acting over an anchor and in case of bending failure of the channel the load acting between anchors. In case of the failure mode local flexure of the channel lip the verification shall be performed exactly at the point of introduction of the external load.