... HANDLING PLACING METHODS MANUFACTURE TESTS PIPES LONGITUDINAL FORCES PRESTRESSING BENDING STRESSING SUPPORTS CONSTRUCTION TENSIONING GROUTING BENMORE NEW ZEALAND For written discussion+ Paper No. 6915 PRESTRESSEDCONCRETEPENSTOCKSAT BENMORE by Robert Francis Deans Ritchie...

... vertical stress. 29. The second and third models were also of glyptal resin and represented at 1/72 scalea typical cross-sectionof the junction of the base and stem of the TABLESTRESS CONCENTRATION FACTORS FOR END WALLS Location ~~ Applied loading Concentration factor Sitdouefnnel Vertical tension opening...

... DETEBMINATOIFOMNAGNITUDE OF PRESTRESS 13. The basic criterion adoptedfor the design was that there shouldbe no tension on the upstream face and that tension on the downstream face should not exceed 50 lb/sq. in. Profiles were developed forvariousheights of the dam, each with various magnitudesof prestress...

...S S MORRIS; W S GARRETT; L BUCHLER; G WHYSALL; R G ROBERTSON; A H CLARK; J A BANKS SOUTH AFRICA © Thomas Telford and ICE 1956 RAISING STRENGTHENING CONSTRUCTION DESIGN DAMS GROUTING CABLES PROTECTION CORROSION TENSIONING ANCHORAGES TESTS SAFETY STEENBRAS DAM ALLT...

... that the conductor had to be loaded up to a tension which wouldnot be exceededduring its life and was, in fact, something like the maximum working tension. The bedding down of the strands was dealt with in the normal operation of running out and tensioning. To deal effectively and quickly with the second point...

... are 4 inches. Four cables of twelve O.2-inchwires with a resultant eccentricity of 5&inches and tensioned to 50,000 Ib. each, give stresses under prestress alone of 1,980 Ib. per square inch and 260 lb. per square inch in the top andbottom flanges, respectively. Table 3 gives the stresses intopandbottom...