By ACI Committee 346
This specification covers building of earth-supported cast-in-place concrete pipe (CIPCP). This specification covers building of CIPCP with a diameter as much as one hundred twenty in. The Architect/Engineer could make this specification appropriate to any undertaking via bringing up it within the undertaking Specification. supplementations should be made by means of designating or specifying person venture necessities as wanted. This rfile needs to be utilized in conjunction with ACI 301. Inclusion of this record in a venture Specification, with vital record goods, will offer precious default values for needed record goods in ACI 301.
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Additional resources for ACI 346-09: Specification for Cast-in-Place Concrete Pipe
The figures suggest some dependence on the weather strategy taken by the captain. If avoidance is aggressive then the voyage is slowed considerably. During the winter and fall when waves are largest, the delay averages about 1 day but drops to less then ½ day by summer (as compared to the no-weather avoidance case). 7 m. The delays suggest that meeting this threshold is a challenge especially during the winter. Figure 2 also shows the standard deviation (ı) by season (vertical bars). This is an important measure of the uncertainty of arrival time.
Under this premise also the cross-sectional area of the crane pedestal shall be minimized. Moreover, the maximum breadth of the lower pedestal is influenced by the operational range of the hatch covers. These necessities automatically demand the use of thick plate material. g. plate folding of transition body and crane house). Consequently, it has to be put up with high stress levels in local areas. Additionally, the radial stiffness of slewing rings is decreasing with increasing ring diameter.
Aalbers and Leenaars  found that the actual waves experienced during repeated transports was typically 30% less than calculated from traditional methods that don’t consider weather routing. Figure 1 shows a flow chart of SafeTrans MCS as applied to a single voyage for a heavy-lift transport. g. 6-degree of freedom acceleration at selected points on the cargo), etc.. At this point the program starts the first of many MCS voyages (see Block 1 in Figure 1). In Block 2, a Captain’s decision algorithm consults the forecast weather database and if it shows winds/waves that are above the user-specified thresholds then the voyage is delayed (not started).
ACI 346-09: Specification for Cast-in-Place Concrete Pipe by ACI Committee 346