Derrick dynamic loading

All conditions listed in the section titled Load Capacities, subsection titled Mast and Derricks under Dynamic Conditions," are to be specified by the user. Forces resulting from wind and vessel motion are to be calculated in accordance with the formulas presented in the section titled Design Specifications, paragraphs titled Wind, Dynamic Loading (Induced by Floating Hull Motion). ... [Pg.510]

In addition to withstanding some minimum load or loads (sections titled Load Capacities and Design Specifications ), derricks and masts that satisfy API standards must also satisfy certain requirements regarding materials, allowable stresses, wind, dynamic loading, earthquakes and extremes of temperature. [Pg.511]

The derrick efficiency factor can be found for static (dead load) conditions and dynamic conditions. In this section, only the static conditions will be considered. [Pg.522]

The total load on the derrick under dynamic conditions, F (lb), will be... [Pg.524]

For dynamic conditions, find the total load on a derrick that is capable of lifting a 600,000-lb drill string with an 8-working line block and tackle. The crown... [Pg.524]

Big Chemical Encyclopedia