Seismic loads for structure-mounted equipment, Mechanical Engineering

Assignment Help:

Q. Seismic Loads For Structure-Mounted Equipment?

For equipment mounted in a structure above grade, the governing equation for seismic force is:

Fp = AvCcPacWc, where Av = (a site-specific value, equipment seismic coefficient Cc=5), and performance criteria factor P=1.0.ac=1.0, except for flexible equipment such as tall slender vessels, vessels on tall legs springs, or other resilient supports.  This factor is then given as follows: for Tc/T<0.6 or Tc/T>1.4, ac=1.0; for Tc/T³0.6 or Tc/T£1.4, ac=5.0. 

Tc is the first natural period of the equipment, and T is the first natural period of the structure.  Wc is the operating weight of the equipment.  Fp is the horizontal seismic force, applied at the center of gravity of the equipment and in the direction causing the highest stresses. The design of pressure retaining elements (both internal and external) shall permit allowable stress multiplying factors.


Related Discussions:- Seismic loads for structure-mounted equipment

Show mass energy relation, Q. Show Mass energy Relation? Until the time...

Q. Show Mass energy Relation? Until the time of Einstein, mass and energy were considered as two different physical quantities. But in 1905, with the help of postulates of the

Scope of materials for sulfuric acid service, Q. Scope of Materials for sul...

Q. Scope of Materials for sulfuric acid service? This Engineering Practice presents materials of construction commonly used in Sulfuric Acid service. The corrosiveness of sulfu

Explain about the CAD system, Explain about the CAD system. CAD systems...

Explain about the CAD system. CAD systems generally require considerable processor power and a number of output and input devices; for instance: - Light pens - Large scre

Compound shaft, Compoun d shaft: compoun d shaft? How is compound ...

Compoun d shaft: compoun d shaft? How is compound shaft classified?                                                               Sol.: Shaft made up of 2 or more mat

Determine the dimensions of the tank, Determine the dimensions of the tank:...

Determine the dimensions of the tank: A conical water tank is to be fabricated from steel plate of 10 mm thickness. The shell should contain an apex angle (α) 15o. If the perm

Corrosion control in oil-treating equipment, Q. Corrosion Control in Oil-Tr...

Q. Corrosion Control in Oil-Treating Equipment? Bitumen provides adequate internal protection for Inlet Slug Catcher, FWKO and Treater. Due to high operating temperature, inter

Industrial applications of ultrasonics, Industrial applications of ultraso...

Industrial applications of ultrasonics-cleaning, welding, soldering, drilling

Laminar flow, Consider fully developed laminar flow with constant propertie...

Consider fully developed laminar flow with constant properties in a circular tube. Let there be heat transfered  to or from  the fluid at a constant rate per unit of tube length.Ad

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd