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

Method of section, Method of section: Define the method of section? H...

Method of section: Define the method of section? How can you solve the problems with the help of method of section? Sol.: This method is powerful method for determining

Find the minimum power of the pump, Consider the power system as designed b...

Consider the power system as designed below. The duty fluid is water, and has a mass flow 0.75 kg/ s and all piping through which the liquid flows has diameter 1'', while the steam

Gradual engagement-various factors in clutch design , Gradual Engagement : ...

Gradual Engagement : The clutch should positively take the drive gradually without the occurrence of sudden jerks.

Gravitation, What is the clear difference between gravitational potential a...

What is the clear difference between gravitational potential and gravitational potential energy ? Ans) A body A of mass m is placed in the gravitational field of a body B of mass

Explain coating repairs, Q. Explain Coating Repairs? Any coatings found...

Q. Explain Coating Repairs? Any coatings found to be damaged or that do not pass the inspection stage shall be recoated or repaired at the expense of the Applicator. The entire

Convolution Integral, For a transfer function graph with h(t) on the y-axis...

For a transfer function graph with h(t) on the y-axis and time in seconds on the x-axis, the h(t)=1 from 0 to 2 seconds, while h(t)=0 everywhere else. How do I graph the unit step

Calculate the heat supplied from the outer surface, Consider laminar flow i...

Consider laminar flow in a circular tubewith a fully developed velocity profile.Let the heat be added at a constant rate along the tube from  x+ =0  to  x+ =0.10 . Thereafter ,let

Purpose of internal review, Q. Purpose of Internal review? The Project ...

Q. Purpose of Internal review? The Project Engineer in consultation with affected disciplines decides the timing of an internal review of IFR issue drawings. Each involved dis

Hazardous waste and material standards, Hazardous Waste and Material Standa...

Hazardous Waste and Material Standards Each hazardous site must be examined and evaluated for its characteristics before workers are allowed entry. This will pre decide an

Determine the point of intersection jets, A tank has two identical orifices...

A tank has two identical orifices in one of its vertical sides. The upper orifice is 3m below the water surface and lower one is 5m below the water surface. If the value of Cv for

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