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

Methods of analysis of trusses, Methods of analysis of trusses: What ...

Methods of analysis of trusses: What are the methods of analysis of trusses? What is found when the analysis of a system is done? Sol.:  The forces in the members of

Evaluate the magnitude, Evaluate the magnitude, direction and position of t...

Evaluate the magnitude, direction and position of the resultant of the system of forces (using vector method) shown in figure below.

Determine for water flow rate, A counter flow heat exchanger is used to coo...

A counter flow heat exchanger is used to cool 2000kg/hr of oil(Cp= 2.5 KJ/Kg K) from 105 o C to 30 o C by the use of water entering at 15 o C. If the overall heat transfer coeff

What are the functions of brake? , (a) What are the functions of brake? Wh...

(a) What are the functions of brake? What are the types of brakes? (b) How do brakes stop a moving vehicle? (c) What is the difference between brake and clutch? (d) Descri

Pyrolysis-manufacturing methods of ceramics, Pyrolysis Pyrolysis is th...

Pyrolysis Pyrolysis is the procedure of depositing a ceramic on a heated substrate. The process is used to deposit coating or generate thin walled components of graphite or si

Chemistry, what is law of chemical combinations?

what is law of chemical combinations?

Shut-off valves on major zone, Q. Shut-off valves on major zone? Are shu...

Q. Shut-off valves on major zone? Are shut-off valves on major zone branches and on the bottom and top of riser? Are balancing valves on return branches? Are control valves on

Manufacturing prossess, describe advantages of limitation and effect of col...

describe advantages of limitation and effect of cold working?

Determine the maximum profit value, A company makes two types of sofas, reg...

A company makes two types of sofas, regular and long, at two locations, one in Nottingham and one in London. The plant in Nottingham has a daily operating budget of £45,000 and can

Forces working on sphere, Forces working on sphere: Let a sphere of ma...

Forces working on sphere: Let a sphere of mass m, suspended by means of a string, resting against a smooth wall, as illustrated in Figure (a). What are the forces working on i

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