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

Compression ratio and mean effective pressure, Compressio n Ratio: It...

Compressio n Ratio: It is calculated as shown below Mea n Effective Pressure (P m   o r P me f ): Mean effective pressure is the hypothetical consta

Two wheeler industry growth, TWO WHEELER INDUSTRY GROWTH:  In world repres...

TWO WHEELER INDUSTRY GROWTH:  In world represents one of the largest two wheeler markets in the world with an estimated size of 5.4 million units a year. Two wheelers are used ext

Steam generator, what are the essentials of a good steam generator?

what are the essentials of a good steam generator?

Determine the forces in members in roof truss, Determine the Forces in Memb...

Determine the Forces in Members in Roof Truss Determine the forces in members EF, EL, FL, and LK in the roof truss shown below and state whether the members are in tension or

Determine the residual plastic strain in the members, As part of the fitti...

As part of the fitting of the mooring lines to a wave energy device, the pin-jointed structure shown in Figure Q is to be subjected to a small degree of plastic deformation by appl

Control surface and flow work - thermodynamics, Control Surface and Flow Wo...

Control Surface and Flow Work - thermodynamics: Cont r o l Surface: A control system has control volume that is separated from its surrounding by real or imaginary contro

What are square footings, What are square footings? SQUARE FOOTINGS ...

What are square footings? SQUARE FOOTINGS This type of footing, also termed an isolated spread footing is probably the most common, simplest and most economical of the vario

Describe pendulum pump mechanism, Describe in detail the following mechanis...

Describe in detail the following mechanisms : (a) Pendulum Pump (b) Crank and slotted lever mechanism Explain in detail the following mechanisms : (a) Elliptical Tramme

Equations by gauss-jordan method, a) Answer the following equations by Gaus...

a) Answer the following equations by Gauss-Jordan method x 1 +2x 2 +x 3 =8 ; 2x 1 +3x 2 +4x 3 =20; 4x 1 +3x 2 +2x 3 = 16 b) Answer the following equations by Relaxation m

Airport layout - planning a new airport, Airport Layout: The main com...

Airport Layout: The main components of an airport are: (a)        Runways (b)       Taxiways (c)        Apron (d)       Terminal area (i)        Terminal build

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