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

Vendor drawing and data review, The Mechanical Engineer/Specialist shall be...

The Mechanical Engineer/Specialist shall be responsible for specifying Vendor Drawings and Data Requirements in the MRQ and MRP using the WorleyParsons standard vendor drawing and

Hardness of water, hardness of bore well water is less than sea water .ju...

hardness of bore well water is less than sea water .justify

Determine the centroid of the truss gusset plate, Determine the centroid of...

Determine the centroid of the truss Gusset Plate shown in figure below.

Determine the resultant, ABCDEF is a regular hexagon having forces of magni...

ABCDEF is a regular hexagon having forces of magnitude 3, 6√3, 12, 3√3 and 6N which act at ‘A' in the direction of AB, AC, AD, AE and AF respectively. Determine the resultant compl

What are the advantages of compound compression, What are the advantages of...

What are the advantages of compound compression with intercooler over single stage compression? Explain with the help of schematic and P-h diagrams, the working of a two stage c

Analyse the beam, Analyse the beam: Analyse the beam illustrated in Fi...

Analyse the beam: Analyse the beam illustrated in Figure and draw the SFD, BND & thrust diagram. Situated the point of contraflexure, if any. Figure Solution

Classification of power sources according to construction, CLASSIFICATION O...

CLASSIFICATION OF POWER SOURCES ACCORDING TO CONSTRUCTION & DESIGN To give the desired output a power source may be constructed with different components. Therefore, a classifi

Formation - permanent way, Formation (Embankment): The formation is t...

Formation (Embankment): The formation is the earthen embankment on which the other components of the track rest. For supporting the heavy loads, the earth should be of good q

V pulley design, What will be the criteria to be looked into get the pulley...

What will be the criteria to be looked into get the pulley rpm increase

Numerical problems based on the cantilever beam, Numerical Problems Based o...

Numerical Problems Based on the Cantilever Beam: Draw the SF and BM diagram for the beam as shown in the figure given below. Also indicate principal values on diagrams.

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