ACI 351.3R-04 PDF
ACI R (FEA Method). Input Data. Machine Data. Foundation Type = Single Block. Machine Type = Rotating Machine. Resonance Limit. ACI codes for dynamic equipment foundation by radhitya_himawan. ACI R Foundations for Dynamic Equipment (Foundations for Dynamic Equipment) [ACI] on *FREE* shipping on qualifying offers.
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R Foundations for Dynamic Equipment (Reapproved )
These reports, readily retrievable from www. Rayleigh waves have components that are both perpendicular to the free surface and parallel 3511.3r-04 the free surface and are slightly slower than shear waves.
Alternatively, if the predominant soil is hard, longitudinal bracing may be required to sustain lateral forces. Remember me on this computer. A common practice among zci firms cai to compute the natural frequencies of the basic equipment- foundation and compare the values with the dynamic excitation frequency. If there is a potential for resonance, the engineer should either adjust to the foundation size or perform more refined calculations.
Anchorage-type meet the deflection limits specified by the machinery manu- machine-mounting systems integrate the foundation and the facturer or equipment owner. From that point, each loading condition, there can be one or more combinations the hammer foundation performance can be assessed as a of loads that apply to the structure or foundation.
Equation and show values.
R Foundations for Dynamic Equipment (Reapproved ), –
There are three different types of stress waves that can be transmitted through soil or any other elastic body. I’ve only done a few of these, but my experience I’ll low tune by a factor of two or high tune by a factor of two 1.
The machine can be and mode shapes eigenvectors are obtained. Nevertheless, the variation of dynamic For rocking, different equivalent radii are determined for stiffness with frequency can be represented by a each horizontal direction. Group interaction The pile stiffness matrix in global coordinates becomes usually increases the damping ratio, not necessarily the damping constant c.
Schenck provides useful information about secondary reciprocating forces. The Eng-Tips staff will check this out and take appropriate action.
Alter- bolt assemblies previously described, shear lugs, and shear natively, the face of the joint can be roughened sufficiently for transferring devices.
Periodic retightening to vibration and impact loads and better chemical resistance to to the original preload level may be required. The ISO lines are drawn at the upper level of Zone B, normally considered acceptable for long-term operation.
In specifying grout systems, the engi- High-range water-reducing admixtures may be an appro- neer should consider the different characteristics of each priate choice because they are consistent with their general type of grout along with field limitations and match these applicability to mass concrete applications and heavily with specific requirements of the job.
Computer programs, such as DYNA, are very useful in this regard. ACI does not make any representations with regard to health and safety issues and the 5. It may not be unacceptable surface cracking unless steps are taken to possible to completely solve the heat problem by reducing reduce the rate of release of this heat.
A detailed finite-element and tensile gas loads on each cylinder rod and, if these are analysis of metal compressor frame, chock mounts, concrete based on suction and discharge pressures, to recommend a block, and grout will account for the relative flexibility of the value of F1.
Shims should be fabricated with rounded corners. The forces due to frame deflections are trans- factor is conservatively low; however, higher values have mitted to the foundation through connections with the been seen with frames designed to be 351.3r-004 stiff.
The limited, as the stiffness parameters are actually static stiff- original source materials contain the mathematical relation- ness values. J- and Adi bolts can straighten out and pull out of concrete foundations before their maximumlbf tensile capacity is reached. Generally, The most effective methods of controlling the thermal higher clamping forces are preferred because high clamping effects are: Not sure why acii not displaying There are no conclusive limitations on the effects of vibration Where the system characteristics are such that the damping of surrounding buildings.
Refer to Section 3. In evaluating polymer grouts, the of thermal expansion of the 3351.3r-04. Yet, behind this straightforward definition lies the priate values for dynamic loads is best accomplished through need for careful attention to the interfaces between machine, careful communication and clear understanding between the mounting system, and concrete foundation.
351.3R-04: Foundations for Dynamic Equipment (Reapproved 2011)
The foundation supporting the current standards, then incorporating upgrades into the repair isolators is subject only to static loads, with the isolators design makes sense. See also Multi-degree-of-freedom average measurement of a particular quantity force, system.
Machine unbalance 351.3d-04 by Manufacturer 3. For these multi-DOF models representing structural the machine-foundation system. I’ll have results in a few weeks.