FOUNDATIONS FOR DYNAMIC EQUIPMENT 351.3R-3 f i1, f i2 = dimensionless stiffness and damping functions for the i-th direction, piles f m = frequency of motion, Hz f n = system natural frequency (cycles per second) f o = operating speed, rpm G = dynamic shear modulus of the soil G ave = the average value of shear modulus of the soil over the pile length G c = the average
Get PriceIn this tutorial is explained how can be calculated a foundation for rotating equipment in accordance with ACI 351.3R standard based on Right thumb method, s
tools, equipment, materials and manpower to be set up for the equipment installation and grouting. The work area is isolated to protect surrounding areas and observe safety regulations. When these tasks are complete, advanced preparations will begin at
Examples of foundation design and dynamic analysis. Top left: compressor, skid and foundation design provides an integrated approach and reliable results. Top right: concrete foundation dynamics. Bottom pictures illustrate pile foundation design and dynamic analysis.. 2 Wood Advantages. Wood’s expertise in machinery design and dynamics, combined with in
Jul 16, 2010 We frequesntly design foundations for large rotating equipment. Generators, pumps, compressors etc. A recent example was a smaller 5MW combustion turbine generator set. We use the standard techniques found in text books such
In foundation thicker than 4 ft (1.2m), the minimum reinforcing steel is used (ACI207.2R), or a minimum reinforcing of 3.1 lb/ft 3 (50 kg/m 3 or 0.64%) for piers and 1.91 lb/ft 3 (30 kg/m 3 or 0.38%) foundation slabs. For compressor blocks, 1% reinforcing by volume. For dynamic foundation, epoxy grout should be used
Mar 29, 1999 The design life of most equipment requires periodic maintenance. Belts need adjustment, alignment needs to be maintained, proper lubrication on rotating equipment is required, and so on. In some cases, certain components need replacement, (e.g., a wheel bearing on a motor vehicle)
The design of block foundation for centrifugal or reciprocating machine starts with preliminary sizing of the block, which has been found to result in acceptable configuration as (Arya et
Machinery Foundation Grouting deflection occurring in 1 unit length of material (i.e., 1 microstrain equals 1 mil-lionth of an inch, per inch). Creep can ultimately cause enough deflection in a grouted baseplate to adversely affect machinery alignment resulting in pre-mature wear or failure of bearings and other rotating parts
design, assessment and repair to reduce vibration. Foundation design For compressors, a reinforced concrete foundation typically consists of grout, concrete, anchor bolts, jack bolts and soil (see Figure 1). The compressor frame is typically bolted to a baseplate or soleplate attached to the grout and concrete foundation. Jack bolts, chocks or
equipment for liquefied natural gas — Design of ... Foundations, retaining structures and geotechtonical aspects EN 10204, Metallic products — Types of inspection documents ... EN 60034-5, Rotating electrical machines — Part 5: Degrees of protection provided by
Rotating Equipment Pump Foundation Design Service. Our range of services include Pump Foundation Design and Compressor Foundation Design Service. Interested in this product? ... The design philosophy for most units is to minimize the unbalanced inertial forces and/or to provide a stiff skid and concrete foundation. This service is widely
Foundation Design Philosophy for Rotating Equipment. References has been taken from, 1. Design of structures and foundations for vibrating machines by S. Arya, M. O'Neill and G. Pincus 2. Foundation analysis and design by J. E. Bowels 3. Dynamics of bases and foundations by D. Barkan 4
Weight of the block foundation should be at least 4 times the weight of reciprocating machines and 3 times the weight of centrifugal machines. The width of foundation should be at least 1.5 times the vertical distance from the bottom of foundation to the center line of the shaft / rotor. The center of mass of machine foundation (machine+foundation system) should coincide with the
Foundation Design Philosophy for Rotating Equipment References has been taken from, 1. Design of structures and foundations for vibrating machines by S. Arya, M. O'Neill and G. Pincus 2. Foundation analysis and design by J. E. Bowels 3. Dynamics of bases and foundations by D. Barkan 4
foundation design: 1) The machine itself should run smoothly (round the clock); 2) The foundation supporting the equipment is capable of sustaining the various loads coming from the machine under operation (dynamic loads) as well as those that could develop during transient operations thermal bows, electrical faults, short circuits etc
Machinery with rotating, reciprocating, or impacting masses requires a foundation that can resist dynamic forces. Precise machine alignment should be maintained, and foun-dation vibrations should be controlled to ensure proper func - tioning of the machinery during its design service life. Successful design of such foundations for dynamic equip
For example, EPRI 1980 recommends the soil damping ratio for use in the design of power plant fan foundations should not exceed 20% for horizontal motion, Horizontal impedance: ku* = GR (Cu1 + iaoCu2) (4-16a) 50% for vertical motion, 10% for transverse rocking motion, and 15% for axial and torsional motions
Jul 16, 2010 A 10 megawatt generator for example. We frequesntly design foundations for large rotating equipment. Generators, pumps, compressors etc. A recent example was a smaller 5MW combustion turbine generator set. We use the standard techniques found in text books such as Vibrations of Soils and Foundation . We frequently estimate the dynamic unbalanced force for
Jun 16, 2014 Machine Foundation Analysis and Design Machine Foundation Analysis and Design. Rating: 81 ... 3.2 Rotating machine loads 3.3 Reciprocating machine loads ... Wondering about whether the checks for the foundation/equipment ratio changes for rotary (3 x machine weight) and reciprocating (5 x machine weight) - right now it seems locked to 5 x
Machine foundations are of prior importance in almost all type of industries, as these are subjected to dynamic loads generated by rotating equipment’s mounted on them
Design Services Foundation Design The function of a foundation is not only to support the weight of the machine/equipment, but also to keep the vibration levels and dynamic displacement of the isolation system within acceptable limits. Designing foundations supporting machines that can produce static and dynamic loads requires sound
Apr 29, 2011 •Mass of rotating parts of the machine, operating speed, height of the centre of the rotor from machine base frame, etc •Foot print of machine base frame, details of holding down bolts •Dynamic forces generated by the machine under operating conditions For strength design of foundation: • Static loads from machine •Equivalent static
Aug 19, 2015 foundations is to make the weight of the foundation block at least three times the weight of a rotating machine and at least five times the weight of a reciprocating machine. For pile-supported foundations, these ratios are sometimes reduced so that the foundation block weight, including pile cap, is at least 2-1/2 times the weight of a
foundation . It is assumed that in most cases the impact will be absorbed by the inertia of the structure when it reaches the foundation . It is unnecessary , for example , to take into consideration the impact effect of moving cars in the design of the foundation of massive bridge piers or abutments
13. Jacket Design 14. Piling and Foundation Design 15. Introduction to Corrosion Protection Glossary Bibliography Biographical Sketch Summary Structures deployed offshore for oils and gas field development are reviewed and their functional needs defined. Fundamental design requirements for fixed steel structures, in
Design of rotating equipment, general arrangement (GA) drawing and fabrication drawings for items such as agitators and mixers, mechanisms for clarifiers and thickeners, rotary drum and belt filters, Lime slaker classifiers etc ... Complete control system design philosophy and architecture including Control room layouts ... Foundation plan
design engineer did not understand the basic physics behind the process or machine that prompted the need for a new design. • Design engineers must be good at identifying problems. Once a problem is identified, it will usually yield to an
rotating equipment depends first and foremost on maintain-ing precision alignment. This requires a robust foundation ... overlooked during the design of foundations for rotating equip-ment in the chemical process industries (CPI). While most