SUG I tanks design spectral response accelerations#0183;Web viewE.4.2 Site-specific Spectral Response Accelerations.The design method for a site-specific spectral response is based on the provisions of ASCE 7.Design using site-specific ground motions should be considered where any of the following apply For tanks in SUG III and located where SDS = 0.5g or greater,butt welded annular plates shall be Title Seismic Assessment of Steel Chemical StorageLocation and site condition of target tank Parameters of design spectral response acceleration Calculate for impulsive and convective (sloshing) modes 1.Natural periods T i and T c 2.Design spectral response acceleration coefficients A i and A c 3.Effective liquid weights W i and W c 4.Heights of center of action of various lateral The science of Spectral Is that really how BoseEinstein An actual BoseEinstein condensate scientist reviews Spectral's science.Plus a response from the film's director,Nic Mathieu. accelerations,and even gravitation. and new approaches to

Ground-supported cylindrical tanks are strategically very important structures used to store a variety of liquids.This paper presents the theoretical background of fluid effect on tank when a fluid container is subjected to horizontal acceleration.Fluid excites the hydrodynamic (impulsive and convective) pressures,impulsive and convective (sloshing) actions.Seismic response of cylindrical Structural Analysis Report of Anchorage Design forDesign Spectral Response Accelerations SDs and SD1 SDs = 2/3 x SMs and SD1 = 2/3 x SM1 Site Class D - Fa = 1.0 ,Fv = 1.5 Period Sa (sec) (g) 0.2 1.518 (SDs,Site Class D) 1.0 1.285 (SD1,Site Class D) Load Calculation for RISA Analysis Dead Loads Propane Tank = 40 lbs / each (6) Propane Tank per Shelf = 240 lbs Area = 9.1675 ft2 = 26 psf / shelfStorage Tank - DocShare.tipsNote The total weight of the tank roof will be added to the weight of tank content,since the roof is floating on the liquid.DESIGN SPECTRAL RESPONSE ACCELERATIONS Impulsive spectral acceleration parameter,Ai Ai = 2.5 Q Fa So I Rwi = 0.34 Convective spectral acceleration parameter,Ac When Tc TL Ac = 2.5 K Q Fa So Ts Tc I Rwc Ai = -

analysis and design of a liquid-containing structure.This meant that these procedures should cover both aspects of seismic design the loading side (namely the determination of the seismic loads based on the mapped maximum considered earthquake spectral response accelerations at short periods (S s) and 1 second (S 1) obtained from the Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextImperfection-sensitivity of unanchored aboveground open The spectral response accelerations are also modified to account for ductility,damping,and over-strength of the tank system.API 650 provides two factors,called the response modification factor,R,for the two modes,impulsive and convective,for reducing the corresponding effective forces applied to the tank.Some results are removed in response to a notice of local law requirement.For more information,please see here.

period geomean spectral response acceleration and about 230% (1.8 SUG I tanks design spectral response accelerations#215; 130%) of 5%-damped,1-second geomean spectral response acceleration of the new next-generation attenuation relations (average value of the three relations).Observations The following observations can be made by comparing the design ground motions of ASCE 7-10 with those of ASCESeismic load calculations per the NYS 2002 codeDS = Short period design spectral response acceleration (see Table S-1 on page 3) S D1 = One-second design spectral response acceleration (see Table S-1 on page 3) S 1 = Mapped one-second spectral acceleration R = Structural System Response Modification Factor from Table 1617.6 The FIVE basic structural systems in Table 1617.6 are:Seismic design of circular liquid-containing N.A.Legates8,a single Equation is adopted for all tanks (Eq's (12) or (13)).Once the structural and fluid models are thus established,the ground motion is represented by a design response spectrum which is either derived from the actual earthquake record for the site,or is constructed by analogy to sites with known soil and seismic characteristics

8,a single Equation is adopted for all tanks (Eq's (12) or (13)).Once the structural and fluid models are thus established,the ground motion is represented by a design response spectrum which is either derived from the actual earthquake record for the site,or is constructed by analogy to sites with known soil and seismic characteristics Seismic Loads Based on IBC 2012/ASCE 7-10162 Determine the 5% damped design spectral response accelerations SDS at short period and SD1 at long period in accordance with IBC 1613.3.4.SDS =(2/3) SMS SD1 =(2/3) SM1 where SMS = The maximum considered earthquake spectral response accelerations for short period as determined in section 1613.3.3.Seismic Ground Motion Values - -CUSTOMER VALUE-Seismic Ground Motion Values.11.4 SEISMIC GROUND MOTION VALUES.11.4.1 Mapped Acceleration Parameters.The parameters S S and S 1 shall be determined from the 0.2 and 1.0 s spectral response accelerations shown on Figs.22-1 through 22-14,respectively.Where S 1,is less than or equal to 0.04 and S S is less than or equal to 0.15,the structure is permitted to be assigned to Seismic Design

Determine spectral response accelerations At short period,S S At 1 second period,S 1 Calculate the design spectral response S DS = 2/3 S MS S D1 = 2/3 S M1 assembly buildings SUG III,essential facilities SUG III,essential facilities Determine Seismic A,B,C,or D* as A,B,C,or D* as a Design Category a function of SUG and S DS SITE CRITERIA AND LOADS ON STRUCTURESITE CRITERIA AND LOADS ON STRUCTURE CODE ASCE 7-98 / IBC 2000 Note,references to ASCE 7-98 are bold,references to IBC 2000 are in italics.SITE CRITERIA Roof Live Load 10 psf IBC 1607.11.2.1 Roof Dead Load 5 psf (assumed) Ground Snow 30 psf Site specific information,Figure 7-1 Basic Wind Speed 90 mph,Exposure C Site specific information,Figure 6-1 Seismic Site Class DReview of Code Provisions on Design Seismic Forces for buildings.It is seen that,depending on the type of tank,design seismic force for tanks can be 3 to 7 times higher than that for buildings.Based on the comparison of provisions design response spectra.This assessment is done with respect to corresponding SD1 are the design spectral response accelerations at short periods and 1 second .

buildings.It is seen that,depending on the type of tank,design seismic force for tanks can be 3 to 7 times higher than that for buildings.Based on the comparison of provisions design response spectra.This assessment is done with respect to corresponding SD1 are the design spectral response accelerations at short periods and 1 second .Review of API 650 Annex E Design of large steel welded Mar 01,2017 SUG I tanks design spectral response accelerations#0183;The soil classification is a critical part of the seismic design of steel tanks.API 650 uses the soil type to apply an acceleration site coefficient,F a,and velocity site coefficient,F v,to the MCE spectral response parameters,S s and S 1,respectively,in order to obtain the design spectral response parameters,S DS and S D1,of the Representation of Bidirectional Ground Motions forratio.The maximum-direction (MD) ground motion is the peak response of the oscillator regardless of azimuth,which in Figure 1 occurs in direction Y.This MD ground motion departs from past practice in engineering,which has specied design spectra based on the geometric mean of response spectral accelerations for the two horizontal

Spectral response acceleration parameters are modified and converted to impulsive and compulsive acceleration coefficients.These coefficients can be used to determine equivalent lateral seismic design forces which can be applied to the tank as shears to simulate earthquake effects.June 9,2016 Confidential and proprietary.Nonlinear numerical evaluation of large open-top Oct 01,2017 SUG I tanks design spectral response accelerations#0183;Many researchers investigated the effects of tank flexibility in order to understand the true behavior of tanks subjected to horizontal ground accelerations and to develop models to ensure a safe design of the structure ,,,,,,,,,,,,,,.Veletsos showed that the response of rigid tanks attain a maximum response acceleration that is approximately equal to the maximum ground Mapped Spectral Response Acceleration Ss And S1 Values May 31,2018 SUG I tanks design spectral response accelerations#0183;These values are probabilistic 2%-in-50-year spectral response accelerations.Corresponding deterministic values that the International Building Code would use to cap these probabilistic values (where they are greater than 1.5g and 0.6g,respectively),have not yet been computed for this region.

May 31,2018 SUG I tanks design spectral response accelerations#0183;These values are probabilistic 2%-in-50-year spectral response accelerations.Corresponding deterministic values that the International Building Code would use to cap these probabilistic values (where they are greater than 1.5g and 0.6g,respectively),have not yet been computed for this region.Mapped Acceleration Parameters UpCodesThe parameters S s and S 1 shall be determined from the 0.2 and 1-second spectral response accelerations shown on Figures 1613.3.1(1) through 1613.3.1(6).Where S 1 is less than or equal to 0.04 and S s is less than or equal to 0.15,the structure is permitted to be assigned to Seismic Design Category A.The parameters S S and S 1 shall be,respectively,1.5 and 0.6 for Guam and 1.0 and 0.4 Imperfection-sensitivity of unanchored aboveground open The spectral response accelerations are also modified to account for ductility,damping,and over-strength of the tank system.API 650 provides two factors,called the response modification factor,R,for the two modes,impulsive and convective,for reducing the corresponding effective forces applied to the tank.

The current specialty design code for water tanks,ACI 350.3-06 (Seismic Design of Liquid-Containing Concrete Structure),specifies design seismic loads based on the so-defined maximum considered earthquake in which the spectral response acceleration shall be taken to be the lesser of the probabilistic maximum considered earthquake Doug Noffsinger/CH2M - norfolk.govfor tanks so specified.B.The Users Basic Requirements Specification (UBRS) for RTP-1 tanks is a part of this Specification.C.Design tank,including resin selection (unless specified),wall thickness,methods and locations of support,and stiffener requirements.Design shall beDesign,Construction and Operation of the Floating RoofFigure 2.11 Seismic Diagram for a Floating Roof Tank 60 Figure 2.12 Design Response Spectral for Ground-Supported Liquid Storage Tanks 65 Figure 2.13 Sloshing Period Coefficient,Ks 66 Figure 2.14 Response Spectrum Curve 69 Figure 2.15 Effective weight of Liquid ratio 70

Partial regionalization maps of the MCE ground motion contours for 0.2-sec and 1.0-sec spectral response accelerations,Ss and S1,are given in terms of percentage of g in Figs.2.45a and 2.45b.The maps are for site class B.A site-specific response spectrum is not required for the building.Required.Cited by 8Publish Year 2017Author J.M.Spritzer,S.GuzeyProposed Appendix E re-write 04-20044 tanks in SUG III shall comply with the freeboard requirements of this Appendix. 22 Q Scaling factor from the MCE to the design level spectral accelerations; design spectral response acceleration parameter at any period based on 31 mapped,probabilistic procedures,Assessment of current design procedures for conical tanks Establish the design spectral response accelerations corre-sponding to periods of 0.2 s and 1.0 s,damped 5%,for the site.under consideration.5. vative tank design values,but do not

Sep 17,2018 SUG I tanks design spectral response accelerations#0183;The design response spectral accelerations SDS and SD1 are simply the two-third values of SMS and SM1.Traditionally,for seismic design,engineers on the U.S.west coast have used a ground acceleration,with a 10% probability of occurrence in 50 years corresponding to a 475-year recurrence interval.350.3-06 Seismic Design of Liquid-Containing Concrete analysis and design of a liquid-containing structure.This meant that these procedures should cover both aspects of seismic design the loading side (namely the determination of the seismic loads based on the mapped maximum considered earthquake spectral response accelerations at short periods (S s) and 1 second (S 1) obtained from the 132000 prestressed concrete storage tank revised RFI 1spectral response accelerations in accordance with the 2006 International Building Code.Seismic design criteria to be used in the design of the tank is as follows a.Mapped MCE,5 percent damped,spectral response acceleration at short periods,Ss 22.9%g

spectral response accelerations in accordance with the 2006 International Building Code.Seismic design criteria to be used in the design of the tank is as follows a.Mapped MCE,5 percent damped,spectral response acceleration at short periods,Ss 22.9%g(PDF) Design of a Floating Roof Crude Oil Storage Tank of Ss = 2.5Sp for 5% damped spectral response acceleration required freeboard for the SUG III tanks shall be equal This recent study intended to design the crude oil storage tank using the 'IBC2003E' Program - CALCULATOR EDGE SUG I tanks design spectral response accelerations#0183;Web view'SM1' is the maximum considered earthquake spectral response accelerations for 1-second period as determined from Section 1615.1.2.'SDS' is the design spectral response acceleration at short periods as determined in Section 1615.1.3.'SD1' is the design spectral response acceleration at 1-second period as determined in Section 1615.1.3.

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