ASME STS-1-2011 PDF

Buy ASME STS Steel Stacks from SAI Global. ASME STS-1– (Revision of ASME STS-1–). Steel Stacks. AN AMERICAN NATIONAL STANDARD. Three Park Avenue • New York, NY Revision: Edition, ; Published Date: January ; Status: Active, Most Current; Document Language: English; Published By: ASME International.

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These forces and moments were in both cases calculated by combination of the forces in correspondence with the two mode contributions along each direction using the square root of the sum of squares SRSS. However, for the purpose of comparison, the loads determined according to the static force procedure have been calculated and are summarised in Table 13 considering the first two modes in each direction. Having this aspect into consideration, static equivalent forces were calculated according to defined in the ASME-STS code, in order to check the amplitudes of vibration and stresses.

Register now while it’s still free! Table 14 summarises the equivalent seismic loads associated with the first two vibration modes along each direction.

ASME STS 1 | Emilio Puglia –

Thank you for helping keep Eng-Tips Forums free from inappropriate posts. The seismic response was then calculated for the un-corroded chimney at normal temperature and the heated corroded chimney.

Few production environments have the luxury of ordering new equipment to replace existing machines on their shop floor. The stack design was based on the following codes: It’s easy amse join and it’s free. The design response spectrum was calculated based on the one proposed in UBC for such damping, as represented in Figure 8. The significant discrepancy between the two approaches is explained by wsme very high overturning force at the top of the stack given by the static procedure, as a result of the very high mass of the supporting structure.

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Students Click Here Join Us! The results of a complementary verification of the sensitivity of the chimney to vortex aske are summarised in Table 8, following the methodology proposed in the ASME STS specification.

Design of stacks

The Eng-Tips staff will check this out and take appropriate action. As expected, the response spectrum method leads to a lower response than the static procedure. Join your peers on the Internet’s largest technical engineering professional community. Finally, it is noticed that the Scruton number Sc, defined as.

Design of stacks – Modalyse

Detailed colour maps of stresses in the lower part of the stack for the heated and corroded condition are further represented in Figure 11 to illustrate the small amplitudes observed in that part of the chimney. Design response spectrum according to UBC and parameters from Table Finally, the response spectrum analysis results based on the first 7 modes and on an SRSS combination are presented in Table 16, and colour maps of the stresses are shown in Figures 9 and 10 for the two chimney conditions, NTNC and TC, considering independently combinations of the seismic forces along X and Y directions with forces along direction Z.

A comparison aeme the base shear and bending moments calculated on the basis of the static procedure and of the response spectrum analysis is presented in Table 15, considering a response factor R of 2. I don’t have that standard. According to the UBC code, the static force procedure cannot be applied to this chimney, considering the corresponding height. These simplifications allowed for easier result handling and asje intact the principal horizontal actions resistant structural schemes.

Click Here to join Eng-Tips and talk with other members! Table 4 systematises structural data, namely dimensions, mass and damping ratio defined according to the ASME STS specificationforce coefficients and importance factor. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework. Therefore, seismic effects are evaluated on the basis of a response spectrum analysis. sts-1-20111

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But the “12” factor suggests that maybe d is supposed to be in inches rather than feet? By joining you are opting in to receive e-mail. Given the fundamental frequencies of the chimney, this structure is assumed as rigid for the purpose of wind assessment and therefore a static analysis was conducted based on the application of equivalent static loads.

The Sts–12011, Engineering and Construction AEC industry is constantly looking for process improvements to better manage potential project delays and costs.

Download Now The Architecture, Engineering and Construction AEC industry is constantly looking for process improvements to better manage potential project delays and costs.

Close this window and log in. Design loads and the methodology of analysis were defined according to the ASCE code. Are you an Engineering professional? The very high calculated amplitudes of vibration and stresses motivated the option to implement a tuned mass damper TMD tuned to the direction Y most flexible direction. Design of stacks Aliaga: Resources Few production environments have the luxury of ordering new equipment to replace existing machines on their shop floor.

For the other horizontal direction this TMD is not required as the vortex shedding critical velocity Such issues are the result of project complexity, size, uniqueness and regulation, as well as sts-1-22011 need for virtual team collaboration.

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Red Flag This Post Please let us know here why this post is inappropriate. Seismic effect According to the UBC code, the static force procedure cannot be applied to this chimney, considering the corresponding height. Numerical models of both the original and the reinforced structure were developed.