×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

ASCE 7-2002

ASCE 7-2002

ASCE 7-2002

(OP)
I am using ASCE 7-2002 seismic code for design of a horizontal vessel. I am using DISASU software. Can someone tell me what the following parameters mean?
Sds, I, R

In the data book given to me, I need to use the following parameters. Ss=0.20, S1=0.08, I=1.25, Soil Type= +D. How do I translate these numbers into Sds, I, R that the software is asking for.

Please direct me to the correct section of ASCE 7-2002 to read. As you can guess I am a newbie.

RE: ASCE 7-2002

Ss and Sl are EarthQuake Parameters

These factors are for short and long periods (0.2 and 1.0). These tables are found on pgs. 100 - 117 (ASCE 98)publication.


R is Response Modification Factor

Enter the value from table 9.5.2.2 (ASCE) as required. R is usually equal to 2.5 for inverted pendulum systems and cantilevered column systems. For elevated tanks use a value of 4. For horizontal vessels, leg supported vessels and others use a value of 3.0.


I is Importance Factor

This is the occupancy importance factor as given in 9.1.4 (ASCE). The importance factor accounts for loss of life and property. This value typically ranges between 1.0 and 1.5.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources