For the first time I am having to come up with equivalent horizontal & vertical acceleration for use with a static model.

The client has quoted UBC-97 zone 2A.
I do not have the above & also B31.3 now only quotes ASCE-7.

Having started to look thru' ASCE-7 I am left wondering which value to use for my accelerations, a) seismic base shear (12.8-1) which would appear to be for static G procedures or

b) seismic design force (13.3-1) which would appear to be for pipe design but I am not sure whether it is applicable to static G analysis.

Vertical accel. from a previous job was taken as 2/3 hor. accel. but i can't find anything to justify this - any ideas?

My other query is whether there is a way to convert the clients UBC figure to ASCE-7 Ss & S1.
I have found a figure for Ss & S1 off the internet (not USA) but would like to tie this back to clients figure if possible.
I have looked at TI809-4 but it doesn't seem to work properly with my adobe reader

Here's a current link to TI-809-04. Check Chapter 3 for a method of converting UBC-91 to ASCE-style parameters (Ss & S1).

http://www.hnd.usace.army.mil/techinfo/ti/809-04/ti80904.htm

ASME B31.3 - 2004 Edition Errata includes the reference to UBC. The removal of UBC from the seismic reference should be in effect for the 2006 Edition.

I had already tried that document, Their must be something wrong with my acrobat reader as all I get on the important page 3-12 is equation (3-23)
where

the rest is blank upto page 3-13 Ss & S1 figures for rest of world.

Thanks for the comment about the errata I had missed the fact that ASME had decided to go back to using either code.

When are we likely to see B31s?

My view of that pdf is kind of busted too but I believe all the information is there.

I understand that the "final" version of B31S will be reviewed at the B31 Mechanical Design Committee meeting next month in Atlanta. There is still an issue regarding allowable stress values.

I cannot predict when it will be issued.