In this NewsletterDear Colleague:
Using Retain Pro 2007?
Now available:Over 30% more information and
7th Edition of Basics of Retaining Wall Design
nearly every topic expanded, plus new subjects.
It's FREE with every Retain Pro order until 4-30-07 (Regular: $65)
See below for contents:
Our licensing policy
We continue to get questions about our licensing policies, so here it is again:
Our "Small office license" is for the 80% of our users who are smaller offices. It allows you to install (using your PAC) on up to four office/home/laptop computers, but only one simultaneous user is allowed. If installed on a server a second simultaneous user will be stopped. The "Site license" is for large offices installing on a network server with unlimited access by any number of engineers, but at one physical site.
BTW, we're seeing an increasing number of large companies adding Retain Pro for their branch offices - we do offer discounts for branch offices.
We've added TechLinks
A TechLinks button has been added to our home page (upper right). Click here and you'll find links to sites related to retaining walls and other web sites of interest. For example, the links to obtain seismic design data from USGS by entering zip code or latitude/longitude. Also earthquake information and activity maps for both the US and for Californians a map of seismic events updated hourly (average about 50 "events" each day!). Check out the links and let us know of other favorites you have and we'll post them. You can also copy and paste them into your favorite places.
More coming with AutoUpdate
Although there are no updates available now, some of you reported a "file not found" message when clicking YES when asked if you want to check for updates. This indicates a problem with your installation of RetainPro. The file named "RPUPDT2007.EXE" performs the actual check for updates and should be in your RetainPro folder and easily found and run.
If the update does not start from within Retain Pro you can run the updating program from your Retain Pro program group by selecting Start | Programs | Retain Pro 2007 | RP 2007 Auto-Update.
The first update will be available about April 3rd. At that time click YES when asked to check for updates, and check every few weeks thereafter. In this first download you will get:
Using LRFD for masonry
Use of vertical component of active pressure
Global slope stability
If water can seep under the footing the pressure above and below the footing will be neutralized, therefore the weight of water over the footing (pressure on the top of the footing) cannot be used to resist overturning. For this case enter 1 pcf for "density" (the program will not accept a zero value for density). However, be aware that if you enter 1 pcf for density the program will also use this for the toe side (we'll correct this in a forthcoming AutoUpdate) resulting in a slight error in soil pressure and overturning. For buoyant effect you can change the weight of the footing on the Material screen.
To check the wall when water is empty and earth is present on the toe side, you will need to do a reverse design since the program will not accept a negative (clockwise) overturning. Do a mirror-image design with the earth is on the heel side.
Counterfort retaining walls
Circular pier/column design
About verifying results
You want to feel comfortable with any software you are using. Although nearly every reported Retain Pro "error" is traced to faulty input, legitimate errors can and do occur. Retain Pro contains over 100,000 lines of programming code packed into nearly 4 MB, so there is always a chance for error. We investigate every report and remedy a problem as quickly as we can. Most errors can be easily spotted since an aberrant result is obvious to an experienced user, but if any result is suspect, you should verify it with a hand calculation. With very few exceptions, any result in Retain Pro can be verified by a five minute hand calculation! I recently talked with a user who questioned a result and spent considerable time trying to reconcile CalcTrac with the result. He could have saved the time with a quick calc. I faxed him my verifying calculation which took me three minutes, and I'm not particularly fast. (we plan to delete CalcTrac since it is not a complete trace of all calculations and can sometimes be difficult to follow, but more importantly it fosters reliance on output rather than encouraging you to perform your own verification).
My point: If you suspect a result, and have checked your input, do a hand calc. You'll benefit from the exercise, and if you do catch an error, we benefit too!
Incognizance award (meaning unaware of what one is doing)
Occasionally we get tech support questions that would be humorous if they weren't serious. Here is one prize winner:
The moral: Always check the applicability of ALL your input entries, particularly if retaining liquids.
Access past newsletters
They are all posted on our NEWSLETTERS link on our home page. Lots of good information and Technical Issues for your review.
Suggestions and comments
If you have suggestions, comments, or corrections on these Newsletters, or a technical item to contribute, we want to hear from you. Email me at email@example.com. Remember to check Open Tech Forum (bottom of home page) for other announcements and user posts. We also encourage you to post a review of Basics of Retaining Wall Design. Click on Submit Review at lower left of home page.
With best wishes,Hugh
Hugh Brooks, SE
Retain Pro Software
If you haven't upgraded to Retain Pro 2007 we offer five-minute delivery to your computer, plus the new User's Manual and the free copy of Basics of Retaining Wall Design, for just $195. ($295 if upgrading from version 6.1 or earlier). To order click here or visit us at www.retainpro.com. Offer valid until 4-30-07.
P.S. You are receiving this email because you are a Retain Pro user or have downloaded a demo and asked to be on our email list. This email list is for our use only to provide you with information, but if you do not want to receive future copies just email me at firstname.lastname@example.org and on the subject line type "Cancel", and don't forget to include your company name and email address where you received this.
Retain Pro Software div. HBA Publications, Inc. PO Box 826 Corona del Mar CA 92626 949-721-4099 email@example.com
© 2007 HBA Publications, Inc. All Rights Reserved.