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The twelfth edition of "The Procedure Handbook of Arc Welding" June 1973 shows a field weld flag symbol. It appears that the symbol was changed around 1970.

Thanks, Andy, for your quick response. However, I did not relate enough information about this problem. This caisson is really a pit with 2' thick walls and base slab. My concern is with construction of the pit and not the design. The site consists of 8 pits and I was looking for the most...

What is the best, permanent liner to use for an 8'-6" diameter X 15'-0" deep caisson installed in very dense, gravelly sand with silt (GP-GM) with no groundwater detected?

There is one good one, FastFrame, which can be downloaded free from www.enercalc.com. This is a good, entry level, program and easy to use. Included are sample programs, which you can modify to see how things work. Good luck and have a great day.

Thanks for the tip! JC

Is anybody familiar with or has anybody used the material Ductal, manufactured by Lafarge Corporation?

It doesn't seem to work

ghillis:<br><br>Thanks for the information.&nbsp;&nbsp;However, I thought that Cardinal Fasteners was out of Ohio.&nbsp;&nbsp;Is that true?<br><br>JC

I have been told that there is a shortage of <font color=red>ASTM A-563, Grade DH</font> nuts.&nbsp;&nbsp;Does anyone know if this is true or not?

Chris<br><br>I am familiar with Enercalc Fastframe and the bugs in it make it unuseable.&nbsp;&nbsp;I called Enercalc two years ago and asked them to fix it.&nbsp;&nbsp;They said they would but I haven't seen any action yet.&nbsp;&nbsp;The main problem is that when you want to display shear and...

It should be a simple cantilever beam problem.&nbsp;&nbsp;The AISC Manual of Steel Construction has the formulas you need to solve the problem.&nbsp;&nbsp;Good luck!

mann,<br>It's too bad that you can't send a sketch of the framing plan.&nbsp;&nbsp;But, the way I visualize the problem, is that you may be getting torsion in both the w8x18s anf the w10x26.&nbsp;&nbsp;The best way to eliminate this problem is to add one or two beams perpendicular toand between...

If this swale is a natural drainage feature of your neighborhood, you could have BIG problems trying to rerout or backfill it.&nbsp;&nbsp;There could be lawsuits from the city and your neighbors if the natural drainage is altered to an extent that damage occurs to other property.&nbsp;&nbsp;If...

If you are going to use reinforcing in your slab for crack control, please use rebar instead of welded wire fabric. Rebar costs more but it will probably remain in the location where you want it&nbsp;&nbsp;when the concrete is poured, whereas, welded wire fabric will probably be in the...

The best design source for slabs on grade is PCA.&nbsp;&nbsp;Get their publication &quot;Concrete Floors on Ground&quot;.&nbsp;&nbsp;They have a web site.&nbsp;&nbsp;Good luck!

I agree with brownbagg!!! You have to watch the concrete supplier like a hawk! Sometimes the the mix delivered to the site does not remotely resemble the design mix. Since there are so many other variables affecting the concrete, reject any truck that does not meet specifications WITHOUT THE...

Find the latest edition of Naval Facilities Engineering Command publication NAVFAC DM-2, Design Manual--Structural Engineering. The copy I have, dated 1970, has a listing of many different places in the world with their wind, snow, frost and earthquake design requirements. Good luck!

I worked mostly structural problems on the exam I took with a few civil (roadway design) problems. If you are familiar with steel and concrete, you should do well. Good luck!

To: Imagineer:<br> What is your live load on the bed?

To: MPHenry:<br> I have used Enercalc for many years and am currently using Ver. 5.1.3. It is good for simple, straight forward problems but lacks the versility of STAAD3. Support for Enercalc is non-existent. There are bugs in it, especially Fastfram. Fastfram, The analysis program similar...