Project: Snow Melting under parking lot and alleyway. The kicker is that occasionally a 15-ton crane to remove rooftop equipment, etc. sets up in the alleyway.
The manufacturers of the hydronic snow melt system require insulation under their tubing because the water table is within 8 feet...
Not to be flippant but the short answer to your question is "Yes, it's called a hydrogen bomb." As exnavynuke pointed out, if one is trying to use the energy of the fission to induce fission, the heat, etc are to great to be uncontained. (Notice, I did not say "uncontrolled". That is a very...
While it is absolutely true that "if the footing is made heavy enough and reinforcement is put in the top it could resist any frost heave.." In practically it is not. Very few buildings are heavy enough and strong enough to resist frost heave. (This means NO houses and few building short of...
How do I model knee braces in the RAM Structural System? The program has inputs for horizontal braces and other inputs for vertical braces to take lateral loads but I can't find anything on how to put in a knee.
Anyone done this in RAM?
TIA,
Imagineer
Now to really stir the pot...
At the risk of being called a heretic, why the big push for the metric system or SI or whatever the "official" name is? (Yes, I know there are technical differences but on normal human scale these are insignificant.)
I'm not trying to be a pain, but being a US...
While doing a google search for some frequency information, I was sent to this thread. Should have known to check the Tips first. :)
A quick estimation of building natural frequency is 0.1sec per story. Note that this is not the resonance of the building just it's natural frequency to...
Possible correction to Fawkes post. You need a "]" square bracket after scf:=. The keystrokes then become scf:]answer}condition.
What do you mean by "pr?0.7". Is the "?" supposed to be <,=, or >?
More help to follow when I know what this means... Imagineer
The "Manual of Steel Construction, LRFD 2nd Ed.; Vol. II:Connections" has some pretty good examples of just this sort of thing. I'm not sure if the same examples are in the new 3rd Ed. but you get a year's free AISC membership if you purchase it before April. [thumbsup2] Imagineer
You could design the beam and the column for their respective worst-case scenarios. Design the beam as simply-support and the column as moment-connected. It's conservative but in reality there will be some fixity which is very hard to quantify.
Imagineer
I would say that it is the minimum strength of all of those. If the dowels are shallow, i. e. less than 8 inches, you might also have a pull-out problem.
Imagineer
As to the "raison d'etat"... It's been done. The US did the N.S. Savannah which you can visit at Charleston, SC. The Soviet Union built several, mostly for raison d'état because the USSR wasn't profit driven. Don't have the latest Jane's to see if the cargo ships are still being...
Check out
-Engineering spreadsheets Forum (1554 members) forum770
and
-General engineering computer programs discussion Forum (1105 members)
forum724
In the Engineering Computer Programs area. Imagineer
I use a matrix method as follows:
bar_dia := {0.00 0.00 0.375 0.500 0.625 0.750 0.875 1.00 etc.}
a.s := {0.00 0.00 0.11 0.20 0.31 0.44 0.60 0.79, etc.}
Note the first to 0's.. this means that the position is the rebar size.
so a.s[7 gives me the area of steel for a #7 bar and bar_dia[7...
Find a marine engineer.... Seriously, there are many other factors such as wave action, wind action, and tidal forces that will actually govern your design. Wind and Wave will literally rip your structure apart if you do not design for them properly. Imagineer
