thread507-352021
so, ya.. kinda clear as mud as far the application i need clarity on (unless ofcourse im reading it wrong again)....
when you are doing footing designs for METAL Building frames with no slab to count for contributory weight, it is a BIG DEAL to have to reduce your required...
Please comment as to the methods for extension of wet set anchor bolts that are sunk and too low to extend above the baseplate for the nut for metal frame building. discuss coupler vs weld please! we have opted for weld, in which case the welder is asking for details ofcourse (request comment...
i called the local WQCB official with the question : "can i use a FTU meter instead of a NTU portable "turbidity" meter? He KINDA said yes, but now i am not sure because he also said the "new" protocol actually has a TSS requirement not a "ntu". So, when i google something for a half hour and...
thread507-337096
it seems to me that if you got an 8 inch concrete (outside retaining wall say), carve a slot in the form and wet set embed 6.5" a full 10 inch wide (say 1/2" thick) steel stair tread, 300# pt load say at the end of the 3.5' wide stair cantilever, maybe a bolt for "dynamic load"...
this has come up before....
for open on one side structure, please offer comments to an interior (braced) wood columns with cantilevered steel side columns, flexible roof diaphragm system. all wood except for side columns (therefore a dual framing system) - (no shear walls possible)
seismic...
Need to suspend a septic waste line over a creek about 90 feet. Want to use pvc (a painted ("pvc can not be exposed to direct sunlight") outer 3-4" line around an interior supply 1 1/2" line) I can find (and also calculate) the maximum support points for the pvc in tables (plumbing code)...
question: should an eccentricity not be caused by a cantilevered beam on its supported column? seems to me that it should be, but i dont know/remember how to get at it (based on the worst case unbalanced loading). it makes a big difference in the column calcs.
possible for bid job..
16 foot cantilever deck with main beams 13 foot spacing (13 ft trib to the cantilevered 7x20 glulam beams which extend into the residence say 15 feet)...100 lb live load required!!! haha!
the glulams are rotted. NO POSTS allowed ofcourse by request by owner. idea is to...
never done one... a "no rise analsyis"
would it be worth the learning curve?... must back test with fema data and then model the moved and changed drainage channel the client made without permits to prove that there is no rise in the flood levels upstream (downstream?)... HecRas or other...
am i to understand that if use a bolted omf "u" frame (for a all window front one (or two) story building) for lateral resistance retrofit (to take the front of the buildiung lateral because there are only windows) i need to use the "tested and accepted" bolt configurations as stated by Fema and...
steel shipping container design of residence...
ive seen this on tv, the stacking of 2 (or three) steel shipping containers for a house. anybody have experience with the engineering involved (design category d or e) and coastal wind...
a client of mine wants to do one..
bdruehl (Civil/Environme)
1 Jun 09 19:21
ah... more "as-builts"!!! everyone's favorite!!! CBC 2007
10 foot existing masonry wall fully grouted with half inspection evidence and half contractor statement to come up with a confident #4 @ 24" vert and horiz full height/length, no openings...
i do not have the resources or time or (brain power maybe) to analyze the entire steel building done by third party 20 years ago. So.....
the utmost top roof members (8" deep z channels) failed under a heavy snow load (which the building was not designed for...apparently didnt have to be...
do i need to use a 1 1/2 for R for a free standing raised retail storage deck (mezzanine)... seismic design class E and and a required 25% of live load included for siesmic (right?) makes 31.25 + 10 dl = 41.25 # /sf!!! with R=1.5, im getting a .7E of .36!! so 15#/sf of storage! thats a lota...
trying to come up with cost effective portable temporary bridge design 12 x 12 feet. All steel construction and steel plate deck welded directly to beams.
where/how/tables? do i calculate the minimum thickness required of the steel deck? one way-two way loading, all tables and most...
5 1/8 x 18 glulam splitting at hanger bolts due to water damage... must remove entire splitting protion and replace with new glulam... (too far away from post for a cantilvered saddle splice... dont want to break into floor for new foundation directly under splice)
any thoughts as to the best...
several contractors have expressed distaste for my standard detail for elevated slab joist attachment to a ledger with the tension straps and the bolts, etc... admittingly, it does appear to be a pain in the rear
i am exploring an alternative: 'notching' the foundation stemwall or retaining...
What runoff coefficient is appropriate for a gravel driveway? I was going to use 0.5. I am using 0.9 for the concrete portion of the driveway.
Thank you,
Brett
