Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. dhengr

    Design for Storage Rack Anchorage for Gas Cylinders

    Smokiibear: Look at the EQ requirements for hot water tanks in homes, the process and storage tanks in industry bldgs. Are these for a fairly static storage situation in a building, multiple storage and handling loads of many tanks, or storage for transport, where that movement imparts...
  2. dhengr

    Help Reviewing a Gymnasium Roof System

    EagleCreek11: The overhead view of the roof surface suggests that that might be (probably is) a shallow hyperbolic paraboloid surface. They work well at spanning large column free areas and are a fairly light roof structure. The support systems, walls, buttresses, etc. should give some hints...
  3. dhengr

    Reinforcing of Existing Wood trusses for RTU

    Mfstructural: The RTU curb should not be by others, you design it to work for you. It should canti. 3'-1" on either side of the stl. bm. carrying the wooden roof trusses. The three cont. long members should be 6'-2" long, the two end members are double the truss spacing in length, and there...
  4. dhengr

    Sliding aircraft hangar doors - Pin connection replacement

    LexW.: I’m not an airplane hanger sliding door expert, but here’s my take on the problem. The larger door panels are about 16m long, btwn. pinned vert. joints, and about 16m high from a strong horiz. spanning fl. level beam to a top horiz. spanning beam which includes/takes the opening and...
  5. dhengr

    AWC - NDS - Connections - safety factor

    Taz112358: Let us know your test results and procedure, they might be interesting and telling. They could vary by how hard/deep you have set the screw head, crushing the outer ply of the plywood. They will depend on the type, grade, number of plys, etc., of the plywood or sheet goods. And...
  6. dhengr

    Hook Carry Bar - Rebar Shop Drawings

    Eng-Tareq: You say..., “ additional bars on the side...,” which side? We can’t see them from here. Why not ask the detailer?
  7. dhengr

    Guidance on diaphragm front wall with very large windows

    Bammer25: And, on the back side that exterior wall is a three story high wall? Then it looks like almost every vert. stack of windows is also in a different wall plane, so you have no larger wall plane, a long run of wall, despite the small widths of vert. solid framing (sheathed framing) which...
  8. dhengr

    Hood Support CMC 508.4

    Hawkaz: The 800lbs. also likely includes an EQ (earthquake) component which should/might be applied in any direction. Other mech. equip., like water heaters and storage tanks must be tied back to the structure for lateral EQ loads too. You should always read the code commentary. That’s often...
  9. dhengr

    Field welding a bolted splice connection

    A50860: Getting real engineering info. out of you guys is like pulling teeth. What you’ve shown so far is interesting in gaining a general understanding of what you’ve got and what you are trying to do. But, to answer your question, we need the actual fab., part details, assembly, and erection...
  10. dhengr

    Bending of aluminum sheet

    Mte12: I would grind a slight radius on the two corners and clean up the plate edges in the areas of the bends, over and above what Dvd showed. Otherwise edge imperfections will likely induce cracking at the edges of the plates when you do your bending.
  11. dhengr

    Best lateral/earthquake resisting structural system for 40 storeys?

    SatoshiNakamoto09: There you go..., if you would only move your butt to a meditation or a yoga forum, we would all be much less stressed out. PhamENG wasted his time giving you a very reasonable, respectful and informative response and you blew him off. This along with your sophomoric...
  12. dhengr

    Hi everyone, I am designing a st

    Eng_Girl: That looks like the lateral retaining structure/system for timbers, in a dam gate or sluice channel, to control the water elevation, and provide a spill way for overtopping of the water. I would shop fab. that member out of three plates. The downstream flange (thicker flg.) takes the...
  13. dhengr

    Rigid Connection without Steel Column

    GaryHStr: Some of us might call that a ‘cranked beam.’ With the dimensions of 8' horiz., by 10.67' at 45̊ on the slope, that rafter or beam would be about 4' wide on a shipping trailer, eminently shipable. I would shop weld that joint and be done with it. Design it as a cranked beam of...
  14. dhengr

    Gentlemen…

    MIStructE_IRE: Good to see you back here on ET and back into real life again. And, good-on-you for the recovery and rebound. Life is a crazy thing, and our profession is no less so. They all seem to want their solution yesterday, whatever you charge them is way too much, and you can’t drag...
  15. dhengr

    Truck trailer statics

    Geopat69: A five axle trailer is a very large cap’y. over the road trailer (low boy). Usually loaded from the front, and always going to be slightly heavy on the front w.r.t. the five rear axles, in the lt. wt. configuration, that’s why it lays down on the ground, when you disconnect the goose...
  16. dhengr

    Sister Full Length Joists Instead of New Beam

    SarBear: And, while the budget won’t allow for proper structuring of this screwed up mess, and they didn’t bother thinking about structure until the last minute, don’t forget the 2000lb. marble topped island they are wanting to put in the middle of the kitch. span, with its many chain sawed...
  17. dhengr

    Vibrational analysis on Rectangular tank

    Fazlur99: 5'-0" H x 7'-6" L x 7'-4" W is not a particularly large container as far as structural testing goes. But, many labs may not like the idea of that much water all over their facility during the testing process. It would seem that most any lab with an EQ testing ‘shaker table’ could do...
  18. dhengr

    Rotten cantilevered balcony beam tails.

    Prestressed Guy: I would look very closely at the ext. wall penetration area (the canti. brg. point/area) too. That, and the exposed ends of the 4x12s are notorious locations for rot if those areas are not perfectly flashed and maintained, to keep water off and out of them. Doug. Fir doesn’t...
  19. dhengr

    CMU beam bearings fracturing

    OhioPEeng: Try setting the edge of the brg. pl. back an inch or so, or the face shell thk., from the face of the conc. blk. Rake this joint, and/or don’t let them grout the thickness of the brg. pl. immediately under the beam flg. You may be getting some relative expansion and contraction or...
  20. dhengr

    I joists parallel to the exterior wall

    DoubleStud: This type of blocking detailing is really important where you will have a ext. deck, with ledger, etc., which has to be tied back into the int. floor diaphragm, for the lateral support of the deck. As Jerseyshore suggests, this blocking system should go back several joist bays into...

Part and Inventory Search

Back
Top