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 TugboatEng 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: *

  • Users: sundale
  • Content: Threads
  • Order by date
  1. sundale

    Professional Liability - Personal Assets in a Trust?

    Have any of you consulting engineering firm principals/owners placed your personal assets (home, investments, IRA, etc.) in a revocable trust as a mechanism to better shield them in the event of a potential lawsuit judgment exceeding your E&O liability insurance policy limits? I know I am...
  2. sundale

    Structural Forensic Work

    What is the story behind the all the job openings for structural engineering forensic work? Is there really that much litigation and insurance activity? Are these firms typically sweatshops that have constant turnover of engineers? It would seem that such a niche engineering market would not...
  3. sundale

    Structural Fill Pad Under Recip Compressor

    Situation: Large skid mounted recip compressor founded on a 4'-0" thick moisture compacted ABC fill pad over native sand. Skid rails are buried almost up to strongback beams’ top flange with compacted ABC ramps as well. Skid has developed excess horz and axial movements (and some minor vertical...
  4. sundale

    12F Roof Hinge Reinforcement for Explosion

    In a 12F production tank, has anybody seen a detail where there is a single additional horizontal 18" long fillet weld to the roof/shell joint located over a vertical shell joint? The stated purpose of this detail is to provide a reinforced hinge such that the roof comes off in an explosion...
  5. sundale

    Bar Grating - Continuous Spans and Negative Moments

    Consider a bar grating installed as say a two span continous beam over three supports. Is bucking of the bearing bars over the interior beam (due to negative moment) an issue, since the cross bars are welded to the top of the bearing bars? Thanks in advance for any opinion offered.
  6. sundale

    Not Stamping Engineering Drawings?

    I am a structural engineer in a consulting engineering firm that specializes in oil and gas pipeline and facility design for large production companies. The brunt of our work is mechanical engineering and controls system engineering (piping and processes), but we also do structural, electrical...
  7. sundale

    Controlling Lateral Force: Seismic vs. Wind

    What is the general consensus in regard to a what is deemed the "controlling" base shear in a lateral analysis? Namely, say you have E = 20 kip seismic base shear (ultimate) and a W = 10 kip wind base shear (service). IBC load combinations would say 0.7E to convert it to a service load: E = 14...
  8. sundale

    Specifying a Bridge Crane Capacity

    If one is specifying a bridge crane with say a 20 ton pick weight, do you call out a 20 ton or 1.25 x 20 ton = 25 ton crane? I know that per OSHA a crane is proof loaded to 125% its rated capacity and am a little unclear about who applies the safety factor on the load rating. The actual crane...
  9. sundale

    Dynamic Shear Modulus?

    Does anyone have any range of values for the dynamic shear modulus of a lean clay with a unit weight of 106 pcf? This is for a compressor pad design.
  10. sundale

    Steel Building without Shop Drawings?

    I would like some input on the following issue. I have a two story 190'x43' or so steel building. The roof is framed with bar joists with steel spandrels and columns and the floor is composite steel beams and girders with steel WF and tube columns. The lateral system is a steel OMRF at the...
  11. sundale

    AISC 341-02 Seismic Provisions with ASD Design

    I have two basic questions regarding the Seismic Provisions for Structural Steel Buildings if one is dumb enough to try an ASD design method. Question 1: To do a "traditional" ASD design, is it correct to design to ASD load combinations (i.e. 0.7E) and then decrease the load by the prescribed...
  12. sundale

    Common Nails Vs Air Gun Nails

    If recently read in one source to specify the shank diameter and length of a nail so as to get the Z value you think you are. This is supposed to be due to the fact that "air gun" nails are not the same as "common" nails. Another source, talking about diaphragm shear values, said to go ahead and...
  13. sundale

    Sloped roof snow load at a roof valley

    If one has a steeply sloped warm roof with metal deck roofing, and one wanted to calculate Ps (not Pf), would a roof valley be considered an "obstruction"? Namely, would it be appropriate to take the valley angle to compute Cs, not the rafter angle? I recall that the old UBC used to have a Cv...
  14. sundale

    Maximum Wall Rebar Spacings: IBC vs ACI

    Would anybody wish to comment on the bar spacings called out in 2003 IBC Tables 1805.5(2) to (4) as compared to ACI 318-02 Section 14.3.5? Namely, the IBC prescribes bar spacings from 32" to 72" o.c. in their concrete foundation wall tables whereas ACI Chapter 14 says 18" o.c. maximum. Since...
  15. sundale

    Stamping EIT's structural work

    What is the consensus regarding stamping the work of junior engineers at the firm. I have been asked to start stamping all the structural work in the office. It is good work and meets all the definitions of "responsible charge" so its no ethical dilemma there. My problem is more philosophical...
  16. sundale

    Diaphragm Chord in Deep Bottom Bearing Wood Trusses

    Does anyone have any good ideas about providing a wood diaphragm chord in 3'-8" deep bottom bearing parallel chord wood trusses on a stud bearing wall? I normally design the stud wall top plate for this force, but am not happy with OSB diaphragm tension and compression forces going through the...

Part and Inventory Search

Back
Top