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: Rjeffery
  • Content: Threads
  • Order by date
  1. Rjeffery

    Spot testing

    Is there a reliable acid spot test to determine if an alloy is predominantly Ti? The best way to test something is to squeeze it, slowly, until it breaks!
  2. Rjeffery

    Fabrication Shop audit question

    I posted this in the AISC Code forum. The reply I received was cogent and validated my thoughts on the AISC Check list but I was hoping for more thoughts from the experts. I am to conduct an audit of a steel fabrication shop as required by the IBC special inspections section and per the...
  3. Rjeffery

    AISC Fab Shop Audit

    I am to conduct an audit of a steel fabrication shop as required by the IBC special inspections section and per the structural engineer of records (SER). I am a CWI, I am sure of my ability to audit that part of their records. Is there a check list for the remaining AISC part of the audit...
  4. Rjeffery

    Acceptable Misalignment of Stone Facade Panels

    This may be more in the "Art of Architecture" realm, but I nave been unable to locate any real information. My question is: In an existing building, how much displacement or misalignment (from vertical) of stone panels is acceptable? The panels are 6-8 inches thick and the largest is 4x5...
  5. Rjeffery

    seam welded pipe for pressure service

    At what size (NPS) is seam welded pipe for pressure service normally installed? (pre-1950s) The best way to test something is to squeeze it, slowly, until it breaks!
  6. Rjeffery

    replication metallography

    I have been unsuccessful in locating a procedure for performing metallographic examination (as pertaining to seam welds on steam pipes) and then replicating the results. There is great volumes involving the use of metallographic replication, especially on EPRI’s site, but no procedure(s?) for...
  7. Rjeffery

    Pressure Vessel Stamp Question

    I was looking at an unfired pressure vessel made in PA (USA) in 1967. The manufacturer no longer exists. The Vessel carries a "U" stamp, It also has a "W" stamp and a "CU" in a shield rather than a rectangle. Whay are the "W" and "CU"? The Vessel also has an ASME number. Would that provide...
  8. Rjeffery

    open steel joist and attachment of wall to bottom cord

    Is it acceptable to use self-tapping screws or power actuated fasteners to attach light gauge steel framing along the bottom of a bar joist (long span) to form the top of a sheetrock wall? The joist will not support the wall other than for lateral stability until the end wall is completed. The...
  9. Rjeffery

    UT pipe Tm Correction

    I have been unsuccessful in finding a formula for correcting (reducing) wall thickness readings of carbon steel pipe, taken using UT pulse-echo, when the pipe is over ambient temperature. The best I can come up with is the “Reduce by 1% for every 100 degree (F) rise above 70 degrees” rule of...
  10. Rjeffery

    Marine Boiler Blow-down

    I remember performing UT thickness testing on surface, soot, and bottom blow piping. what does this blow down process actually do and why would the thickness measurements be required every 6 to 18 months? Thanks, in advance.
  11. Rjeffery

    NDT Forms

    is there a place where I can find standard ndt/nde forms such as recording Group I PT results?
  12. Rjeffery

    Fitness for Service, piping

    I am trying to locate references that will help me determine if piping containing steam (for heating) has lost sufficient wall thickness to require replacement. The B31.1 has a section on fitness for service but it is limited to the boiler and feedwater systems... Google is of little use. :(
  13. Rjeffery

    Designation of Bolted Connections...

    When drawing slip critical, direct tension or other bolted connections that would require other than a snug tight condition, how are these connections designated on prints?
  14. Rjeffery

    IBC [International building Code]

    I don't know where to put this. In the IBC [and other building codes] there is a paragraph that directs the owner to procure a[n independant] testing and inspection agency when a structures that more complex that a residential dewlling is being build. Can anyone help me to locate that...
  15. Rjeffery

    Where can I look to find the composition of steel used for ASTM A 53?

    Where can I look to find the composition of steel used to make ASTM A 53 and A 106 pipe? I have some old(er) pipe that I need to evaluate its in-service condition that may or may not be ASTM spec pipe... No records are available to me. I want to make sure that the steel I am using to...
  16. Rjeffery

    Rock Blasting Volume Calculations

    Rock was encountered on my job site while excavating for a stormwater mamagement pond. The contractor has offered a unit price for the blasting of the rock. I have asked the contractor to explain how they will calculate this volume but it seems they are adding in the volume of the overburden...
  17. Rjeffery

    Quantification of Qualifications

    Is there a way, a referrence or an established method of quantifying the qualifications of a contractor so that the low bidder may not get the contract because they may not be as qualified as a high(er) bidder? Subjective measurements tend to lead to litigation...
  18. Rjeffery

    LA Abrasion VS ASTM C1138 Wet Method

    I have to test the competence of rock that will be used as features in a recirculating white water rafting/canoe course. My designers are familiar with the LA Abrasion test (ASTM C535) and feel that the test is appropriate. I think that using the wet method for testing concrete abrasion...
  19. Rjeffery

    Repair of "Pumping" Areas

    In a parking lot, a contractor, after a failing proof roll, removed about a foot (`300 mm)of overly moist material and placed Mirafi (500 I think) in the bottom and placed a single lift of (crushed) recycled concrete AASHTO 21 gradation into the excavation. Yes, I know that the lift is to thick...
  20. Rjeffery

    Developing Technicians

    First, please check out my profile. I am thinking of starting a business teaching people to be engineering technicians in the civil discipline. This, I suppose, is marketing investigation. but what I really want to know what you think and feel about this type of venture. I want to teach...

Part and Inventory Search

Back
Top