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: MER3
  • Content: Threads
  • Order by date
  1. MER3

    ASME Section III Flange Design

    Posted this a week ago on another forum and didn't get any hits, so reposting here. Analyzing a FF flange per ASME III and am confused about a few of the terms in the code. Reference Appendix XI and Non-Mandatory Appendix L in the 2004 version. 1. The HG term used to calculate flange bolt...
  2. MER3

    ASME III Flange Design

    Analyzing a FF flange per ASME III and am confused about a few of the terms in the code. Reference Appendix XI and Non-Mandatory Appendix L in the 2004 version. 1. The HG term used to calculate flange bolt stress. The definitions in XI and L don't match, and neither is very clear. Per App. XI I...
  3. MER3

    Vessel Nozzle Design per ASME VIII

    I have a nozzle I am evaluating to teach myself. I am trying to use the guidance in UG-37 but am struggling. The detail in Table UG-37.1 assumes the pipe is attached to the vessel inner wall and reinforcing pad by fillet welds. My situation is different. The pipe is welded to the vessel outer...
  4. MER3

    Fracture Toughness for Cast Iron

    I am trying to apply the Paris Equation to some cast iron piping and coming up short on the fatigue properties. Everything I can find is for steel. Does anyone have a good resource for cast iron fatigue? I found one paper with some values for fracture toughness but I'd like to see if anything...
  5. MER3

    Allowable stress on a flare bevel groove weld

    I am looking at a flare bevel groove weld and trying to determine the allowable stress on the weld. The 9th edition of AISC has cases for partial pen. welds in several orientations, but I do not see one for shear perpendicular to the axis of the weld. Am I safe in treating it similar to a fillet...
  6. MER3

    Truss Reference Material

    I am looking for some more in depth reference material for truss analysis. The standard methods we were taught all assume pinned members at each node. Not all trusses are built this way (members continuous across several nodes) and I am trying to analyze them using hand calcs/matrix methods...
  7. MER3

    I Beam Reinforcing Question

    We built a cart to handle a 35kip heat exchanger. Due to an interference, the construction crew want to modify the cart as shown below. The beam is a W10x30 and they need to remove 6" of the beam for a clearance issue. Obviously solution 1 is to just not do it, but I am seeing if it is feasible...
  8. MER3

    Pole barn with ridge beam

    Father in law has asked for some advice regarding a project. He is building a barn that will measure 48'x30' with a roof supported by a ridge beam and a 4/12 slope. He wants to support the ridge beam every 16' but would like to not have any columns in the interior. He wants to run a post down...
  9. MER3

    Beam Connection - Fixed or Pinned

    We are debating this in the office. I am designing frame that will be constructed as shown on the attachment. My question relates to how to treat the connection. My coworker is saying to treat the connection between the perpendicular beams as a simple connection (ie no moment transferred to the...
  10. MER3

    ACI 318-14 Chapter 17

    I am working through the anchorage requirements for calculating the pullout capacity of headed anchors in concrete. My question relates to the reduction in hef allowed per 17.4.2.3. Is this reduction only allowed when calculating the new ANc, or does it also apply to ANco? This causes the value...
  11. MER3

    Single Angle Bending

    I am trying to wrap my head around AISC 9th edition angle bending. I know I should be using newer codes, but we aren't allowed to where I work. Anyway, going through the specification for single angle bending, for an equal leg angle I am allowed to use the geometric axis provided I calculate...
  12. MER3

    Single Angle Stress Calculation

    I have a structural steel textbook with one example for calculating the stresses in a single angle subject to flexure. I have about 75% of the information I need to understand the concept completely. I understand that you have to calculate the product of inertia in order to properly calculate...
  13. MER3

    Tank Repair

    I have an 10000 gallon above ground oil storage tank that was imploded due to operator error/ vent abuse. The vent was intentionally clogged by someone trying to do a good deed. Pumping it out caused it to implode. Long story short the tank is now crushed inwards pretty badly. Before I even get...
  14. MER3

    U bolt Question

    Using a U-bolt to clamp a plate to a structural pipe. Assuming both of the nuts on the u-bolt are torqued to the same torque, would the tension in the u-bolt itself be the sum of each of those preloads? For a bolt with a single nut, I calculate preload F from F=kD/T. For a u-bolt with two bolts...
  15. MER3

    Shear Stress in an I Beam

    I am checking a beam for shear and am trying to decipher the code requirements for shear. .4FyA is the allowable stress, but the issue is with calculating the stress in the beam to compare to allowable. For an I beam, I ignore the stress in the flanges and focus on the web. Taking the area of...
  16. MER3

    Cast Iron Specifications

    I am putting together a specification for a project and am not quite clear on specifications used in the 1960s. I am tying 3" DI pipe into existing Cast Iron piping using modern DI fittings. I have the old specification that these pipes were built to and it calls out cast iron piping...
  17. MER3

    Rebuilding an eroded slope

    I am looking for some suggestions on how to rebuild an eroded slope. The soil is mostly fat clay. When built, the slope had a 2h:1v slope to it, but over the years the top has gotten steeper while the bottom has gotten shallower due to sediment washing downhill. The toe has also begun eroding...
  18. MER3

    Parking Lot Runoff and Erosion

    I have a large parking area, probably 1 acre in total. It was built adjacent to a river and is supported by sheet piles in some spots. My problem is runoff related. We have storm drains installed in this parking lot that go directly to the river. I am trying to divert as much of the runoff as I...

Part and Inventory Search

Back
Top