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  • Users: bf343
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  1. bf343

    Shot-Crete on Soldier Piles for Basement Walls

    jdgengineer- Sadly no, this 18' excavation does not have any tiebacks. So yes the deflection of the cantilevered soldier pile is a very real concern we have looked at. A little more back story, we did a very similar building with this owner not too long ago. For that basement excavation (18'...
  2. bf343

    Shot-Crete on Soldier Piles for Basement Walls

    Thank you all for the responses! JAE- I like the way you were able to "key" your concrete wall in with the piles. We are probably not going to be able to have that option as spacing the piles that far apart will result in too much moment in the piles during excavation, resulting in a pretty...
  3. bf343

    Shot-Crete on Soldier Piles for Basement Walls

    I have a project where we are placing a precast concrete building with a basement directly next to an existing building. The basement excavation depth is 18 feet. The owner and contractor want to look at using auger-cast soldier piles with a shot-crete wall for the basement excavation shoring...
  4. bf343

    Welded Plate Girder/Columns with "Wavy" Webs

    Thanks for the great replies. ajh1 - Thanks for the tolerance reference. The deepest column at the facility is 17", so 17/72 = 0.236" Therefore the 1/8" wave (1/4" high point to low point) is well within this. We were asked to do a facility wide review of their column damage. Majority...
  5. bf343

    Welded Plate Girder/Columns with "Wavy" Webs

    The height of the wave is about 1/4" or less. Not an extreme amount. Sandman21 - The damaged columns are why we were there. MotorCity - The discolored areas are dust and grime collection. I cleaned a couple spots off while there. We felt it had to be from fabrication, but wanted to get...
  6. bf343

    Welded Plate Girder/Columns with "Wavy" Webs

    Here is an additional picture. This is of a different column.http://files.engineering.com/getfile.aspx?folder=f94aeef7-9103-4c91-aa3a-60dc154abdba&file=2016-04-20_029.JPG
  7. bf343

    Welded Plate Girder/Columns with "Wavy" Webs

    We have a client who has a warehouse that is a pre-engineered metal building (PEMB). The PEMB columns and beams are welded plate girder shapes. In doing a walk through of the facility it was noticed that the webs of both the columns and beams are not flat, but are "wavy". It can easily be...
  8. bf343

    Wood members saturated with salt

    Thank you both for the information. I thought the interior of the section would likely be okay, but I didn't find anything to back that up. Thank you for the article. I would also agree with the increased fire resistance of the members.
  9. bf343

    Wood members saturated with salt

    Hi everyone. We are doing some work at a salt mine which involves some of the 1969 existing wood members. In checking the wood members for the new loads, the members (in new condition) are adequate. However, the wood members are "furry" from the salt exposure. It appears the salt penetrated...
  10. bf343

    Model dynamic blast loads on a building frame in RISA 3D

    We are working on a project at a Petrochemical facility where we need to reinforce an existing building to resist the blast loads from an accidental explosion on site. a blast consultant performed a blast study of the facility and has provided us with a reinforcement concept, blast loading...
  11. bf343

    Existing hoist u-bolt rating

    CANPRO- Thanks for the feedback. Yes, the bending of the u-bolt is a concern, and when I checked it, it is what governs the capacity. JedClampett- I agree that a u-bolt is not an ideal hoist attachment, however they are sadly everywhere at most grain elevators in our area. Our client wants a...
  12. bf343

    Existing hoist u-bolt rating

    Hello- I am analyzing an existing hoist beam and have a question on how to check the u-bolt hoist attachment. In the attached picture you can see the beam cantilever through a concrete wall and at the left end of the beam is a 3/4" u-bolt through both flanges. Both of the existing "hoists" in...
  13. bf343

    ICC 500 Quality Assurance Plan

    I have a school addition project coming up and the locker rooms will be storm shelters (tornado). In reviewing the ICC 500 Standard for the Design and Construction of Storm Shelters a quality assurance plan is required according to section 107.3. My question is, does anyone know of a place...

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