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  1. FootNMouth

    Cracking in Freshly Placed Concrete Columns

    I appreciate the responses which reinforce the message we have already delivered to them. We are getting resistance from both the Contractor and to a certain degree the Client so wanted to make sure we were not off base.
  2. FootNMouth

    Slab cracking - opinions requested

    Appears to be some delamination of the concrete as well, what was the specified and tested air content in the mix?
  3. FootNMouth

    Cracking in Freshly Placed Concrete Columns

    We have a project where upon removal of the forms there was one column that had significant voids at the top. Apparently, they had to use a sonotube form on this column and it blew out at the bottom during placement. The other columns though are also showing cracking patterns that I have not...
  4. FootNMouth

    Weathered wood framing

    If framing within the metal plate connected wood trusses are the concern, then I recommend having the specialty structural engineer who sealed the truss design drawings assess them. WoodWorks may be of some assistance in finding an expert but I would not be too hopeful.
  5. FootNMouth

    OSHA Mobile Platform

    thread507-103228 We are designing a mobile platform (see attachment). The client has indicated that the platform will be used by maximum of (2) workers at a time. We are intending to use 300 lbs to account for a worker + tools. OSHA requires we design the platform for 4x the maximum intended...
  6. FootNMouth

    Precast Plank Grout

    There is continuous grout and rebar in the keyways between adjacent panels. Panels are 4' wide. Below is plan view showing this grouted keyway. We have directed them to remove the masonite board, our concern was how much grout will follow into the hollowcore voids. Our detail specified a plug...
  7. FootNMouth

    Precast Plank Grout

    Please see the photo from the pre-pour and out typical detail below. We had specified to use core plug to keep the grout from penetrating into the cores. The contractor did not order these in time and is now proposing to use masonite board as shown in the picture below. We believe there is an...
  8. FootNMouth

    Canopy Load Combinations

    We recently received a deferred submittal for an aluminum canopy that is cantilevering from our our structure (HSS girt), see image below. In the Design Criteria, the signed and sealed submittal had the following notes: "Roof maintenance not permitted during design event(s) as roof live...
  9. FootNMouth

    Composite Deck on Non-Composite Steel Beams or Joists

    @dik thanks that did answer the question. Just wanted to make sure as I do not see it often from other firms.
  10. FootNMouth

    Composite Deck on Non-Composite Steel Beams or Joists

    In our market composite steel beams with concrete on composite metal deck is a common framing system, however it's cost increases dramatically on smaller projects (footprint less than ~10,000 SF) due to many reasons with one being the cost of renting the Nelson stud guns to install the shear...
  11. FootNMouth

    Slender Underground Storage Tank (Wet Well for Lift Station)

    The AHJ does not allow RCP for wet wells over 6'Ø. I have spoken with a few contractors in the area who have done it this way albeit for much larger tanks. They cast the sections in a starter pit and then sink them by excavating out the interior. This is still referred to as the caisson...
  12. FootNMouth

    Slender Underground Storage Tank (Wet Well for Lift Station)

    I am designing an 8'Ø x 26' deep x 10" thick wet well. I have studied the PCA publication "Circular Concrete Tanks Without Prestressing" however the H^2/Dt values provided in the charts don't come close to meeting my calculated value (89.3). Is there another resource or is my only option to use...
  13. FootNMouth

    Loose Lintel - Anchor into Backup Wall

    Follow up questions, at what opening width or height would you not be comfortable relying on the brick ties?
  14. FootNMouth

    Loose Lintel - Anchor into Backup Wall

    I have a 8'0" wide double door with a loose lintel above that is supporting brick veneer. The backup wall is CMU. Should I anchor the loose lintel into the masonry lintel in order to transfer suction forces or it is standard practice to rely on the brick ties? Is another option to design the...
  15. FootNMouth

    Value of Young Engineer

    Thanks Swiver. I agree, I will not be ready to venture out on my own after passing the PE. I feel that I would need around 8 of experience before even considering it.
  16. FootNMouth

    Value of Young Engineer

    All, Every year I get glowing reviews from my project managers telling me that I am exceeding expectations and ahead of the pack in regards to my peers, however I do not feel that this is being adequately portrayed to my boss whom I have never worked with directly. I am basing this on the fact...
  17. FootNMouth

    Design Deficiencies Caught During Construction Administration Phase

    Thank you for the responses. I have incorporated both of these examples.
  18. FootNMouth

    Design Deficiencies Caught During Construction Administration Phase

    All, I am going to be giving a presentation to first year graduate engineers about the construction administration phase of a project. In order to provide concrete examples on the importance of the CA phase I was hoping to use some specific example of when a major design flaw was caught or...
  19. FootNMouth

    Cold Form Framing Attachment

    Are there any guidelines or code statements in reference to what are acceptable CFMF attachments to structure? I have a steel building that has exterior stud walls. In the shop drawing the studs are shown attaching to the bottom of wide flange beams for lateral support. We did not account for...
  20. FootNMouth

    Belled Pier Capacities

    Received a geotechnical report for a project site that has expansive clay soils. In the report is states that the belled pier capacity is to be reduced when the spacing of the bells is less than 3 bell diameters (clear space) based on the larger pier. The reductions are 40% for 2-3 diameters and...

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