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  1. EngineeringEric

    Check Moment for Weld Connections

    As others have said, why? this looks like a whaler-type configuration on the sheet piles so why are we transferring the moment to the MB1? If you need to, I'd recommend putting two stiffener plates in SB! vs one in the middle, but still.... where is this moment going? If nowhere direct than...
  2. EngineeringEric

    mobile home trusses

    glue and 8d nails. maybe even glue up and nail half the nails. then install the second half after the adhesive cures.
  3. EngineeringEric

    Unknown PEMB Roof System

    tectum deck on a space truss. you will likely have a hard time showing this working for new load unless the unit weighs 10-15psf. thats been my experience with these systems and with the amount of effort it'd take to analyze vs the budget we can actually charge.
  4. EngineeringEric

    Pallet Jack and Racks on Wood Floor System?

    not sure the state of it all but maybe adding a second layer of 1-1/8" sheathing would help, or possibly a 3/4"-1.5" layer of gypcrete/LW cementitious float?? The moving jacks feel like the biggest hurdle. excluding racks parallel to the floor-joist system before you reinforce that :)
  5. EngineeringEric

    Sleeve in Historic Masonry

    what battle isn't uphill in our line?! I shouldn't smile typing that as much as I should cry but so be it. There are a few larger companies that do good work around here. Richmond Primoid usually does good work in our experience and for smaller projects (house size) there are some great...
  6. EngineeringEric

    Sleeve in Historic Masonry

    Well now that I can say I have numerous offices with different services, we do it. It isn't that expensive when part of a bigger project. We have to ship a few chunks of mortar to our lab in Cincinnati. We often include it in our proposal as a recommended line item and have the discussion of the...
  7. EngineeringEric

    Sleeve in Historic Masonry

    Pham, I would recommend not drypacking with just any grout. I do recommend drilling and filling in, but filling in should be a soft mortar. Just like the rest of the wall, for an old building all your tuckpointing should be with soft mortar, preferably test the mortar for composition but no one...
  8. EngineeringEric

    Enlarging a wall footing

    Can you underpin with a wider foundation? I agree, you can't rely on what is shown in your first detail. I see it built, but I don't agree it works on paper for any substantial load transfer.
  9. EngineeringEric

    Shop Drawing Review?

    Don't review it until you have a contract. Get a new contract with the current rates and make sure you were paid in full for the past work. And yes, you are 100% deserving of full compensation for the last review and the current review, and if they change it again the next review. If you feel...
  10. EngineeringEric

    Seismic return period reduction for amusement structure

    If it is permanent, then it should be same as the building next door. If it is a temporary structure like a moving carnival I could see you use a lower return period. When we engineer these we use the standard ASCE 7 (US code I know...) period for these structures as they will last 25 years...
  11. EngineeringEric

    Would you pour wet concrete against an exposed steel beam?

    I'd say to use a drypack under this, one that can do your height of +4". We dry pack under columns all the time. Side note: i'd be concerned with how the block was placed as it doesn't appear to be locked to the perpendicular wall like a pilaster. it looks like a single cell column that appears...
  12. EngineeringEric

    Tectum Decking Dates?

    As scary as it is, it is still used today. I would think you are better dating the building through other means or a combination of architecture looks 70, tectum, carpet is shag orange, and the breaker box is dated 1975 :) OR do what i know you likely will, see what year has the weakest joist...
  13. EngineeringEric

    Post baseplates along varying grade

    Why not just keep the bolts with a 4"-5" projection and use a rounded structural hillside washer for each anchor bolt/nut? The Baseplate leveled with grout as you noted and the hillside providing the bearing you need
  14. EngineeringEric

    Residential Slab-on-Grade Crack Control

    We lean on Enable's Option 3 for all Slab on grades showing a nice grid/aspect-ratio/corner details, but we add in the notes of Option 2 always. When we can, we state that the sawn joint plan is a recommended plan and shall be reviewed with the finishes and concrete placement. it sounds like a...
  15. EngineeringEric

    Housing Projects

    I've done a few with an architect, we designed what would be deemed a little house at 12ft wide and about 30-ish feet long, a studio of sort space with a loft on one end and a private room. these were designed for veterans and a small veteran family. they are pretty simple to build and have...
  16. EngineeringEric

    Friction Collar for marine Wrok

    Static Friction(Fs)=Static Friction Coeƒƒicient(μs)*Normal Force(N)
  17. EngineeringEric

    Moisture level in concrete slab

    you may want to have the epoxy rep meet you. the project is big enough they will. I'd find it hard to believe the ambient room temparture or RH effects the vapor transmission and moisture content of the slab much, but i don't know your site. You also could hire a forensic engineer and get legit...
  18. EngineeringEric

    hollow section buckling

    I think you could look at the side walls as webs, and use a similar approach as AISC has for compression loads in webs (often used for W-sections), just you have two webs and they cannot be reinforced easily. Assuming you have a concentrated load here.
  19. EngineeringEric

    Help with bidding a project

    Come join the hoity-toity pockets sometime! Plus then we can try to take more work from those southside large firms! (ignore that my soul currently is owned by a mega-firm!) I'll add, I am now writing a proposal and have done the %construction, Sheets, and my own tasks x hourly rate method. the...
  20. EngineeringEric

    Help with bidding a project

    Pham, you'd do that house for 9K or even 12K? you are driving prices down for us [tongue] I imagine you produce very high quality work with your knowledge you share here, your clients are lucky to get your skill level only working on their projects! Right now the last custom house we did was...

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