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  • Users: rdubs
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  1. rdubs

    Vaulted Hip Roof

    Since you have steel tie beams and columns, would it be possible to make those the moment connections thus reducing the moment at the base of the columns? Looks like you have the makings of a tension ring with the steel tie beams. The LVLs, if fitted tightly at the peak with the proper...
  2. rdubs

    Reinforced masonry using internally-insulated CMU

    Very good point Dick. Too much of my time is spent in non-industrial projects.
  3. rdubs

    Reinforced masonry using internally-insulated CMU

    If insulation is important, so much so that specialty CMU and multi-wythe is being considered, why not look at insulated concrete forms? Insulation and strength are both potentially better and labor goes way down.
  4. rdubs

    Denso tape around anchor bolts

    Not sure why full-length threading would be required as long as the threaded length is sufficient to tension the bolts. I don't see the tape being used to compensate for lack of threading. Could be that the tape is being used as a bond-breaker so that the bolt can be properly stressed along its...
  5. rdubs

    Large Diameter Pipe Spec

    Take a look at ASTM A-134 and A-135. Pipe in large sizes is very application-specific (made to order).
  6. rdubs

    Wood Truss - Improving strength of Nailed Member Joints

    The shed has survived since 1990, so I wouldn't worry about snow loading, etc. The purlins are likely okay if there is no distress - it is common to install them on-edge without blocking in post-frame construction. The LFRS is via roof and wall diaphragm action. Your problem is confined to...
  7. rdubs

    Method to install strap steel diagonal shear restraints on wood frame building

    Have you considered adding structural sheathing to the inside surfaces of the columns?
  8. rdubs

    Log Beams

    NDS chapter 6 provides design information for round timber poles.
  9. rdubs

    Generator Pad Design

    Another good reference... mostly about grouting but also covers foundation and anchor bolt design. https://www.amazon.com/Grouting-Handbook-Step-Step-Equipment/dp/0123908469/ref=sr_1_1?ie=UTF8&qid=1489177594&sr=8-1&keywords=The+Grouting+Handbook%3A+A+Step-by-step+Guide+to+Heavy+Equipment
  10. rdubs

    Residential basement wall footing design

    The IRC contains prescriptive minimum dimensions for residential footings, including 1500 psf soil conditions... TABLE R403.1 MINIMUM WIDTH OF CONCRETE, PRECAST OR MASONRY FOOTINGS. Is there a reason this code section would not be applicable?
  11. rdubs

    Inclined RC lintel

    Could you make the concrete lintel span horizontally at the highest point in the opening and light-frame the angle to bring the opening to its final geometry? Is the opening for a window? If you have to have the angle in masonry/ concrete, you might want to discuss this with the mason to find...
  12. rdubs

    Elevated Concrete Slab - Garage Over Basement

    In my area, it is quite common to use precast planks for this application. No support beams are required for your short span. The precast company's engineer will design the planks and provide the installation instructions. They may even set the planks for you. A topping slab would be applied...
  13. rdubs

    Designing my first FEMA tornado storm shelter

    Based on JAEs detailing comments and the possibility that the space might need to be conditioned, I would consider using insulated concrete forms for the walls and the roof. This would provide the strength you need and would eliminate most of the detailing concerns raised by JAE since the...
  14. rdubs

    Designing my first FEMA tornado storm shelter

    What are the envelope requirements - will the space be conditioned and used for other purposes?
  15. rdubs

    Crack Mitigation Membrane

    If you are working with a gym that employs barbell weights, then none of the materials you are considering will be durable. Cover the bare concrete with rubber matting or the owner can build wooden platforms where the lifting will take place. Due to the impact loading, I would not try to level...
  16. rdubs

    Truss Heel Blocking

    I agree with medeek - bringing the shear panel up to the roof diaphragm allows additional nailing where the roof sheathing uplift is the highest. Drill round holes to get the appropriate ventilation area.
  17. rdubs

    Calculating the height of a slab of a structurally insulated panel system

    My apologies Lissetteacn, I am not familiar with that product.
  18. rdubs

    Calculating the height of a slab of a structurally insulated panel system

    Your description does not seem to match the pictures you reference. The concrete is all placed above the insulated concrete form (there is only one layer of concrete). The depth of the concrete joist formed is dependent on the particular form depth chosen by the engineer (several depths are...
  19. rdubs

    Metal Stud Bracing - Brick cavity wall

    Are you suggesting that the brick veneer can take the place of structural sheathing to restrain lateral forces on the building? I would be very nervous about doing that.

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