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Recent content by RMunoz1361

  1. RMunoz1361

    Would you go back to get an MBA, if you already MS?

    I am considering going back and get an MBA, but do I really need it is the question. I already have my MS, PE and MLSE certification. Need some advice.
  2. RMunoz1361

    Large Concrete Tank Design

    JAE, Like always every contractor has there preference. RMunoz
  3. RMunoz1361

    Large Concrete Tank Design

    JAE, I have heard opposite of what you have heard from contractors and being a former one myself. Installing tapered forms requires more labor such as special detailing at corners, since these corners bars will vary in length (unless you make some standard sizes). The only downside with...
  4. RMunoz1361

    Large Concrete Tank Design

    Arlord, Yes, you would have to stop the reinforcing at the expansion joint through the slab plus wall and use some smooth bars to transfer the shear, etc... As for the crack control you would check for bending in both directions. Check the Mx-bending near the base wall at the center of the...
  5. RMunoz1361

    Large Concrete Tank Design

    ARLORD, You probably remember reading my post on a previous thread that you started, if not here it is with somemore info in it: I designed an aeration basin matching these dimensions (146-ft long x 50-ft width x 27-ft height). Since the L/H was greater the 2, for simplicity the wall will...
  6. RMunoz1361

    Large Concrete Tank Design

    hokie66, You got what I was trying to saying about doubling the horizontal reinforcement near the base to reduce the vertical cracking due to the wall wanting to shrink while the vertical dowels are being restrained by the already cured foundation/mat. ARLORD, I placed a 6-feet wide...
  7. RMunoz1361

    Large Concrete Tank Design

    ARLORD, I recently designed an aeration basin matching those dimensions (146-ft long x 50-ft width x 27-ft height). Since the L/H was greater the 2, for simplicity the wall will perform as a cantilever member, unless I restrict the top of wall. The basin had an immediate wall running parallel...
  8. RMunoz1361

    PAD EYE CALCS

    The 13th Edition AISC steel deign manual has a small section in the commentary addressing pad eye design (structural steel only). OSHA also specifies the minimum factor of safety for certain conditions with connections carrying people, etc... Hope this helps.
  9. RMunoz1361

    Deep Concrete Tank Wall Design for Shear

    Some of underground concrete structures are controled in the design by uplift (floating) if ground water is an issue. And thick walls and slabs may be needed.
  10. RMunoz1361

    RC Slab Supporting VR Pump.

    Hey, 1. You should treat the thrust load as an impact load and increase the load similar to designing a crane rail system. (Minimum of 25%) 2. The deflection of the system should meet the limits set forth in ASCE, IBC and especially ACI 350. ACI 350-89 is the concrete design for...
  11. RMunoz1361

    Old I-Beam Properties

    Have you tried the AISC database for historic shapes? You can download it from the web page.
  12. RMunoz1361

    beam deflection question

    You should not deviate from the deflection limit criteria for a load bearing header. It sounds like you can easily see the beam before you entire a room and if the span is not long enough people will notice it as an issue. Options: 1. Use a flitch beam comprised of (2)-LVL’s on the exterior...

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