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Recent content by jopalu

  1. jopalu

    Steel Deck: Sp & Sn = Sx?

    Refering to a Vulcraft Steel Roof and Floor Deck catalog/design guide, the section properties list values for "Sp" and "Sn". Are these values equivalent to the Section Modulus about the X-X axis? Please advise ...
  2. jopalu

    Precast Plank Cleavage Membrane

    When the floor finish is a cementitious tile, (i.e. ceramic, quarry, etc) a cleavage membrane, composed of a 0.7(+/-) mil poly, is recommended to separate the concrete topping from bondage to the structural precast plank. Thus, it is understood, that the concrete topping is no longer a...
  3. jopalu

    Development of Rebar

    ACI 318 Chapter 12 refers to Development and Splices of Reinforcement
  4. jopalu

    Development of Rebar

    What is the difference between development and embedment of rebar? Thank you!
  5. jopalu

    Minimum Reinforcement in Footings

    Why is there no apparent code requirement for minimum reinforcemnt in, specifically, continuous wall footings? Is there a requirement that I do not see? Please advise - Thank you!
  6. jopalu

    Aluminum

    Would anyone please provide me with the Fb, Fv and E values for ASTM B-221/429 Aluminum 6061-T6 or similar? I have Strength of Material books, but, I cannot find those design values. Thank you ...
  7. jopalu

    Expansion / Control Joints

    I don't see this as a structural issue, however, I was asked to inquire - Is there a code or personal standard used for distances and spacings of expansion or control joints in foundation walls, retaining / basement walls, where the inside face of the concrete wall is exposed to an occupied...
  8. jopalu

    Nailing Pattern

    UcfSE, Yes. Side-loaded - bearing only on one ply which is to be fastened to the others.
  9. jopalu

    Flitch Plate Design

    How do you transform one material to the other?
  10. jopalu

    Nailing Pattern

    UcfSE, I'm not familiar with the shear flow equation ...
  11. jopalu

    Nailing Pattern

    Can you direct me to a Nailing Pattern for SIDE-LOADED multi-ply wood (dimension lumber) beams? Thank you...
  12. jopalu

    Flitch Plate Design

    When designing a wood/steel section(beam) with flitch plate, is it reasonable to determine a "transformed" Allowable Bending Stress, Fb, by reason of propotionality? i.e. A 4-ply 2x12 SYP #1 (Fb=1,062 psi)(wet-service adjusted) w/1-ply A36 0.25x11 (Fb=21,600 psi) A(SYP)=67.5 si A(A36)=2.75 si...
  13. jopalu

    Rod x-braces & metal studs

    To (attempt to) prevent drywall cracking, use slip track / deflection track / double track ...
  14. jopalu

    Minimum bearing for hollow core precast plank

    Many things to consider. I have a design and engineering handbook from Spancrete, which shows "minimum" (not necessarily acceptable) bearing requirements. This manual shows 3.5" on masonry, 3" on embedded steel angle, 2.5" on steel beam, with 1" gap between abutted ends, you would need a 6"...
  15. jopalu

    Maximum Lengths for Sawn Lumber

    Contact a reputable general contractor that you are familiar with. Find out where they purchase lumber from. If it is a retail lumber outlet, find out what wholesaler they purchase from and call that wholesaler. Another thing to consider is how straight will a 22' length piece of lumber be...
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