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  • Users: Eldorado
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  1. Eldorado

    PTI Design of Post-Tensioned Slabs-on-Ground 4th edition RELEASE DATE

    I am trying to determine what edition of the PTI design guide for Slab-on-ground foundations was applicable in January 2013. I have the 3rd edition handy which was printed in 2004 and 2005, but I do not currently have access to the newer editions (other than the 6th). Thanks in advance for any...
  2. Eldorado

    Post-tension tendons cut before measuring

    I almost had a project (Slab on grade) that had post tension cable ends cut off before the elongations were measured. It turns out that it was someone elses project, but it made me ask myself how I would be able to verify stressing if there were no elongation data. No data is unacceptable, but I...
  3. Eldorado

    Importing CIS/2 files (.stp)

    I have a fabricator that is using SDS/2 for shop drawings. I'd like to take his model and import it into a design program such as STAAD, RISA3D, Ram Structural System (RSS) or similar program. Ram will export Step files, but won't import them. Has anyone imported Step files into design/analysis...
  4. Eldorado

    Light Gauge Rafter Supports (Residential)

    I typically do residential construction in wood, but have been asked to provide a light gauge steel roof framing design. Typically in wood construction, I use purlins as intermediate supports for rafters. Since I have dramatic span differences, I want to provide intermediate support for the...
  5. Eldorado

    UN-treated bottom plate

    I have been asked to look at a remodel project that includes wood framed load bearing walls (IBC 2012). The walls have been located and constructed over the existing vinyl tile that covers a conventional slab on ground foundation. The builder did not use pressure treated bottom plates and...
  6. Eldorado

    Reclaimed Timbers

    I have a client that wants to use reclaimed timbers as structural elements for a project (rustic exposed timber trusses). I told him that, in addition to visual classification of the components, I would need to have some testing done to verify the material. The project is relatively small and I...
  7. Eldorado

    two way flat plate with cables

    I have done two way slabs on low-rise buildings with conventional reinforcement (rebar), but I have not done these types of slabs with cables. What pitfalls are the most prevalent for post-tensioned slab construction.
  8. Eldorado

    Help with Dumb bell, Synco-Flex - Other Water Stop methods.

    The concrete lid on a prismatic underground water storage tank was cast without the added flexural and shear reinforcing I called for at the opening. If the deficient area of the lid is recast, I will have a new construction joint. I specify dumb bell water stop at joints typically, but they are...
  9. Eldorado

    U-Bolt rotational resistance

    I have been asked to design a solar panel support for two (2) to three (3) panels approximately 3'x5' each (see attached picture). The panel assembly is to be attached to a horizontal galvanized steel pipe with u-bolts. I am not comfortable with relying on the u-bolts alone to resist rotation of...
  10. Eldorado

    Wood Beam Roll Over - Residential Pier & Beam construction

    I typically stack wood floor joists on top of wood beams for residential floor constuction. At the perimeter of my beam layer, I typically have an edge beam perpendicular to my joist supporting beams in the same plane. I'd like to delete the perpendicular beam and just provide beams in one...
  11. Eldorado

    CIP Concrete Column Splice

    My typical concrete column detail shows the main bars for the "lower" level column with a sweep in them as they pass through the beam above and extending as dowels for the columns at the level above. I have a contractor that ordered straight bars that stop below the bottom of the beam. He wants...
  12. Eldorado

    Cantilever Column replacement

    I will be needing to specify a repair for a cantilever column that supports an awning. The concrete around the existing column has spawled. What options do you prefer for a flush mounted repair of this type. The columns are square tubes (carbon steel). I'm anticipating that my client will not...
  13. Eldorado

    Mat Foundation Concrete Placement

    I have a mat foundation with a 150'x80' footprint and 6' deep - Roughly 2670 CY of concrete. Are there additional placement requirements you would specify for the 6' deep mass of concrete?
  14. Eldorado

    Solid works to STAAD

    Let me preface by saying that I am unfamiliar with Solid Works. Is there a way to convert a solid works model into STAAD.
  15. Eldorado

    Stained Concrete Repairs (Slab on Grade)

    I wanted to get some input from the forum on experiences with repairing cracks in a concrete slab that has as stained concrete finish. I am intending to specify conventional epoxy repair with the epoxy vented at ports spaced along the crack. My concern is in getting a cementatious based surface...
  16. Eldorado

    Wood Framing - Ridge Beam Supports

    I am trying to figure out how much load I should design ridge beam supports for. Actually, I'm more concerned with the reaction of the ridge beam support on the next framing level below. For wood framed structures with standard rafters, ceiling joists and a ridge beam, our office supports the...
  17. Eldorado

    Curved Concrete beam tendencies

    Gentlemen, I am working on a round building with a circular perimeter beam (68' building diameter). I am concerned that if I specify curved reinforcing bars that the steel will want to "straighten out" under gravity loads. I have modeled the structure in STAAD using two (2) differing layouts...

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