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  1. ataman

    Design of Rectangular Plates

    Thank you very much everyone particularly wannabeEIT and Prex.
  2. ataman

    Design of Rectangular Plates

    StructuralEIT No we don't have a copy of Roark.
  3. ataman

    Design of Rectangular Plates

    Hi, I'm designing a wall for a tank and would like to know if anyone has a copy of "Moments and Reactions for Rectangular Plates" from the Bureau Reclamation. The relevant sheet would be the one with the triagular distributed load. Much appreciated.
  4. ataman

    Concrete Water Tank

    Hi, I need to get some reference material quickly on the design of water retaining structures. I'm designing a small water tank. Can anyone direct me to online sources? ACI 350 or any publications etc. More specifically, are there limitations for crack widths by limiting reinforcing spacing...
  5. ataman

    Welding Rebar

    Hi, A contractor damaged a r/c retaining wall and had to have to wall demolished and repaired. In order to save time he cut the rebard but cut it about 1 foot above the footing and as such the required lap lenghts can no longer be satisfied. I've already checked As provided versus As required...
  6. ataman

    Topo Survey

    thanks for the responses. Most persons have responded that closer contours would be recommended. If I use the spot heights given by the surveyor, I can generate a topo to any precision. I appreciate the comment about getting the heights at the top and bottom of slopes but with land that has...
  7. ataman

    Topo Survey

    Hi, I have a surveyor who is doing a topographic survey of about 200 acres of land. The land is not flat and has several undulations. The surveyor has generated a topographic map with 1m contour survey using a grid of spot heights of at 10-15 meter spacings. My question is whether this...
  8. ataman

    Soil Compaction

    Thanks The site has already been filled and no tests were taken. Civilperson....are you saying that you can't excavate and then test? If a fill has been compacted to spec...say 95% modified proctor and then exposed to rain, can this impact the compaction test results? If so, then it leads...
  9. ataman

    Soil Compaction

    Hi Just a few questions on compaction. Is there any correlation between Impact Value (determined by site testing using a Clegg Hammer) and Density? What are the methods used to determine whether compaction has attained 95% or 100% modified density. What is the best way of determining if the...
  10. ataman

    Timber Bridge Lateral Bracing

    Hi Gwynn, Why can't I use 1x6 T&G planks as a diaphragm. What's the difference between that at plywood other than the spacing of the joints (ie every four or 8 feet for plywood and every 6" for the decking) For the load to transfer across the joints I've always looked at it as the load getting...
  11. ataman

    Timber Bridge Lateral Bracing

    Hi Gwynn, Why can't I use 1x6 T&G planks as a diaphragm. What's the difference between that at plywood other than the spacing of the joints (ie every four or 8 feet for plywood and every 6" for the decking) For the load to transfer across the joints I've always looked at it as the load getting...
  12. ataman

    Timber Bridge Lateral Bracing

    The bridge is about 10 feet off the ground. I've designed it pretty stiff and left a 1/2" gap at the end. I'm hoping that I don't have to put in any bracing but to use the timber deck as a diaphragm. Worse case scenario, I'm thinking off adding angles on each side of the bridge at the structure...
  13. ataman

    Timber Bridge Lateral Bracing

    Hi, I have a short timber bridge which is 10'0" long x 8'-0" wide. The architect wants a concrete abutment at one end and diagonal braces from the bottom of the concrete abutment to support the other end of the bridge. We would like to keep the bridge independent from the existing structure...
  14. ataman

    Canopy Tension

    Hi I'm working with an architect who wants to design a canopy over a pool deck to provide shade. The canopy which will be made out of a canvas type material will span about 13m between steel poles which will act a support. The canopy will have a slight slope to allow water to sheet off but we...
  15. ataman

    CMU wall behavior as a deep beam

    Why don't you use a steel beam? I don't know your tributary areas but the 27 foot span supporting 2 storeys may be a bit much especially when you consider deflection. Can you possibly have a steel beam at each level and use the masonry units as block in fill or since it is no longer load bearing...
  16. ataman

    Anchorage to face of CMU wall

    I don't see why not. You just need to check the failure cone for the bond beam due to the applied shear. Once the load gets into the bond beam / block masonry, the load path to the foundation is the same as if you had achor bolts in tension.
  17. ataman

    Maximum Slenderness Ratio

    Hi, Does anybody use, as a rule of thumb, a maximum slenderness ratio for concrete columns even though structurally a slender column can work? Thanks
  18. ataman

    Concrete Frame with Masonry Block Infill

    Thanks Ron, I do, and I'm sure the architect will share the concern about the waterproofing and cracking issues with the use of the wall restraints. Ataman
  19. ataman

    Concrete Frame with Masonry Block Infill

    Hi, I have a three storey structure with the primary load resisting system being a reinforced concrete frame. I do have masonry infill and herein lies the question. At exterior wall locations, how do I detail the masonry wall connection to the R/C beams such that it can transfer wind loads to...
  20. ataman

    Piling Tolerances

    Hi, Would just like to get some feedback on the plumbness tolerances that are generally accepted for driven piles. Thanks.

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