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  • Users: PowerRanger
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  1. PowerRanger

    Deflection improvement For the Existing Shed

    Thanks Guys Hi Ussuri, the second moment of area of my UB is 86.4X10^6 mm^4. If you consider the span between haunch, it will be only 14m, which will give a 45 span to depth ratio. Hi Tomfh, Zambo, Jacking the rafter up and re-treat the bolting splice can help, but need to jack up not just...
  2. PowerRanger

    Deflection improvement For the Existing Shed

    Hi Fellows A urgent question. I designed a factory shed last year, and they are building it now. The rafter is 310UB slope from one end to another, span 20m, with 3m haunch both end. The column is 360UB, high 3.6m at on end, and 5.2m at the other. The rafter rigid connected to the column. There...
  3. PowerRanger

    Just one bolt?

    I designed a portal frame supermarket two years before when I just graduated, at that time, I found one bolt in shear is strong enough to take the bracing force (wall and roof bracing), and I showed only one bolt in my plans, later, an architect review my plans and told me that 2 bolts is more...
  4. PowerRanger

    Abutment design

    Hi Fellows I am designing a not spill - through abutment (which means also act as the retaining wall). And I am finding difficulty to find out when is the maximum over turning moment happen, I means at which point under M1600 (AS5100). What I means is when the load is moving, part of the load...
  5. PowerRanger

    Site Inspection checklist

    Hi Fellows I am a new engineer, and going to design two bridges (precast decking and abutment) over two creeks, the bridge may be only one span, or two spans. And I am going to do the site inspection later. Could anyone tell me if there are anything I need to be aware on the site, or any...
  6. PowerRanger

    creep and shrinkage at crack section

    Hi Fellows Thank you for the reply. Yes, my beam is partially prestressed, and it will have the flexural crack under full traffic loading. What I really want to know is that, before the beam crack, we know the end displacement is = strain * length of the member, but after the beam crack, at the...
  7. PowerRanger

    creep and shrinkage at crack section

    Hi Fellows I am designing the bearing pad support the bridge beam. And I have a question about the creep and shrinkage displacement at the bottom of the beam. My case is, the prestress beam I designed is allow the cracking under the full loading, and my question is after the beam cracked at...
  8. PowerRanger

    creep and shrinkage at crack section

    Hi Fellows I am designing the bearing pad support the bridge beam. And I have a question about the creep and shrinkage displacement at the bottom of the beam. My case is, the prestress beam I designed is allow the cracking under the full loading, and my question is after the beam cracked at...
  9. PowerRanger

    Flexural cracking member

    Hi Rapt In my situation, the creep by prestress at the bottom of the beam is at the same way as the shrinkage before the section crack under the dead load itself.(member hog at this time, bottom stress act compressive, so the strain is toward each other at the support). After traffic loading...
  10. PowerRanger

    Flexural cracking member

    Hi Fellows I am disigning the bearing pad support the bridge beam. And I have a question about the creep and shrinkage displacement at the bottom of the beam. My case is, the prestress beam I designed is allow the cracking under the full loading, and my question is after the beam cracked at...
  11. PowerRanger

    Shear Reinforcement

    Hi Fellows This seems a silly question. I remember one times I read a book talk about the stirrup, stirrup not just use for shear reinforcement, also use for holding the compressive and tensile Reo. in position when bending (resist the compressive Reo buckle outside). And this is why the...
  12. PowerRanger

    Software program for AS 4600

    That is cool, Unforturnately I don't have the Space Gass here, I am waiting for the ColdSteel. But GoldSteel only can solve single member, not for whole truss. So I need to use Microstran to find out all the reaction. Does any one know if there is a function in Microstran that I can easily find...
  13. PowerRanger

    Software program for AS 4600

    I talked to Microstran, and they don't have this module, and the information of ColdSteel is what they passed to me.
  14. PowerRanger

    Software program for AS 4600

    Hi Fellows I am looking for the program to design the cold-formed steel structures according to the AS 4600. I know Sydney U is providing the program ColdSteel/4600. But it only consider one single member, but I want to input the whole Lysaght C & Z sections welded to make a truss and the...
  15. PowerRanger

    Steel Plate design

    Hi Fellows I have a problem about the steel plate design. Following is my case. I am designing a panel wall system to resist the flood water. The panel(5m length) is bolted to the steel plate at both vertical edge. And the steel plate is weld to the composite pile. So what principal I should...
  16. PowerRanger

    Rigidity of Steel Column Base Plate

    Hi Fellows I am designing one of this connection now. Just have a question about the capacity of concrete in foundation resisting pull out. Should I only consider the concrete resisting the cone shear failure, or could I consider the tension force transfer to the Reo. bars in pile. (Bars lapped...
  17. PowerRanger

    Slab Design for pump station

    Thanks PEStructural. Design By hand.
  18. PowerRanger

    Slab Design for pump station

    Hi Fellows I am designing a slab for a pump station. I am considering the anchor depth and the vibration effect when the pump is operating. I talked with the pump manufacturer, but not much help from them. I would like to ask how should I deal with the vibration problem in concrete (Say...
  19. PowerRanger

    Earthquake design load

    Hi Fellows When should we consider the earthquake load design. From section 2 of the standard, it say not all structures are required to designed for earthquake load. So, is it depend on the size of the build or the location of the building. Any detail specification? Thank you.
  20. PowerRanger

    CCAA - Guide to Tilt-Up Design

    Hi Fellows A question about the panel bearing. From page 30, it said the panel should be supported at one level by two (no more, no less) seatings in direct beating. But in page 10, the Figure 3 showed 3 piers support the panel. Did I miss understand something? Also, do any one know any good...

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