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  1. Retrograde

    AS 2870 vs NCC

    I'm no lawyer, but my understanding is that in Queensland, the NCC is legally binding because it is referenced in and given effect by the Building Act 1975 and the Plumbing and Drainage Act. This is similar for other states and their legislation. The Australian Standards then have legal...
  2. Retrograde

    AS 2870 vs NCC

    I confess that I had no idea those tables are in the NCC. I have always just used AS 2870.
  3. Retrograde

    AS 2870 vs NCC

    What are the actual disrepancies? Which tables in particular are you talking about?
  4. Retrograde

    External anchorage of reinforcement - is this feasible?

    Why don't you just double up the top reinforcement in that zone. Half the bars have a cog to achieve development in the temporary case. Half the bars have a coupler attached so they can be joined to the reinforcment in the later pour.
  5. Retrograde

    Integrity Steel Interpretation

    The Australian Code has similar provisions and I have always taken it this way - counting the 2 shear planes for each bar.
  6. Retrograde

    Multi-storey steel column bracing

    That is probably how I would frame it out.
  7. Retrograde

    750 AUD per year for Engineer Australia membership. Is it a joke?

    I think the magazine is only every three months now.
  8. Retrograde

    Theoretical Question - Planar Truss Problem

    You are correct comhedoisl, symmetry does matter.
  9. Retrograde

    Site Measuring Joists - Web Thickness

    You can get ones that are significantly cheaper than $1500. I have seen some for under $200. Check out Amazon.
  10. Retrograde

    Site Measuring Joists - Web Thickness

    You can get ultrasonic thickness testers. My company has one and it works reasonably well. https://www.starrett.com/products/precision-measuring-tools/thickness-testers-and-accessories/thickness-testers
  11. Retrograde

    N-M interaction chart to Australian Standards

    Section 10.6.2 is the relevant part of AS3600.
  12. Retrograde

    Software for running concrete beams with holes

    See attached.
  13. Retrograde

    Should there be a dip in my N-M diagram or not - Eurocode - concrete columns

    I read some of your other topic but not in great detail. Is this correct? To me, the definition of "pure compression" is when the column is loaded through its centroid (i.e. zero moment).
  14. Retrograde

    Tension Pile Detailing

    I agree with EZB. Make the cap deep enough that the bars do not need to be hooked at all - if possible.
  15. Retrograde

    Fire Rating of Concrete Walls AS3600.2018

    I agree with Just Some Nerd that that particular clause in the code is meant to apply to industrial warehouse type buildings with tilt-up precast walls.
  16. Retrograde

    Plate washers for oversize/slotted holes

    Have you considered using OrbiPlate? https://reid.com.au/product/orbiplate
  17. Retrograde

    HAZ for welding headed stud to plate

    Why is that? I have been told by a competent welder that galvanizing doesn't need to be removed, similar to what Lex said above. What is different about stud gun welding?
  18. Retrograde

    Crane Anchoring to Building

    I think you will need to consider 8 load cases. The 375kN force acting up, down, left, and right. The torsion acting clockwise and counter-clockwise.
  19. Retrograde

    Soldier pile retaining wall deflection

    The deflection limit should reflect the specific situation. What I mean by that is that if there is a historic building close to the wall then you probably should aim for the 1" limit. Similar if there are services located in the ground adjacent to the wall. It it is just a backyard then maybe...
  20. Retrograde

    Ideastatica Load Transfer

    I would not do the steel bracing like that. Use stiffener plates.

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