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  1. Just Some Nerd

    AS 2870 vs NCC

    This is the way I understood it here in NSW too. Not familiar with the section OP is asking about however, I mostly work on Class II projects
  2. Just Some Nerd

    Strut and Tie

    Ties can be in whatever direction you want to be I'd say. It's just a question of whether you're picking the strut & tie diagram to match how you want to detail, or picking the detailing to match how you want to draw the S&T diagram. If you draw a bar a different direction, so long as the forces...
  3. Just Some Nerd

    Trimmer bars for large slab openings

    The use of software can be pretty useful for situations like this, in being able to set up design strips on each side of the opening to examine the actual demands and reo requirements. Fairly easy to do in say RAM Concept for example
  4. Just Some Nerd

    Saw cutting a mesh-reinforced concrete surface bed?

    Standard here is pretty close to what jayrod has described. Slab thicknesses and spacing of saw-cut joints may very (usually more like 120 slabs with 4m spacings) but the rest of the process is the same From my experience, slabs sitting on the ground are notoriously crack-prone and you're...
  5. Just Some Nerd

    Are joist chords analyzed as continuous or pinned at panel points?

    Definitely gets a little annoying for me too when trying to analyse a 2D situation in 3D software and having to add restraints everywhere
  6. Just Some Nerd

    Residential renovations suck and are not worth the fees! {PROVE ME WRONG!}

    Missed the part where it said "renovation" on my first read and was a bit confused. I'm pretty biased given my line of work (new builds, resi/mixed use towers generally) but have always found that a job being smaller doesn't make it as quick as one would hope. Doing your due diligence on an...
  7. Just Some Nerd

    Tension Pile Detailing

    Pointing outward also seems a bit more convenient, don't get those annoying clashes between them all...
  8. Just Some Nerd

    Grouting top course of CMU wall with

    I can't for the life of me figure out why there's a beam at the top of this non-loadbearing wall. Ordinary masonry ties don't just work for restraining this?
  9. Just Some Nerd

    Post Installed Anchors Due to Anchor Misplacement

    Need something with a good capacity for bond stress, and I'd shoot for less than half of what they rate....can't trust the actual install to be as per their testing
  10. Just Some Nerd

    PT Pan Stressing Tendon Elongation

    Encounter this a lot, I have noticed that pans usually end up an extra 5mm or so shorter than expected when it comes to extensions compared to edge stressing. Elongations seem to be 50% black magic, 50% random nonsense. Personal experience has also taught me that many contractors here in Aus...
  11. Just Some Nerd

    Methods to check punching shear of loads close together

    I'd do a hand calc on the punching check. To be extra conservative consider treating a line mid-way between the two loads as an edge, so that the assumption is the perimeters stop where they meet instead of overlapping
  12. Just Some Nerd

    Wind turbine collapse in Victoria, Australia

    Are we reading the same article here? I don't see mention of any installation error, and it was the morning after a storm. This doesn't seem to relate much when it comes to failure under more intense wind conditions, would be more appropriate to examine the frequency/severity of stronger wind...
  13. Just Some Nerd

    Seeking Ideas for Impactful Structural Engineering Class Assignments

    Understanding how different materials, building shapes, connections, etc. affect seismic behaviour/loading is something that I feel is not well understood in my region (not surprising for those familiar with the Australian industry). Not sure what assessment you'd build around it though to be honest
  14. Just Some Nerd

    Fire Rating of Concrete Walls AS3600.2018

    A slab would work provided it's braced in that direction against lateral loads. Similarly any other flooring system may be able to do the job, e.g. a steel truss roof) but conceivably any system that restrains the top of the wall against lateral movement will work. Often yes, whatever is bracing...
  15. Just Some Nerd

    Calculate Normal Force

    There is none, everything is loaded axially in this example. There shouldn't be a shear diagram either
  16. Just Some Nerd

    Calculate Normal Force

    Greg, I'm assuming you're not particularly familiar with the symbols, but the number of wheels isn't generally indicative of two reactions. The question specifies one reaction Fx, there is no reason to believe it's multiple reactions. If the intent of the question was that there are two supports...
  17. Just Some Nerd

    Calculate Normal Force

    The original diagram shows a single reaction at the roller, no moment reactions anywhere. If it was two separate wheels, there would be two separate reactions. The slight deviation from diagrammatic convention shouldn't be tripping us up this badly just because they used a line instead of a...
  18. Just Some Nerd

    Minimum width of closed tie fitment

    Check out Infrabuild's product guide for reinforcing, has all the typical minimum widths for reinforcing bar, look at page 39 for reference. The dimensions given are subject to both a) the as3600 requirements for bends as well as b) any minimums imposed by the physical limitations of processing...
  19. Just Some Nerd

    California Dreaming No More

    Can you all at least *pretend* to make this thread engineering related?
  20. Just Some Nerd

    Being asked to sign a non-disclosure agreement before quoting

    If this agreement is just to quote the design then that actually seems quite odd to have in at this stage. Did they just copy-paste?

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