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Recent content by CRQUT

  1. CRQUT

    Masonry block buildings >15m high

    Hi All, Just curious as to what others are designing for in terms of a mu value for block buildings? I had a certifier query a design for a building that was 5 levels but >15m and used block everywhere (including shear walls and cores). He said other engineers (in Brisbane) had told him that...
  2. CRQUT

    Vinyl sheetpile over existing concrete seawall

    Im no expert but depending on the height of the wet concrete wouldnt this be a higher load than saturated soil? Also if its a seawall, does it natter if it deflects as long as the vinyl sheetpile doesnt yield?
  3. CRQUT

    Small Gap Between SOG and Footing

    Just thicken the slab over the footing. If its going to crack, itd be around the column, which should be either isolated or in a pocket detail. Ask the contractor if the steel will turn up on site before the slabs poured, this could dictate a pocket in any case. Unsure if you need trimmer bars...
  4. CRQUT

    Site Welded Connection - Flanges Only, No Web Connection

    Looks to me like they dont know what they are doing. A decent steel erector/fabricator would know thats not standard. It would be a red flag for other parts of the project they have worked on in my book.
  5. CRQUT

    Max Spacing of vertical bars in walls

    Thanks Rapt for reply, if that is the intent then any chance the long awaited, highly anticipated commentary could clarify? RSCASSAR - I agree but the templates for the starter bars would no doubt clash with the internal ribs of a permanent formwork system at some point. Which means more crane...
  6. CRQUT

    Max Spacing of vertical bars in walls

    Hi all, Curious to get opinions on the attached for max spacing of vertical bars, specifically clause AS3600 cl.11.7.3. and the 350mm requirement. If the bars are staggered as per attached then max spacing between vertical 'parallel' bars is around 240 if they are spaced @ 400 on each face and...
  7. CRQUT

    Multi Storey masonry design under EQ load

    Hi, For multistorey buildings I was taught to design the cores and nominated shear walls (if needed in addition to the core/s) to take the lateral EQ load. This approach is no longer valid. There is plenty of threads on here to explain why (special shout out to Rapt for his input to those and...
  8. CRQUT

    AS3600 cl17.2.5 Tie Wire vs Cable ties

    Hi, Im interested to get peoples thoughts on using cable ties in lieu of tie wire for securing ligs in the boundary elements of concrete walls. Clause 17.2.5 states "tie wires shall be used..." Does anyone know why the code is so restrictive (shall not should..) for using tie wire given...
  9. CRQUT

    Historic Welding Grades

    Hi, I am hoping someone has a copy or access to SAA Int. 352 code. This code was one of the predecessors to AS1551. We are doing an assessment of an existing structure and require the weld electrode strength. If anyone can assist that would be great. Regards, CRQUT
  10. CRQUT

    Tilt Panels - Australian Fire Reg's and Ply Roof Diaphragm

    Do a search for fire ties, then provide a braced steel framed roof. I personally wouldn’t rely on timber ply to offer lateral support to concrete precast walls. What if you get a leak in the roof and it rots out?
  11. CRQUT

    Safety Mesh for concrete slabs/beams etc

    Hi, Does anyone know if the requirement for safety mesh is codified or where to find references for it? I am referring to the mesh contractors/builders put down for beams/slabs over 300mm thick to stop workers falling through. Thanks in advance for any replies. Regards CRQUT
  12. CRQUT

    AS 5100 Live Load Distribution

    Just a thought Shz713 but have you tried approaching TMR directly and asking for a copy of some bridge design calculations? If you ran it through your thesis supervisor, they might have a contact. Alternatively, if you have a set of drawings detailing size and span of the members and...
  13. CRQUT

    What Terrain Category?

    Exactly my thoughts rowingengineer.
  14. CRQUT

    What Terrain Category?

    Can the engineering community help us resolve a fairly simple question? The attached pic is for a site in region A4, Victoria. Its for a 10m high circular tank with a 3.5m diameter. If you were designing it what terrain category would you take as a rule of thumb if using an Md = 1.0 ie not...
  15. CRQUT

    Steel pin grades australia

    Hi all, Does anyone have any information regarding steel pin grades, the type used in lifting equipment. Thanks in advance CRQUT

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