@greenalleycat - same here. It's not the anchor itself. Pullout strength in concrete will be very less for cracked concrete. I thought it's more for the installation of anchors on suspended concrete member because of the formation of cracks due to bending.
@DaveAtkins - sorry, did you mean...
Hi,
Is it common to consider cracked concrete while designing post installed anchors for a portal frame supported on foundation edge beam ? or the cracked concept is generally for suspended concrete where flexural cracks occur ?
@greenalleycat & @Tomfh
Thanks for your input on this. Looks like everyone is on the same page that nobody knows why 1170 says midspan. I think its best to go with the H/300 for knee till the code revises. ;)
Thanks again.
Hi all,
Thank you for your explanation. I also agree with you that it could be a typo. Funny thing is its been referenced in these papers. For eg the one I shared. It says midspan.
Another thought is, the load case/combination mentioned in 1170 is only for wind sls. Not for seismic. So, does...
Hi all,
Thank you for sharing your thoughts.
There is another paper ( Link below )
https://repo.nzsee.org.nz/bitstream/handle/nzsee/2591/Liu.pdf?sequence=1&isAllowed=y
The second paragraph of section 5 says the height as different. The first few lines referring 1170 says the sls limit is...
Hi there,
Just trying to understand the deflection limit for residential portal frames designed in New Zealand. There is a 8mm or H/300 limit specified for specific bracing elements as per the P21 test paper by Branz.
Referring to 1170.0 serviceability limits, The in plane limit for plaster...
