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Many structural engineers I talked to are only familiar with welded wide flange splice connections. They almost never did bolted connections on the splice. So I'd like to hear from those who have worked on this. This is the wide flange sample (w8x21) to be spliced.. it has 10mm top and down...

The wall installer will install cladding and they need to weld two purlins together. Both has thickness of 1.8mm (5/64" or 0.70"), they plan to use the welding electrode 6011.. but I'm worried its deep penetration may melt the purlins. I need to know some tips. In such thickness. Do you use 6013...

When you weld two wide flange together by cutting them square... would it make sense to further strengthen the web by putting cover plates over the web? Or over the flange?The purpose of flange is for tension and compression.. the web is supposed to be only for shear? Which to focus more in...

https://en.wikipedia.org/wiki/Cement_board How many have experienced using such boards? how's the long term performance? Are these weatherproof?

For a C-purlin of thickness 1.8mm.. is it advisable to connect a closed box (where two C-purlins are welded into one box or tube) and framing one on the body of another (such as secondary beam on another beam)? Is it stable with only 1.8mm thickness? What is the consensus in other area. Worry is...

I let Sika recommended installer put non-shrink grout under the 10mm gap base plate. They sealed the formworks and put hose into it and pumped the grout using a large floor based cement pump. They know it's full when every side overflows as seen from above. Sika 215 is required since this is...

I have unsuccessfully applied non-shrink grout to a 10mm gap under the base plate. We put water on the pail and put the grout.. we stirred them until they were flowable consistency.. then we poured it on the form works inlet (with outlets for air to go out) around the base plate. As we poured...

1. Sika 212 non-shrink grout were poured under the base plates with shims at the sides supporting the plates. The shims were small strips cut from flat bar.. Would you think the sika 212 can take the load away from the shims? 2. 12 hours after the grout is put.. what is your estimate of the...