Recent content by Fynch

I see. I had a large flood gate where the plate was s275 and beams/columns s355. And other than weldability I didn't know why the designer chose to use 2 different types

Does biaxial loading or column / beam automatically lead to torsion and hence torsional buckling?

If S355 is stronger than S275 - why would you use S275? I may be wrong but I can't see much difference in price.

Why would you have transverse ribs between 2 lateral beams when the deflection is lateral? Thinking about a bridge deck that is

I believe I should have explained where I saw this design. It's a flood defence structure whereby the steel gate leaf is connected to a vertical post and vertical post connected to the foundation. But the steel post is filled with concrete. Could this be for lateral torsional buckling? Or to...

Thank you. Just to confirm the only axial loading is the self weight. The diag force is lateral

If I have a force going into a hinge and hinge into a cantilever column at an angle - will it cause torsional buckling? Other than shear and bending I'm wondering if I should also account for torsion also. I've sketched out the structure in the attached. There are 2 hinges and they're connected...

Hello, Obviously steel rebar within concrete has its benefits and uses. But when or why would you choose to use a box or c shape steel section and fill it with concrete?

Hello, I have a miter gate which will act in cantilever .. but I'm confused about the forces acting on the gate and the likely modes of failure. The geotechnical failure modes make sense. But with the gates hanging at an angle to the supports - are they like to experience torsion/buckling...

Thank you everyone.... Some things to have a think about!

Okay interesting. But when about the Cemex Vurtua range using a geopolymer binder? What are thoughts on this? Or Cemfree using GGBS? Could additives increase curing times?

I'm looking to reduce CO2 in my concrete however I need a concrete that achieves its strength fast. I've been looking at fly ash, cemfree and Cemex Vurtua however, they all appear to have slower curing times. Am I missing something? Is there any concretes that are lower CO2 but will achieve a...

Hello, I'm very new to retaining sheet pile walls. I'm assuming that if a pile refuses or bridged over a utility for example that the force is shared between the longer piles on either side? Or is this not exactly the case? If it is the case, if they're not strong enough to take the additional...

Also -if it's silty clay - how can there be no cohesion as the GI states?

Ah I see... would you say 3 x 10-7 is low permeability? I placed this clay layer as a boundary for seepage