Recent content by GeorgeTheCivilEngineer

i should think the plastic sheet fails before the frame or the house!

Load will go where it is stiffest. The vertical supports for the ridge beam are likely to be the stiffest part so i would expect the load to transfer via the ridge beam to the vertical end supports. However I'm not sure how your intersecting sloped LVLs will 'lock everything together' but I...

Early 1900 would be iron nails so they're as likely to have rotted through after 110 years. Can you not inspect the nails and/or the hole they came from? I assume you mean the modern code requirement but I don't believe there would be one for lath and plaster. Here we'd replace with...

I had drafted a longish reply but the save draft function hasn't worked! In short - yes arching action in the wall above is reasonable. If the joists are in good condition and mortared in then they shouldn't necessarily affect that, but prudent to allow for it. The load from the floor would be...

I think 'strut' is just a historical term rather than any literal compression meaning. https://www.screwfix.com/p/simpson-strong-tie-herringbone-joist-struts-480mm-25-pack/765TJ Getting the right tension might be a challenge using rolls of strapping.

I'd call that a herringbone strut, sometimes seen in timber floors (although a bit old fashioned now, still available to buy).

We don't have the same regulatory environment in the UK, so we don't have stamping. But I do have a somewhat similar relationship with a repeat client, I provide some engineering advice on discrete parts for many projects. Then occasionally they will drop a big project on my lap. What I have...

Roofs maketh the architect. Bad roof = bad architect and vice versa.

I can see the need for a footing but less so the pad!

You can do a very simple area assignment as a rough order of magnitude (essentially half the P7), but for detailed design because of the combination of columns and walls I would model this in a suitable structural design programme.

I long ago switched to using lowercase on my drawings. It is easier to read and less prone to misinterpretation. But before that, yes I would always use the correct case for units.

The pitch can introduce 15 to 25% extra dead load which can affect the long term deflection calculation. It's a simple calculation to do.

What clause is driving a max spacing of 60mm?

Need to be clear about what you want to do. Resist the force without damage, or resist the force but destruction of the bollard is acceptable. Generally, specifying a pre-designed and tested system is the easiest route out.

No... CBRs aren't suitable for this. They need to do a plate loading test. This is safety critical. Don't put your name to a kN/m^2 derived from a CBR.