[Vince]

Thanks @David Cutler !

That was the first live webinar that I’ve done and found it really fun – apart from the technical issues at the start!

[Vince]

Will replays of these be available on here after the actual live event? I have a feeling that Tuesday evening may be a bit tricky for me! 😅

[Vince]

@Doug I’m not 100% sure about this but here goes!

By the looks of it most of your shapes are circles so by using the change in height or the pitch, you can then work out the shape of the ellipse that is created on the angle.

With the two new radii you should be work out the perimeter of the new shape which can then be multiplied by the height.

You can test this with some sketch to scale shapes.

There are also a couple of ways of calculating the length in Excel depending on whether you have the height or pitch.

If you are only completing a wall to part of the perimeter then hopefully it is just a pro-rata calculation that needs doing.

Hopefully this works?????

It’s a bit hard to explain here so I’ve attached a couple of files.

Ellipse-Shapes-2023-02-10.pdf 34 KB PDF - Click to view

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Elipse-Calcs-2023-02-10.xlsx 10 KB Excel Spreadsheet - Click to view

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[Vince]

Hi @robgib0

With some of my custom tools I run into this issue and I’ve found the following adjustment seems to work – if the tool was set with a line width of 3 at 1:50 then it needs to be 1.50 at 1:100 and 0.75 at 1:200.

[Vince]

I’m glad you like that one @David Cutler !

I must admit that I got the idea from using a custom line set up on something else and getting very frustrated about how you had to change the line thickness depending on what scale you were working in.

However, I think that has resulted in something that will be extremely useful – it certainly will to me anyway.

I should have highlighted the fact that if you are working with standard offset dimensions for items such as verges, footpaths (sidewalks?), etc. then you can create these with the correct spacings and then save them to your toolchest.

[Vince]

Is this something for a Gantt chart @Doug in order so you can apply dates and critical paths as well?

[Vince]

Good questions @David Cutler ! My HP laptop is now over 7 years old so I’m think that I’m going to have to buy a new one sooner or later. I’m not sure what will need more power though – Revu or my spreadsheets! 😅

[Vince]

Hi @Roye

I’ve joined in a few sessions which were being hosted in the US but I’ve got an account set up on the US server as well as my UK one.

I’m not 100% sure but I don’t think my UK account will let me join a US session.

[Vince]

@David a few years ago we started a project that had gas dpc’s that were to be cut & placed in-situ. The went across the cavity wall and then dressed down 6″ of brickwork and then left with a lap across the floor for the gas membrane to be fixed to later on.

The rolls of dpc for the external walls were 700mm wide and those on the internal party walls were 900mm wide.

The ends of each length had to be cut in a particular way in order so when it was all folded and taped together, there were full overlaps. Internal and external corners had different cuts as did the ends of party walls, etc..

A 700mm wide roll that is approx 60′ long costs just under £200.

So, you can imagine that we didn’t want the guys on-site making mistakes – especially when the site consisted or nearly 500 houses.

My answer was to make some scale examples with paper in my office.

Once I got those to work I then went out to my garage and cut templates out of 3no 8’x4′ x 1/4″ sheets of ply. They were all numbered up with the order in which to do the cuts as well.

When I dropped the templates off to site I think some of the men thought I was a bit mad – they ended up being grateful in the end though!

[Vince]

I just about remember having to learn all sorts of calculations when I was at college @Doug – the one that sticks out was working out the surface area of the top of a cone that has been sliced at an angle.

But that was about 30 years ago so the actual details behind everything were forgotten a very long time ago!

One interesting job I remember doing with my dad was a circular oast house roof – for every three rafters in the bottom half there were only two in the top half.

[Vince]

Thanks @Liz

[Vince]

@David Cutler the example of the 900mm path offset works rather well as what you do when creating your line style is create your first line at +1 and the second line at +10.

For a 600mm path it would be +1 and +7.

So hopefully a 2′ wide path offset 4″ from a building would also be +1 and +7.

This of course means there are limits to what you can do in a single tool and sometimes two sets of markups may be necessary.

[Vince]

There’s a box??? 🤣

Thanks @lizlarsen !

[Vince]

I’ve registered with the same details on both.

[Vince]

@David Cutler as well as my Bluebeam and Excel issues, I also spent over an hour on the Dropbox help webchat yesterday as mine just stopped syncing!!!

No news from Microsoft about the Excel fix yet either.

JUst hoping nothing else goes wrong now!