Materials List Revisited

[Glenn Woodward]

Edward,

I am looking at your video now and you are making mistakes re the mono slab.
The slab sits directly on top of the footing so that from top of slab to bottom of footing is 550mm (100mm slab + 450mm footing).
You are assuming that the bottom of the brick ledge is the top of footing - it is not - top of footing is a bottom of slab.
So yes, if you want the top of footing to be bottom of brick ledge, you need to set it up that way by making your footing 522mm high.
This is not a workaround - this is how Chief works.
You also claim that the chamfer doesn't work - as far as I can tell, it works as designed, I think you are using it incorrectly - it is possible to use both chamfer hight and with correctly.
The Chamfer is not used to locate the footing or any other part of the mono slab, it is used as a triangular infill only.
This is not a workaround - this is how Chief works.

Further because you are detailing a mono slab (all poured at once, but admittedly all lumped under 100mm slab), the cubic meters of concrete is reporting spot on for the slab + footing + chamfer - brick ledge:
slab = 2.5
+ footings = 2.9295
+ chamfer = .086
- brick ledge = .4681 (approx)
Total = 5.0474

Your ML is reporting 5.05 cu m
I would say that is close enough.

I agree that mesh needs to have the brick ledge deducted to be really accurate - but on a large project, the difference would be negligable.

This is just my first quick reaction while looking at your video - I am not trying to be negative as I think this is all good stuff.
I believe the ML needs work and you are doing a great job with your posts and video.
But if information is being posted, it needs to be correct.

I will have a closer look at your vid tomorrow.

PS. I don't think the wall insulation is coming from the Gap material.
I think it is coming from the internal brick skin (main layer) and Chief assumes that the main layer is a framed layer and therefore needs insulation.

[Ed_Downunder]

Hi Glen,

Really appreciate you taking the trouble to look at this issue.

I have just looked at a recent plan back from the engineer. This plan has a 300mm x 350mm footing.

The brick ledge is 2 courses of standard brick. that is 172. We are using vericore 305 x 90 x 162.

It seems when the engineer wants 300mm footing he wants the thickened edge to sit on top of the footing.

I get that chief wants to have the slab sit on top of the footing but is it right?

[dshall]

I have commented on this before..... If CA defined a mono slab and footing being made up of three parts, this would solve my issues, Joe Carricks issues and Ed's issue. Those three parts are a concrete slab. (Usually 4" thick), sitting on a stem wall (6"-8" wide and approx. 14" tall) sitting on a footing (12"-15" wide and 6"-10" thick). Understand this is a mono pour. If the mono slab and footing were defined by these three components, it would enable us to build the footing using the minimum required sizes. I have a feeling I am singing into the wind.

[Glenn Woodward]

Hi Glen,

Really appreciate you taking the trouble to look at this issue.

I have just looked at a recent plan back from the engineer. This plan has a 300mm x 350mm footing.

The brick ledge is 2 courses of standard brick. that is 172. We are using vericore 305 x 90 x 162.

It seems when the engineer wants 300mm footing he wants the thickened edge to sit on top of the footing.

I get that chief wants to have the slab sit on top of the footing but is it right?

Ed,
What you indicate is not a momolithic slab.
A monolithic slab, by definition, is done in one pour.
That is why Chief reports only 1 quantity for a mono slab..

To get what you want (OK,OK - close to what you want), you need to use walls with footings.
This way, you can get your separate footing, stem wall and slab.
The 72mm high stem wall would be made up of a concrete inner skin and brick outer skin.
The brick skin for the wall above will only come down to the bottom of slab.

This is far from perfect and you can't get the chamfer.
This is an area of Chief that definitely needs some work.

[Ed_Downunder]

Ed,
What you indicate is not a monolithic slab.
A monolithic slab, by definition, is done in one pour.
That is why Chief reports only 1 quantity for a mono slab..

To get what you want (OK,OK - close to what you want), you need to use walls with footings.
This way, you can get your separate footing, stem wall and slab.
The 72mm high stem wall would be made up of a concrete inner skin and brick outer skin.
The brick skin for the wall above will only come down to the bottom of slab.

This is far from perfect and you can't get the chamfer.
This is an area of Chief that definitely needs some work.

It's a two headed beast. I would like the footing to draw correctly and I would like the materials list to report correctly.



I have managed to draw it correctly





The materials list is another thing!! The slab is reported as TRIM concrete cubic meters is OK. I have no Idea what 25mm solid concrete is. I looked for it. Must be something I added by mistake in elevation view so ignore that.

To put an edge beam on a single level house is easy with the make room polyline copy, concentric jump convert to slab. make hole in slab and set elevation at -200.

My current project has 3 levels slab on ground. That is a bit more complicated for this method

On a new plan I have a 5 x 5 slab and a 5 x 5 slab with footing. It's extraordinary! The slab tool reports as Exterior trim and the slab with footing tool report as foundation slab and foundation footing with separate calculations

The foundation slab reports 2.5 cubic meters and the footing 2.46 cubic meters.