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Calculation: Surface Area of the Wall Outside Face (Net)

ISA2428
Booster

I want to create a schedule that picks up the Net Surface Area of the Outside Face of a wall. The problem I'm having is the area calculation works for a single skin wall however as soon as the composite has 2 or more skins the calculation considers each skin as another wall. For example, a 2m x 3m wall with 4 skins is showing as 24sqm instead of 6sqm. I've attached a demonstration. Has anyone else had this issue? Or have I selected the wrong thing somewhere? 

 

AREAS-Plan set up.png

 

AREAS-Schedule set up.png

  

1 ACCEPTED SOLUTION
5 REPLIES 5
Barry Kelly
Moderator

I am not seeing this, no matter if I try an element, component or surface schedule.

But your 3 layers need to be encased in brackets, as the criteria makes no sense as you currently have it.

You need that group of layers to act a one criteria.

 

(layer 1 OR layer 2 OR layer 3)

 

Otherwise make sure you do not accidentally have 3 walls in the same position and your schedule is set to 'Merge Items'.

 

Barry.

One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
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ISA2428
Booster

The result of the 24sqm vs the correct 6sqm is to do with the Layer criteria. When I delete Layer it solves it. 

I'll play with some other options and see if it makes any difference. I'm sure there is a logical reason for the Layer Criteria to be affecting the result.

 

Calc-no layer.png

 

Calc-with Layer.png

 

ISA2428
Booster

By the way, thanks for responding! It prompted me to try something different.

Solution

I am not sure exactly why this would make a difference, but it is because you have made a 'component' schedule.

That will be looking for the pieces (or skins) of the wall - the components (but I don't understand how having no layer in the criteria makes a difference).

Do the same with an 'element' schedule, and it will look at the entire wall as one element.

You can then use the layers in the criteria - but remember to group them.

 

Barry.

One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11
ISA2428
Booster

I realised earlier this arvo it was because the schedule had been duplicated from a component. As soon as I set it up in the element one I was sweet! I should've spotted that before 😬. Thanks for following up!

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