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Project data & BIM
About BIM-based management of attributes, schedules, templates, favorites, hotlinks, projects in general, quality assurance, etc.

Cost Calculation Schedule

awhiteGAEA
Participant

Hi everyone,

 

I'm trying to create a schedule that will calculate costs based on the square footage of building materials used. I want a set cost assigned to each material * the area of each material = the cost per material. I cannot figure out what the issue with my schedule is that's causing it not to work. For simplicity, I assigned gypsum board a value of $1/S.F. until i get everything figured out. Everything is classified properly, and my properties are set to be available for all classifications. There are no error messages in the expression. I've tried changing the variable types to no avail. Please help 😞 See screenshots below - 

awhiteGAEA_0-1746733114707.png

awhiteGAEA_1-1746733130830.png

awhiteGAEA_2-1746733150452.png

awhiteGAEA_3-1746733173438.png

 

 

Operating system used: Windows

3 REPLIES 3
Ricardo Lopez
Expert

Hi @awhiteGAEA 

 

Try to change Data type for Cost per S.F. to number instead of string so you don't need to convert it. 

Check this: https://help.graphisoft.com/AC/28/INT/index.htm?rhcsh=1&rhnewwnd=0&rhmapid=#t=_AC28_Help%2F045_Prope...

Note: Expressions cannot be evaluated for properties assigned to Building Materials.

 

 

Regards.

M. Arch. Ricardo López
BIM Consultant | Project Solutions and Services | Panama
AC17-28 SPA+INT | Windows 11 | MSI CreatorPro M16 HX C14VJG, 64GB, Nvidia Quadro RTX 2000 Ada Generation
Ahmed_K
Mentor

I guess you're usei g component schedule for quantity takeoff,  in this case, propreties based on formulas won't work for you, 

 

AMD Ryzen 9 3900X, 32 GB RAM, RTX 3080 10 GB
Archicad 27
Windows 11 professional
https://www.behance.net/Nuance-Architects
Pedro Melo
Enthusiast

Do you want to use building material quantities or the composite quantities (gypsum board vs gypsum wall)?
I've been using this properties for QTO of composites (check the screenshots). But I use element based schedules.

Have you tried working with macros on excel? Maybe it would be easier to achieve the result you're looking for.


Amounts-1.png

 

Amounts-2.png

 

Amounts-3.png

 

Amounts-4.png

 

Amounts-5.png

 

Amounts-6.png

Setup info provided by author