topic Set Ceiling width value in Revit API Forum

Set Ceiling width value

miguelBW5DE — Tue, 18 Oct 2022 21:41:45 GMT

Greetings from perú!

For this opportunity, I'm looking to change the ceiling thickness:

so far I've managed to get the width value but I still confused about the appropriate syntax to change the width value:

List<HostObjAttributes> ceilings = new FilteredElementCollector(doc).WhereElementIsElementType().OfCategory(BuiltInCategory.OST_Ceilings).Cast<HostObjAttributes>().Where(ceiling=>ceiling.GetCompoundStructure() != null).ToList(); foreach (HostObjAttributes ceiling in ceilings) { //stb.AppendLine(ceiling.Name); if (ceiling.Name =="Soffit Only Above Cabinets - H10\"") { IList<CompoundStructureLayer> layers = ceiling.GetCompoundStructure().GetLayers(); foreach (var layer in layers) { layer.Width = 3; } } }

After running the script, the ceiling thickness does not change. I would appreciate some help on this one. Thanks in advance.

Best regards,

Miguel G

Re: Set Ceiling width value

RPTHOMAS108 — Tue, 18 Oct 2022 21:59:13 GMT

Where there is a Get there is usually a Set.

The Get returns a detached copy which you need to return back with changes made, you have two 'Gets' there in the above.

So you have various 'Sets' also for your 3-foot-deep ceiling layer to take effect:

CompoundStructure.SetLayers
or perhaps
CompoundStructure.SetLayerWidth

then

HostObjAttributes.SetCompoundStructure

Re: Set Ceiling width value

miguelBW5DE — Tue, 18 Oct 2022 22:10:10 GMT

Hi Richard, nice to hear from you again. Thanks for your prompt reply. I even tried this syntax and do not work at all:

List<HostObjAttributes> ceilings = new FilteredElementCollector(doc).WhereElementIsElementType().OfCategory(BuiltInCategory.OST_Ceilings).Cast<HostObjAttributes>().Where(ceiling=>ceiling.GetCompoundStructure() != null).ToList(); foreach (HostObjAttributes ceiling in ceilings) { //stb.AppendLine(ceiling.Name); if (ceiling.Name =="Soffit Only Above Cabinets - H10\"") { CompoundStructure compStr = ceiling.GetCompoundStructure(); int indexCore = compStr.GetFirstCoreLayerIndex(); compStr.SetLayerWidth(indexCore,7); stb.AppendLine(indexCore.ToString()); } }

I will check out what you have suggested right now

Re: Set Ceiling width value

miguelBW5DE — Tue, 18 Oct 2022 22:15:16 GMT

Thank you Richard you are the boss! what I was missing in the last portion of code was " ceiling.SetCompoundStructure(compStr);"

All the best!

Miguel G.