diff --git a/Beam.ini b/Beam.ini
index a7ddf23..f296cf4 100644
--- a/Beam.ini
+++ b/Beam.ini
@@ -11,4 +11,5 @@ Button6=EnableFeatures.lua,Images\EnableFeatures.png,Abilita lavorazioni
 Button7=BeamMachinings,Images\BeamMachinings.png,Lista lavorazioni
 Button8=HideAll.lua,Images\HideAll.png,Nascondi tutte le travi non selezionate
 Button9=ShowAll.lua,Images\ShowAll.png,Visualizza tutte le travi
-Button10=ShowBuilding.lua,Images\ShowBuilding.png,Visualizza struttura/Visualizza pezzi 
+Button10=ShowSolid.lua,Images\ShowSolid.png,Visualizza/Nascondi solido
+Button11=ShowBuilding.lua,Images\ShowBuilding.png,Visualizza struttura/Visualizza pezzi
diff --git a/DisableFeatures.lua b/DisableFeatures.lua
index bf26326..d6d781e 100644
--- a/DisableFeatures.lua
+++ b/DisableFeatures.lua
@@ -1,4 +1,4 @@
--- DisableFeatures.lua by Egaltech s.r.l. 2018/04/25
+-- DisableFeatures.lua by Egaltech s.r.l. 2019/11/22
 -- Gestione disabilitazione delle feature selezionate
 
 -- Intestazioni
@@ -10,11 +10,15 @@ if EgtGetSelectedObjCount() == 0 then
    EgtOutBox( 'Nessuna lavorazione selezionata', 'Disabilita lavorazioni', 'ERROR')
 end
 
+-- Elenco dei pezzi interessati
+local vParts = {}
+
+-- Disabilito features selezionate
 local nId = EgtGetFirstSelectedObj() 
 while nId do
    -- verifico sia una feature
    local nParentId = EgtGetParent( nId)
-   if  EgtIsLayer( nParentId)  and  EgtGetName( nParentId) == 'Processings'  and
+   if  EgtIsLayer( nParentId or GDB_ID.NULL)  and  EgtGetName( nParentId) == 'Processings'  and
        EgtGetInfo( nId, 'GRP', 'i')  and  EgtGetInfo( nId, 'PRC', 'i')  then
       EgtSetInfo( nId, 'DO', 0)
       EgtSetColor( nId, Color3d( 160, 160, 160))
@@ -22,10 +26,22 @@ while nId do
       if nAuxId then
          EgtSetColor( nId + nAuxId, Color3d( 160, 160, 160))
       end
+      table.insert( vParts, EgtGetParent( nParentId))
    end
    nId = EgtGetNextSelectedObj()
 end
 
+-- Cancello eventuale solido dei pezzi interessati
+table.sort( vParts)
+local PrevPartId = GDB_ID.NULL
+for i = 1, #vParts do
+   if vParts[i] ~= PrevPartId then
+      local SolidLy = EgtGetFirstNameInGroup( vParts[i], 'Solid')
+      EgtErase( SolidLy or GDB_ID.NULL)
+      PrevPartId = vParts[i]
+   end
+end
+
 EgtDeselectAll() 
 EgtZoom( SCE_ZM.ALL)
 
diff --git a/EnableFeatures.lua b/EnableFeatures.lua
index e077e94..517c5d3 100644
--- a/EnableFeatures.lua
+++ b/EnableFeatures.lua
@@ -1,4 +1,4 @@
--- DisableFeatures.lua by Egaltech s.r.l. 2018/04/25
+-- DisableFeatures.lua by Egaltech s.r.l. 2019/11/22
 -- Gestione abilitazione delle feature selezionate
 
 -- Intestazioni
@@ -10,11 +10,15 @@ if EgtGetSelectedObjCount() == 0 then
    EgtOutBox( 'Nessuna lavorazione selezionata', 'Abilita lavorazioni', 'ERROR')
 end
 
+-- Elenco dei pezzi interessati
+local vParts = {}
+
+-- Abilito features selezionate
 local nId = EgtGetFirstSelectedObj() 
 while nId do
    -- verifico sia una feature
    local nParentId = EgtGetParent( nId)
-   if  EgtIsLayer( nParentId)  and  EgtGetName( nParentId) == 'Processings'  and
+   if  EgtIsLayer( nParentId or GDB_ID.NULL)  and  EgtGetName( nParentId) == 'Processings'  and
        EgtGetInfo( nId, 'GRP', 'i')  and  EgtGetInfo( nId, 'PRC', 'i')  then
       EgtRemoveInfo( nId, 'DO')
       EgtResetColor( nId)
@@ -22,10 +26,22 @@ while nId do
       if nAuxId then
          EgtResetColor( nId + nAuxId)
       end
+      table.insert( vParts, EgtGetParent( nParentId))
    end
    nId = EgtGetNextSelectedObj()
 end
 
+-- Cancello eventuale solido dei pezzi interessati
+table.sort( vParts)
+local PrevPartId = GDB_ID.NULL
+for i = 1, #vParts do
+   if vParts[i] ~= PrevPartId then
+      local SolidLy = EgtGetFirstNameInGroup( vParts[i], 'Solid')
+      EgtErase( SolidLy or GDB_ID.NULL)
+      PrevPartId = vParts[i]
+   end
+end
+
 EgtDeselectAll() 
 EgtZoom( SCE_ZM.ALL)
 
diff --git a/Images/ShowSolid.png b/Images/ShowSolid.png
new file mode 100644
index 0000000..383a95e
Binary files /dev/null and b/Images/ShowSolid.png differ
diff --git a/ShowSolid.lua b/ShowSolid.lua
new file mode 100644
index 0000000..2663b15
--- /dev/null
+++ b/ShowSolid.lua
@@ -0,0 +1,65 @@
+-- ShowSolid.lua by Egaltech s.r.l. 2019/11/22
+-- Gestione calcolo solido di una Trave
+
+require( 'EgtBase')
+_ENV = EgtProtectGlobal()
+EgtEnableDebug( false)
+
+-- Funzione per visualizzazione del solido o standard
+local function Show( PartId, bSolid)
+   local BoxLy = EgtGetFirstNameInGroup( PartId, 'Box')
+   EgtSetStatus( BoxLy or GDB_ID.NULL, EgtIf( bSolid, GDB_ST.OFF, GDB_ST.ON))
+   local OutlineLy = EgtGetFirstNameInGroup( PartId, 'Outline')
+   EgtSetStatus( OutlineLy or GDB_ID.NULL, EgtIf( bSolid, GDB_ST.OFF, GDB_ST.ON))
+   local ProcessingsLy = EgtGetFirstNameInGroup( PartId, 'Processings')
+   EgtSetStatus( ProcessingsLy or GDB_ID.NULL, EgtIf( bSolid, GDB_ST.OFF, GDB_ST.ON))
+   local SolidLy = EgtGetFirstNameInGroup( PartId, 'Solid')
+   EgtSetStatus( SolidLy or GDB_ID.NULL, EgtIf( bSolid, GDB_ST.ON, GDB_ST.OFF))
+end
+
+-- Recupero il pezzo del primo oggetto selezionato
+local ObjId = EgtGetFirstSelectedObj()
+local PartId = EgtGetParent( EgtGetParent( ObjId or GDB_ID.NULL) or GDB_ID.NULL)
+if not PartId or not EgtIsPart( PartId) then
+   EgtOutBox( 'Nessuna trave selezionata', 'Show Solid', 'ERROR')
+   return
+end
+EgtDeselectAll()
+
+-- Recupero il Box
+local BoxLy = EgtGetFirstNameInGroup( PartId, 'Box')
+local BoxId = EgtGetFirstNameInGroup( BoxLy or GDB_ID.NULL, 'Box')
+if not BoxId then
+   EgtOutBox( 'Trave senza Box', 'Show Solid', 'ERROR')
+   return
+end
+
+-- Verifico esistenza del solido
+local SolidLy = EgtGetFirstNameInGroup( PartId, 'Solid')
+if not SolidLy then
+   SolidLy = EgtGroup( PartId)
+   EgtSetName( SolidLy, 'Solid')
+end
+local SolidId = EgtGetFirstNameInGroup( SolidLy, 'Solid')
+if not SolidId then
+   SolidId = EgtCopyGlob( BoxId, SolidLy)
+   EgtSetName( SolidId, 'Solid')
+   EgtSetAlpha( SolidId, 100)
+   Show( PartId, true)
+else
+   Show( PartId, ( EgtGetStatus( SolidLy) == GDB_ST.OFF))
+   EgtDraw()
+   return
+end
+
+-- Ciclo sulle features
+local ProcLy = EgtGetFirstNameInGroup( PartId, 'Processings')
+local ProcId = EgtGetFirstInGroup( ProcLy)
+while ProcId do
+   if EgtGetInfo( ProcId, 'DO', 'i') ~= 0 and EgtGetType( ProcId) == GDB_TY.SRF_MESH  then
+      EgtSurfTmIntersect( SolidId, ProcId)
+   end
+   ProcId = EgtGetNext( ProcId)
+end
+
+EgtDraw()