diff --git a/EGkVolZmap.h b/EGkVolZmap.h
index 2398951..b6ed2f3 100644
--- a/EGkVolZmap.h
+++ b/EGkVolZmap.h
@@ -32,7 +32,9 @@ class __declspec( novtable) IVolZmap : public IGeoObj
       virtual bool CreateFromTriMesh( const ISurfTriMesh& Surf, double dPrec, bool bTriDex) = 0 ;
       virtual bool GetAllTriangles( TRIA3DLIST& lstTria) const = 0 ;
       virtual int  GetBlockCount( void) const = 0 ;
+      virtual bool GetVolume( double& dVol) const = 0 ;
       virtual int  GetPartCount( void) const = 0 ;
+      virtual bool GetPartVolume( int nPart, double& dVol) const = 0 ;
       virtual bool GetTriangles( bool bAllBlocks, INTVECTOR& nModifiedBlocks, TRIA3DLISTVECTOR& vLstTria) const ;
       virtual bool GetDexelLines( int nDir, int nPos1, int nPos2, POLYLINELIST& lstPL) const = 0 ;
       virtual bool SetTolerances( double dLinTol, double dAngTolDeg = 90) = 0 ;
@@ -47,6 +49,7 @@ class __declspec( novtable) IVolZmap : public IGeoObj
       virtual bool GetDepth( const Point3d& ptP, const Vector3d& vtDir, double& dInLength, double& dOutLength) const = 0 ;
       virtual bool AvoidBox( const Frame3d& frBox, const Vector3d& vtDiag) const = 0 ;
       virtual IVolZmap* ClonePart( int nPart) const = 0 ;
+      virtual bool RemovePart( int nPart) = 0 ;
 } ;
 
 //-----------------------------------------------------------------------------
diff --git a/EXeExecutor.h b/EXeExecutor.h
index 91d93e3..af1c307 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -263,6 +263,7 @@ EXE_EXPORT int  ExeCreateSurfTmByScrewing( int nParentId, int nCrvId,
 EXE_EXPORT int  ExeCreateSurfTmRuled( int nParentId, int nPtOrCrvId1, int nPtOrCrvId2, double dLinTol) ;
 EXE_EXPORT int  ExeCreateSurfTmByTriangles( int nParentId, const INTVECTOR& vIds, bool bErase) ;
 EXE_EXPORT int  ExeCreateSurfTmBySewing( int nParentId, const INTVECTOR& vIds, bool bErase) ;
+EXE_EXPORT int  ExeCreateSurfTmByVolZmap( int nParentId, int nZmapId, int nPart) ;
 
 // GeomDB Create Volume
 EXE_EXPORT int  ExeCreateVolZmap( int nParentId, const Point3d& ptIni, double dDimX,
@@ -470,6 +471,8 @@ EXE_EXPORT bool ExeCutSurfTm( int nId, const Point3d& ptOn, const Vector3d& vtN,
 
 // GeomDb Volume Modify
 EXE_EXPORT int  ExeExplodeVolume( int nId, int* pnCount) ;
+EXE_EXPORT int  ExeCopyVolZmapPart( int nId, int nPart, int nDestGrpId) ;
+EXE_EXPORT bool ExeRemoveVolZmapPart( int nId, int nPart) ;
 EXE_EXPORT bool ExeVolZmapSetStdTool( int nId, const std::string& sToolName, double dLen, double dDiam, double dCornR) ;
 EXE_EXPORT bool ExeVolZmapSetAdvTool( int nId, const std::string& sToolName,
                                       double dLen, double dDiam, double dTipLen, double dTipDiam, double dCornR) ;
@@ -520,6 +523,8 @@ EXE_EXPORT bool ExeArcAngCenter( int nId, double* pdAngDeg) ;
 EXE_EXPORT bool ExeArcDeltaN( int nId, double* pdDeltaN) ;
 EXE_EXPORT bool ExeArcNormVersor( int nId, int nRefId, Vector3d& vtNorm) ;
 EXE_EXPORT bool ExeCurveCompoCenter( int nId, int nSimpCrv, int nRefId, Point3d& ptCen) ;
+EXE_EXPORT bool ExeSurfArea( int nId, double& dArea) ;
+EXE_EXPORT bool ExeSurfVolume( int nId, double& dVol) ;
 EXE_EXPORT bool ExeSurfFrNormVersor( int nId, int nRefId, Vector3d& vtNorm) ;
 EXE_EXPORT int  ExeSurfFrChunkCount( int nId) ;
 EXE_EXPORT int  ExeSurfFrChunkSimpleClassify( int nId1, int nChunk1, int nId2, int nChunk2) ;
@@ -533,7 +538,9 @@ EXE_EXPORT bool ExeSurfTmFacetNearestMidPoint( int nId, int nFacet, const Point3
 EXE_EXPORT bool ExeSurfTmFacetCenter( int nId, int nFacet, int nRefId, Point3d& ptCen, Vector3d& vtN) ;
 EXE_EXPORT bool ExeSurfTmFacetNormVersor( int nId, int nFacet, int nRefId, Vector3d& vtNorm) ;
 EXE_EXPORT bool ExeSurfTmFacetsContact( int nId, int nF1, int nF2, int nRefId, bool& bAdjac, Point3d& ptP1, Point3d& ptP2, double& dAng) ;
+EXE_EXPORT bool ExeVolZmapVolume( int nId, double& dVol) ;
 EXE_EXPORT int  ExeVolZmapPartCount( int nId) ;
+EXE_EXPORT bool ExeVolZmapPartVolume( int nId, int nPart, double& dVol) ;
 EXE_EXPORT bool ExeTextNormVersor( int nId, int nRefId, Vector3d& vtNorm) ;
 EXE_EXPORT bool ExeTextGetContent( int nId, std::string& sText) ;
 EXE_EXPORT bool ExePointToIdGlob( Point3d& ptP, int nId) ;