diff --git a/EXeExecutor.h b/EXeExecutor.h
index aa19439..0c3b990 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -809,6 +809,8 @@ EXE_EXPORT bool ExeLineBoxInters( const Point3d& ptP, const Vector3d& vtDir, con
                                   INTDBLVECTOR& vInters) ;
 EXE_EXPORT bool ExeLineSurfTmInters( const Point3d& ptP, const Vector3d& vtDir, int nId, int nRefType,
                                      INTDBLVECTOR& vInters) ;
+EXE_EXPORT bool ExeLineSurfBzInters( const Point3d& ptP, const Vector3d& vtDir, int nId, int nRefType,
+                                     INTDBLVECTOR& vInters) ;
 EXE_EXPORT bool ExeLineVolZmapInters( const Point3d& ptP, const Vector3d& vtDir, int nId, int nRefType,
                                       INTDBLVECTOR& vInters) ;
 EXE_EXPORT int  ExePlaneCurveInters( const Point3d& ptOn, const Vector3d& vtN, const int nId, const int nDestGrpId, const int nRefType,
diff --git a/EgkIntersLineSurfBez.h b/EgkIntersLineSurfBez.h
new file mode 100644
index 0000000..69ef158
--- /dev/null
+++ b/EgkIntersLineSurfBez.h
@@ -0,0 +1,67 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2024
+//----------------------------------------------------------------------------
+// File : EGkIntersLineSurfBez.h      Data : 06.02.24         Versione : 2.6b1
+// Contenuto : Dichiarazione della classe intersezione Linea/SurfTriMesh.
+//
+//
+//
+// Modifiche : 06.02.24 DB Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#include "/EgtDev/Include/EGkSurfTriMesh.h"
+#include "/EgtDev/Include/EGkIntersLineTria.h"
+#include "/EgtDev/Include/EGkHashGrids2d.h"
+#include "/EgtDev/Include/EGkSurfBezier.h"
+
+//----------------------- Macro per import/export ----------------------------
+#undef EGK_EXPORT
+#if defined( I_AM_EGK)            // da definirsi solo nella DLL
+#define EGK_EXPORT __declspec( dllexport)
+#else
+#define EGK_EXPORT __declspec( dllimport)
+#endif
+
+//-----------------------------------------------------------------------------
+//! dati di intersezione linea - superficie trimesh
+struct IntLinSbzInfo {
+   int     nILTT ;          //!< tipo di intersezione linea-triangolo
+   double  dU ;             //!< parametro sulla linea
+   double  dU2 ;            //!< secondo parametro sulla linea
+   int     nT ;             //!< indice del triangolo della superficie trimesh
+   double  dCosDN ;         //!< coseno dell'angolo tra la direzione della linea e la normale del triangolo
+   Point3d ptI ;            //!< punto di intersezione
+   Point3d ptI2 ;           //!< secondo punto di intersezione (termine di tratto sovrapposto)
+   Point3d ptUV ;            //!< coordinate del punto nello spazio parametrico
+   Point3d ptUV2 ;           //!< coordinate del secondo punto nello spazio parametrico
+   // costruttori
+   IntLinSbzInfo( void) : nILTT( ILTT_NO), dU( 0), dU2( 0), nT(0), dCosDN(0), ptI(), ptI2(), ptUV(), ptUV2(){}
+   IntLinSbzInfo( int nIL, double dUU, int nTT, double dCos, const Point3d& ptP, const Point3d ptSP)
+      : nILTT( nIL), dU( dUU), dU2( 0), nT( nTT), dCosDN( dCos), ptI( ptP), ptI2(), ptUV( ptSP), ptUV2() {}
+   IntLinSbzInfo( int nIL, double dUU, double dUU2, int nTT, double dCos, const Point3d& ptP, const Point3d& ptP2, const Point3d& ptSP, const Point3d& ptSP2)
+      : nILTT( nIL), dU( dUU), dU2( dUU2), nT( nTT), dCosDN( dCos), ptI( ptP), ptI2( ptP2), ptUV( ptSP), ptUV2( ptSP2) {}
+} ;
+//! vettore di IntLinSbzInfo
+typedef std::vector<IntLinSbzInfo>  ILSBIVECTOR ;
+
+//-----------------------------------------------------------------------------
+EGK_EXPORT bool IntersLineSurfBz( const Point3d& ptL, const Vector3d& vtL, double dLen, const ISurfBezier* pSBz,
+                                  ILSBIVECTOR& vInfo, bool bFinite = true) ;
+
+//-----------------------------------------------------------------------------
+class IntersParLinesSurfBz
+{
+public :
+   EGK_EXPORT IntersParLinesSurfBz( const Frame3d& frLines, const ISurfBezier& SBz) ;
+   EGK_EXPORT bool GetInters( const Point3d& ptL, double dLen, ILSBIVECTOR& vInfo, bool bFinite = true) const ;
+
+private :
+   bool                m_bOk ;
+   const Frame3d       m_frLines ;
+   const ISurfBezier*  m_pSBz ;
+   HashGrids2d         m_HGrids ;
+} ;