diff --git a/lib/cg-point.js b/lib/cg-point.js
index 58422d9..9d5acb5 100644
--- a/lib/cg-point.js
+++ b/lib/cg-point.js
@@ -54,6 +54,7 @@ function convertPoint(cgPoint, projection, featureProps) {
         },
         properties: {
             ...featureProps,
+            landxmlAltitude: pointCoords[2],
         }
     };
 }
\ No newline at end of file
diff --git a/lib/pipe-network.js b/lib/pipe-network.js
index 8d9d6fb..677d4b2 100644
--- a/lib/pipe-network.js
+++ b/lib/pipe-network.js
@@ -155,6 +155,10 @@ function convertStructs(pipeNetwork, projection, baseProps, opts) {
     let center = [seq[1], seq[0], seq[2]];
     center = proj4(projection, 'WGS84', center);
 
+    featureProps.landxmlCenterLongitude = center[0];
+    featureProps.landxmlCenterLatitude = center[1];
+    featureProps.landxmlCenterAltitude = center[2];
+
     let geometry;
 
     if (rectStructNode) {