diff --git a/docs/source/assembly.rst b/docs/source/assembly.rst
index 8df8e00..8f256ef 100644
--- a/docs/source/assembly.rst
+++ b/docs/source/assembly.rst
@@ -27,7 +27,7 @@ The field :code:`assembly` includes nine entries that aim at describing the over
     Height of the hub center from the ground or from the mean sea level
 
 :code:`rotor_diameter` : Float, m 
-    Rotor diameter, defined as the sum of hub diameter and two times the three dimensional curved blade length
+    Rotor diameter, defined as the sum of hub diameter and two times the blade length along its z axis, see :ref:`blade`
 
 :code:`rated_power` : Float, W 
     Electrical rated power of the wind turbine
diff --git a/docs/source/blade.rst b/docs/source/blade.rst
index ac2e502..2f4b403 100644
--- a/docs/source/blade.rst
+++ b/docs/source/blade.rst
@@ -28,7 +28,6 @@ outer_shape_bem
 :code:`rthick.values` : Array of floats 
     This array has recently been added to windIO to overcome the uncertainty in the interpolated distribution of relative thickness along blade span. It should match the field :code:`airfoil_position`
 
-
 :code:`reference_axis` : Object
     The field :code:`reference_axis` describes the three-dimensional shape of the reference axis of the blade via three sub-fields, namely :code:`x`, :code:`y`, and :code:`z`. The three sub-fields contain the pairs of arrays :code:`grid` and :code:`values`. The former is nondimensional, while the latter is expressed in meters.
 
diff --git a/windIO/turbine/IEAontology_schema.yaml b/windIO/turbine/IEAontology_schema.yaml
index 188c3b0..ec5375f 100644
--- a/windIO/turbine/IEAontology_schema.yaml
+++ b/windIO/turbine/IEAontology_schema.yaml
@@ -159,7 +159,7 @@ properties:
                                         $ref: "#/definitions/distributed_data/grid_nd"
                                     values:
                                         $ref: "#/definitions/distributed_data/grid_nd"
-                            t/c:
+                            rthick:
                                 type: object
                                 required:
                                     - grid
@@ -204,17 +204,6 @@ properties:
                             # coordinates:
                                     # description: Coordinates expressed in the blade root coordinate system.
                                     # $ref: "#/definitions/distributed_data/coordinates"
-                            rthick:
-                                type: object
-                                required:
-                                    - grid
-                                    - values
-                                properties:
-                                    grid:
-                                        $ref: "#/definitions/distributed_data/grid_nd"
-                                    values:
-                                        $ref: "#/definitions/distributed_data/grid_nd"
-
                     elastic_properties_mb:
                         type: object
                         properties:
@@ -2013,7 +2002,6 @@ properties:
                                     unit: Newton
                                     description: Maximum vertical load (perpendicular to the sea floor) that the anchor can support
                                     minimum: 0.0
-
     airfoils:
         type: array
         description: Database of airfoils
@@ -2443,7 +2431,6 @@ properties:
                         unit: rad/s
                         minimum: 0
                         default: 10.
-
     environment:
         type: object
         required: