diff --git a/docs/source_docs/user_guide/inputs/solids_model.rst b/docs/source_docs/user_guide/inputs/solids_model.rst
index 101679d322df8f4b4de6adab2f291dba5bc6eafd..7b57e3b5a9823a4217e649e907a787935881e7a5 100644
--- a/docs/source_docs/user_guide/inputs/solids_model.rst
+++ b/docs/source_docs/user_guide/inputs/solids_model.rst
@@ -75,17 +75,17 @@ Enabling the DEM solver and specifying model options.
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
 | dem.spring_const.pw     | Normal spring constant :: particle to wall collisions [required]        | Real     |  0        |
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
-| dem.spring_tang_fac.pp  | Tangential-to-normal spring constant factor :: particle to particle     | Real     |  0        |
-|                         | collisions [required]                                                   |          |           |
+| dem.spring_tang_fac.pp  | Tangential-to-normal spring constant factor :: particle to particle     | Real     | 0.2857    |
+|                         | collisions                                                              |          |           |
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
-| dem.spring_tang_fac.pw  | Tangential-to-normal spring constant factor :: particle to wall         | Real     |  0        |
-|                         | collisions [required]                                                   |          |           |
+| dem.spring_tang_fac.pw  | Tangential-to-normal spring constant factor :: particle to wall         | Real     | 0.2857    |
+|                         | collisions                                                              |          |           |
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
-| dem.damping_tang_fac.pp | Factor relating the tangential damping coefficient to the normal        | Real     |  0        |
-|                         | damping coefficient :: particle to particle collisions [required]       |          |           |
+| dem.damping_tang_fac.pp | Factor relating the tangential damping coefficient to the normal        | Real     |  0.5      |
+|                         | damping coefficient :: particle to particle collisions                  |          |           |
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
-| dem.damping_tang_fac.pw | Factor relating the tangential damping coefficient to the normal        | Real     |  0        |
-|                         | damping coefficient :: particle to wall collisions [required]           |          |           |
+| dem.damping_tang_fac.pw | Factor relating the tangential damping coefficient to the normal        | Real     |  0.5      |
+|                         | damping coefficient :: particle to wall collisions                      |          |           |
 +-------------------------+-------------------------------------------------------------------------+----------+-----------+
 
 The following inputs use the DEM type names specified using the `dem.solve` input to define restitution coefficients and