diff --git a/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_solid_density.md b/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_solid_density.md
new file mode 100644
index 0000000000000000000000000000000000000000..4cc76c579164f400870a8eb0ac4d6c8d58e2c13e
--- /dev/null
+++ b/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_solid_density.md
@@ -0,0 +1 @@
+\copydoc ProcessLib::SmallDeformation::SmallDeformationProcessData::solid_density
diff --git a/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_specific_body_force.md b/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_specific_body_force.md
new file mode 100644
index 0000000000000000000000000000000000000000..a481e852d81314336ca7ec474924e2763c2209d3
--- /dev/null
+++ b/Documentation/ProjectFile/prj/processes/process/SMALL_DEFORMATION/t_specific_body_force.md
@@ -0,0 +1 @@
+\copydoc ProcessLib::SmallDeformation::SmallDeformationProcessData::specific_body_force
diff --git a/ProcessLib/SmallDeformation/CreateSmallDeformationProcess.cpp b/ProcessLib/SmallDeformation/CreateSmallDeformationProcess.cpp
index ceb84f4daed87b3042c703bbadf2a4b382acdd17..8db7dc6dfc234d1d6b49bb569729339b8da57f20 100644
--- a/ProcessLib/SmallDeformation/CreateSmallDeformationProcess.cpp
+++ b/ProcessLib/SmallDeformation/CreateSmallDeformationProcess.cpp
@@ -97,8 +97,32 @@ createSmallDeformationProcess(
             type.c_str());
     }
 
+    // Solid density
+    auto& solid_density = findParameter<double>(
+        config,
+        //! \ogs_file_param_special{prj__processes__process__SMALL_DEFORMATION__solid_density}
+        "solid_density", parameters, 1);
+    DBUG("Use \'%s\' as solid density parameter.", solid_density.name.c_str());
+
+    // Specific body force
+    Eigen::Matrix<double, DisplacementDim, 1> specific_body_force;
+    {
+        std::vector<double> const b =
+            //! \ogs_file_param{prj__processes__process__SMALL_DEFORMATION__specific_body_force}
+            config.getConfigParameter<std::vector<double>>(
+                "specific_body_force");
+        if (b.size() != DisplacementDim)
+            OGS_FATAL(
+                "The size of the specific body force vector does not match the "
+                "displacement dimension. Vector size is %d, displacement "
+                "dimension is %d",
+                b.size(), DisplacementDim);
+
+        std::copy_n(b.data(), b.size(), specific_body_force.data());
+    }
+
     SmallDeformationProcessData<DisplacementDim> process_data{
-        std::move(material)};
+        std::move(material), solid_density, specific_body_force};
 
     SecondaryVariableCollection secondary_variables;
 
diff --git a/ProcessLib/SmallDeformation/SmallDeformationProcessData.h b/ProcessLib/SmallDeformation/SmallDeformationProcessData.h
index 3aca5d5630dc0f8263ec91a3bdf41523a00dd6c2..115b0f286cc1b154996f053032b1d7e3fc435d51 100644
--- a/ProcessLib/SmallDeformation/SmallDeformationProcessData.h
+++ b/ProcessLib/SmallDeformation/SmallDeformationProcessData.h
@@ -26,13 +26,22 @@ struct SmallDeformationProcessData
 {
     SmallDeformationProcessData(
         std::unique_ptr<MaterialLib::Solids::MechanicsBase<DisplacementDim>>&&
-            material)
-        : material{std::move(material)}
+            material,
+        Parameter<double> const& solid_density_,
+        Eigen::Matrix<double, DisplacementDim, 1>
+            specific_body_force_)
+        : material{std::move(material)},
+          solid_density(solid_density_),
+          specific_body_force(std::move(specific_body_force_))
     {
     }
 
     SmallDeformationProcessData(SmallDeformationProcessData&& other)
-        : material{std::move(other.material)}, dt{other.dt}, t{other.t}
+        : material{std::move(other.material)},
+          solid_density(other.solid_density),
+          specific_body_force(other.specific_body_force),
+          dt{other.dt},
+          t{other.t}
     {
     }
 
@@ -47,6 +56,12 @@ struct SmallDeformationProcessData
 
     std::unique_ptr<MaterialLib::Solids::MechanicsBase<DisplacementDim>>
         material;
+    /// Solid's density. A scalar quantity, Parameter<double>.
+    Parameter<double> const& solid_density;
+    /// Specific body forces applied to the solid.
+    /// It is usually used to apply gravitational forces.
+    /// A vector of displacement dimension's length.
+    Eigen::Matrix<double, DisplacementDim, 1> const specific_body_force;
     double dt = 0;
     double t = 0;
 };