diff --git a/src/Base/UnitsApi.cpp b/src/Base/UnitsApi.cpp
index d0c6d23f59..d5670588f1 100644
--- a/src/Base/UnitsApi.cpp
+++ b/src/Base/UnitsApi.cpp
@@ -92,6 +92,7 @@ void UnitsApi::setSchema(UnitSystem s)
         case Imperial1: UserPrefSystem = new UnitsSchemaImperial1(); break;
         case ImperialDecimal: UserPrefSystem = new UnitsSchemaImperialDecimal(); break;
         case Centimeters: UserPrefSystem = new UnitsSchemaCentimeters(); break;
+        case ImperialBuilding: UserPrefSystem = new UnitsSchemaImperialBuilding(); break;
         default  : UserPrefSystem = new UnitsSchemaInternal(); s = SI1; break;
     }
 
diff --git a/src/Base/UnitsSchema.h b/src/Base/UnitsSchema.h
index b9c0f03084..674ab882a3 100644
--- a/src/Base/UnitsSchema.h
+++ b/src/Base/UnitsSchema.h
@@ -40,7 +40,8 @@ enum UnitSystem {
     SI2 = 1 , /** MKS (m,kg,s) SI system */
     Imperial1 = 2, /** the Imperial system (http://en.wikipedia.org/wiki/Imperial_units) */
     ImperialDecimal = 3, /** Imperial with length in inch only */
-    Centimeters = 4 /** All lengths in centimeters, areas and volumes in square/cubic meters */
+    Centimeters = 4, /** All lengths in centimeters, areas and volumes in square/cubic meters */
+    ImperialBuilding = 5 /** All lengths in feet + inches + fractions */
 } ;
     
 
diff --git a/src/Base/UnitsSchemaImperial1.cpp b/src/Base/UnitsSchemaImperial1.cpp
index 44d6b50ee7..c1cd2e6327 100644
--- a/src/Base/UnitsSchemaImperial1.cpp
+++ b/src/Base/UnitsSchemaImperial1.cpp
@@ -21,7 +21,10 @@
  ***************************************************************************/
 
 
-#include "PreCompiled.h"
+#include "PreCompiled.h"
+#ifndef _PreComp_
+# include <sstream>
+#endif
 #ifdef __GNUC__
 # include <unistd.h>
 #endif
@@ -58,7 +61,7 @@ using namespace Base;
 QString UnitsSchemaImperial1::schemaTranslate(Base::Quantity quant,double &factor,QString &unitString)
 {
     double UnitValue = std::abs(quant.getValue());
-	Unit unit = quant.getUnit();
+    Unit unit = quant.getUnit();
     // for imperial user/programmer mind; UnitValue is in internal system, that means
     // mm/kg/s. And all combined units have to be calculated from there! 
 
@@ -117,7 +120,7 @@ QString UnitsSchemaImperial1::schemaTranslate(Base::Quantity quant,double &facto
         unitString = quant.getUnit().getString();
         factor = 1.0;
     }
-	return QString::fromLatin1("%L1 %2").arg(quant.getValue() / factor).arg(unitString);
+    return QString::fromLatin1("%L1 %2").arg(quant.getValue() / factor).arg(unitString);
 }
 
 
@@ -126,7 +129,7 @@ QString UnitsSchemaImperial1::schemaTranslate(Base::Quantity quant,double &facto
 QString UnitsSchemaImperialDecimal::schemaTranslate(Base::Quantity quant,double &factor,QString &unitString)
 {
     double UnitValue = std::abs(quant.getValue());
-	Unit unit = quant.getUnit();
+    Unit unit = quant.getUnit();
     // for imperial user/programmer mind; UnitValue is in internal system, that means
     // mm/kg/s. And all combined units have to be calculated from there! 
 
@@ -176,6 +179,77 @@ QString UnitsSchemaImperialDecimal::schemaTranslate(Base::Quantity quant,double
     QLocale Lc = QLocale::system();
     Lc.setNumberOptions(Lc.OmitGroupSeparator | Lc.RejectGroupSeparator);
     QString Ln = Lc.toString(quant.getValue() / factor);
-	return QString::fromLatin1("%1 %2").arg(Ln).arg(unitString);
-	//return QString::fromLatin1("%L1 %2").arg(quant.getValue() / factor).arg(unitString);
+    return QString::fromLatin1("%1 %2").arg(Ln).arg(unitString);
+    //return QString::fromLatin1("%L1 %2").arg(quant.getValue() / factor).arg(unitString);
+}
+
+
+
+QString UnitsSchemaImperialBuilding::schemaTranslate(Base::Quantity quant,double &factor,QString &unitString)
+{
+    // this schema expresses distances in feet + inches + fractions
+    // ex: 3'- 4 1/4"
+    Unit unit = quant.getUnit();
+    if(unit == Unit::Length){
+        unitString = QString::fromLatin1("in");
+        factor = 25.4;
+        double inchValue = quant.getValue()/25.4;
+        int feet = inchValue/12;
+        double inchPart = inchValue - (double)feet*12;
+        int inches = (int)inchPart;
+        double fraction = inchPart - (int)inchPart;
+        if (fraction > 0.9375) {
+            inches++;
+            fraction = 0.0;
+        }
+        // if the quantity is too small it is rounded to zero
+        if (quant.getValue() <= 1.5875)
+            return QString::fromLatin1("0");
+        // build representation
+        std::stringstream output;
+        // feet
+        if (feet > 0) {
+            output << feet << "'";
+            if ( (inches > 0) || (fraction > 0.0625) )
+                output << " - ";
+        }
+        // inches
+        if (inches > 0) {
+            output << inches;
+            if (fraction > 0.0625)
+                output << " ";
+            else
+                output << "\"";
+        }
+        // fraction
+        if (fraction <= 0.0625) {}
+        else if (fraction > 0.8125)
+            output << "7/8\"";
+        else if (fraction > 0.6875)
+            output << "3/4\"";
+        else if (fraction > 0.5625)
+            output << "5/8\"";
+        else if (fraction > 0.4375)
+            output << "1/2\"";
+        else if (fraction > 0.3125)
+            output << "3/8\"";
+        else if (fraction > 0.1875)
+            output << "1/4\"";
+        else
+            output << "1/8\"";
+        return QString::fromLatin1(output.str().c_str());
+    }else if (unit == Unit::Area){
+        unitString = QString::fromLatin1("sqft");
+        factor = 92903.04;
+    }else if (unit == Unit::Volume){
+        unitString = QString::fromLatin1("cuft");
+        factor = 28316846.592;
+    }else{
+        unitString = quant.getUnit().getString();
+        factor = 1.0;
+    }
+    QLocale Lc = QLocale::system();
+    Lc.setNumberOptions(Lc.OmitGroupSeparator | Lc.RejectGroupSeparator);
+    QString Ln = Lc.toString(quant.getValue() / factor);
+    return QString::fromLatin1("%1 %2").arg(Ln).arg(unitString);
 }
diff --git a/src/Base/UnitsSchemaImperial1.h b/src/Base/UnitsSchemaImperial1.h
index 67496ec791..48a939e2a8 100644
--- a/src/Base/UnitsSchemaImperial1.h
+++ b/src/Base/UnitsSchemaImperial1.h
@@ -58,6 +58,19 @@ public:
 
 };
 
+/** The schema class for the imperial unit system
+ *  Here are the definiton for the imperial unit system.
+ *  It also defines how the value/units get printed.
+ */
+class UnitsSchemaImperialBuilding: public UnitsSchema
+{
+public:
+    //virtual void setSchemaUnits(void);
+    //virtual void resetSchemaUnits(void);
+	virtual QString schemaTranslate(Base::Quantity quant,double &factor,QString &unitString);
+
+};
+
 
 } // namespace Base
 
diff --git a/src/Gui/DlgSettingsUnits.ui b/src/Gui/DlgSettingsUnits.ui
index 88b96a2f86..b587d685eb 100644
--- a/src/Gui/DlgSettingsUnits.ui
+++ b/src/Gui/DlgSettingsUnits.ui
@@ -56,6 +56,11 @@
             <string>Building Euro (cm/m²/m³)</string>
            </property>
           </item>
+          <item>
+           <property name="text">
+            <string>Building US (ft-in/sqft/cuft)</string>
+           </property>
+          </item>
          </widget>
         </item>
        </layout>