diff --git a/res/adamantium.xml b/res/adamantium.xml
index d5cdd4fae..cc1cedadc 100644
--- a/res/adamantium.xml
+++ b/res/adamantium.xml
@@ -3,7 +3,7 @@
 
   <resource name="adamantium" limited="yes" material="rm_adamantium">
     <item weight="200" score="200">
-      <construction skill="mining" minskill="8" reqsize="1"/>
+      <construction skill="mining" minskill="8"/>
     </item>
     <resourcelimit>
       <modifier type="require" building="mine"/>
@@ -13,7 +13,7 @@
 
   <resource name="adamantiumaxe">
     <item weight="100" score="500">
-      <construction skill="weaponsmithing" minskill="8" reqsize="1">
+      <construction skill="weaponsmithing" minskill="8">
         <requirement type="adamantium" quantity="1"/>
         <requirement type="log" quantity="1"/>
       </construction>
@@ -26,7 +26,7 @@
 
   <resource name="adamantiumplate">
     <item weight="100" score="2000">
-      <construction skill="armorer" minskill="10" reqsize="1">
+      <construction skill="armorer" minskill="10">
         <requirement type="adamantium" quantity="3"/>
       </construction>
       <armor ac="7" penalty="0.1"/>
diff --git a/res/buildings/castle-2.xml b/res/buildings/castle-2.xml
index a54957415..593e9ae5e 100644
--- a/res/buildings/castle-2.xml
+++ b/res/buildings/castle-2.xml
@@ -3,22 +3,22 @@
   <function name="name" value="castle_name_2"/>
   <function name="protection" value="building_protection"/>
   <function name="taxes" value="lua_building_taxes"/>
-  <construction skill="building" minskill="1" maxsize="10" reqsize="1" defense_bonus="0">
+  <construction skill="building" minskill="1" maxsize="10" defense_bonus="0">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="2" maxsize="40" reqsize="1" defense_bonus="1">
+  <construction skill="building" minskill="2" maxsize="40" defense_bonus="1">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="3" maxsize="200" reqsize="1" defense_bonus="3">
+  <construction skill="building" minskill="3" maxsize="200" defense_bonus="3">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="4" maxsize="1000" reqsize="1" defense_bonus="5">
+  <construction skill="building" minskill="4" maxsize="1000" defense_bonus="5">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="5" maxsize="5000" reqsize="1" defense_bonus="8">
+  <construction skill="building" minskill="5" maxsize="5000" defense_bonus="8">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="6" reqsize="1" defense_bonus="12">
+  <construction skill="building" minskill="6" defense_bonus="12">
     <requirement type="stone" quantity="1"/>
   </construction>
 </building>
diff --git a/res/buildings/castle.xml b/res/buildings/castle.xml
index 9a63d7dc8..253f49811 100644
--- a/res/buildings/castle.xml
+++ b/res/buildings/castle.xml
@@ -2,25 +2,25 @@
 <building name="castle" capacity="1" fort="yes">
   <function name="name" value="castle_name"/>
   <function name="protection" value="building_protection"/>
-  <construction skill="building" minskill="1" maxsize="2" reqsize="1" defense_bonus="0">
+  <construction skill="building" minskill="1" maxsize="2" defense_bonus="0">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="1" maxsize="8" reqsize="1" defense_bonus="0">
+  <construction skill="building" minskill="1" maxsize="8" defense_bonus="0">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="2" maxsize="40" reqsize="1" defense_bonus="1">
+  <construction skill="building" minskill="2" maxsize="40" defense_bonus="1">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="3" maxsize="200" reqsize="1" defense_bonus="3">
+  <construction skill="building" minskill="3" maxsize="200" defense_bonus="3">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="4" maxsize="1000" reqsize="1" defense_bonus="5">
+  <construction skill="building" minskill="4" maxsize="1000" defense_bonus="5">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="5" maxsize="5000" reqsize="1" defense_bonus="8">
+  <construction skill="building" minskill="5" maxsize="5000" defense_bonus="8">
     <requirement type="stone" quantity="1"/>
   </construction>
-  <construction skill="building" minskill="6" reqsize="1" defense_bonus="12">
+  <construction skill="building" minskill="6" defense_bonus="12">
     <requirement type="stone" quantity="1"/>
   </construction>
 </building>
diff --git a/res/core/armor/chainmail.xml b/res/core/armor/chainmail.xml
index 81152f89e..b03221b35 100644
--- a/res/core/armor/chainmail.xml
+++ b/res/core/armor/chainmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="chainmail">
   <item weight="200" score="90">
-    <construction skill="armorer" minskill="3" reqsize="1">
+    <construction skill="armorer" minskill="3">
       <requirement type="iron" quantity="3"/>
     </construction>
     <armor ac="3" penalty="0.15" magres="0.0"/>
diff --git a/res/core/armor/laenmail.xml b/res/core/armor/laenmail.xml
index bdcf6b7e1..0e1411945 100644
--- a/res/core/armor/laenmail.xml
+++ b/res/core/armor/laenmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laenmail">
   <item weight="100" score="1000">
-    <construction skill="armorer" minskill="9" reqsize="1">
+    <construction skill="armorer" minskill="9">
       <requirement type="laen" quantity="3"/>
     </construction>
     <armor ac="6" penalty="0.0" magres="0.3" laen="yes" />
diff --git a/res/core/armor/laenshield.xml b/res/core/armor/laenshield.xml
index f5eb2d783..8a9d6d5c3 100644
--- a/res/core/armor/laenshield.xml
+++ b/res/core/armor/laenshield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laenshield">
   <item weight="0" score="1000">
-    <construction skill="armorer" minskill="7" reqsize="1">
+    <construction skill="armorer" minskill="7">
       <requirement type="laen" quantity="1"/>
     </construction>
     <armor ac="2" penalty="-0.25" magres="0.3" laen="yes" shield="yes" />
diff --git a/res/core/armor/plate.xml b/res/core/armor/plate.xml
index eb10f6359..a22064e90 100644
--- a/res/core/armor/plate.xml
+++ b/res/core/armor/plate.xml
@@ -2,7 +2,7 @@
 <resource name="plate">
   <item weight="400" score="150">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="armorer" minskill="4" reqsize="1">
+    <construction skill="armorer" minskill="4">
       <requirement type="iron" quantity="5"/>
     </construction>
     <armor ac="5" penalty="0.30" magres="0.0"/>
diff --git a/res/core/armor/rustychainmail.xml b/res/core/armor/rustychainmail.xml
index a52b4db7b..b46380634 100644
--- a/res/core/armor/rustychainmail.xml
+++ b/res/core/armor/rustychainmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustychainmail">
   <item weight="200" score="30">
-    <construction skill="armorer" minskill="3" reqsize="1">
+    <construction skill="armorer" minskill="3">
       <requirement type="iron" quantity="3"/>
     </construction>
     <armor ac="2" penalty="0.30" magres="0.0"/>
diff --git a/res/core/armor/rustyshield.xml b/res/core/armor/rustyshield.xml
index 4c34f7ee1..56a8abe5a 100644
--- a/res/core/armor/rustyshield.xml
+++ b/res/core/armor/rustyshield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustyshield">
   <item weight="100" score="10">
-    <construction skill="armorer" minskill="2" reqsize="1">
+    <construction skill="armorer" minskill="2">
       <requirement type="iron" quantity="1"/>
     </construction>
     <armor ac="1" penalty="0.0" magres="0.0" shield="yes"/>
diff --git a/res/core/armor/shield.xml b/res/core/armor/shield.xml
index 9a72baf9a..b0ee7de3a 100644
--- a/res/core/armor/shield.xml
+++ b/res/core/armor/shield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="shield">
   <item weight="100" score="30">
-    <construction skill="armorer" minskill="2" reqsize="1">
+    <construction skill="armorer" minskill="2">
       <requirement type="iron" quantity="1"/>
     </construction>
     <armor ac="1" penalty="-0.15" magres="0.0" shield="yes"/>
diff --git a/res/core/common/buildings.xml b/res/core/common/buildings.xml
index 63ac3e650..423e90deb 100644
--- a/res/core/common/buildings.xml
+++ b/res/core/common/buildings.xml
@@ -66,7 +66,7 @@
   </building>
 
   <building name="monument" namechange="no" capacity="1">
-    <construction skill="building" minskill="4" reqsize="1">
+    <construction skill="building" minskill="4">
       <requirement type="log" quantity="1"/>
       <requirement type="stone" quantity="1"/>
       <requirement type="iron" quantity="1"/>
@@ -76,7 +76,7 @@
 
   <building name="stables" capacity="1">
     <maintenance type="money" amount="150" vital="yes"/>
-    <construction skill="building" minskill="2" reqsize="1">
+    <construction skill="building" minskill="2">
       <requirement type="log" quantity="4"/>
       <requirement type="stone" quantity="2"/>
       <requirement type="iron" quantity="1"/>
@@ -86,7 +86,7 @@
 
   <building name="sawmill" capacity="1">
     <maintenance type="money" amount="250" vital="yes"/>
-    <construction skill="building" minskill="3" reqsize="1">
+    <construction skill="building" minskill="3">
       <requirement type="log" quantity="5"/>
       <requirement type="stone" quantity="5"/>
       <requirement type="iron" quantity="3"/>
@@ -98,7 +98,7 @@
     <function name="init" value="init_smithy"/>
     <maintenance type="money" amount="300" vital="yes"/>
     <maintenance type="log" amount="1"/>
-    <construction skill="building" minskill="3" reqsize="1">
+    <construction skill="building" minskill="3">
       <requirement type="log" quantity="5"/>
       <requirement type="stone" quantity="5"/>
       <requirement type="iron" quantity="2"/>
@@ -139,7 +139,7 @@
 
   <building name="quarry" capacity="1">
     <maintenance type="money" amount="250" vital="yes"/>
-    <construction skill="building" minskill="2" reqsize="1">
+    <construction skill="building" minskill="2">
       <requirement type="iron" quantity="1"/>
       <requirement type="log" quantity="5"/>
       <requirement type="stone" quantity="1"/>
@@ -149,7 +149,7 @@
 
   <building name="mine" capacity="1">
     <maintenance type="money" amount="500" vital="yes"/>
-    <construction skill="building" minskill="4" reqsize="1">
+    <construction skill="building" minskill="4">
       <requirement type="iron" quantity="1"/>
       <requirement type="log" quantity="10"/>
       <requirement type="stone" quantity="5"/>
@@ -159,7 +159,7 @@
 
   <building name="lighthouse" capacity="1" maxcapacity="4">
     <maintenance type="money" amount="100" vital="yes"/>
-    <construction skill="building" minskill="3" reqsize="1">
+    <construction skill="building" minskill="3">
       <requirement type="iron" quantity="1"/>
       <requirement type="log" quantity="1"/>
       <requirement type="stone" quantity="2"/>
diff --git a/res/core/common/construction.xml b/res/core/common/construction.xml
index 95dcb6a33..089ddfe1c 100644
--- a/res/core/common/construction.xml
+++ b/res/core/common/construction.xml
@@ -1,10 +1,10 @@
 <?xml version="1.0"?>
 <!-- TODO: this does not work yet -->
 <production>
-  <construction resource="laenshield" skill="armorer" minskill="7" reqsize="1">
+  <construction resource="laenshield" skill="armorer" minskill="7">
     <requirement type="laen" quantity="1"/>
   </construction>
-  <construction resource="laenmail" skill="armorer" minskill="9" reqsize="1">
+  <construction resource="laenmail" skill="armorer" minskill="9">
     <requirement type="laen" quantity="3"/>
   </construction>
 </production>
diff --git a/res/core/common/items.xml b/res/core/common/items.xml
index c8910e695..6afd220ff 100644
--- a/res/core/common/items.xml
+++ b/res/core/common/items.xml
@@ -143,7 +143,7 @@
 
   <resource name="catapultammo">
     <item weight="1000">
-      <construction skill="quarrying" minskill="3" reqsize="1">
+      <construction skill="quarrying" minskill="3">
         <requirement type="stone" quantity="1"/>
       </construction>
     </item>
diff --git a/res/core/common/potions.xml b/res/core/common/potions.xml
index f444e5a94..84b1e5f52 100644
--- a/res/core/common/potions.xml
+++ b/res/core/common/potions.xml
@@ -7,7 +7,7 @@
     <item weight="0" score="30">
       <function name="use" value="usepotion"/>
       <potion level="1"/>
-      <construction skill="alchemy" minskill="2" reqsize="1">
+      <construction skill="alchemy" minskill="2">
         <requirement type="h4"/>
         <requirement type="h12"/>
       </construction>
@@ -18,7 +18,7 @@
     <item weight="0" score="30">
       <function name="use" value="usepotion"/>
       <potion level="1"/>
-      <construction skill="alchemy" minskill="2" reqsize="1">
+      <construction skill="alchemy" minskill="2">
         <requirement type="h6"/>
         <requirement type="h13"/>
       </construction>
@@ -29,7 +29,7 @@
     <item weight="0" score="30">
       <function name="use" value="usepotion"/>
       <potion level="1"/>
-      <construction skill="alchemy" minskill="2" reqsize="1">
+      <construction skill="alchemy" minskill="2">
         <requirement type="h0"/>
         <requirement type="h13"/>
       </construction>
@@ -40,7 +40,7 @@
     <item weight="0" score="30">
       <function name="use" value="usepotion"/>
       <potion level="1"/>
-      <construction skill="alchemy" minskill="2" reqsize="1">
+      <construction skill="alchemy" minskill="2">
         <requirement type="h5"/>
         <requirement type="h7"/>
       </construction>
@@ -51,7 +51,7 @@
     <item weight="0" score="60">
       <function name="use" value="usepotion"/>
       <potion level="2"/>
-      <construction skill="alchemy" minskill="4" reqsize="1">
+      <construction skill="alchemy" minskill="4">
         <requirement type="h14"/>
         <requirement type="h16"/>
         <requirement type="h1"/>
@@ -64,7 +64,7 @@
     <item weight="0" score="60">
       <function name="use" value="usehealingpotion"/>
       <potion level="2"/>
-      <construction skill="alchemy" minskill="4" reqsize="1">
+      <construction skill="alchemy" minskill="4">
         <requirement type="h19"/>
         <requirement type="h4"/>
         <requirement type="h1"/>
@@ -77,7 +77,7 @@
     <item weight="0" score="60">
       <function name="use" value="usebloodpotion"/>
       <potion level="2"/>
-      <construction skill="alchemy" minskill="4" reqsize="1">
+      <construction skill="alchemy" minskill="4">
         <requirement type="h17"/>
         <requirement type="h13"/>
         <requirement type="h4"/>
@@ -90,7 +90,7 @@
     <item weight="0" score="90">
       <function name="use" value="usepotion"/>
       <potion level="3"/>
-      <construction skill="alchemy" minskill="6" reqsize="1">
+      <construction skill="alchemy" minskill="6">
         <requirement type="h9"/>
         <requirement type="h15"/>
         <requirement type="h12"/>
@@ -103,7 +103,7 @@
     <item weight="0" score="90">
       <function name="useonother" value="usefoolpotion"/>
       <potion level="3"/>
-      <construction skill="alchemy" minskill="6" reqsize="1">
+      <construction skill="alchemy" minskill="6">
         <requirement type="h2"/>
         <requirement type="h3"/>
         <requirement type="h17"/>
@@ -116,7 +116,7 @@
     <item weight="0" score="90">
       <function name="use" value="usewarmthpotion"/>
       <potion level="3"/>
-      <construction skill="alchemy" minskill="6" reqsize="1">
+      <construction skill="alchemy" minskill="6">
         <requirement type="h18"/>
         <requirement type="h3"/>
         <requirement type="h16"/>
@@ -129,7 +129,7 @@
     <item weight="0" score="90">
       <function name="use" value="usepotion"/>
       <potion level="3"/>
-      <construction skill="alchemy" minskill="6" reqsize="1">
+      <construction skill="alchemy" minskill="6">
         <requirement type="h4"/>
         <requirement type="h11"/>
         <requirement type="h10"/>
@@ -142,7 +142,7 @@
     <item weight="0" score="90">
       <function name="use" value="usepotion"/>
       <potion level="3"/>
-      <construction skill="alchemy" minskill="6" reqsize="1">
+      <construction skill="alchemy" minskill="6">
         <requirement type="h19"/>
         <requirement type="h14"/>
         <requirement type="h0"/>
@@ -155,7 +155,7 @@
     <item weight="0" score="120">
       <function name="use" value="usepotion"/>
       <potion level="4"/>
-      <construction skill="alchemy" minskill="8" reqsize="1">
+      <construction skill="alchemy" minskill="8">
         <requirement type="h14"/>
         <requirement type="h20"/>
         <requirement type="h15"/>
@@ -169,7 +169,7 @@
     <item weight="0" score="120">
       <function name="use" value="usepotion"/>
       <potion level="4"/>
-      <construction skill="alchemy" minskill="8" reqsize="1">
+      <construction skill="alchemy" minskill="8">
         <requirement type="h5"/>
         <requirement type="h9"/>
         <requirement type="h12"/>
@@ -184,7 +184,7 @@
     <item weight="0" score="120">
       <function name="use" value="usepotion"/>
       <potion level="4"/>
-      <construction skill="alchemy" minskill="8" reqsize="1">
+      <construction skill="alchemy" minskill="8">
         <requirement type="h6"/>
         <requirement type="h12"/>
         <requirement type="h18"/>
diff --git a/res/core/resources/cart.xml b/res/core/resources/cart.xml
index af3860c9c..17dbdcb41 100644
--- a/res/core/resources/cart.xml
+++ b/res/core/resources/cart.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="cart">
   <item capacity="14000" weight="4000" score="60" vehicle="yes" big="yes">
-    <construction skill="cartmaking" minskill="1" reqsize="1">
+    <construction skill="cartmaking" minskill="1">
       <requirement type="log" quantity="5"/>
     </construction>
   </item>
diff --git a/res/core/resources/horse.xml b/res/core/resources/horse.xml
index abf6d856d..53699c696 100644
--- a/res/core/resources/horse.xml
+++ b/res/core/resources/horse.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="horse" limited="yes" material="rm_horse">
   <item big="yes" weight="5000" score="10" capacity="7000" animal="yes">
-    <construction skill="training" minskill="1" reqsize="1"/>
+    <construction skill="training" minskill="1"/>
     <function name="give" value="givehorses"/>
   </item>
   <resourcelimit>
diff --git a/res/core/resources/iron.xml b/res/core/resources/iron.xml
index 94dbc6390..7bc4cb428 100644
--- a/res/core/resources/iron.xml
+++ b/res/core/resources/iron.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="iron" limited="yes" material="rm_iron">
   <item weight="500" score="10">
-    <construction skill="mining" minskill="1" reqsize="1"/>
+    <construction skill="mining" minskill="1"/>
   </item>
   <resourcelimit>
     <modifier building="mine" type="skill" value="1"/>
diff --git a/res/core/resources/laen.xml b/res/core/resources/laen.xml
index efb13c5ed..571026a0a 100644
--- a/res/core/resources/laen.xml
+++ b/res/core/resources/laen.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laen" limited="yes" material="rm_laen">
   <item weight="200" score="100">
-    <construction skill="mining" minskill="7" reqsize="1"/>
+    <construction skill="mining" minskill="7"/>
   </item>
   <resourcelimit>
     <modifier type="require" building="mine"/>
diff --git a/res/core/resources/log.xml b/res/core/resources/log.xml
index c017682fc..012fe9a20 100644
--- a/res/core/resources/log.xml
+++ b/res/core/resources/log.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="log" material="rm_tree">
   <item weight="500" score="10">
-    <construction skill="forestry" minskill="1" reqsize="1"/>
+    <construction skill="forestry" minskill="1"/>
   </item>
   <resourcelimit>
     <modifier building="sawmill" type="skill" value="1"/>
diff --git a/res/core/resources/mallorn.xml b/res/core/resources/mallorn.xml
index e5c01506b..2d301758e 100644
--- a/res/core/resources/mallorn.xml
+++ b/res/core/resources/mallorn.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="mallorn" material="rm_mallorn">
   <item weight="500" score="30">
-    <construction skill="forestry" minskill="2" reqsize="1"/>
+    <construction skill="forestry" minskill="2"/>
   </item>
   <resourcelimit>
     <modifier building="sawmill" type="skill" value="1"/>
diff --git a/res/core/resources/mallornseed.xml b/res/core/resources/mallornseed.xml
index 1c7c1a800..7a5a0310f 100644
--- a/res/core/resources/mallornseed.xml
+++ b/res/core/resources/mallornseed.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <resource name="mallornseed" limited="yes">
   <item weight="10" score="100">
-    <construction skill="herbalism" minskill="4" reqsize="1"/>
+    <construction skill="herbalism" minskill="4"/>
   </item>
 </resource>
diff --git a/res/core/resources/seed.xml b/res/core/resources/seed.xml
index 2193fb8c8..99f5f5804 100644
--- a/res/core/resources/seed.xml
+++ b/res/core/resources/seed.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0"?>
 <resource name="seed" limited="yes">
   <item weight="10" score="50">
-    <construction skill="herbalism" minskill="3" reqsize="1"/>
+    <construction skill="herbalism" minskill="3"/>
   </item>
 </resource>
diff --git a/res/core/resources/stone.xml b/res/core/resources/stone.xml
index eed2fd2df..c227dcc5c 100644
--- a/res/core/resources/stone.xml
+++ b/res/core/resources/stone.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="stone" limited="yes" material="rm_stone">
   <item weight="6000" score="10" big="yes">
-    <construction skill="quarrying" minskill="1" reqsize="1"/>
+    <construction skill="quarrying" minskill="1"/>
   </item>
   <resourcelimit>
     <modifier building="quarry" type="skill" value="1"/>
diff --git a/res/core/ships.xml b/res/core/ships.xml
index 0ce254328..fc87bc3d3 100644
--- a/res/core/ships.xml
+++ b/res/core/ships.xml
@@ -2,28 +2,28 @@
 <ships>
   <ship name="trireme" range="7" storm="1.00" damage="1.00" cargo="200000" cptskill="4" minskill="1" sumskill="120" opensea="yes">
     <coast terrain="plain"/>
-    <construction skill="shipcraft" minskill="4" maxsize="200" reqsize="1">
+    <construction skill="shipcraft" minskill="4" maxsize="200">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
 
   <ship name="caravel" range="5" storm="1.00" damage="1.00" cargo="300000" cptskill="3" minskill="1" sumskill="30" opensea="yes">
     <coast terrain="plain"/>
-    <construction skill="shipcraft" minskill="3" maxsize="250" reqsize="1">
+    <construction skill="shipcraft" minskill="3" maxsize="250">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
 
   <ship name="dragonship" range="5" storm="1.00" damage="1.00" cargo="100000" cptskill="2" minskill="1" sumskill="50" opensea="yes">
     <coast terrain="plain"/>
-    <construction skill="shipcraft" minskill="2" maxsize="100" reqsize="1">
+    <construction skill="shipcraft" minskill="2" maxsize="100">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
 
   <ship name="longboat" range="3" storm="1.00" damage="1.00" cargo="50000" cptskill="1" minskill="1" sumskill="10" opensea="yes">
     <coast terrain="plain"/>
-    <construction skill="shipcraft" minskill="1" maxsize="50" reqsize="1">
+    <construction skill="shipcraft" minskill="1" maxsize="50">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -39,7 +39,7 @@
     <coast terrain="activevolcano"/>
     <coast terrain="iceberg_sleep"/>
     <coast terrain="iceberg"/>
-    <construction skill="shipcraft" minskill="100" maxsize="5" reqsize="1"/>
+    <construction skill="shipcraft" minskill="100" maxsize="5"/>
   </ship>
 
   <ship name="boat" range="2" storm="1.00" damage="1.00" cargo="5000" cptskill="1" minskill="1" sumskill="2" opensea="yes">
@@ -53,7 +53,7 @@
     <coast terrain="activevolcano"/>
     <coast terrain="iceberg_sleep"/>
     <coast terrain="iceberg"/>
-    <construction skill="shipcraft" minskill="1" maxsize="5" reqsize="1">
+    <construction skill="shipcraft" minskill="1" maxsize="5">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -69,7 +69,7 @@
     <coast terrain="activevolcano"/>
     <coast terrain="iceberg_sleep"/>
     <coast terrain="iceberg"/>
-    <construction skill="shipcraft" minskill="100" maxsize="50" reqsize="1"/>
+    <construction skill="shipcraft" minskill="100" maxsize="50"/>
   </ship>
 
 </ships>
diff --git a/res/core/weapons/axe.xml b/res/core/weapons/axe.xml
index 7ee77b21e..80a872ad7 100644
--- a/res/core/weapons/axe.xml
+++ b/res/core/weapons/axe.xml
@@ -2,7 +2,7 @@
 <resource name="axe">
   <item weight="200">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="1"/>
       <requirement type="iron" quantity="1"/>
     </construction>
diff --git a/res/core/weapons/bow.xml b/res/core/weapons/bow.xml
index c64392966..4fb9b2000 100644
--- a/res/core/weapons/bow.xml
+++ b/res/core/weapons/bow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="bow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="2" reqsize="1">
+    <construction skill="weaponsmithing" minskill="2">
       <requirement type="log" quantity="1"/>
     </construction>
     <weapon pierce="true" missile="true" skill="bow" offmod="0" defmod="0" reload="0">
diff --git a/res/core/weapons/catapult.xml b/res/core/weapons/catapult.xml
index 08dc83457..e05c5a025 100644
--- a/res/core/weapons/catapult.xml
+++ b/res/core/weapons/catapult.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="catapult">
   <item weight="10000" big="yes">
-    <construction skill="cartmaking" minskill="5" reqsize="1">
+    <construction skill="cartmaking" minskill="5">
       <requirement type="log" quantity="10"/>
     </construction>
     <weapon siege="true" bash="true" missile="true" skill="catapult" offmod="0" defmod="0" reload="5">
diff --git a/res/core/weapons/crossbow.xml b/res/core/weapons/crossbow.xml
index 318628b81..c7bf4715d 100644
--- a/res/core/weapons/crossbow.xml
+++ b/res/core/weapons/crossbow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="crossbow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="1"/>
     </construction>
     <weapon armorpiercing="true" pierce="true" missile="true" skill="crossbow" offmod="0" defmod="0" reload="2">
diff --git a/res/core/weapons/greatbow.xml b/res/core/weapons/greatbow.xml
index 542bd41a8..10b270e55 100644
--- a/res/core/weapons/greatbow.xml
+++ b/res/core/weapons/greatbow.xml
@@ -2,7 +2,7 @@
 <resource name="greatbow">
   <item weight="100">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <modifier function="mod_elves_only"/>
       <requirement type="mallorn" quantity="2"/>
     </construction>
diff --git a/res/core/weapons/greatsword.xml b/res/core/weapons/greatsword.xml
index 481ff680c..cd48b8296 100644
--- a/res/core/weapons/greatsword.xml
+++ b/res/core/weapons/greatsword.xml
@@ -2,7 +2,7 @@
 <resource name="greatsword">
   <item weight="200" score="30">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="4" reqsize="1">
+    <construction skill="weaponsmithing" minskill="4">
       <requirement type="iron" quantity="2"/>
     </construction>
     <weapon cut="true" skill="melee" offmod="-1" defmod="-2">
diff --git a/res/core/weapons/halberd.xml b/res/core/weapons/halberd.xml
index bf3fb4af7..5025f4793 100644
--- a/res/core/weapons/halberd.xml
+++ b/res/core/weapons/halberd.xml
@@ -2,7 +2,7 @@
 <resource name="halberd">
   <item weight="200">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="2"/>
       <requirement type="iron" quantity="1"/>
     </construction>
diff --git a/res/core/weapons/laensword.xml b/res/core/weapons/laensword.xml
index 31ec8b9e6..3053d5f1b 100644
--- a/res/core/weapons/laensword.xml
+++ b/res/core/weapons/laensword.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laensword">
   <item weight="100" score="400">
-    <construction skill="weaponsmithing" minskill="8" reqsize="1">
+    <construction skill="weaponsmithing" minskill="8">
       <requirement type="laen" quantity="1"/>
     </construction>
     <weapon cut="true" skill="melee" offmod="1" defmod="1" magres="0.30">
diff --git a/res/core/weapons/lance.xml b/res/core/weapons/lance.xml
index 1271c48f9..abbb7f31f 100644
--- a/res/core/weapons/lance.xml
+++ b/res/core/weapons/lance.xml
@@ -2,7 +2,7 @@
 <resource name="lance">
   <item weight="200">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="2" reqsize="1">
+    <construction skill="weaponsmithing" minskill="2">
       <requirement type="log" quantity="2"/>
     </construction>
     <weapon pierce="true" skill="polearm" offmod="0" defmod="-2">
diff --git a/res/core/weapons/mallornbow.xml b/res/core/weapons/mallornbow.xml
index f61ea8e97..abdcc4810 100644
--- a/res/core/weapons/mallornbow.xml
+++ b/res/core/weapons/mallornbow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="mallornbow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="1"/>
     </construction>
     <weapon pierce="true" missile="true" skill="bow" offmod="0" defmod="0" reload="0" magres="0.15">
diff --git a/res/core/weapons/mallorncrossbow.xml b/res/core/weapons/mallorncrossbow.xml
index fb7be26c0..385720d8c 100644
--- a/res/core/weapons/mallorncrossbow.xml
+++ b/res/core/weapons/mallorncrossbow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="mallorncrossbow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="1"/>
     </construction>
     <weapon armorpiercing="true" pierce="true" missile="true" skill="crossbow" offmod="0" defmod="0" reload="2" magres="0.15">
diff --git a/res/core/weapons/mallornlance.xml b/res/core/weapons/mallornlance.xml
index 88973f3e0..0186143e4 100644
--- a/res/core/weapons/mallornlance.xml
+++ b/res/core/weapons/mallornlance.xml
@@ -2,7 +2,7 @@
 <resource name="mallornlance">
   <item weight="100">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="2"/>
     </construction>
     <weapon pierce="true" skill="polearm" minskill="5" offmod="0" defmod="0" magres="0.15">
diff --git a/res/core/weapons/mallornspear.xml b/res/core/weapons/mallornspear.xml
index 8c3782e4c..66d41a943 100644
--- a/res/core/weapons/mallornspear.xml
+++ b/res/core/weapons/mallornspear.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="mallornspear">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="1"/>
     </construction>
     <weapon pierce="true" skill="polearm" minskill="5" offmod="0" defmod="0" magres="0.15">
diff --git a/res/core/weapons/rep_crossbow.xml b/res/core/weapons/rep_crossbow.xml
index 1e550a190..66e3f9fc2 100644
--- a/res/core/weapons/rep_crossbow.xml
+++ b/res/core/weapons/rep_crossbow.xml
@@ -2,7 +2,7 @@
 <resource name="rep_crossbow">
   <item weight="100">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <modifier function="mod_dwarves_only"/>
       <requirement type="log" quantity="1"/>
       <requirement type="iron" quantity="1"/>
diff --git a/res/core/weapons/rustyaxe.xml b/res/core/weapons/rustyaxe.xml
index 5399de62d..2ff19570c 100644
--- a/res/core/weapons/rustyaxe.xml
+++ b/res/core/weapons/rustyaxe.xml
@@ -2,7 +2,7 @@
 <resource name="rustyaxe">
   <item weight="200">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="1"/>
       <requirement type="iron" quantity="1"/>
     </construction>
diff --git a/res/core/weapons/rustygreatsword.xml b/res/core/weapons/rustygreatsword.xml
index ac1385b11..7f21cce17 100644
--- a/res/core/weapons/rustygreatsword.xml
+++ b/res/core/weapons/rustygreatsword.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustygreatsword">
   <item weight="200" score="20">
-    <construction skill="weaponsmithing" minskill="4" reqsize="1">
+    <construction skill="weaponsmithing" minskill="4">
       <requirement type="iron" quantity="2"/>
     </construction>
     <weapon cut="true" skill="melee" offmod="-2" defmod="-3">
diff --git a/res/core/weapons/rustyhalberd.xml b/res/core/weapons/rustyhalberd.xml
index 4f237b989..c1b1f69a9 100644
--- a/res/core/weapons/rustyhalberd.xml
+++ b/res/core/weapons/rustyhalberd.xml
@@ -2,7 +2,7 @@
 <resource name="rustyhalberd">
   <item weight="200" score="20">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="iron" quantity="1"/>
       <requirement type="log" quantity="1"/>
     </construction>
diff --git a/res/core/weapons/rustysword.xml b/res/core/weapons/rustysword.xml
index f73dcd6e2..2a76c109b 100644
--- a/res/core/weapons/rustysword.xml
+++ b/res/core/weapons/rustysword.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustysword">
   <item weight="100" score="10">
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="iron" quantity="1"/>
     </construction>
     <weapon cut="true" skill="melee" offmod="-1" defmod="-1">
diff --git a/res/core/weapons/spear.xml b/res/core/weapons/spear.xml
index c6479707a..32a79b9a2 100644
--- a/res/core/weapons/spear.xml
+++ b/res/core/weapons/spear.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="spear">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="2" reqsize="1">
+    <construction skill="weaponsmithing" minskill="2">
       <requirement type="log" quantity="1"/>
     </construction>
     <weapon pierce="true" skill="polearm" offmod="0" defmod="0">
diff --git a/res/core/weapons/sword.xml b/res/core/weapons/sword.xml
index 0d3830e2e..4bd2ebdb1 100644
--- a/res/core/weapons/sword.xml
+++ b/res/core/weapons/sword.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="sword">
   <item weight="100" score="30">
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="iron" quantity="1"/>
     </construction>
     <weapon cut="true" skill="melee">
diff --git a/res/e3a/armor/chainmail.xml b/res/e3a/armor/chainmail.xml
index 39743d754..509df07e6 100644
--- a/res/e3a/armor/chainmail.xml
+++ b/res/e3a/armor/chainmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="chainmail">
   <item weight="200" score="90">
-    <construction skill="armorer" minskill="3" reqsize="1">
+    <construction skill="armorer" minskill="3">
       <requirement type="iron" quantity="2"/>
     </construction>
     <armor ac="2" penalty="0.10" projectile="0.0" magres="0.0"/>
diff --git a/res/e3a/armor/laenmail.xml b/res/e3a/armor/laenmail.xml
index d3b1dd533..f03add574 100644
--- a/res/e3a/armor/laenmail.xml
+++ b/res/e3a/armor/laenmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laenmail">
   <item weight="100" score="1000">
-    <construction skill="armorer" minskill="9" reqsize="1">
+    <construction skill="armorer" minskill="9">
       <requirement type="laen" quantity="2"/>
     </construction>
     <armor ac="3" penalty="0.0" projectile="0.10" magres="0.3" laen="yes" />
diff --git a/res/e3a/armor/laenshield.xml b/res/e3a/armor/laenshield.xml
index 1ce6216b2..8d003bccc 100644
--- a/res/e3a/armor/laenshield.xml
+++ b/res/e3a/armor/laenshield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="laenshield">
   <item weight="0" score="1000">
-    <construction skill="armorer" minskill="7" reqsize="1">
+    <construction skill="armorer" minskill="7">
       <requirement type="laen" quantity="1"/>
     </construction>
     <armor ac="1" penalty="-0.10" magres="0.3" laen="yes" shield="yes" />
diff --git a/res/e3a/armor/plate.xml b/res/e3a/armor/plate.xml
index 550e83173..29cabbf1a 100644
--- a/res/e3a/armor/plate.xml
+++ b/res/e3a/armor/plate.xml
@@ -2,7 +2,7 @@
 <resource name="plate">
   <item weight="400" score="150">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="armorer" minskill="4" reqsize="1">
+    <construction skill="armorer" minskill="4">
       <requirement type="iron" quantity="4"/>
     </construction>
     <armor ac="3" penalty="0.15" projectile="0.10" magres="0.0"/>
diff --git a/res/e3a/armor/rustychainmail.xml b/res/e3a/armor/rustychainmail.xml
index ac2628c62..361564c76 100644
--- a/res/e3a/armor/rustychainmail.xml
+++ b/res/e3a/armor/rustychainmail.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustychainmail">
   <item weight="200" score="30">
-    <construction skill="armorer" minskill="3" reqsize="1">
+    <construction skill="armorer" minskill="3">
       <requirement type="iron" quantity="3"/>
     </construction>
     <armor ac="1" penalty="0.20" magres="0.0"/>
diff --git a/res/e3a/armor/rustyshield.xml b/res/e3a/armor/rustyshield.xml
index 2becae180..d9d8a54ef 100644
--- a/res/e3a/armor/rustyshield.xml
+++ b/res/e3a/armor/rustyshield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="rustyshield">
   <item weight="100" score="10">
-    <construction skill="armorer" minskill="2" reqsize="1">
+    <construction skill="armorer" minskill="2">
       <requirement type="iron" quantity="1"/>
     </construction>
     <armor ac="0" penalty="-0.05" magres="0.0" shield="yes"/>
diff --git a/res/e3a/armor/scale.xml b/res/e3a/armor/scale.xml
index 809d08bca..7039b4008 100644
--- a/res/e3a/armor/scale.xml
+++ b/res/e3a/armor/scale.xml
@@ -2,7 +2,7 @@
 <resource name="scale">
   <item weight="300" score="150">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="armorer" minskill="5" reqsize="1">
+    <construction skill="armorer" minskill="5">
       <modifier function="mod_dwarves_only"/>
       <requirement type="iron" quantity="2"/>
     </construction>
diff --git a/res/e3a/armor/shield.xml b/res/e3a/armor/shield.xml
index 9b4ad9174..5770711e2 100644
--- a/res/e3a/armor/shield.xml
+++ b/res/e3a/armor/shield.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="shield">
   <item weight="100" score="30">
-    <construction skill="armorer" minskill="2" reqsize="1">
+    <construction skill="armorer" minskill="2">
       <requirement type="iron" quantity="1"/>
     </construction>
     <armor ac="0" penalty="-0.10" magres="0.0" shield="yes"/>
diff --git a/res/e3a/armor/towershield.xml b/res/e3a/armor/towershield.xml
index 5a7edcabe..e80c03523 100644
--- a/res/e3a/armor/towershield.xml
+++ b/res/e3a/armor/towershield.xml
@@ -2,7 +2,7 @@
 <resource name="towershield">
   <item weight="200" score="60">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="armorer" minskill="4" reqsize="1">
+    <construction skill="armorer" minskill="4">
       <modifier function="mod_dwarves_only"/>
       <requirement type="iron" quantity="1"/>
     </construction>
diff --git a/res/e3a/buildings.xml b/res/e3a/buildings.xml
index e8ffe2102..8ca30d27d 100644
--- a/res/e3a/buildings.xml
+++ b/res/e3a/buildings.xml
@@ -7,20 +7,20 @@
     <function name="name" value="fort_name"/>
     <function name="protection" value="building_protection"/>
     <function name="taxes" value="lua_building_taxes"/>
-    <construction skill="building" minskill="1" maxsize="5" reqsize="1" defense_bonus="0">
+    <construction skill="building" minskill="1" maxsize="5" defense_bonus="0">
+      <requirement type="log" quantity="1"/>
+    </construction>
+    <construction skill="building" minskill="2" maxsize="5" defense_bonus="1">
+      <requirement type="log" quantity="1"/>
+    </construction>
+    <construction skill="building" minskill="2" defense_bonus="2">
       <requirement type="log" quantity="1"/>
     </construction>
-	  <construction skill="building" minskill="2" maxsize="5" reqsize="1" defense_bonus="1">
-		  <requirement type="log" quantity="1"/>
-	  </construction>
-	  <construction skill="building" minskill="2" reqsize="1" defense_bonus="2">
-		  <requirement type="log" quantity="1"/>
-	  </construction>
   </building>
 
   <building name="market" capacity="1" maxsize="10">
     <maintenance type="money" amount="200" vital="yes"/>
-    <construction skill="building" minskill="3" reqsize="1">
+    <construction skill="building" minskill="3">
       <requirement type="log" quantity="1"/>
       <requirement type="stone" quantity="1"/>
     </construction>
diff --git a/res/e3a/items.xml b/res/e3a/items.xml
index 706bd0d67..7d7e6b286 100644
--- a/res/e3a/items.xml
+++ b/res/e3a/items.xml
@@ -71,7 +71,7 @@
 
   <resource name="charger">
     <item big="yes" weight="5000" score="10" capacity="7000" animal="yes">
-      <construction skill="training" minskill="4" reqsize="1">
+      <construction skill="training" minskill="4">
         <requirement type="money" quantity="200"/>
         <requirement type="iron" quantity="1"/>
         <requirement type="horse" quantity="1"/>
diff --git a/res/e3a/resources/iron.xml b/res/e3a/resources/iron.xml
index 3856c045d..b245da358 100644
--- a/res/e3a/resources/iron.xml
+++ b/res/e3a/resources/iron.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="iron" limited="yes" material="rm_iron">
   <item weight="500" score="10">
-    <construction skill="mining" minskill="1" reqsize="1"/>
+    <construction skill="mining" minskill="1"/>
   </item>
   <resourcelimit>
     <modifier building="mine" type="skill" value="1"/>
diff --git a/res/e3a/resources/stone.xml b/res/e3a/resources/stone.xml
index 854003c86..746b79c21 100644
--- a/res/e3a/resources/stone.xml
+++ b/res/e3a/resources/stone.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="stone" limited="yes" material="rm_stone">
   <item weight="6000" score="10" big="yes">
-    <construction skill="quarrying" minskill="1" reqsize="1"/>
+    <construction skill="quarrying" minskill="1"/>
   </item>
   <resourcelimit>
     <modifier building="quarry" type="skill" value="1"/>
diff --git a/res/e3a/ships.xml b/res/e3a/ships.xml
index b8c5f0197..291900a3b 100644
--- a/res/e3a/ships.xml
+++ b/res/e3a/ships.xml
@@ -10,7 +10,7 @@
     <coast terrain="glacier"/>
     <coast terrain="volcano"/>
     <coast terrain="activevolcano"/>
-    <construction skill="shipcraft" minskill="1" maxsize="3" reqsize="1">
+    <construction skill="shipcraft" minskill="1" maxsize="3">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -20,7 +20,7 @@
     <coast terrain="packice"/>
     <coast terrain="swamp"/>
     <coast terrain="desert"/>
-    <construction skill="shipcraft" minskill="1" maxsize="10" reqsize="1">
+    <construction skill="shipcraft" minskill="1" maxsize="10">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -35,7 +35,7 @@
     <coast terrain="glacier"/>
     <coast terrain="volcano"/>
     <coast terrain="activevolcano"/>
-    <construction skill="shipcraft" minskill="2" maxsize="10" reqsize="1">
+    <construction skill="shipcraft" minskill="2" maxsize="10">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -50,7 +50,7 @@
     <coast terrain="glacier"/>
     <coast terrain="volcano"/>
     <coast terrain="activevolcano"/>
-    <construction skill="shipcraft" minskill="2" maxsize="10" reqsize="1">
+    <construction skill="shipcraft" minskill="2" maxsize="10">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -66,7 +66,7 @@
     <coast terrain="glacier"/>
     <coast terrain="volcano"/>
     <coast terrain="activevolcano"/>
-    <construction skill="shipcraft" minskill="6" maxsize="10" reqsize="1">
+    <construction skill="shipcraft" minskill="6" maxsize="10">
       <requirement type="mallorn" quantity="1"/>
       <requirement type="money" quantity="100"/>
     </construction>
@@ -75,7 +75,7 @@
   <ship name="catamaran" range="7" storm="0.25" damage="1.00" cabins="22" cargo="10000" cptskill="7" minskill="1" sumskill="20" opensea="yes">
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="8" maxsize="30" reqsize="1">
+    <construction skill="shipcraft" minskill="8" maxsize="30">
       <requirement type="mallorn" quantity="1"/>
       <requirement type="money" quantity="100"/>
     </construction>
@@ -85,7 +85,7 @@
   <ship name="cog" range="4" storm="0.50" damage="1.00" cabins="50" cargo="200000" cptskill="4" minskill="1" sumskill="20" opensea="yes">
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="4" maxsize="100" reqsize="1">
+    <construction skill="shipcraft" minskill="4" maxsize="100">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -93,7 +93,7 @@
   <ship name="caravel" range="4" storm="0.50" damage="1.00" cabins="150" cargo="600000" cptskill="6" minskill="1" sumskill="30" opensea="yes">
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="6" maxsize="300" reqsize="1">
+    <construction skill="shipcraft" minskill="6" maxsize="300">
       <requirement type="log" quantity="1"/>
     </construction>
   </ship>
@@ -103,7 +103,7 @@
     <modifier type="defense" value="+2"/>
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="5" maxsize="100" reqsize="1">
+    <construction skill="shipcraft" minskill="5" maxsize="100">
       <requirement type="log" quantity="1"/>
       <requirement type="money" quantity="10"/>
     </construction>
@@ -113,7 +113,7 @@
     <modifier type="defense" value="+2"/>
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="7" maxsize="300" reqsize="1">
+    <construction skill="shipcraft" minskill="7" maxsize="300">
       <requirement type="log" quantity="1"/>
       <requirement type="money" quantity="10"/>
     </construction>
@@ -125,7 +125,7 @@
     <modifier type="tactics" factor="2.00"/>
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="5" maxsize="100" reqsize="1">
+    <construction skill="shipcraft" minskill="5" maxsize="100">
       <requirement type="log" quantity="1"/>
       <requirement type="money" quantity="10"/>
     </construction>
@@ -136,7 +136,7 @@
     <modifier type="tactics" factor="2.00"/>
     <coast terrain="plain"/>
     <coast terrain="packice"/>
-    <construction skill="shipcraft" minskill="7" maxsize="300" reqsize="1">
+    <construction skill="shipcraft" minskill="7" maxsize="300">
       <requirement type="log" quantity="1"/>
       <requirement type="money" quantity="10"/>
     </construction>
diff --git a/res/e3a/weapons/crossbow.xml b/res/e3a/weapons/crossbow.xml
index 57535a070..7b2ed743c 100644
--- a/res/e3a/weapons/crossbow.xml
+++ b/res/e3a/weapons/crossbow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="crossbow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="1"/>
     </construction>
     <weapon armorpiercing="true" pierce="true" missile="true" skill="crossbow" offmod="0" defmod="0" reload="2">
diff --git a/res/e3a/weapons/greatbow.xml b/res/e3a/weapons/greatbow.xml
index ba91f54de..7f08427c8 100644
--- a/res/e3a/weapons/greatbow.xml
+++ b/res/e3a/weapons/greatbow.xml
@@ -6,7 +6,7 @@
 <resource name="greatbow">
   <item weight="100">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <modifier function="mod_elves_only"/>
       <requirement type="mallorn" quantity="2"/>
     </construction>
diff --git a/res/e3a/weapons/greatsword.xml b/res/e3a/weapons/greatsword.xml
index 5fc1c9042..5a199321d 100644
--- a/res/e3a/weapons/greatsword.xml
+++ b/res/e3a/weapons/greatsword.xml
@@ -4,7 +4,7 @@
 -->
 <resource name="greatsword">
   <item weight="200" score="30">
-    <construction skill="weaponsmithing" minskill="4" reqsize="1">
+    <construction skill="weaponsmithing" minskill="4">
       <requirement type="iron" quantity="2"/>
     </construction>
     <weapon useshield="false" cut="true" skill="melee" offmod="-1" defmod="-2" horse="false">
diff --git a/res/e3a/weapons/halberd.xml b/res/e3a/weapons/halberd.xml
index edb933701..2c11b62fc 100644
--- a/res/e3a/weapons/halberd.xml
+++ b/res/e3a/weapons/halberd.xml
@@ -5,7 +5,7 @@
 <resource name="halberd">
   <item weight="200">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="log" quantity="2"/>
       <requirement type="iron" quantity="1"/>
     </construction>
diff --git a/res/e3a/weapons/laensword.xml b/res/e3a/weapons/laensword.xml
index 13ebbf03e..50f824e8c 100644
--- a/res/e3a/weapons/laensword.xml
+++ b/res/e3a/weapons/laensword.xml
@@ -4,7 +4,7 @@
 -->
 <resource name="laensword">
   <item weight="100" score="400">
-    <construction skill="weaponsmithing" minskill="8" reqsize="1">
+    <construction skill="weaponsmithing" minskill="8">
       <requirement type="laen" quantity="1"/>
     </construction>
     <weapon cut="true" skill="melee" offmod="1" defmod="1" magres="0.30">
diff --git a/res/e3a/weapons/mallorncrossbow.xml b/res/e3a/weapons/mallorncrossbow.xml
index 920ae553f..86991bc10 100644
--- a/res/e3a/weapons/mallorncrossbow.xml
+++ b/res/e3a/weapons/mallorncrossbow.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <resource name="mallorncrossbow">
   <item weight="100">
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="1"/>
     </construction>
     <weapon armorpiercing="true" pierce="true" missile="true" skill="crossbow" offmod="0" defmod="0" reload="2" magres="0.15">
diff --git a/res/e3a/weapons/mallornlance.xml b/res/e3a/weapons/mallornlance.xml
index 6355f5780..1fcad08c8 100644
--- a/res/e3a/weapons/mallornlance.xml
+++ b/res/e3a/weapons/mallornlance.xml
@@ -2,7 +2,7 @@
 <resource name="mallornlance">
   <item weight="100">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="5" reqsize="1">
+    <construction skill="weaponsmithing" minskill="5">
       <requirement type="mallorn" quantity="2"/>
     </construction>
     <weapon pierce="true" skill="polearm" minskill="5" offmod="0" defmod="0" magres="0.15">
diff --git a/res/e3a/weapons/rustygreatsword.xml b/res/e3a/weapons/rustygreatsword.xml
index 818fac553..607f16a6a 100644
--- a/res/e3a/weapons/rustygreatsword.xml
+++ b/res/e3a/weapons/rustygreatsword.xml
@@ -4,7 +4,7 @@
 -->
 <resource name="rustygreatsword">
   <item weight="200" score="20">
-    <construction skill="weaponsmithing" minskill="4" reqsize="1">
+    <construction skill="weaponsmithing" minskill="4">
       <requirement type="iron" quantity="2"/>
     </construction>
     <weapon useshield="false" cut="true" skill="melee" offmod="-2" defmod="-3" horse="false">
diff --git a/res/e3a/weapons/rustyhalberd.xml b/res/e3a/weapons/rustyhalberd.xml
index bab849b49..ed25d5db7 100644
--- a/res/e3a/weapons/rustyhalberd.xml
+++ b/res/e3a/weapons/rustyhalberd.xml
@@ -5,7 +5,7 @@
 <resource name="rustyhalberd">
   <item weight="200" score="20">
     <function name="canuse" value="lua_canuse_item"/>
-    <construction skill="weaponsmithing" minskill="3" reqsize="1">
+    <construction skill="weaponsmithing" minskill="3">
       <requirement type="iron" quantity="1"/>
       <requirement type="log" quantity="1"/>
     </construction>
diff --git a/res/ships/boat.xml b/res/ships/boat.xml
index 91852de92..551fea702 100644
--- a/res/ships/boat.xml
+++ b/res/ships/boat.xml
@@ -10,7 +10,7 @@
   <coast terrain="activevolcano"/>
   <coast terrain="iceberg_sleep"/>
   <coast terrain="iceberg"/>
-  <construction skill="shipcraft" minskill="1" maxsize="5" reqsize="1">
+  <construction skill="shipcraft" minskill="1" maxsize="5">
     <requirement type="log" quantity="1"/>
   </construction>
 </ship>
diff --git a/src/kernel/xmlreader.c b/src/kernel/xmlreader.c
index f4e5fd751..da8014d67 100644
--- a/src/kernel/xmlreader.c
+++ b/src/kernel/xmlreader.c
@@ -169,7 +169,7 @@ construction ** consPtr)
         con->skill = sk;
         con->maxsize = xml_ivalue(node, "maxsize", -1);
         con->minskill = xml_ivalue(node, "minskill", -1);
-        con->reqsize = xml_ivalue(node, "reqsize", -1);
+        con->reqsize = xml_ivalue(node, "reqsize", 1);
         con->defense_bonus = xml_ivalue(node, "defense_bonus", 0);
         con->close_combat_bonus = xml_ivalue(node, "close_combat_bonus", 0);
         con->ranged_bonus = xml_ivalue(node, "ranged_bonus", 0);