diff --git a/CHANGELOG b/CHANGELOG
index e621ad2388..914b091344 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -34,6 +34,7 @@ NEW:
 		Removed the build radius restrictions.
 		Added the BLOXXMAS terrain tiles from the 1.06 patch.
 		Saboteur can now plant C4 on vehicles.
+		Added concrete plates and building weathering.
 	Red Alert:
 		Chinook rotors now counter-rotate.
 		Transports will now open their doors when at shore.
diff --git a/OpenRA.Mods.D2k/DamagedWithoutFoundation.cs b/OpenRA.Mods.D2k/DamagedWithoutFoundation.cs
new file mode 100644
index 0000000000..aef6193436
--- /dev/null
+++ b/OpenRA.Mods.D2k/DamagedWithoutFoundation.cs
@@ -0,0 +1,75 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Linq;
+using OpenRA.GameRules;
+using OpenRA.Mods.RA.Buildings;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.Cnc
+{
+	class DamagedWithoutFoundationInfo : ITraitInfo, Requires<HealthInfo>
+	{
+		[WeaponReference]
+		public readonly string Weapon = "weathering";
+		public readonly string[] SafeTerrain = { "Concrete" };
+		public readonly int DamageThreshold = 50;
+
+		public object Create(ActorInitializer init) { return new DamagedWithoutFoundation(init.self, this); }
+	}
+
+	class DamagedWithoutFoundation : ITick, ISync, INotifyAddedToWorld
+	{
+		readonly DamagedWithoutFoundationInfo info;
+		readonly Health health;
+		readonly WeaponInfo weapon;
+
+		[Sync] int damageThreshold = 100;
+		[Sync] int damageTicks;
+
+		public DamagedWithoutFoundation(Actor self, DamagedWithoutFoundationInfo info)
+		{
+			this.info = info;
+			health = self.Trait<Health>();
+			weapon = Rules.Weapons[info.Weapon.ToLowerInvariant()];
+		}
+
+		public void AddedToWorld(Actor self)
+		{
+			var safeTiles = 0;
+			var totalTiles = 0;
+			foreach (var kv in self.OccupiesSpace.OccupiedCells())
+			{
+				totalTiles++;
+				if (info.SafeTerrain.Contains(self.World.GetTerrainType(kv.First)))
+					safeTiles++;
+			}
+
+			damageThreshold = (info.DamageThreshold * health.MaxHP + (100 - info.DamageThreshold) * safeTiles * health.MaxHP / totalTiles) / 100;
+
+			// Actors start with maximum damage applied
+			var delta = health.HP - damageThreshold;
+			if (delta > 0)
+				health.InflictDamage(self, self.World.WorldActor, delta, null, false);
+		}
+
+		public void Tick(Actor self)
+		{
+			if (health.HP <= damageThreshold || --damageTicks > 0)
+				return;
+
+			foreach (var w in weapon.Warheads)
+				health.InflictDamage(self, self.World.WorldActor, w.Damage, w, false);
+
+			damageTicks = weapon.ROF;
+		}
+	}
+}
diff --git a/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj b/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
index 3d78f92267..8a730f4322 100644
--- a/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
+++ b/OpenRA.Mods.D2k/OpenRA.Mods.D2k.csproj
@@ -81,6 +81,7 @@
     <Compile Include="PaletteFromR8.cs" />
     <Compile Include="D2kResourceLayer.cs" />
     <Compile Include="FogPaletteFromR8.cs" />
+    <Compile Include="DamagedWithoutFoundation.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
diff --git a/OpenRA.Mods.RA/Buildings/Bib.cs b/OpenRA.Mods.RA/Buildings/Bib.cs
index 6f7dd14d70..87d0364135 100755
--- a/OpenRA.Mods.RA/Buildings/Bib.cs
+++ b/OpenRA.Mods.RA/Buildings/Bib.cs
@@ -23,31 +23,40 @@ namespace OpenRA.Mods.RA.Buildings
 		public object Create(ActorInitializer init) { return new Bib(init.self, this); }
 	}
 
-	public class Bib : IRender
+	public class Bib : IRender, INotifyAddedToWorld
 	{
 		readonly BibInfo info;
-		readonly List<AnimationWithOffset> tiles;
+		List<AnimationWithOffset> tiles;
 
 		public Bib(Actor self, BibInfo info)
 		{
 			this.info = info;
+		}
 
+		public void AddedToWorld(Actor self)
+		{
 			var rs = self.Trait<RenderSprites>();
 			var building = self.Info.Traits.Get<BuildingInfo>();
 			var width = building.Dimensions.X;
 			var bibOffset = building.Dimensions.Y - 1;
 			var centerOffset = FootprintUtils.CenterOffset(building);
-
+			var location = self.Location;
 			tiles = new List<AnimationWithOffset>();
 			for (var i = 0; i < 2*width; i++)
 			{
 				var index = i;
 				var anim = new Animation(rs.GetImage(self));
-				anim.PlayFetchIndex(info.Sequence, () => index);
+				var cellOffset = new CVec(i % width, i / width + bibOffset);
+
+				// Some mods may define terrain-specific bibs
+				var terrain = self.World.GetTerrainType(location + cellOffset);
+				var testSequence = info.Sequence + "-" + terrain;
+				var sequence = anim.HasSequence(testSequence) ? testSequence : info.Sequence;
+				anim.PlayFetchIndex(sequence, () => index);
 				anim.IsDecoration = true;
 
 				// Z-order is one set to the top of the footprint
-				var offset = new CVec(i % width, i / width + bibOffset).ToWVec() - centerOffset;
+				var offset = cellOffset.ToWVec() - centerOffset;
 				tiles.Add(new AnimationWithOffset(anim, () => offset, null, -(offset.Y + centerOffset.Y + 512)));
 			}
 		}
diff --git a/OpenRA.Mods.RA/Buildings/Building.cs b/OpenRA.Mods.RA/Buildings/Building.cs
index 60a3490dd5..5ead5ea237 100755
--- a/OpenRA.Mods.RA/Buildings/Building.cs
+++ b/OpenRA.Mods.RA/Buildings/Building.cs
@@ -32,6 +32,7 @@ namespace OpenRA.Mods.RA.Buildings
 		public readonly string Footprint = "x";
 		public readonly int2 Dimensions = new int2(1, 1);
 		public readonly bool RequiresBaseProvider = false;
+		public readonly bool AllowInvalidPlacement = false;
 
 		public readonly string[] BuildSounds = {"placbldg.aud", "build5.aud"};
 		public readonly string[] SellSounds = {"cashturn.aud"};
@@ -81,7 +82,7 @@ namespace OpenRA.Mods.RA.Buildings
 				{
 				    var pos = new CPos(x, y);
 					var at = bi.GetBuildingAt(pos);
-					if (at == null || !at.HasTrait<GivesBuildableArea>())
+					if (at == null || !at.IsInWorld || !at.HasTrait<GivesBuildableArea>())
 						continue;
 
 					if (at.Owner == p || (allyBuildRadius && at.Owner.Stances[p] == Stance.Ally))
diff --git a/OpenRA.Mods.RA/Buildings/BuildingInfluence.cs b/OpenRA.Mods.RA/Buildings/BuildingInfluence.cs
index be31f43dd2..3c1a8c1254 100755
--- a/OpenRA.Mods.RA/Buildings/BuildingInfluence.cs
+++ b/OpenRA.Mods.RA/Buildings/BuildingInfluence.cs
@@ -1,6 +1,6 @@
 #region Copyright & License Information
 /*
- * Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
  * This file is part of OpenRA, which is free software. It is made
  * available to you under the terms of the GNU General Public License
  * as published by the Free Software Foundation. For more information,
@@ -14,7 +14,7 @@ namespace OpenRA.Mods.RA.Buildings
 {
 	public class BuildingInfluenceInfo : ITraitInfo
 	{
-		public object Create( ActorInitializer init ) { return new BuildingInfluence( init.world ); }
+		public object Create(ActorInitializer init) { return new BuildingInfluence(init.world); }
 	}
 
 	public class BuildingInfluence
@@ -22,30 +22,40 @@ namespace OpenRA.Mods.RA.Buildings
 		Actor[,] influence;
 		Map map;
 
-		public BuildingInfluence( World world )
+		public BuildingInfluence(World world)
 		{
 			map = world.Map;
 
 			influence = new Actor[map.MapSize.X, map.MapSize.Y];
 
-			world.ActorAdded +=
-				a => { if (a.HasTrait<Building>())
-					ChangeInfluence(a, a.Trait<Building>(), true); };
-			world.ActorRemoved +=
-				a => { if (a.HasTrait<Building>())
-					ChangeInfluence(a, a.Trait<Building>(), false); };
-		}
+			world.ActorAdded +=	a =>
+			{
+				var b = a.TraitOrDefault<Building>();
+				if (b == null)
+					return;
 
-		void ChangeInfluence( Actor a, Building building, bool isAdd )
-		{
-			foreach( var u in FootprintUtils.Tiles( a.Info.Name, a.Info.Traits.Get<BuildingInfo>(), a.Location ) )
-				if( map.IsInMap( u ) )
-					influence[ u.X, u.Y ] = isAdd ? a : null;
+				foreach (var u in FootprintUtils.Tiles(a.Info.Name, b.Info, a.Location))
+					if (map.IsInMap(u) && influence[u.X, u.Y] == null)
+						influence[u.X, u.Y] = a;
+			};
+
+			world.ActorRemoved += a =>
+			{
+				var b = a.TraitOrDefault<Building>();
+				if (b == null)
+					return;
+
+				foreach (var u in FootprintUtils.Tiles(a.Info.Name, b.Info, a.Location))
+					if (map.IsInMap(u) && influence[u.X, u.Y] == a)
+						influence[u.X, u.Y] = null;
+			};
 		}
 
 		public Actor GetBuildingAt(CPos cell)
 		{
-			if (!map.IsInMap(cell)) return null;
+			if (!map.IsInMap(cell))
+				return null;
+
 			return influence[cell.X, cell.Y];
 		}
 	}
diff --git a/OpenRA.Mods.RA/Buildings/LaysTerrain.cs b/OpenRA.Mods.RA/Buildings/LaysTerrain.cs
new file mode 100755
index 0000000000..c7455458f9
--- /dev/null
+++ b/OpenRA.Mods.RA/Buildings/LaysTerrain.cs
@@ -0,0 +1,88 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.FileFormats;
+using OpenRA.Graphics;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA.Buildings
+{
+	public class LaysTerrainInfo : ITraitInfo, Requires<BuildingInfo>, Requires<RenderSpritesInfo>
+	{
+		[Desc("The terrain template to place. If the template is PickAny, then" +
+			"the actor footprint will be filled with this tile.")]
+		public readonly ushort Template = 0;
+
+		[Desc("The terrain types that this template will be placed on")]
+		public readonly string[] TerrainTypes = {};
+
+		[Desc("Offset relative to the actor TopLeft. Not used if the template is PickAny")]
+		public readonly CVec Offset = CVec.Zero;
+
+		public object Create(ActorInitializer init) { return new LaysTerrain(init.self, this); }
+	}
+
+	public class LaysTerrain : INotifyAddedToWorld
+	{
+		readonly LaysTerrainInfo info;
+		readonly BuildableTerrainLayer layer;
+		readonly BuildingInfluence bi;
+		readonly TileTemplate template;
+
+		public LaysTerrain(Actor self, LaysTerrainInfo info)
+		{
+			this.info = info;
+			layer = self.World.WorldActor.Trait<BuildableTerrainLayer>();
+			bi = self.World.WorldActor.Trait<BuildingInfluence>();
+			template = self.World.TileSet.Templates[info.Template];
+		}
+
+		public void AddedToWorld(Actor self)
+		{
+			if (template.PickAny)
+			{
+				// Fill the footprint with random variants
+				foreach (var c in FootprintUtils.Tiles(self))
+				{
+					// Only place on allowed terrain types
+					if (!info.TerrainTypes.Contains(self.World.GetTerrainType(c)))
+						continue;
+
+					// Don't place under other buildings or custom terrain
+					if (bi.GetBuildingAt(c) != self || self.World.Map.CustomTerrain[c.X, c.Y] != null)
+						continue;
+
+					var index = template.Tiles.Keys.Random(Game.CosmeticRandom);
+					layer.AddTile(c, new TileReference<ushort, byte>(template.Id, index));
+				}
+
+				return;
+			}
+
+			var origin = self.Location + info.Offset;
+			foreach (var i in template.Tiles.Keys)
+			{
+				var c = origin + new CVec(i % template.Size.X, i / template.Size.X);
+
+				// Only place on allowed terrain types
+				if (!info.TerrainTypes.Contains(self.World.GetTerrainType(c)))
+					continue;
+
+				// Don't place under other buildings or custom terrain
+				if (bi.GetBuildingAt(c) != self || self.World.Map.CustomTerrain[c.X, c.Y] != null)
+					continue;
+
+				layer.AddTile(c, new TileReference<ushort, byte>(template.Id, i));
+			}
+		}
+	}
+}
diff --git a/OpenRA.Mods.RA/Buildings/Util.cs b/OpenRA.Mods.RA/Buildings/Util.cs
index eda571bde6..acea2349b5 100755
--- a/OpenRA.Mods.RA/Buildings/Util.cs
+++ b/OpenRA.Mods.RA/Buildings/Util.cs
@@ -31,6 +31,9 @@ namespace OpenRA.Mods.RA.Buildings
 
 		public static bool CanPlaceBuilding(this World world, string name, BuildingInfo building, CPos topLeft, Actor toIgnore)
 		{
+			if (building.AllowInvalidPlacement)
+				return true;
+
 			var res = world.WorldActor.Trait<ResourceLayer>();
 			return FootprintUtils.Tiles(name, building, topLeft).All(
 				t => world.Map.IsInMap(t.X, t.Y) && res.GetResource(t) == null &&
diff --git a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
index e88021fff3..c19a7a5305 100644
--- a/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
+++ b/OpenRA.Mods.RA/OpenRA.Mods.RA.csproj
@@ -482,6 +482,9 @@
     <Compile Include="Widgets\Logic\GameTimerLogic.cs" />
     <Compile Include="Immobile.cs" />
     <Compile Include="Widgets\Logic\ReplayControlBarLogic.cs" />
+    <Compile Include="World\BuildableTerrainLayer.cs" />
+    <Compile Include="Buildings\LaysTerrain.cs" />
+    <Compile Include="RemoveImmediately.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenRA.FileFormats\OpenRA.FileFormats.csproj">
diff --git a/OpenRA.Mods.RA/Orders/PlaceBuildingOrderGenerator.cs b/OpenRA.Mods.RA/Orders/PlaceBuildingOrderGenerator.cs
index 3c5d95ddb1..17e012eb64 100644
--- a/OpenRA.Mods.RA/Orders/PlaceBuildingOrderGenerator.cs
+++ b/OpenRA.Mods.RA/Orders/PlaceBuildingOrderGenerator.cs
@@ -90,11 +90,17 @@ namespace OpenRA.Mods.RA.Orders
 			{
 				if (!initialized)
 				{
-					var rbi = Rules.Info[Building].Traits.Get<RenderBuildingInfo>();
-					var palette = rbi.Palette ?? (Producer.Owner != null ?
-					                              rbi.PlayerPalette + Producer.Owner.InternalName : null);
+					var rbi = Rules.Info[Building].Traits.GetOrDefault<RenderBuildingInfo>();
+					if (rbi == null)
+						preview = new IRenderable[0];
+					else
+					{
+						var palette = rbi.Palette ?? (Producer.Owner != null ?
+							rbi.PlayerPalette + Producer.Owner.InternalName : null);
+
+						preview = rbi.RenderPreview(Rules.Info[Building], wr.Palette(palette));
+					}
 
-					preview = rbi.RenderPreview(Rules.Info[Building], wr.Palette(palette));
 					initialized = true;
 				}
 
diff --git a/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs b/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs
index 8a9b02d40f..273eeec2c4 100644
--- a/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs
+++ b/OpenRA.Mods.RA/Player/BaseAttackNotifier.cs
@@ -49,6 +49,9 @@ namespace OpenRA.Mods.RA
 			if (e.Attacker.Owner == self.Owner)
 				return;
 
+			if (e.Attacker == self.World.WorldActor)
+				return;
+
 			if (e.Attacker.Owner.IsAlliedWith(self.Owner) && e.Damage <= 0)
 				return;
 
diff --git a/OpenRA.Mods.RA/RemoveImmediately.cs b/OpenRA.Mods.RA/RemoveImmediately.cs
new file mode 100644
index 0000000000..e3181a4b14
--- /dev/null
+++ b/OpenRA.Mods.RA/RemoveImmediately.cs
@@ -0,0 +1,22 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using OpenRA.FileFormats;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	public class RemoveImmediatelyInfo : TraitInfo<RemoveImmediately> {}
+
+	public class RemoveImmediately : INotifyAddedToWorld
+	{
+		public void AddedToWorld(Actor self) { self.Destroy(); }
+	}
+}
diff --git a/OpenRA.Mods.RA/World/BuildableTerrainLayer.cs b/OpenRA.Mods.RA/World/BuildableTerrainLayer.cs
new file mode 100644
index 0000000000..b8be9a45d4
--- /dev/null
+++ b/OpenRA.Mods.RA/World/BuildableTerrainLayer.cs
@@ -0,0 +1,82 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using OpenRA.FileFormats;
+using OpenRA.Graphics;
+using OpenRA.Mods.RA.Effects;
+using OpenRA.Traits;
+
+namespace OpenRA.Mods.RA
+{
+	public class BuildableTerrainLayerInfo : TraitInfo<BuildableTerrainLayer> { }
+	public class BuildableTerrainLayer : IRenderOverlay, IWorldLoaded, ITickRender
+	{
+		Dictionary<CPos, Sprite> tiles;
+		Dictionary<CPos, Sprite> dirty;
+		Theater theater;
+		TileSet tileset;
+		Map map;
+
+		public void WorldLoaded(World w, WorldRenderer wr)
+		{
+			theater = wr.Theater;
+			tileset = w.TileSet;
+			map = w.Map;
+			tiles = new Dictionary<CPos, Sprite>();
+			dirty = new Dictionary<CPos, Sprite>();
+		}
+
+		public void AddTile(CPos cell, TileReference<ushort, byte> tile)
+		{
+			map.CustomTerrain[cell.X, cell.Y] = tileset.GetTerrainType(tile);
+
+			// Terrain tiles define their origin at the topleft
+			var s = theater.TileSprite(tile);
+			dirty[cell] = new Sprite(s.sheet, s.bounds, float2.Zero, s.channel, s.blendMode);
+		}
+
+		public void TickRender(WorldRenderer wr, Actor self)
+		{
+			var remove = new List<CPos>();
+			foreach (var kv in dirty)
+			{
+				if (!self.World.FogObscures(kv.Key))
+				{
+					tiles[kv.Key] = kv.Value;
+					remove.Add(kv.Key);
+				}
+			}
+
+			foreach (var r in remove)
+				dirty.Remove(r);
+		}
+
+		public void Render(WorldRenderer wr)
+		{
+			var cliprect = wr.Viewport.CellBounds;
+			var pal = wr.Palette("terrain");
+
+			foreach (var kv in tiles)
+			{
+				if (!cliprect.Contains(kv.Key.X, kv.Key.Y))
+					continue;
+
+				if (wr.world.ShroudObscures(kv.Key))
+					continue;
+
+				new SpriteRenderable(kv.Value, kv.Key.CenterPosition,
+					WVec.Zero, -511, pal, 1f, true).Render(wr);
+			}
+		}
+	}
+}
diff --git a/mods/d2k/rules/defaults.yaml b/mods/d2k/rules/defaults.yaml
index ebebf2ec35..84e67a1cd0 100644
--- a/mods/d2k/rules/defaults.yaml
+++ b/mods/d2k/rules/defaults.yaml
@@ -263,4 +263,4 @@
 	Huntable:
 	LuaScriptEvents:
 	Demolishable:
-
+	DamagedWithoutFoundation:
diff --git a/mods/d2k/rules/structures.yaml b/mods/d2k/rules/structures.yaml
index 5d3ecb80f3..9af5cca8d4 100644
--- a/mods/d2k/rules/structures.yaml
+++ b/mods/d2k/rules/structures.yaml
@@ -1,3 +1,42 @@
+^CONCRETE:
+	Building:
+		Adjacent: 4
+		TerrainTypes: Rock
+		BuildSounds: BUILD1.WAV
+		AllowInvalidPlacement: true
+	LaysTerrain:
+		Template: 88
+		TerrainTypes: Rock
+	Tooltip:
+		Name: Concrete
+		Description: Provides a strong foundation that prevents\ndamage from the terrain.
+	RenderSprites:
+	RemoveImmediately:
+
+CONCRETEA:
+	Inherits: ^CONCRETE
+	Building:
+		Footprint: xx xx
+		Dimensions: 2,2
+	Buildable:
+		Queue: Building
+		BuildPaletteOrder:10
+		Owner: atreides, harkonnen, ordos
+	Valued:
+		Cost: 20
+
+CONCRETEB:
+	Inherits: ^CONCRETE
+	Building:
+		Footprint: xxx xxx xxx
+		Dimensions: 3,3
+	Buildable:
+		Queue: Building
+		BuildPaletteOrder: 10
+		Owner: atreides, harkonnen, ordos
+	Valued:
+		Cost: 50
+
 ^CONYARD:
 	Inherits: ^Building
 	Building:
@@ -5,6 +44,9 @@
 		Footprint: xxx xxx
 		Dimensions: 3,2
 		Adjacent: 4
+	LaysTerrain:
+		TerrainTypes: Rock
+		Template: 88
 	Bib:
 	Buildable:
 		Queue: Building
diff --git a/mods/d2k/rules/system-world.yaml b/mods/d2k/rules/system-world.yaml
index c63fc1c0cb..9dad3f83ee 100644
--- a/mods/d2k/rules/system-world.yaml
+++ b/mods/d2k/rules/system-world.yaml
@@ -88,6 +88,7 @@ World:
 		Race: ordos
 	DomainIndex:
 	PathfinderDebugOverlay:
+	BuildableTerrainLayer:
 	D2kResourceLayer:
 	ResourceClaimLayer:
 	ResourceType@Spice:
diff --git a/mods/d2k/sequences/structures.yaml b/mods/d2k/sequences/structures.yaml
index 61995dceb0..119d4eb75f 100644
--- a/mods/d2k/sequences/structures.yaml
+++ b/mods/d2k/sequences/structures.yaml
@@ -1,3 +1,13 @@
+concretea:
+	icon: DATA
+		Start:4050
+		Offset: -30,-24
+
+concreteb:
+	icon: DATA
+		Start:4053
+		Offset: -30,-24
+
 walla:
 	idle: DATA
 		Frames: 2527, 2530, 2528, 2538, 2531, 2532, 2542, 2535, 2529, 2539, 2533, 2534, 2540, 2536, 2537, 2541
@@ -254,6 +264,10 @@ conyarda:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4046
 		Offset: -30,-24
@@ -388,6 +402,10 @@ starporta:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4092
 		Offset: -30,-24
@@ -422,6 +440,10 @@ pwra:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4056
 		Offset: -30,-24
@@ -446,6 +468,10 @@ barra:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4059
 		Offset: -30,-24
@@ -474,6 +500,10 @@ radara:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4072
 		Offset: -30,-24
@@ -505,6 +535,10 @@ refa:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4066
 		Offset: -30,-24
@@ -557,6 +591,10 @@ hightecha:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4078
 		Offset: -30,-24
@@ -586,6 +624,10 @@ researcha:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4099
 		Offset: -30,-24
@@ -615,6 +657,10 @@ researchh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4100
 		Offset: -30,-24
@@ -644,6 +690,10 @@ researcho:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4101
 		Offset: -30,-24
@@ -668,6 +718,10 @@ palacea:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4102
 		Offset: -30,-24
@@ -713,6 +767,10 @@ lighta:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4081
 		Offset: -30,-24
@@ -758,6 +816,10 @@ heavya:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4087
 		Offset: -30,-24
@@ -790,6 +852,10 @@ conyardh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4047
 		Offset: -30,-24
@@ -825,6 +891,10 @@ starporth:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4093
 		Offset: -30,-24
@@ -859,6 +929,10 @@ pwrh:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4057
 		Offset: -30,-24
@@ -883,6 +957,10 @@ barrh:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4060
 		Offset: -30,-24
@@ -911,6 +989,10 @@ radarh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4073
 		Offset: -30,-24
@@ -942,6 +1024,10 @@ refh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4067
 		Offset: -30,-24
@@ -994,6 +1080,10 @@ hightechh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4079
 		Offset: -30,-24
@@ -1026,6 +1116,10 @@ palaceh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4103
 		Offset: -30,-24
@@ -1071,6 +1165,10 @@ lighth:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4082
 		Offset: -30,-24
@@ -1116,6 +1214,10 @@ heavyh:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4088
 		Offset: -30,-24
@@ -1148,6 +1250,10 @@ conyardo:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4048
 		Offset: -30,-24
@@ -1183,6 +1289,10 @@ starporto:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4094
 		Offset: -30,-24
@@ -1218,6 +1328,10 @@ pwro:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4058
 		Offset: -30,-24
@@ -1242,6 +1356,10 @@ barro:
 		Frames: 617, 618, 637, 638
 		Length: 4
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 649, 650, 669, 670
+		Length: 4
+		Offset: -16,-16
 	icon: DATA
 		Start: 4061
 		Offset: -30,-24
@@ -1270,6 +1388,10 @@ radaro:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4074
 		Offset: -30,-24
@@ -1301,6 +1423,10 @@ refo:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4068
 		Offset: -30,-24
@@ -1353,6 +1479,10 @@ hightecho:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4080
 		Offset: -30,-24
@@ -1377,6 +1507,10 @@ palaceo:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4104
 		Offset: -30,-24
@@ -1422,6 +1556,10 @@ lighto:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4083
 		Offset: -30,-24
@@ -1467,6 +1605,10 @@ heavyo:
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4089
 		Offset: -30,-24
@@ -1482,6 +1624,10 @@ palacec: # TODO: unused
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: palacecicon
 		Start: 0
 	make: DATA
@@ -1525,6 +1671,10 @@ starportc: # TODO: unused
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA # TODO: blank
 		Start: 4020
 		Offset: -30,-24
@@ -1570,6 +1720,10 @@ heavyc: # TODO: unused
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA # TODO: blank
 		Start: 4020
 		Offset: -30,-24
@@ -1602,6 +1756,10 @@ conyardc: # TODO: unused
 		Frames: 611, 612, 613, 631, 632, 633
 		Length: 6
 		Offset: -16,-16
+	bib-Concrete: BLOXBASE
+		Frames: 643, 644, 645, 663, 664, 665
+		Length: 6
+		Offset: -16,-16
 	icon: DATA
 		Start: 4049
 		Offset: -30,-24
diff --git a/mods/d2k/weapons.yaml b/mods/d2k/weapons.yaml
index 8447341035..848cfdb788 100644
--- a/mods/d2k/weapons.yaml
+++ b/mods/d2k/weapons.yaml
@@ -621,3 +621,7 @@ Grenade:
 		Damage: 60
 		ImpactSound: EXPLLG5.WAV
 
+Weathering:
+	ROF: 100
+	Warhead:
+		Damage: 5
\ No newline at end of file