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Slabs

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Slabs
Stone Slab.pngStone Slab.pngSandstone Slab.pngSandstone Slab.pngCobblestone Slab.pngBricks Slab.pngStone Bricks Slab.pngOak-Wood Slab.pngSpruce Wood Slab.pngBirch Wood Slab.pngJungle Wood Slab.pngAcacia Wood Slab.pngDark Oak Wood Slab.pngNether Brick Slab.pngQuartz Slab.png
Double Stone Slab.pngSmooth stone slab.pngSandstone.pngSmooth Sandstone Full Half-Slab.pngCobblestone.pngBrick (Block).pngStone Brick.pngOak Wood Planks.pngSpruce Wood Planks.pngBirch Wood Planks.pngJungle Wood Planks.pngAcacia Wood Planks.pngDark Oak Wood Planks.pngNether Brick.pngBlock of Quartz.png
Stone SlabSandstone SlabCobblestone SlabBricks SlabStone Bricks SlabOak Wood SlabSpruce Wood SlabBirch Wood SlabJungle Wood SlabAcacia Wood SlabDark Oak Wood SlabNether Brick SlabQuartz Slab
Type

Solid Block

Requirements

None

Physics

No

Transparency

Double slab: No
Single slab: Partial (blocks light)

Luminance

No

Blast resistance

Wood: 15
Stone: 30

Tools

A wooden pickaxe or better is required to mine this blockUse-axe.png

Renewable

Stone: Yes
Wood: Yes
Sandstone: No
Cobblestone: Yes
Brick: No
Stone Brick: Yes
Nether Brick: No
Quartz: No

Stackable

Yes (64), same type only

Flammable

Wood: Yes
Stone: No

Availability

?

First appearances
Dirt, Stone
Survival Test 0.26
Sandstone, Oak Wood, Cobblestone
Beta 1.3
Bricks, Stone Brick, Smooth Stone Full Half-Slab
Beta 1.8
Upside-down Slabs
12w08a
Birch, Spruce, Jungle Wood
12w17a
Nether Brick
12w49a
Quartz
13w02a
Smooth Sandstone Full Half-slab
13w04a
Acacia, Dark Oak
1.7 Pre-release
Drops

Single Slab: Itself
Double Slab: 2
Slabs

Data values
Double Stone Slab
dec: 43 hex: 2B bin: 101011
Single Stone Slab
dec: 44 hex: 2C bin: 101100
Double Wooden Slab
dec: 125 hex: 7D bin: 1111101
Single Wooden Slab
dec: 126 hex: 7E bin: 1111110
Name
Stone Slab
stone_slab
Double Stone Slab
double_stone_slab
Wooden Slab
wooden_slab
Double Wooden Slab
double_wooden_slab

Slabs are half-blocks. Upside-down slabs occupy the top half of their block space rather than the bottom half. To place a slab upside-down, right-click on the bottom of a "ceiling" block, which can be removed after the slab has been placed, or by right clicking the top half of another block, if the player wishes to place it on the side of another double or single slab block.

All types of "stone" slab have the same data values; like wood and colored wool, they are differentiated by their damage values: stone slabs have a damage value of 0, sandstone slabs has 1, old wooden slabs has 2 (which were actually stone, and are still obtainable), cobblestone slabs has 3, bricks has 4, stone bricks has 5, and nether bricks has 6. Damage value 7 is occupied by nether quartz, and formerly by a smooth variant of the stone slab. Upside down stone slabs have a damage value of 8, sandstone has 9, wooden has 10, cobblestone has 11, bricks has 12, stone bricks has 13, nether bricks has 14, and nether quartz has 15. Real wood slabs use a different set of block and damage values.

Contents

[edit] Obtaining

[edit] Natural Occurrence

Stone slabs can be found naturally in NPC Villages lining the roof of a blacksmith shop and inside some of the buildings where they form counters. They are also found in Strongholds where they are used in some of the stairs, ledges and torch pillars. Sandstone slabs can be found naturally in desert wells and desert temples.

[edit] Crafting

Unlike many wooden items, wooden slabs must be crafted entirely from one type of wood, but by the same token, they keep the type (and color) of the wood used, thus "Birch Wood Slabs" and so forth.

Name Ingredients Crafting recipe

Stone Slab

Stone




Grid layout Arrow (small).png Stone Slab6
Stone Stone Stone



Sandstone Slab

Any Sandstone




Grid layout Arrow (small).png Sandstone Slab6
SandstoneChiseled SandstoneSmooth Sandstone SandstoneChiseled SandstoneSmooth Sandstone SandstoneChiseled SandstoneSmooth Sandstone



Cobblestone Slab

Cobblestone




Grid layout Arrow (small).png Cobblestone Slab6
Cobblestone Cobblestone Cobblestone



Bricks Slab

Bricks




Grid layout Arrow (small).png Bricks Slab6
Bricks Bricks Bricks



Stone Bricks Slab

Any Stone Bricks




Grid layout Arrow (small).png Stone Bricks Slab6
Stone BricksMossy Stone BricksCracked Stone BricksChiseled Stone Bricks Stone BricksMossy Stone BricksCracked Stone BricksChiseled Stone Bricks Stone BricksMossy Stone BricksCracked Stone BricksChiseled Stone Bricks



Any Wood Slab

Any Wood Planks




Grid layout Arrow (small).png Oak Wood Slab6Spruce Wood Slab6Birch Wood Slab6Jungle Wood Slab6Acacia Wood Slab6Dark Oak Wood Slab6
Oak Wood PlanksSpruce Wood PlanksBirch Wood PlanksJungle Wood PlanksAcacia Wood PlanksDark Oak Wood Planks Oak Wood PlanksSpruce Wood PlanksBirch Wood PlanksJungle Wood PlanksAcacia Wood PlanksDark Oak Wood Planks Oak Wood PlanksSpruce Wood PlanksBirch Wood PlanksJungle Wood PlanksAcacia Wood PlanksDark Oak Wood Planks



Nether Brick Slab

Nether Brick




Grid layout Arrow (small).png Nether Brick Slab6
Nether Brick Nether Brick Nether Brick



Quartz Slab

Any Quartz Block




Grid layout Arrow (small).png Quartz Slab6
Block of QuartzChiseled Quartz BlockPillar Quartz Block Block of QuartzChiseled Quartz BlockPillar Quartz Block Block of QuartzChiseled Quartz BlockPillar Quartz Block



[edit] Upcoming in 1.8

Ingredients Crafting recipe

Granite or
Polished Granite or
Diorite or
Polished Diorite or
Andesite or
Polished Andesite




Grid layout Arrow (small).png Stone Slab6
GranitePolished GraniteDioritePolished DioriteAndesitePolished Andesite GranitePolished GraniteDioritePolished DioriteAndesitePolished Andesite GranitePolished GraniteDioritePolished DioriteAndesitePolished Andesite



[edit] Usage

[edit] As a crafting ingredient

Name Ingredients Crafting recipe

Chiseled Quartz Block

Quartz Slab




Grid layout Arrow (small).png Chiseled Quartz Block

Quartz Slab

Quartz Slab

Daylight Sensor

Any Wood Slab +
Glass +
Nether Quartz

Glass Glass Glass Grid layout Arrow (small).png Daylight Sensor
Nether Quartz Nether Quartz Nether Quartz
Oak Wood SlabSpruce Wood SlabBirch Wood SlabJungle Wood SlabAcacia Wood SlabDark Oak Wood Slab Oak Wood SlabSpruce Wood SlabBirch Wood SlabJungle Wood SlabAcacia Wood SlabDark Oak Wood Slab Oak Wood SlabSpruce Wood SlabBirch Wood SlabJungle Wood SlabAcacia Wood SlabDark Oak Wood Slab

Chiseled Sandstone

Sandstone Slab




Grid layout Arrow (small).png Chiseled Sandstone

Sandstone Slab

Sandstone Slab

Chiseled Stone Bricks
(1.8)

Stone Bricks Slab




Grid layout Arrow (small).png Chiseled Stone Bricks

Stone Bricks Slab

Stone Bricks Slab

[edit] Behavior

An example of how upside-down slabs can make redstone travel compactly "up stairs".
Slabs do not block a vertical redstone connection.

Like other partial blocks, slabs are treated as a whole block by other blocks, such as dirt, stone, and glass, and liquids. Two slabs of the same type (e.g. two stone slabs) can be placed one on top of one another to make a single full-size block, but different slab types cannot be mixed in this way. Sandstone, wooden, and cobblestone double-slabs look exactly the same as their full block counterparts, but take a longer time to break and drop two slabs. Wooden slabs are collected more quickly with an axe and are flammable.

Single slabs have the tendency to let through arrows shot from above. They will also destroy gravel and sand blocks that fall onto them (the same as torches, as long as the slab is a bottom-half). They are also treated as transparent by the game and can cause suffocation, prevent placement of torches or other fixtures on them and chests with single slabs above them can still be opened.

An unusual property of slabs is that they are non-solid to redstone. This allows redstone wiring to be hidden underneath while still being able to connect to the wire on the side of the slabs. In addition, redstone placed on top of an upside-down slab can receive signals from an adjacent block of redstone one block lower but cannot transmit signals to it. This is why "ladders" made from upside-down slabs, as pictured to the right, can transmit redstone signals up, but not down.

Mobs can spawn on top of upside down slabs and on double slabs.

Due to the way blast rays propagate from an explosion, slabs provide extremely effective absorption to explosions directly on top of them. Specifically, this is because explosive entities will be lower in elevation when they explode on top of slabs than they would otherwise be on an ordinary block. Although the few slab(s) directly under the explosion will absorb the full force of the blast (with a resistance of 30) as usual, the propagation of damage to the sides will be greatly reduced. If source of the explosion is elevated for any reason at the time of the blast, this protective quirk is lost.

Despite how sneaking lowers the player's eye level half a block, doing so does not allow the player to walk over a single slab with one block of air above it because of the player's true height. A player cannot walk from a block of soul sand to a slab without jumping.

[edit] Video

[edit] History

Classic
October 24, 2009 Stone slabs were introduced to the game on October 24, 2009, in Classic Survival Test 0.27.
In Classic and Survival Test, stone slabs could be obtained by mining Coal Ore because of the lack of inventory and crafting.
Stone slab blocks were called stair blocks before the current stairs were added; after this, they were known as steps (the two forms being single steps and double steps) before all items got official names upon the Beta release.
Beta
1.3 Added sandstone, wooden, and cobblestone slabs.
Before the additional slabs were added, a double stone slab would only yield one slab when broken. Since this update, all double slabs yield 2 of their respective single slabs when broken. Destroying double slabs with TNT, however, still only yields single slabs (when the slabs aren't simply destroyed by the explosion).
Before Beta 1.3 came out, stone slabs were made with cobblestone instead of stone, but this update introduced cobblestone slabs to the game and changed the recipes for pressure plates and stone slabs so that there wouldn't be any conflicting recipes.
1.8 Added the stone brick, bricks, and smooth full half-slab. (Smooth full half-slab was only obtainable through inventory editing at the time.)
The sprinting feature was added in this update. While stairs stop the player's sprinting, slabs allow a player to continue sprinting.
Official release
1.2 Preview All types of slabs can now be placed upside down and under blocks; these occupy the top half of their block space rather than the bottom half.
Before 1.2, slabs had a 2:1 input/output ratio, i.e. 3 cobblestone would get you only 3 slabs out of the current 6. This is likely due to the fact that the slab types are differentiated by their damage values instead of by different data values, similar to wood, coal or charcoal, and colored wool.
1.3.1 12w17a
A wooden slab house with a netherrack fireplace using the old wooden oak/"stone" slab trick, allowing the fire to be contained.

New slabs were added for the four different types of wooden planks, replacing the old wooden oak/"stone" slab. The new slabs were vulnerable to fire, but could now be collected faster with an axe instead of a pickaxe. The old wooden slabs did not burn and could only be collected with a pickaxe because they were the same block and shared the same data value as other slabs, except with a different texture. This caused wooden slabs to break faster with a pickaxe rather than an axe. Wooden slabs were also are not affected by fire and had a stronger blast resistance than wooden planks, which made them a useful building material. These properties could be used in SMP to help prevent griefing, and the fact that wooden slabs didn't burn also made it useful for creating houses in The Nether; but since the update, they can no longer be safely used. The original wooden oak/"stone" slab can still be obtained through inventory editing or the /give command. Wooden slabs already crafted or placed in the world remain the old 'stone' type.

All four wooden upside-down slabs had the oak plank texture.
12w18a Fixed upside down slabs having same texture.
12w25a Redstone (including repeaters, torches, levers, and pressure plates) and rails can now be placed on slabs and stairs positioned upside down.
12w26a Mobs can now spawn on upside down slabs.
1.4.2 12w39a
upside-down slab lighting bug
Slabs interact properly with lighting now; when slabs are placed upside down, they now accept light from light sources themselves, and no longer block light to surrounding blocks; they no longer cast the shadow of a full-sized block.[1]
Smooth lighting on slabs is slightly bugged.
November 28, 2012 Jeb tweeted a picture of himself crafting netherbrick slabs.[2]
1.4.6 12w49a Added nether brick slabs, which causes the smooth full half-slab to change its damage value to 43:7
1.5 13w02a Added quartz slabs. The formerly unused slab type, known as the smooth full half-slab (see gallery), was removed from the game. Its data values were replaced with the nether quartz slab.
January 22, 2013 Jeb states that the smooth full half-slab will be re-implemented with a value of 43:8. The smooth sandstone slab will also be implemented, with a value of 43:9. He also stated that they may be obtained legitimately later.[3]
1.5 13w04a The smooth full half-slab is re-implemented with a value of 43:8. The smooth sandstone full half-slab is also added, with a value of 43:9.
1.7.2 1.7pre Added acacia and dark oak slabs.
Upcoming
1.8 14w02a Stone Brick slabs can now be used to craft Chiseled Stone Bricks also you can craft stone slabs using the new Polished Granite, Polished Diorite or Polished Andesite
Pocket Edition Alpha
0.1.0 Added stone slabs.
0.3.0 Added wooden (original oak), brick and cobblestone slabs.
0.6.0 Added sandstone and stone brick slabs.
Slabs can be placed on the top half of blocks.
The recipes for crafting slabs gives 6 slabs instead of 3 slabs.
0.8.0 Added birch and spruce wooden slabs.
Console Edition
TU1 Added wooden (original oak), sandstone and cobblestone stairs.

[edit] Dirt slab

The dirt slab, replacing all the dirt (not grass) blocks.

Before stone slabs were added to 0.26, Notch ran a test of dirt slabs. They were never added to the actual game and were only mentioned once.[4] They replaced all dirt blocks and did not grow grass on top.

[edit] Issues

Issues relating to "Slabs" are maintained on the issue tracker. Report issues there.

[edit] Trivia

Light passing through the sides of a brick slab from above. A normal block would render complete darkness.
  • An unused slab type, known as the "smooth full half-slab", has a data value of 438, but can only be obtained with /give or an inventory editor. It is a full block with the top texture of stone slabs on all six sides. A similar effect with sandstone can be obtained with 439. See the gallery for a comparison image.
  • Slabs let a small amount of light pass through their edges. This light is only visible with Smooth Lighting turned on, and does not affect mob spawning or other light-dependent processes.
    • The exception of this is that any light directed through a slab does not affect any block's light values north of the source.
  • When a slab is placed on top of ice, the slab has the same "slipperiness" as the ice below it. This applies to every other block with a hit-box less than a full block.
  • If slabs are placed below TNT, it will significantly reduce their damage. By making a floor of slabs, the TNT will lower its explosive power to two blocks instead of six. This is so because the TNT believes that it is inside the slab, for the game thinks that it is inside a full block, greatly reducing its explosion radius.
  • mobs see a slab as a full block. Therefore, by placing an upside down slab above a slab with a block in between, there will be sufficient space for the player to walk through. Mobs, however, will see one block of space in between and won't get through. This does not apply to baby zombies and spiders, because they are only one block tall, and to slimes, as they will hop towards the player even if there is something obstructing the way.
  • Stone slabs are the only slab which, when stacked, do not mimic their block in texture.
  • You can sneak walk off slabs at ground level.
  • Minecarts on powered rails will not be repelled from a slab. They will, however, be repelled by a slab with a minecart on top.
  • Though wooden slabs are flammable, the old wooden oak/"stone" slab is still available through inventory editing or the /give command, so in a world/server where commands are allowed, it is possible to obtain fireproof wooden slabs.
  • When Creepers explode on stone slabs they only destroy the slab they were standing on and nothing else in the area.
  • It is possible to get any type of double slab that you want by using the /give command and typing in /give (player) stone_slab 1 (slab id). This will allow you to build faster. There is not however any way to get a double slab in your inventory without commands, creative mode or mods.
  • If you type in /give <player> stone_slab 1 10, then it will give you a wooden slab or plank, but it acts like a stone block. It is not flammable and it makes "stone" sound effects when they are placed, broken, or stepped on. This is the version of the wood slab that was used for old slabs when wood slabs were made flammable.
  • If redstone dust is placed on an upside-down slab, it will not trigger adjacent TNT.
  • If you set a slab on the top half side of any block under water, it will displace as much of it as a whole block. Not only can you grab a quick breath of air, but you can see as clear through the water as looking over the land above the surface than in it itself.
  • When an upside down slab is pushed from the bottom by a piston (or regular slab pushed from the top), it is pushed without having contact from the piston. The same idea can also be made when pulled by a sticky piston.

[edit] Gallery

[edit] References