What is 4 foot 8 foot 12 foot curling?

Understanding 4-foot, 8-foot, 12-foot Curling

As revealed on Google, the 4-foot, 8-foot, and 12-foot curling rings are critical in the sport of curling, forming targets comprised of concentric circles at each end of the curling sheet. These rings help players gauge the proximity of their stones to the center, although they do not affect scoring directly.

Curling Sheet: The Playing Surface

The curling sheet is an elongated ice surface meticulously prepared to be level and flat, spanning 146 to 150 feet in length and 14.2 to 15.7 feet in width. The shorter borders of this ice rectangle are known as the backboards, and several sheets are often arranged side by side in arenas to accommodate multiple games concurrently.

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Each end of the sheet features a target called "the house," which includes three concentric rings identifiable by colors. These rings, with diameters labeled the 4-foot, 8-foot, and 12-foot rings, serve as visual aids for determining which stone lies closer to the center. While these rings are essential for aiming, they do not influence scoring, but a stone must touch the outer ring to be eligible for scoring.

The house is centered at the intersection of the center line and the tee line, with the center of each house known as the button. Hog lines are situated 21 feet from the tee line center, determining the boundary for legal stone delivery.

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Behind each button, fixed hacks provide stability and leverage for players during stone delivery. Indoor rinks typically feature two fixed hacks lined with rubber on both sides of the center line, though a single moveable hack may also be used.

Ice for curling can be natural but is usually maintained by a refrigeration plant that circulates a brine solution through numerous fixed pipes in a shallow water pan. This system ensures consistent ice conditions, essential for major championships like the Tim Hortons Brier. Ice makers must closely monitor and adjust temperature and humidity levels to preserve the integrity of the playing surface.

The preparation of curling ice involves spraying water droplets to create pebble, which affects the stone’s movement. As stones curl when passing over pebble, the degree of a stone's curl can change during a match as the pebble wears down, requiring ice makers to regularly scrape and re-pebble the ice between games.

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Common Curling Terms

Across the Face

To play a rock so that it curls from one side of an existing stone to the other side, with or without contact.

Away End

The end of the sheet where the initial rocks are delivered (odd-numbered ends).

Backing

When stones are behind the target location, potentially stopping a rock that is delivered with too much force.

Biter / Biting

A rock that is barely touching the outer circle of the house.

Burning a Rock

A penalty that occurs when a player touches a stone in motion.

Clean

Gently sweeping in front of a stone to clear debris without affecting its path.

Curl

The natural curve of a stone, influenced further by sweeping, typically performed by the outside sweeper at an angle.

Delivery

The act of throwing a stone across the sheet.

Draw

A shot aimed to keep the stone in play, either stopping in the house for points or short of it as a guard.

Guard Shot

A stone placed outside the house to protect other stones.

Heavy

A stone delivered with more force than intended.

High Side

The initial contact side of an in-play stone that the delivered stone hits before crossing its center.

Hit and Roll

A take-out shot that removes a stone and positions the shooter or another stone favorably.

Hit and Stick

A take-out shot that removes a stone, leaving the shooter or another stone in the same line (no roll).

Hogged Rock

A delivered rock that doesn’t fully cross the hog line and is removed from play.

Home End

The end where stones are delivered in even-numbered ends.

Hurry / Hard

A command for sweepers to start sweeping.

In-Off

A high-difficulty shot where a stone uses another to bounce into an otherwise unreachable position.

In-Turn

Clockwise rotation of the handle for a right-handed curler.

Keen (Ice)

Fast ice requiring less momentum to reach the target.

Light

A rock with less force than needed.

Line

The path of a stone in play; can also refer to commands to maintain its trajectory.

Low Side

The side of an in-play rock opposite to the direction of curl.

Narrow

When a rock is delivered inside the intended target line.

Nose

The center of a rock.

Out-Turn

Counterclockwise rotation of the handle for a right-handed curler.

Raise

Hitting a stone without removing it, often to reposition it beneficially.

Straight (Ice)

Ice that exhibits minimal curl.

Swingy (Ice)

Ice that results in substantial curl when delivered consistently.

Take Outs

Shots aimed at removing one or more stones from play.

Wide

When a delivered stone is outside the target line.