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Sledgehammer
From Wikipedia, the free encyclopedia
| Sledgehammer | |
|---|---|
 A 20 lb and a 10 lb sledgehammer |
|
| Other Names | Sledge Hammer |
| Classification | Hand tool |
| Used with | Wedge |
| Related | War hammer Maul |
A sledgehammer is a tool that consists of a large, flat head attached to a lever (or handle). The head is typically made of metal. The sledgehammer can apply more impulse than other hammers due to its large size. Along with the mallet, it shares the ability to distribute force over a wide area. This is in contrast to other types of hammer, which concentrate force in a relatively small area.
The handle is typically half a meter to a full meter long[citation needed]; the head mass is usually one to three kilograms. Sledgehammers usually require two hands and a swinging motion involving the entire torso, in contrast to smaller hammers used for driving in nails. The combination of a long swinging range and heavy head increase the force of the resulting impact.
Sledgehammers are often used in construction work for breaking through drywall or masonry walls. Sledgehammers are also used when substantial force is necessary to dislodge a stuck object (often in farm or oilfield work). Another common use is for driving fence posts into the ground.
Another iconic use of sledgehammers is for driving railroad spikes into the ground during rail construction. When the two ends of the Union Pacific railroad were joined at Promontory, Utah, Leland Stanford hammered a Golden Spike into a tie with a silver hammer.
In the United States, 10- and 20-pound sledgehammers are common. A 20-pound sledgehammer can break an unreinforced 8-inch concrete wall.[citation needed]
- The Sledgehammer: How It Works, a humorous essay by Steve Martin
