Horizontal axis and vertical axis windmills are the two most widely used types of windmills. They have two or three blades that convert wind energy into rotational mechanical energy, which then powers an electricity gene... More »

Some historians believe that vertical-axis windmills were first constructed in Persia between A.D. 500 and 900 to assist in the tasks of grinding grain and pumping water. There are other accounts that vertical-axis windm... More »

Builders can find plans for a working windmill at NoTechMagazine.com and PopularMechanics.com. As of 2015, both of these websites offer plans for free without a magazine subscription. More »

www.reference.com Home & Garden Home Maintenance

The 'original' color of the Eiffel Tower can be traced back to two different points: it was painted a brighter red shade called 'Venetian red' when its parts were first being fabricated in 1887-88 (prior to assembly), bu... More »

Some common features in smaller luxury house plans include spacious garages with room for two or more vehicles and walk-in closets for the bedrooms inside the homes. Depending on the style of house, plans may also includ... More »

www.reference.com Art & Literature Architecture

A multi-story building is a building that supports two or more floors above ground. There is no formal restriction on the height of such a building or the number of floors a multi-story building may contain, though talle... More »

There are three basic different types of scaffolding: supported scaffolds, suspension scaffolds and manlifts or personnel hoists. Supported scaffolds are one or more platforms held up by items like poles and frames. Susp... More »