Tractor in confined areas. The most common variation of the classic farm tractor is the hoe, also called a hoe-loader. As the name implies, it has a loader assembly on the front and a backhoe on the back. Backhoes attach to a three-point hitch on farm or industrial tractors. Industrial tractors are often heavier in construction, particularly with regards to the use of steel grill for protection from rocks and the use of construction tires. When the backhoe is permanently attached, the machine usually has a seat that can swivel to the rear to face the hoe controls. Removable backhoe attachments
Back-to-back house floor, while later houses were two-up two-down. Every house shared a rear wall, whether with a house directly behind or with an industrial building. Given that the house usually shared three of its four walls with neighbouring buildings, back-to-back houses were notoriously ill-lit and poorly ventilated. Such was the initial lack of consideration for hygiene, that some houses were found to have been built over open drains covered only by boards. The term "back-to-back" should not be confused with "through" terraced houses, the backs of which face each other across an alleyway, and are thus not contiguous like a true