Backhoe loader of the backhoe could cause the vehicle to tip, most backhoe loaders use hydraulic outriggers or stabilizers at the rear when digging and lower the loader bucket for additional stability. This means that the bucket must be raised and the outriggers retracted when the vehicle needs to change positions, reducing efficiency. For this reason many companies offer miniature tracked excavators, which sacrifice the loader function and ability to be driven from site to site, for increased digging efficiency. Their relatively small frame and precise control make backhoe-loaders very useful and common in urban engineering projects such as construction and repairs
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