Final answer:
The allowable overhang of a platform more than 10 feet long is not specified in the provided information, but standard practice usually sets this limit at 12 inches beyond the support, according to safety guidelines such as OSHA's.
Step-by-step explanation:
The questionpertains to the allowable extension of a platform beyond its support when it exceeds a length of 10 feet. This is typically a consideration in fields such as construction, scaffolding, or any situation where platforms are used to hold weight and ensure safety.
There isn't an exact number given in the information provided, and this value can differ depending on the regulations in place, such as those by the Occupational Safety and Health Administration (OSHA).
However, the typical rule for scaffold platforms is that they should not extend more than 12 inches past their endpoint supports unless they have been specifically designed to sustain such an overhang. Many times, work platform guidelines will dictate these measurements to ensure a safe working environment and to prevent the platform from tipping or collapsing.
The question is asking how many inches over the support each platform more than 10 feet long should not extend. Based on the information provided, it is suggested that the platform should not extend more than 15 diameters deep, which is the equivalent of 15 times the diameter.
Since the diameter is not specified, we cannot determine the exact number of inches the platform should not extend. However, if we assume a standard diameter of 1 foot (12 inches), then the platform should not extend more than 15 x 12 = 180 inches over the support.