Final answer:
Truss spacing in engineering plans is specified to ensure structural integrity and load-bearing capacity. Maximum tolerance for truss spacing is usually specified in inches, such as 24 inches for a residential roof truss system.
Step-by-step explanation:
In engineering, trusses are used to support structures like roofs and bridges. The spacing of trusses refers to the distance between each truss. These spacings are typically specified in engineering plans to ensure that the structure can withstand the load it will bear. The maximum tolerance for truss spacing is usually specified in inches and can vary depending on the design and purpose of the structure. For example, in a residential roof truss system, the maximum tolerance might be specified as 24 inches, meaning that the spacing between trusses should not exceed this distance.