Montgomery Maxwell BR montgomery_maxwell_afb_jlus_br_june 2017a_sm | Page 240

limitations , such as 150 feet or 500 feet , for built structures , which makes it less challenging to determine if a structure will be a vertical obstruction .
Compatibility Assessment The City of Montgomery has incorporated some of the imaginary surfaces in its zoning ordinance through the adoption of the AHA and a map titled , “ Standards for Determining Obstructions to Air Navigation , Maxwell A . F . B ., Montgomery , Alabama ;” however , the AHA regulations only apply to an area that is two miles around the airfield . The imaginary surfaces in their entirety cover an area up to 9.5 miles around the airfield . Although the City of Montgomery has adopted the AHA , the majority of height restrictions of the zoning districts in the zoning ordinance appear to be compatible with the various imaginary surfaces , except for the B‐1‐a and B‐1‐b Central Business District and U – Utilities and FH – Flood Hazard Districts , which have no limit established for maximum building height . This could result in a major compatibility issue if a business wanted to construct a very tall building near the airfield . The U and FH Zoning Districts also do not have specified height restrictions , which can pose a vertical obstruction to safe air navigation .
If this imaginary surface guidance is not considered or followed in future development , including renovations , then a risk could be created resulting in unsafe navigable airspace . If an aircraft mishap were to occur , then there could be damage to federal and private property as well as safety risks for the general public . This could also delay and postpone mission training , which could ultimately degrade military capability for training in the future at Maxwell AFB .
Due to this not referenced in the AHA , it is likely that this scenario would not be evaluated until application submission , which is after plans have been formalized and funding has been secured for the plans . At this time in the process usually a significant amount of money has been spent in developing the plans . If the slope of these certain imaginary surfaces is considered after the plans have been developed , then that can result in additional costs to
the developer and potentially lost economic de the city .
The City of Prattville establishes height restricti within their code . The majority of the zoning di which is typically a compatible height . Table 5.2 about two zoning districts — B‐4 , Highway Comm Agricultural , Recreation — that could present a c erected in an area near the transitional surface departure clearance surface and not coordinate
Table 5.23‐1 .
Zoning District B‐4 ( Highway Commercial )
Heights of the Commercial High Recreation Districts for the City
Maximum Height Maximum Height : Sevent feet or five ( 5 ) stories ; wh less .
FAR ( Forest , Height of Buildings : No b Agricultural , shall exceed two and one Recreation ) stories or thirty‐five ( 35 ) f height except in the case spires , domes or other su structures not designed fo occupancy may exceed th provided such structures with the provisions of all pertinent codes and ordin and provided further , tha structures are located no the nearest property line distance equal to their he ten ( 10 ) feet . No accessor structure shall exceed two stories or twenty‐five ( 25 height .
Source : City of Prattville Code of Ordinances , Adopt
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