How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
(OP)
Hi,
I have an aluminium pole section (4x4x0.25) 24ft high with a 12" cantilevar fixture that will hold the lighting. I need to find the maximum EFFECTIVE PROJECTED AREA (EPA). Do I need to find the the maximum EPA versus the strenght of my pole or is it a limitation of displacement of the pole. If the horizontal limitation is L/50 and the vertical is L/100, do I only need to find the EPA not exceeding this displacements ?
It is not clear for me how the design should be done...
Anyone has experience with pole design ?
thank you,
I have an aluminium pole section (4x4x0.25) 24ft high with a 12" cantilevar fixture that will hold the lighting. I need to find the maximum EFFECTIVE PROJECTED AREA (EPA). Do I need to find the the maximum EPA versus the strenght of my pole or is it a limitation of displacement of the pole. If the horizontal limitation is L/50 and the vertical is L/100, do I only need to find the EPA not exceeding this displacements ?
It is not clear for me how the design should be done...
Anyone has experience with pole design ?
thank you,






RE: How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
RE: How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
I want to know how you calculate it, what is the design philosophy. I'm in a learning/design process. Let say you are hired by a manufacturer to analyse and determine the EPA of his 5x5x0.25 pole. How will you design it ?
RE: How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
I'm also unsure how they assume the EPA is distributed, whether it's all at the top of the pole or patterned somehow.
I don't know where this question is coming from. If you worked for a company that provides light poles, I'm sure they have standards that they design to. It's unlikely that they would leave it up to someone to figure out.
RE: How to determine the EFFECTIVE PROJECTED AREA (EPA) of a lighting pole
I don't know if this can help but we calculate the EPA first as a function of the section dimensions of the pole.Then we check the displacement which shouldn't surpass the criterias given by the technical functionaliy datas of the cell antennas