Lightning protection design with autocad

The program in Autolisp (@Autodesk) programming language is written - using the rolling sphere method- calculates the protected area defined by the specified lightning rods and on the desired level of height depicts the interpolation.

Instruction manual:


1. Loading AUTOCAD 20xx

2. Open any drawing

3. Type  "vv" + Enter

4. After that the program requires step-by-step all of datas what's needed to the calculation:

 

- Radius of rolling spheres (R)

Remark: basic settings: 100 (that is supposed to the unit: meter for basic plan). However it can be convert to millimetres, and then you have to type implicitly 100000 to the 100- metre-long- radius of rolling sphere.

- The depict desired level height (h)

- Number of rods (n),

- Intake of rods with coordinates or graphically (F1.....Fn)

Remark: Either type the coordinates or move the cursor to the desired space (in this case you have to give the "absolut" height of peak rods to the presently desired intake).

Processing the input dates by the program, it creates the protected space of rods in the way of plotting at a desired level:

 - It depicts by white circle the own protected space of rods in a given level.

 - the red arcs indicate to some pair of rods added to the horizontal engravings of the rolling spheres on a zero metre level.

 - the union of the blue coloured arcs (is not a protected space!): from above to the rods are touching the horizontal engravings of the spheres.

 

When you open the plan next time, the lightning protected program offer you the latest input dates, which we can reaccept by Enter or can modify to facilitate the rapid retrofit.

 

 

To start download click here!

 

 

 

 

 

 

 

 



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