Set up/arrange lights

[lwinters630]

20 lamps X 60 watts = 1200 watts divide by 120 volts gives you 10 amps. Your ETC dimmers are 20 amps 2400 watts.
Check the strip light rating, if they 100 watts then don't combine your strip as you will be close to max. (Usually 18 amps). Also if they allows 100 w. Put them in. That will help.

If your school doesn't know where the blue prints are (and key] call ETC they can probably send you a file with the system layout and tell you who installed it. Local companies like to come out and help coach you.

Let us know what you find monday.

 

[kicknargel]

I actually did try this. There ends up being some overlap causing some spots to be brighter and darker than others, but even so the back row of the band is noticeably less bright than the front/middle.

My point is, you may be able to improve the evenness of the lighting across the stage, merely by adjust the focus (aim) of the lights where they are currently hanging, without have to change their hanging locations.

Beyond that, lwinters is right: the basic tool of a lighting designer is a to-scale top (proper term would be plan or light plot) and side (proper term would be section) drawing.

 

[robartsd]

The standard sizes for Altman 520 3-circuit borderlights are 6'-9" or 8' (18 or 21 lamps @ 4.5" O.C.). The Altman 528 (6" O.C.) 3 circuit borderlights have standard sizes of 6' or 7'-6" (12 or 15 lamps @ 6" O.C.). Altman does make custom sizes and circuiting of both these models. If indeed there borderlights are Altman and have 15 lamps/fixture they are probably Altman 528. The 528 can accept 200W lamps, so it is quite possible that a single circuit each of three of these fixtures could exceed the capacity of one dimmer. These Altman borderlights are rated for 20 amps; if the borderlights were not rated for 20 amps, you could still load a dimmer to 20 amps using a two-fer.