Recent content by tft2001

Thanks!

Thanks. Do you have any suggested lighting design guides, manuals, etc.?

If you have an existing light source and you add another new light source over the existing, are the foot-candle readings cumulative

I have a simple question concerning the results of RISA analysis as follows. I have a single story framing system and the axial load between the top of the column and the bottom of the column is consistently 3.245 kips; however, my column only weighs .431 kips and there are no other additional...

Great! Appreciate all the comments.

Thanks. I plan on performing exactly that, however, I am wondering if there is a particular code/standard that indicates what minimum strength/safety factor the anchor/hanger system is to comply with. Any suggestions?

I am in the process of evaluating light fixture hangers that are ~10 to 20 years old. Is there a particular code and/or design standard associated with the evaluation of existing hangers or the requirements for new hangers (i.e., material, safety factors, etc.)?

Thanks for the options MintJulep!

approximately 42 degrees latitude ambient temperature range -20 degrees F to 110 degrees F Power to lights is not a problem and has been under development. Sheltered from all items listed; however, condensed moisture might come into play.

Understood. Again as this is just starting off, we do not have all of the items ironed out yet. However, the following list might give some further understanding of the system: Loads - N.T.E. 500 pounds Speed - 2 to possibly 4 rpm Constant rotation in same direction - no reversing - only...

I am currently in the initial stages of design for a small (~8 ft dia.) rotating light platform that will be protected from direct contact with weather elements, however, this system must be very reliable with very minimal need for servicing/maintenance due to very restricted access conditions...

I am currently in the initial stages of design for a small (~8 ft dia.) rotating light platform that will be protected from direct contact with weather elements, however, this system must be very reliable with very minimal need for servicing/maintenance due to very restricted access conditions...

JoshPlum - Thanks for the response. So, for now with RISA 9.1, would you suggest that we analyze the structure (walls) under a general material format and size any headers, etc. within the concrete wall based on the response from the program?

Is there a way to insert penetrations into a large concrete wall panel within RISA or do you have to "build" the model around each penetration?

hokie66 - We are still working with the truss designer, however, the spacing could be between 2 and 4 feet o.c.