EULUMDAT is a data file format used for specification of photometric data especially intensity distributions from light sources such as lamps and luminaries. The file extension is .ldt. The format was proposed by Axel Stockmar (Light Consult Inc., Berlin) in 1990. The format is the European equivalent to the IES file format specified in IESNA LM-63. The data in an EULUMDAT file is usually measured using a goniophotometer.
Sweep or Vacuum Dirt Daily. Removing the dirt, sand or dust that is tracked in on a daily basis should be done every day. That's right, every single day. The best way to keep your hardwood floors clean and prevent damage is to sweep or vacuum them daily.
Cleaning Floors Cleaning Floors Hardwood Wood Vinyl Ceramic. Ceramic-tile floors can be cleaned easily with nothing but warm water, but be sure to sweep or vacuum first to remove any loose soil or grit. Never use a sponge mop to clean ceramic-tile floors. It will pull the dirt right into the grout tracks. This makes the floor more difficult to clean. A micro-fiber mop picks up all the dirt that a sponge mop leaves behind. Pour the ingredients into a bucket and use a rag or micro-fiber mop to clean.