Different pools and facilities may have different policies but generally there is not. As long as all areas of the pool are being watched it's good. If needed, a lifegaurd can call on an extra guard and on holidays normally there are extra just in case.
First measure the ppm chlorine level that your pool is at. Next see what the ratio of chlorine is specified on the back of the chlorine package. For example to raise the pool 1 ppm add 13 ounces of chlorine to a 10,000 gal pool. Then set up a ratio of your pool size.
I am a national lifeguard, working at an outdoor pool. Temperature should be between 74 ~ 80. If it's over 80 degree, there is possibly a great chance of bacteria growing.
A miniature pool table would be considered a toy, not a pool table. Depending upon the size, it could be made of plastic or wood. To choose a size, determine what size you can purchase the balls needed for the table. A lathe will be needed to make the pool cues. The rest of the table can easily be constructed of wood or plastic, and covered in cheap fabric store felt. There are plans available online for pool table construction. These can be used and scaled down to match the size of the pool balls that have been selected. The scale will be determined by using the same ratio for ball size to rail height and pocket openings as is used on the full size table.
A miniature pool table would be considered a toy, not a pool table. Depending upon the size, it could be made of plastic or wood. To choose a size, determine what size you can purchase the balls needed for the table. A lathe will be needed to make the pool cues. The rest of the table can easily be constructed of wood or plastic, and covered in cheap fabric store felt. There are plans available online for pool table construction. These can be used and scaled down to match the size of the pool balls that have been selected. The scale will be determined by using the same ratio for ball size to rail height and pocket openings as is used on the full size table.
It is the ratio between the size of the sample and the size of the population.
it depends on the size of the pool an olympic size pool (50m) would be about 33 lengths or a more common size pool is 25m which would be 66 lengths
Swimming Pools 50 for the pool area; 15 on the deck* http://www.rcaluc.org/filemanager/plan/new//22-%20Appendix%20C.%20Determining%20Concentrations%20of%20People.pdfHowever, it of course is related to pool size, most likely in square feet, not gallons, since a diving pool would have lots of gallons, and a kiddie wading pool lots of area...some public pools in their rules posted on internet that I've accessed allow almost 300 persons.I think Occupants per Lifeguard - in the 40 person range per lifeguard seems a more useful rule than a set number, e.g. "50 for the pool area."
It does affect overall ratio. The transmission ratios, the axle ratio, and tire size all figure into overall ratio.
compression ratio = compressed size / uncompressed size the ratio should be between 1 and 0 (multiply with 100 to get the ratio in percent) a ratio greater than 1 means, the compressed size is actually greater than the uncompressed size a ratio just below 1 means bad compression the lower the ratio, the better the compression
compression ratio=uncompressed image size/compressed size
It depends on the size of the pool!
That depends on what size pool you have. If you have a smaller pool, the amount would be less, and if you have a larger pool, the amount is more. Consult the instructions on a chlorine box for what size pool and how much to use.