Oversized Postcards. Oversized postcards give you the most impact for your mailing campaigns. Our 6 x 11â and 8.5 x 11 postcard sizes represent a practical solution for companies that need all the space that postal regulations will allow. Restaurant owners, for instance, find these larger sizes invaluable for sending out their menus to local customers.
Pond Size And Depth. by Tom Burton. Once the where is decided, we need to determine size and depth. An ideal pond for the average hobbyist is between 23 and 25 feet long by 12 to 13 feet wide and 3 to 4 feet deep.
I never dive I used to do it in sea waves and even there once I bumped my head at the bottom a few times. For a shallow racing-type dive, a zero-freeboard pool should be at least 4 ft deep (and 6 ft would be better). So if you want to be able to dive in from any point along any edge of the pool, it would need to be 4-6 ft deep over its entire 'footprint'. For a vertical entry, significantly more depth is needed to reduce the risk of serious head/neck injury.