Layout Sizes

Mine is 8' wide by 12' long. This allows for a 72" loop and an 84" loop of Standard gauge track on the main level. I have a 2' x 4' access area in the middle.

My layout is about 7 x 11. Outer loop, and a figure eight folded back on itself for the inner loop. By golley, here it is!!

Room for lots of accessories. I may have too many, but the train control systems intrigue me - semaphores, block lights, signal bridges, etc.

My layout is a combination of standard gauge and O gauge. It is dog bone shaped measuring 24'-6" x 6' deep on the ends. The standard gauge actually goes through a wall about 5' at one end then comes back on to the layout. So I guess technically the standard gauge loop is 29'-6" long.

About 15' x 15-1/2'. As big as the room would allow...

http://tinplatenewyork.tumblr.com/

19' by 8' This is almost it. Too many things under the layout. I could use double the space. Just won a Olsen 123L mountain on E-bay and I need a upper level for that.

My near-future layout will be 18' x 16'.

Here's the planned layout (although some of the switches will come later).

I too am planning my first std gauge/O gauge layout combo for my basement. 16' X 22'. I am not big on switches. A few things to work out like access.....

My old std. Gauge layout was, 8' X 12' w/four loops. Two down w/two up with no switches. Powered by two Lionel Z Type.

My layout is 13' square. The Standard Gauge portion is a single loop around the perimeter; the interior is all 0 gauge. The corners have Standard Gauge tinplate buildings and accessories. The Standard Gauge curves are STD-87 purchased from USA Track. 

13.5 x 8.5 with access hatches to reach center. After changing it twice and removing the 4 switches we decided on two loops. 087 and an independent figure 8  42" loop. Its a permanent Christmas layout with dept 56 buildings and a giant ice bergs on each side of the figure 8 at a much higher elevation. The trains add to the Christmas theme. Bright colors, slow movement and fond memories. We used Dickens and North pole series buildings. We removed the switches because their noise detracted from the quiet enjoyment of the moment. Often we sit,relax and imagine what the elves and villagers are doing tonight. If Ross ever comes out with a 42" standard gauge switch we may ad a reversing track. Its a visual feast for the eyes as opposed to our operation oriented "O" gauge layout .

I've also been dreaming up a standard gauge layout recently and I suspect it will be about 8 x 11 give or take based on space available.