Just built a new shop about 1 1/2 years ago. 50'x 60' with 16' 8" ceiling. Wood frame metal siding inside and out.
If your doing in floor heat, you must insulate under the concrete with a minimum of 2" SM. I'm heating it with a natural gas wall hung condensing boiler 100,000btu and it also provides the domestic hot water (40 gal.) through a "Smart Tank" with built in heat exchanger. I've got the domestic hot water temp turned down so as I can use through the pressure washer without taking out the pump.
I put on the side a 12' x 18' office that houses the mechanical room, washroom and desk area it has a 10' ceiling.
Things I've done in the shop:
- Installed a direct drive exhaust fan on roof with speed control and timer. The only down fall is you need to crack open a door while running the fan but in seconds it does a complete air change.
- air line from one side at compressor location to the other side is hard piped with two hose reals soon to be mounted.
- trough drain for one bay that can used as a wash bay as walls are all metal and easily cleaned if needed.
- three over head doors two on the front 50' wall 16' wide and 14' high, and one on the side wall opposite the office 12' wide x 14' high all with automatic openers with remote. Nice feature when your driving your equipment out in the winter you don't need to get out and close/open the door.
- used high output t-4 6 lamp fluorescents (12) total, with the white metal walls and ceilings it's extremely bright.
- installed 2 5'x5' windows on each side wall with the bottom of the windows at 6 1/2 off the floor, let's in all kinds of natural light and people can't see in from the outside as easy. The front of the shop with the two over head doors if got 4 windows installed on the fifth panel from the floor on each door. If you need to just run in and grab something you don't need the lights on.
- two ceiling fans just because.
- one major thing if you have a lot equipment coming in the winter full snow or washing equipment and vehicles in the wash bay, I've installed a HRV and have it connected to a dehumidistat so when the humidity gets to high it exhaust the warm moist air but at the same time pre heats the incoming air. A MUST WITH RADIANT HEAT.
- all shop tables on heavy duty casters that can moved as needed. Bench vise mounted to a shop table so it always close by when you need it.
Eventually I plan on building an A frame hoist on wheels that can moved arround.
Would I do anything different? No, took some friends advice and figured out what size I thought I needed and added 25% extra space. The office on the side is great and recomend that you do the same, always clean and dust/dirt free and quiet area if need for phone calls.