Aircraft Hangers

The Revell hanger is 1/100 scale even though the equipment and plane are 72nd.

There is a nice card model of a German hanger in 1/144th scale here:
http://www.tomtom-net.de/resources/cardmodel/hangar/hangar_f.htm

You can print it out at 200% to get it in 1/72nd or just use it as plans to make one out of sheet plastic.

Nice build of a 72nd hanger here but no plans.
http://worldwartwozone.com/forums/members-showcase/7211-my-1-72-hangar-airfield.html

There are about as many different designs out there as you want. Find a pic of the type you like and use stuff around to scale it.
Use Google search or Google Images to help (I found both of the above links using 1/144 aircraft hanger and 1/72 aircraft hanger. There were other results to these).

Good luck and remember to post pictures.

...........A few Years ago Revell of Germany sold a aircraft shelter along  with an Euro Fighter and ground equipment. Its probably still available if that's what your looking for.

Use Google maps to get an idea of the footprint of a hanger. Are you planning on having it as a cut away to use as a photo backdrop for models (read this as a helpful suggestion)? If you are planning on an entire hanger it's going to be a big diorama, and you are going to need plenty of patience to build it.