Description Benches provide needed seating in parks, plazas, and along streets. They may be borrowed for demonstration projects or installed semi-permanently for pilot and interim design projects. 
Typical Dimensions A common two-person bench dimension is 4 ft. long x 23 in. wide x 28 in. height. 
Estimated Cost $500 - $1000
Durability Demo: 1 day to 1 month installation / Pilot: 1 month to 1 year installation / Interim: 1 year to 5 year installation

Curb Extensions/Plazas/Activated Alleys Place wherever seating is desired / appropriate.

When selecting bench model, consider weight, maintenance, and impact on transport and storage. 
For pilot or interim design projects consider selecting a UV resistant paint finish.
When locating consider regional and micro-climates (sun vs. shade, winter vs. summer, etc.).

Borrow from existing city departments or local businesses. 
Purchase from outdoor furniture store or hardware store. Example: http://www.homedepot.com/p/Lasting-Impressions-4-ft-Park-Bench-460-225-0006/205114215