Before you order our kit or begin construction, obtain a building permit. If additional documents are required contact Richard@barnkits.com. CAMBRIDGE ELEVATION Foundation Size 10'x12' Building 10'x16' Building 10'x20' Building 10 '- 0" x 12 '- 0" 10' - 0" x 16' - 0" 10' - 0" x 20' - 0" Wall Framing: Constructed from 2x4 precut wall studs spaced 24" on center between top, bottom and tie plates. Roof System: 2x4 trusses spaced 24" on center, (40 psf ground snow load, 90 mph wind load).