Every size in the model comes from these numbers on Dad's sheets.
- Footprint
- 54′-0″ wide × 50′-0″ long. A 30′ center barn with a 12′ lean-to down each side.
- North row
- Office 10′ × 15′ with a 9′-0″ ceiling and a door from the alley that swings into the office, then three pens 10′ × 10′ with gates onto the alley and between them, a mirror of the south row.
- Center alley
- 10′ wide, with 5′ + 5′ sliding doors (a 10′ opening, full height to the 14′ eave) on both ends and double gates into a 5′ cross alley at the east end. The cross alley has a 5′ sliding door at each end, into the lean-tos.
- South row
- Doctor pen 10′ × 15′ with a chute and headgate, set 2′ off the south wall, and a 6′ gate that swings out into the alley. The chute runs straight along the west wall; only its east side squeezes in to the headgate. A 5′ sliding door in the south wall, in front of the headgate, opens to the lean-to. Then three pens 10′ × 10′.
- Walls & roof
- 14′-0″ sidewalls, 4/12 roof to a 19′-0″ peak. A 2′-6″ band of daylight panels runs above each lean-to roof. Option (Extended north roof button): carry the main 4/12 roof straight out over the north lean-to. The outer wall is then 10′-0″ instead of 9′-0″, and the north daylight band goes away.
- Lean-tos
- Roof runs from 11′-6″ at the barn down to 9′-0″ at the outside. 10′ pipe gates, 5′ tall, between the posts on the outside, and a solid barn wall on the inside.
The numbers add up across all three sheets: 12 + 30 + 12 = 54′ wide, 15 + 10 + 10 + 10 + 5 = 50′ long, and a 4/12 roof over a 15′ half-span rises 5′, so 14′ + 5′ gives the 19′ peak.