Step 1
Till the ground to level the foundation. Measure and mark every four feet of the building outline on the ground with spray paint along all four sides.
Step 2
Dig post holes at least 5 feet below the ground directly over each spray paint mark. Keep the diameter of the holes to less than 6 inches. Fill one hole approximately halfway with cement and insert an 8-foot long metal pipe immediately. Fill the hole with cement to ground level and repeat with all the holes. Allow to set overnight.
Step 3
Cut the top of each pipe to the same above-ground height with a reciprocating saw. Measure up each metal frame post and mark every two feet. Weld a bookshelf girt on each mark.
Step 4
Weld corner braces to the top of each metal pipe frame piece. Attach perforated galvanized steel tubing to the corner braces with bolts to form the base for the roof section.
Step 5
Lift the first roof truss onto the barn frame in inverted position, so the peak points down into the barn. Slide the truss along the roof to the end of the barn and check for equal overhang on each side before flipping it upright. Secure with hurricane braces by bolting to the galvanized steel tubing. Place additional roof trusses every four feet across the top of the barn frame.
Step 6
Attach tin roof sheets to the trusses with roofing nails. Start from the bottom edge of the trusses to create even lines, and overlap each subsequent layer to prevent roof leaks
Step 7
Insert 2-by-4 inch boards or similar beams into the bookshelf girts to serve as anchor points for wall panels. Screw metal or smart panels to the 2-by-4 beams to enclose the barn, leaving one or two sections open for entry and exit.