EASY COOPS Chicken Coop Plan 20x40 Assembly Instructions Manual page 5

STEP 2
Framing the Floor
2.1 Assemble the frame using 1 1/2" x 7 1/4" pressure-treated lumber.
You will need eight boards cut to 8'-6 1/4" that will be the joist.
2.2 Secure the beams with 3" wood screws.
2.3 Using a speed square or carpenter's square, check the corners to make sure they are 90°.