EASY COOPS Chicken Coop Plan 8x12 Assembly Instructions Manual page 5

STEP 2
Assemble The Top Beams
2.1 Assemble the top beams using 3 1/2" x 3 1/2" pressure-treated material.
You will need two boards cut to 12' and three boards cut to 8'. To connect top beams between themselves
use half lap connection (nodes B, C on page 17)
2.2 Connect the beams with 5" wood screws.
2.3 Using a speed square or carpenter's square, check the corners to make sure they are 90°.
C
B