1. An iso-grid composite component for a gas turbine engine comprising:a uni-tape ply bundle including uni-tape plies and a first spacer ply;
a spacer including a second, different spacer ply, said spacer transverse to said uni-tape ply bundle, and said spacer interrupted by said uni-tape ply bundle;
an interstitial ply layer adjacent said uni-tape ply bundle and said spacer; and
wherein said uni-tape ply bundle and said spacer define a rib pattern, said uni-tape ply bundle at least partially defines a first rib of said rib pattern, said spacer at least partially defines a second rib of said rib pattern that is transverse to said first rib, and said interstitial ply layer spanning between a first sidewall of said first rib and a second sidewall of said second rib.