An assembly defining a portion of an arcuate outer surface of a tire building drum, the assembly including first and second interlacing deck segments coupled to a central support member to be moved in a radially reciprocating manner, each of the interlacing deck segments including a plurality of center sections coupled together, a plurality of first grooves between the center sections, a plurality of first finger portions extending from the center sections away from the central support member, a plurality of second finger portions extending from the center sections in an opposite direction over the central support member, and a plurality of second grooves formed adjacent each of the second finger portions, wherein the second finger portions are arranged in parallel over the central support member, and the first grooves in each of the interlacing deck segments align with the second grooves of the other of the interlacing deck segments.