learn how to splice rebar or reinforcing steel by following the formula shown on your drawings. this call outs or details will typically show on your general notes, or in some cases they will be shown on a separate schedule on your sheets. this formula will be shown as following
rebar splice shall be X bar diameter * Y
# 5 rebar * 40 will be
(5/8) * 40 = 30"
don't forget to add at least 4 wire ties in the rebar, we typically place 5 ties for each splice; however, in some cases your structural drawings will also request a specific number of ties on the splice.