This spacer comprises of a 100 mm. base with convenient seats provided
on both sides for the re-bars to rest on. It can create a
concrete cover
distance of 25-50 mm. beneath the re-bar, and in the second network
with the
connection of 9 types of shafts ranging from 40-120 mm. on the
100 mm. base it can create a concrete cover distance of 140-220mm.
Meanwhile by using a 13 cm intermediate shaft we can
increase the height
between the spacer and the base plate from 270mm. to 350mm.(light
networks only:8-14Ømm.) This will eliminate the use of chair spacers
beneath the first network, , resulting in lower costs