80
i n s t a l l a t i o n o f g a r a g e a n d i n d u s t r i a l s e c t i o n a l d o o r s
9
suPPLEmEnt
Fastening of horizontal tracks to the ceiling
A.
if the lintel height is up to 400 mm the tracks
are fastened using 4 corner brackets, cramps and
bolts and nuts . fasten the multi-purpose bracket to
the double tracks using the cramp and the bolt and
the nut .
there are two types of brackets applied for tracks fastening to the ceiling depending on the lintel height .
fasten the corner bracket to
the ceiling with tapping screws
(2 pieces) and dowels .
В.
if the lintel height is more than 400 mm the tracks
are fastened using multi-purpose corner brackets,
punched angle, punched angle connectors and double
tracks and bolts and nuts .
a
B
check tracks horizontality using the builder's level (adjust if
required) . Before final fastening of the tracks to the ceiling
you must check the distance between alternate angles
(diagonal a and B must be equal) .
fix the multi-purpose corner
bracket to the punched angle using
bolts with semi-round head and
flanged nuts .
fastening of the punched angle to the
door tracks with low lift is made with
the punched angle connector using the
cramp, bolts and nuts .
