9
Step3:
Put (I) on the second roof but do not expand it. Insert (K) into (J),
and then use screws (H3), washers (H2) and nut (H4) to secure
(K) and the bars on the second roof.
(H2)
x 8
M6 flat washer
(H3)
x 4
M6 x 40 screw
(H4)
x 4
M6 nut
K
J
K
H2
H3
H4
K
J
Fig 8.2
Fig 8.1