C4
C3
C4
C3
C2
C1
C1
C2
E1
E1
E2
E2
E2
E2
Step 4
E1
E1
A
A
A
A
C4
B
C1
E2
C3
C2
E1
AA
AA
AA
AA
E2
E1
C4
C1
AA
AA
E1
E2
C3
C2
Fig 9.1
Fig 10.1
Fig 9.2
Fig 10.2
Fig 9.1
Fig 9.2
Fig 10.1
Fig 10.2
4.1. Connect the Lintels (C1/C2) to the Top Cover
（
B
）
with Bolt (AA), as seen in Fig 9.1-Fig 9.2
；
4.2. Connect the Left-Support Bar (E1) to the Left-Short Lintel (C1) and the Post (A) with Bolt (AA), as
seen in Fig 10.1
；
4.3. Connect the Right-Support Bar (E2) to the Right - Short Lintel (C2) and the Post (A) with Bolt (AA),
as seen in Fig 10.2.
E1x2
E2x2
AAx32
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