☛ 1. It should be erected on levels firm ground

☛ 2. It erected by trained / skilled person

☛ 3. It is constructed using metal pipes and wooden boards

☛ 4. It should be design and constructed from good and sound material

☛ 5. Not to be erected on loose earth

☛ 6. Clamps should fixed

☛ 7. Properly bracing

☛ 8. Sole plate is necessary the base of vertical pipe