Deck 1. Ledger Board 길이는? mm 2. Joist Size는? 2"x6"2"x8"2"x10"2"x12" 3. Joist 길이는? 8'10'12'14'16'18'20' 4. Joist 간격은? 12 "O.C16 "O.C24 "O.C 5. Decking Size는? 2"x6"2"x8"2"x10"2"x12" 6. Post Size는? 4"x4"4"x6"6"x6" 7. Post 길이는? 2'4'6'8'10'12' 8. Beam Size는? 4"x6"4"x8"4"x10"4"x12" 9. Handrail 총길이는? mm