SCAFFOLDING ESSENTIALS & Components.pdf.pdf
- 1. SCAFFOLDING ESSENTIALS & COMPONENTS SUPPORT SCAFFOLD Shared By: HSE INSIDER https://www.linkedin.com/company/hse-insider
- 2. 1. Sole Plate Timber: 22 cm. Wide / 3.5 cm. Thick Steel: 22 cm. Wide / 2.0 cm. Thick COMPONENTS OF SCAFFOLDINGS: 2. Base Plate Minimum Width 12 cm. Use below each standard Shared By: HSE INSIDER https://www.linkedin.com/company/hse-insider
- 3. COMPONENTS OF SCAFFOLDINGS: 3. Standard / Post Bay Length: Light Duty 2.4 m Medium Duty 2.1m Heavy Duty 2.8 m Max 4. Ledger / Runner Fix to standards with right angle couplers. Place the lowest ledgers approx. 15 cm. above the scaffold base.
- 4. COMPONENTS OF SCAFFOLDINGS: 5. Transom / Bearer Each board shall have at least Three (3) supports unless its thickness or span is enough to prevent sagging under load. 6. Planks Aluminum: min. 22.5 cm. W/ 3.8 cm. Thickness. Metal Steel: 3.8 cm. H/ 0.2 cm. Thickness
- 5. COMPONENTS OF SCAFFOLDINGS: 7. Scaffold Access When scaffold platforms are more than 0.6 M Adequate access to be provided. 8. Access / Egress Ladders The horizontal travel distance to the nearest exit, (i.e. ladder) exceeds 15 M. Each elevated work area shall have at least two means of exit
- 6. COMPONENTS OF SCAFFOLDINGS: 9. Jointed Standards & Ledgers Joints in standard shall be made with a Joint pins or with sleeve couplers. Joints in ledger shall be made with sleeve couplers. The overlap length in joints between standards should be at least 15 CM. Shared By: HSE INSIDER https://www.linkedin.com/company/hse-insider
- 7. COMPONENTS OF SCAFFOLDINGS: GUARDRAIL TOE BOARD MIDRAIL 10. Guardrail: Top rail: Install between 91 to 115 cm H/ withstanding a force of at least 200 lbs (approx. 890 N) Mid-rail: Install at least 53.34 cm H / withstanding a force of at least 150 lbs. Toe Board: At least 15 cm H / withstand 50 Pound / Holes be no larger than 2.5 cm in one direction
- 8. COMPONENTS OF SCAFFOLDINGS 11. Overhang of the Scaffolding Board Nominal Thickness of Boards (cm): 3.8 / 5.0 / 6.3 Minimum Overhang (cm): 5 / 5 / 5 Maximum Overhang (cm): 15 / 20 / 25 12. Safe Ladder Access Stand at an angle of 4 vertical to 1 horizontal (76 degree to the horizontal). Ladders shall project at least 105 cm above the top. Landing places to provide at vertical intervals of not more than 9.0 meters
- 9. COMPONENTS OF SCAFFOLDINGS: 13. Access Opening At least 45 cm but MAX 50 cm In Width 60 cm Long 14. Scaffolding Boards No gap less than 2.5 cm between scaffolding boards shall be maintained. Fix firmly by using steel clamps or steel wires. Shared By: HSE INSIDER https://www.linkedin.com/company/hse-insider
- 10. COMPONENTS OF SCAFFOLDINGS: 15. Scaffolding & Excavation No scaffold shall be erected at less than 3 M from an existing excavation INSULATED LINE VOLTAGE UNINSULATED LINE VOLTAGE MINIMUM DISTANCE ALTERNATIVES Less than 300 volts Less than 60 kv 0.9 Meter 2 times the length of the line insulator, but never less than 3.1 meters. 300 volts to 60kv More than 60 kv 3.1 Meter More than 60 kv 3.1 Meter plus 1.0cm for each 1.0kv over 50 kv 16. Clearance between Scaffold & Power Lines
- 11. COMPONENTS OF SCAFFOLDINGS: STAIRWAY DIMENSION Dimension Steps Class A (CM) Steps Class B (CM) Width (s) 12.5 £ s < 16.5 s ³ s 16.5 Height (g) 15 £ g < 175 g ³ s 17.5 Minimum clear width 50 cm 17. Stairway for Access 18. Tying Scaffolding The spacing of lines of ties shall not exceed 8.5 M either vertically or horizontally
- 12. COMPONENTS OF SCAFFOLDINGS: Nominal Thickness of Boards (CM): 3.8 / 5 / 6.3 Maximum Span between Transom (M): 1.5 / 2.6 / 3.25 19. Span Between Transom Work on or from scaffolds is prohibited during storms or high winds (wind speed more than 65 km/h). 20. Wind Speed
- 13. COMPONENTS OF SCAFFOLDINGS: ANCHOR TIE BOX TIE THROUGH TIE REVEAL TIE 21. TYPE OF TIES:
- 14. COMPONENTS OF SCAFFOLDINGS: GUARDRAIL PLANKS LEDGER (RUNNER) POST KNEE BRACE BEARER PLAIN BRACE CROSS BRACE SOLE PLATE LONGITUDINAL BRACE 22. TYPE OF BRACINGS Shared By: HSE INSIDER
- 15. COMPONENTS OF SCAFFOLDINGS: TOWER SCAFFOLDS (MOBILE/STATIC) ACCESS HOLE (OR HINGED) PLAIN BRACE UNDER DECK PLAIN BRACE TOPRAIL MIDRAIL TOEBOARD WIRE LASHING (TOP, MIDDLE AND BOTTOM OF LADDER LADDER SHOULD BE FIXED TO NARROWER WIDTH OF TOWER TRANSVERSE (LEDGER) BRACING LOCKING CASTERS
- 16. COMPONENTS OF SCAFFOLDINGS: Extension of Ladder The ladder shall extend at least 105 cm above platform level to provide a handhold at the stepping off point.
- 17. COMPONENTS OF SCAFFOLDINGS: The maximum free- standing height for mobile towers shall be 9.6 m and for static towers 12 m. Maximum Free- Standing Height (Tower & Static) Maximum Ratio of Height to Base for Tower TYPE OF TOWER H / B (LEAST) Static towers used indoors 4:1 Static towers used outdoors 3.5: 1 Mobile towers used indoors 3.5: 1 Mobile towers used outdoors 3.5: 1
- 18. COMPONENTS OF SCAFFOLDINGS: Lift Height Lifts shall not exceed 2.7 m on static or mobile towers Wheels / Swivel-type Casters Shall not be less than 12.5 cmin diameter Shared By: HSE INSIDER
- 19. COMPONENTS OF SCAFFOLDINGS: HOOK TYPE PULLEY Shared By: HSE INSIDER