Heights and. Scaffolding

Transcription

1 CWP Crew Leader Safety Orientation B E A N E X A M P L E, B E A N A U T H O R I T Y. A B O V E A L L, B E S A F E. Heights and Scaffolding

2 Outline Safety on Heights Stairs and Access Points Temporary Barricades Ladders Scaffolding Ladder-Frame Scaffolds Pumpjack Scaffolds

3 Safety on Heights Our Policy: Only those crews working on the exterior of the Blitz, exterior siding, and exterior painting have any need to be on heights. Every volunteer working on heights must get a quick safety orientation from their crew leader on how to use ladders or scaffolding, as the case merits. Only volunteers over the age of 18 are allowed to work on heights of more than six feet off the ground. This includes all extension ladders and scaffolding. Many tasks involving step ladders can still be performed. Only volunteers who are comfortable on heights should work there. Remember: Heights safety isn t just about working safely up high it s also ensuring the safety of everyone below.

4 Stairs and Access Points Stairs Ensure all volunteers are using the provided stairs to gain access to porches and between each floor of the homes. Make sure no one is bypassing, jumping, climbing, etc. Access Points Any access point not equipped with a stair should be installed by a designated/trained leader, inspected by a HFHMD staff member, and clearly accessible. This includes: ladders to pump jack scaffolding, ladders to second stories, ladders to roof access, etc. Do not allow volunteers to bypass or alter these access points.

5 Temporary barricades on the Blitz building Barricades to Prevent Falls All openings in decking will be completely covered or barricaded unless actively being used as an access point. All openings in walls where a fall could result in a 6-foot or greater drop will be barricaded with horizontal bracing at 42 unless actively being used as an access point. This includes all windows, first and second story. In a framed home before drywall installation, interior walls around stair wells must have horizontal bracing at 24 and 42 to prevent a volunteer falling through. All barricades and openings will be marked with bright paint or caution tape. Do not allow volunteers to bypass, alter, or remove these barricades. Habitat staff will be responsible for supervising the installation of this barricading. Crew Leaders and Unit Leaders are responsible for maintaining it (and ensuring no over-enthusiastic volunteers take it down too soon).

6 Ladders General Ladder Safety Use ladders for the purposes for which they were designed. Do not use ladders for skids, walkways, braces, or workbenches. Make sure ladder size meets job demands. HFHMD will use Class I ladders or better. Keep your body near the middle of the ladder; avoid leaning off the edge. Move the ladder frequently so as not to be tempted to lean too far. Do not stand or sit on the top two rungs or platform of any ladder. Maintain three points of contact while working on or ascending/descending a ladder. Do not carry anything that will prevent holding on with both hands while ascending or descending the ladder; use a tool belt or a tool bag to lift tools. Only one person on a ladder at a time. If it becomes necessary to place a ladder in or over a doorway, barricade the door to prevent anyone accidentally knocking the ladder. Remove broken ladders from service and notify an HFHMD staff member. Do not use ladders in high wind or dangerous weather conditions. Work on ladders may be called to a stop at the discretion of the HFHMD Construction Manager. If a ladder is not currently in use, lay it down so it cannot fall over. This also indicates that another crew member can use it and they will be in-demand items!

7 Ladders A-Frame Step Ladders Do not use stepladders as leaning ladders; always open all four feet and lock spreaders in place. Place ladders in a level condition. Never use material to support a leg of a ladder on an uneven surface; always dig beneath feet to level ladder. Do not place tools or materials on steps or top platform of stepladders. Never climb or work on the back of an A-frame ladder. Extension / Leaning Ladders Use proper angles with any non-self-supporting ladder. Explain the four-to-one rule: for every four feet of height, move the bottom of the ladder one foot from the wall. For practical set-up, standing with your toes touching the base of the ladder and with a straight back and straight arms you should be able to hold the rungs or sides of the ladder. Always secure the bottom of a leaning ladder. On uneven or loose ground (anything other than wood or concrete), always secure bottom by digging under feet into ground and reversing ladder feet to dig in. On permanent surfaces (wood or concrete), attach a piece of lumber to floor behind feet to prevent them from sliding. Extension ladders used as access points must be secured at the bottom and top. Use two nails or rope/wire to prevent to of ladder from moving. The top of an extension ladder must extend at least three feet beyond the supporting object when used as access to an elevated work area. Before climbing extension ladders make sure latches are properly engaged. Extension ladders must be overlapped a minimum of three rungs. Do not use top sections of extension ladders separately. Remember: you will be responsible for explaining these guidelines as well as inspecting and enforcing them!

8 Scaffolding The CWP will use a combination of pump jack and ladder-frame scaffolding. Much of this will already be assembled, but as work progresses during the week scaffolding will be removed from building 13 and erected around building 10. There will be one HFHMD staff supervisor in charge of dismantling, erecting, and inspecting ALL scaffolding on site. There will be one crew that assists in this task. Absolutely no one should dismantle, erect, or adjust scaffolding without the direct supervision of the HFMD Scaffolding Safety Supervisor. Only those volunteers who have been designated as scaffolding crews and trained by designated Crew Leaders are allowed to work on scaffolding. This will only be Blitz crews, siding crews, and exterior painting crews. These crews will get a separate scaffolding safety orientation from you each day. Crew Leaders will be responsible for: Training their crews to work safely on the scaffolding, and Trouble-shooting potential safety hazards during that work.

9 Ladder-Frame Scaffolding Guidelines and common concerns Working platform areas of the scaffold must be fully planked. No volunteer may walk or work on any sections which do not have all three aluminum planks in place. Wind latches on the underside of platform pieces must always be engaged when platforms are installed on scaffolding. These latches not only protect against high wind but also serve to keep sections locked, plumb, and square. Each level of scaffold should be fully braced with diagonal supports. The only exception is the structure-facing side of the working platform level. When this level of bracing is removed, all other levels above and below must be completely braced. Meaning, if there are multiple crews working on multiple levels, only one level may remove the diagonal bracing at a time. All others must work around it. The base of the system must always be fully braced, no exceptions.

10 Ladder-Frame Scaffolding a Visual: Parts and Operation

11 Ladder-Frame Scaffolding Safe Work Practices Do not overload scaffolding with people or materials. Do not allow tools, materials, or debris to accumulate on scaffold. Never use cross-braces to gain access to scaffolding; always use approved ladder sections. Always maintain three points of contact while climbing ladder sections. Never carry tools or materials while climbing. Have teams use ropes and buckets to pass up tools and hardware. Have entire team help pass up large material. Scaffolding should not be used as a cut station. There is not enough room on site during this event to cordon off a safe No- Walk/No-Work section under scaffolding. Do not use scaffolding in high wind or dangerous weather conditions. Work on scaffolding may be called to a stop at the discretion of the HFHMD Construction Manager.

12 Pump Jack Scaffolding Guidelines and common concerns HFHMD Scaffolding Supervisor is responsible for: Installation and removal of pump jack scaffolding. Inspecting safety guidelines while work is being done. Crew Leaders are responsible for: Inspecting safety guidelines of their crew while work is being done. Adjusting the work platforms up and down as necessary. Providing secure access to work platforms from a window or ladder.

13 Pump Jack Scaffolding Guidelines and common concerns Adjusting Pump Jack platforms Remove all volunteers from work platforms before adjusting height except those required to help adjust it. This is a perfect opportunity to refill water and supplies. Ensure there is no one directly underneath scaffolding while adjusting. Adjust all points of work platform simultaneously and evenly so that the entire platform is level as it is raised or lowered. Check that all platforms and benches are still securely supported by jacks after every adjustment. After adjusting system, lock pump jack arms in upright position. Providing access points Access points can be windows or ladders. Ladders used as access must have adequate handrail surface (bench or end rail system) within reach. Adjust ladder height and fastening after every pump jack height adjustment. Secure the base of the ladder such that standard movement of the pump jack system during work can t alter the angle or security of the ladder. Secure the top of the ladder to the scaffolding platform with wire. Remove this wire and steady the ladder before every height adjustment.

14 Pump Jack Scaffolding a Visual: Parts and Operation

15 Pump Jack Scaffolding Safe Work Practices Do not overload scaffolding with people or materials. Do not allow unnecessary tools, materials, or any debris to accumulate on scaffold. Do not store tools or materials on safety net. Do not overload bench area. Volunteers are not to change, remove, or adjust height of scaffolding system unless authorized and supervised by a designated/trained Crew Leader. Workers may sit or stand on platform surfaces but are not allowed to sit or stand on bench surfaces.