14 inches tall Unless guardrail systems and/or personal fall arrest systems are utilized in accordance with paragraph (g) of this section, the front edge of all platforms should not be more than 14 inches (36 cm) from the face of the work, except as specified in paragraphs (b) I and (ii) of this section. The rear edge of scaffold shall be at least 3 feet (91 cm) from any exterior wall.
Scaffolding must be erected and dismantled in a safe manner to prevent injury. Never use ropes or cables to support scaffolding. Use established scaffolding sites and avoid trespassing. Keep yourself safe by using proper equipment, training, and supervision when working on buildings.
Scaffolding is used for building construction purposes. It provides a stable working surface that is higher than the surrounding area. Scaffolding also allows workers to get closer to the structure being built or repaired. Scaffolding is divided into three main types: platform, gantry, and aerial.
A platform is a flat surface supported only by joists or beams. The height can be adjusted by adding or removing boards or blocks. Platforms are used for temporary work surfaces during construction or repair projects. They are usually made of wood but can be constructed out of other materials if necessary.
Granary scaffolds are similar to platform scaffolds except they have an internal framework of steel or aluminum tubing instead of wooden joists or beams.
How high should scaffold guardrails be? For construction work, the top guardrail shall be at least 950mm above the working platform, with a maximum gap of 470mm between the top rail and the intermediate rail. For maintenance work on buildings under 10 metres high, the top guardrail can be as low as 700mm from the ground.
The regulations also specify that where there are more than one working platform they must be at least 250mm apart. The driver of a vehicle using these areas must not approach within 20m of any edge.
Scaffold planning is an important part of any project. If you're not sure about how high your scaffold needs to be, ask for advice from your local building control department or scaffold supplier. They will be able to help guide you through the process.
Guardrail height: For scaffolds built and placed in operation after January 1, 2000, the toprail height must be between 38 inches (0.9 meters) and 45 inches (1.2 meters). Before then, the requirement was 25 inches (63 centimeters).
Scaffold height: The minimum height of any scaffolding structure is 9 feet 6 inches (2.9 meters), except that a maximum of 10 stories can be constructed with guardrails at both their maximum extension. The maximum height includes any roof structure used to cover workers on the scaffold.
The requirements for rail height apply to all scaffolds, regardless of material used to construct them. Steel scaffolds are required to have guardrails that extend no more than 4 inches (10 centimeters) past the face of the post to which they are attached.
Wooden scaffolds must be at least 3/4-inch thick at the base and one inch at the top.
Metal scaffolds must be at least 1-inch thick throughout their length.
Scaffolds must be erected by a professional contractor or other person as defined by your state's building code.
Scaffolds must be maintained by a professional contractor or other person as defined by your state's building code.
The parts that follow are the most pertinent to guardrail construction. All of these OSHA regulations are met or exceeded by our railing system. 1910.29 (b)- A conventional railing must have a vertical height of 42 inches and must consist of a top rail, an intermediate rail, and posts. The bottom end of the top rail should be flat so it can rest on the ground. The bottom end of the intermediate rail should be flat so it can rest on the ground. The post tops should be flat so they can rest on the ground.
The total combined length of the top, intermediate, and bottom rails must be at least 96 inches. The distance between the center of one post and the center of the next-higher post must be no less than 12 inches. The distance between the center of any two adjacent posts must be at least 36 inches. The railing must be straight along its entire length. No post may protrude beyond the face of its counterpart.
Posts must be hollow at the base and sealed off from the weather. They should be made of either steel or concrete, with concrete being preferred because it is more resistant to breakage. Hollow metal posts should be painted red or black. The top of each post should be flat so it can sit on the ground. The bottom edge of each post should be chamfered (beveled) to prevent it from digging into the ground when weight is placed on it.
Handrails must be no higher than 37 inches (94 cm) and no lower than 30 inches (76 cm) from the top surface of the handrail to the surface of the tread, in line with the face of the riser at the tread's forward edge. The distance between each post along the rail length should be within 1-1/4 inches (31 mm). A post may be as close as 3-1/4 inches (88 mm) from the next-closest post.
You cannot have a stairway without risers or stairs, so they are an important part of any staircase design. There are several different types of risers used on stairs; these include plain, square, and half. The type of riser you choose depends mostly on how much space you have available and what look you want to achieve with your staircase.
The maximum rise allowed for a single flight of stairs is 42 inches (107 cm), including the risers. If you need to make multiple flights of stairs, such as in a large house, you can use multiple stairways, each 12 inches (30 cm) wide. These can be combined into one main staircase with additional landings.
The maximum depth of a stairway is 48 inches (122 cm), including the risers. Stairways that are this deep can be difficult or impossible to build depending on local building codes and requirements.
The current standard, 29 CFR 1910.23(e)(iii), specifies in part: "The length of brackets should be such that there is a clearance of at least 3 inches between the handrail and the wall or any protrusion thereon." According to 29 CFR 1910.23(e), "all handrails and railings shall have a clearance of not less than 3...inches from floor to top of railing."
The regulations do not specify a maximum gap between handholds on ladder rungs. However, OSHA has established a general duty clause for ladders which requires that all steps must be kept free from debris. This includes the requirement that there be a two-inch space between steps.
Ladders are used for many different tasks around a workplace. Therefore, it is important that they are safe for users regardless of their job role. Workers need to use caution when climbing up or down a ladder because they are often exposed to dangers in areas where others may not see them. For example, a worker balancing a load on his back may fall off the end of the ladder if he does not keep clear sight of its bottom rung. Young workers may be especially likely to try something new (such as standing on a ladder) without considering the consequences. Employees who work at heights should take special care not to be distracted by phones or conversations while on the job.
Ladders are mechanical devices that can cause injuries if not used properly. Training employees on how to use equipment like ladders safely is essential to preventing injuries.