osha walkway slope. When engaged in roofing work on low-slope roofs 50 feet or less in width, the use of a safety monitoring system without a warning line system is permitted. osha walkway slope

 
 When engaged in roofing work on low-slope roofs 50 feet or less in width, the use of a safety monitoring system without a warning line system is permittedosha walkway slope 3306

Wheelchair ramp degree slope ratios are provided in the ADA guideline. Figure 222. 1. Paragraph (e)(5)(iii) also requires that if the slope of a ramp or walkway is. Ladders without cages or in wells should have at least 15 inches clear in each direction from the center of the ladder. OSHA has a specific definition for low-sloped roofs as follows: “Means a roof that has a slope less than or equal to a ratio of 4 in 12 (vertical to horizontal)”. 451(e)(5)(iii)] Reply: In redesignating §1910. Detectable warning elements must extend the full width of the ramp. A walkway handrail instead guardrail system is requested to anything catwalks height than 4' above ampere lower level. Here are the OSHA standards that require EAPs: • Process Safety Management of Highly Hazardous Chemicals - 1910. Part 4 Compensation to Injured Workers and Their Dependants. 2 Design Criteria 3. B. Walking surfaces must have running slopes not steeper than 1:20, see 403. 22 m); 1918. Working Area. Operating the Forklift. Landings/Raised walkways: Any surface that has a drop off needs to have curbs, walls, railings, or projecting surfaces that prevent people from slipping off the edge. in elevation in portions of the means of egress that serve nonambulatory persons shall be by means of a ramp or sloped walkway. 28(b)(13) Work on low-slope roofs and 1910. A straight walkway down a steep slope does not serve as a good and safe idea. These landings should be at least as wide as the ramp and at least 60 inches long. High-gravity (serious) violation penalties are $14,502. • The presence of traffic or a body of water at the bottom of a slope adjacent to a pedestrian path. 1. Because interpreta-tions and enforcement policy may change over time, you should consult. 1 This document is intended to provide basic safety guidelines related to working on hazardous terrain, especially that of steep slopes (e. OSHA sections 1926. We have not changed or modified the standard language. Ladders without cages or in wells should have at least 15 inches clear in each direction from the center of the ladder. Gravity-based OSHA Penalties. Kee Walk with Guardrail provides a safe pathway that requires no formal training or experience [it is passive] and “collectively” protects people when working at height. (Title 24, Part 2, Section 2-3306 (a) without "Note. 451 (e) (5) (ii) - No ramp or walkway shall be inclined more than a slope of one (1) vertical to three (3) horizontal (20 degrees above the horizontal). If work areas are too narrow for 18-inch platforms or walkways, you can use narrower platforms, but workers must be protected from falling with guardrails or personal fall-arrest systems . These steeper slopes are also more difficult to maintain. An exit must lead directly outside or to a street, walkway, refuge area, or to an open space with access to the outside. As you may be aware, in April 10, 1990, OSHA published a notice of proposed rulemaking (NPRM) to revise its General Industry safety standard for walking and working surfaces of completed buildings (29 CFR 1910, "Walking and Working Surfaces and Personal Protective Equipment (Fall Protection Systems; Notice of Proposed. , 1:12). An exit route generally consists of three parts: access to the exit; the exit, which provides a way of travel out of the workplace; and the way from the exit to the outside. [29 CFR 1926. Use established pedestrian walkways with guard rails and strictly enforce their use. Portions of accessible routes with running slopes steeper than 5% also must be treated as ramps. Steeper slopes may require additional reinforcements or terracing to ensure stability. Download the PDF to learn more about how to prevent. 3. 83 in dry conditions and 0. The maximum angle of slope of a walkway shall be as follows: Level Walkway: Cannot exceed 3° in any direction. Consider the slope ratio requirement your local regulations demand. 1910. Introduction. (Title 24, Part 2, Section 2-3306(b)(1). For example, suppose the vertical rise is 10”. Finding the perfect panel length isn't only important for safety, it can also lead to significant cost reductions. Sloping and benching proportions should match the soil type. Although many people think of falls as occurring from one level to another level. Environmental Health & Safety Office Walking and Working Surfaces Guide 07/2015 2 o On stairways less than 44 inches wide having both sides open, one stair railing on each side. It is sometimes referred to as a "ship's ladder. passing space is to be provided at intervals no greater than 200 ft. 6(3)(a) if space limitations prohibit the use of a 1:12 slope or less. A low-gravity (less serious) violation fine is $6,215 for each incurred penalty. 33 percent), all sidewalks must be planned with the least amount of running slope feasible, as previously. The width of ramps that are part of a means of egress may further be determined by applicable life safety codes and requirements for minimum exit widths greater than 36”. 3. The main safety feature of a catwalk on prevent falling objects is a toe board. Slip resistance of walkways. Figure 1 shows a temporary guardrail system for a walkway (see 29 CFR 1926. The OSHA walkway requirements are different than those required for vehicles, so consider this too. Cross slope cannot exceed 7°. Specific aisle requirements are made for industrial aisles. This program establishes guidelines and procedures relating to safety on excavation sites at Virginia Tech. A walkway is defined as a continuous way designated for. as a footwalk along shafting or a walkway between buildings. wide. The solution is to change the way we plan, design, and manage infrastructure. if the slope is more than 20 degrees to the horizontal or if employees could fall more than four feet (1Slope [§405. Stair tread slope (out of level on walking surface) - (slope or "rise" must be <= 1 in 48)-- Source: IRC. Gangway. 451(e)(5)(ii) - "No ramp or walkway shall be inclined more than a slope of one vertical to three horizontal (20 degrees above the horizontal). Safety is a key factor in planning and design of roadway facilities for pedestrians as they are particularly vulnerable street users. 8m) or more above lower levels shall be protected from falling by guardrail systems, safety net systems, personal fall arrest systems, or a combination of warning line system. The walkway is used as access for exterior doors on the elevated level. OSHA has designated three work zones on low-slope roofs with. 651 (c) (2) Means of egress from trench excavations. All other simple slope, compound slope, and vertically sided lower portion excavations shall be in accordance with the other options permitted under § 1926. Semitrailers, flatbeds and straight trucks all have bed heights that closely align with 48-inch-high platforms, so loading dock platforms most commonly are 44 to 48 inches high. The bridge shall be set from the ground uphill or downhill to the landing location at a slope no greater than 6 ft horizontal to 1 ft vertical;. 1 Criteria for Changes in Level along Sidewalks and Walkways. Occupational Safety and Health Administration 200 Constitution Ave NW Washington, DC 20210 1-800-321-OSHA 1-800-321-6742. gov; USA. This is important because the OSHA definition is used as a basis for implementing low-slope fall-protection measures, such as warning-line systems and safety monitors. Part 2 Occupational Health and Safety. Part 2 Occupational Health and Safety; Part 3 Workers' Compensation System;. 21(b), if the slope is more than 20 degrees to the horizontal or if employees could fall more than four feet (1. 5Kn over an area 100mm. (See 1926. 29 (b) (1) The top edge height of top rails, or equivalent guardrail system members, are 42 inches (107 cm), plus or minus 3 inches (8 cm), above the walking-working surface. In terms of width, industrial aisles should be at least 4 feet and at least 3 feet wider than the largest equipment that has to pass through them. On sites with multiple parking facilities, the minimum number of accessible spaces must be calculated separately for each parking facility instead of on the combined total of parking spaces provided on the site. To accommodate drainage, the entire section, including shoulders, should transition through curves. Enclosed spaces attached or immediately adjacent to the bleacher-type seating comprise, in theThe ADA requires that all business and public use wheelchair ramps adhere to a 1:12 slope ratio, meaning that for every inch of vertical rise there must be 12 horizontal inches (one foot) of ramp. that is compliant in slope, counter slope, vertical clearances, turning radii and surface. 451(e)(5)(iii) If the slope of a ramp or a walkway is steeper than one (1) vertical in eight (8) horizontal, the ramp or walkway shall have cleats not more than fourteen (14) inches (35 cm) apart which are. Each working level of a scaffold must be fully planked or decked. ADA ramps must be at least 36 inches wide, which allows people using wheelchairs or other mobility devices to safely navigate the ramp. gov Walking-Working Surfaces: Designated areas What is a designated area? When employees work on a low-slope roof, a non-traditional type of fall protection (the designated Guardrail systems. The raised button surface we use to make ramps and treads has a COF of 0. 8 m) from the unprotected side or edge that is parallel to the direction in which the mechanical equipment is operated, and not less than 10 feet (3 m) from the unprotected side or edge that is. 3. OSHA says exposure to these types of hazards pose a. 22 (b); 1910. Doors serving a means of egress system shall meet the requirements of this section and Section 1022. That fall protection could include guardrails, safety net. 91-596, encourages states to develop and operate, under OSHA guidance, their own job safety and health plans. 0 ACTIVITY DESCRIPTION 1. Ramps, Runways, and Other Walkways – 29 CFR 1926. 3]1010. 2. Table 2. 5” H. All benched excavations 20 feet or less in depth shall have a maximum allowable slope of 3/4 to 1 and maximum bench dimensions. The Roadway Work Zone Safety and Health Partners. Authority:. Walking-working surfaces are maintained free of hazards such as sharp or protruding objects, loose boards, corrosion, leaks, spills, snow, and ice. rise is not acceptable. It covers the key ADA requirements, design standards, and best practices for accommodating pedestrians with disabilities. Dorothy's steps in her yard were problematic for visitors, so the solution was a simple exterior handrail. ASME A17. This can be done by hand or with the help of a machine. Type A soil requires 3 feet horizontal to 4 feet vertical (3/4:1). 68(c)(3)(v) – and this regulation lacks a. Ramps that measure more than 6 feet above lower levels (areas below the level at which a worker is working and could fall) should be equipped with guardrail systems. If you are building a ramp at home, the maximum ramp slope is 3:12 rise in inches and 15-degree angle allowable slope. A 20 Fire Extinguishers - Fire extinguishers are accessible, signed, and correctly located, with operating instructions and current inspection tags. Drivers of errant vehicles can steer, brake, and recover from a run-off-the. The load is then to be increased to 2. OSHA defines low slope roofs as those having a vertical rise to horizontal run ratio of 4:12 or less. Working Area. Each employee on a walkway located within a scaffold shall be protected by a guardrail system (with minimum 200 pound toprail capacity) installed within 9½ inches (24. Figure 4-5: Impacts of Sidewalk Cross Slope On Pedestrian Stability. In the case of manufacturing operations, these access catwalks make extended access possible throughout the. Whether you're just marking the edges of your aisles or you. The hill, ridge or escarpment is 60 feet (18 288 mm) or greater in height for Exposure B, 30 feet (9144 mm) or greater in height for Exposure C, and 15 feet (4572 mm) or greater in height for Exposure D. So, if the low-slope roof is to be accessed for some kind of maintenance work (not. 8 degree angle slope. If the slope of a ramp or a walkway is steeper than one (1) vertical in eight (8) horizontal, the ramp or walkway shall have cleats not more than fourteen (14) inches (35 cm). Other components of accessible routes, such as ramps (405) and curb ramps (406), are permitted to be more steeply sloped. (a) Scope. Specifically, workroom floors have always been required to be kept clean and dry. 2]" For curb ramps constructed after January 26, 1992 (post-ADA), the slope must be 8. ) (c. NE Salem, OR 97301-3882 Phone: 503-378-3272 Toll-free: 800-922-2689 Fax: 503-947-7461 FACT SHEET osha. 652 Subpart P-Excavations, OSHA includes these rules on the installation and use of trench boxes: A contractor should install a trench box in a way that restricts its. For all non-egress exterior doors, the 2003 code update allows a 7-3/4-in. 29 - Fall protection systems real falling object protection-criteria and practices. This resource has ALL the OSHA safety construction regs organized and available to download free. 1 cm) of and along at least one side of the walkway. 5 percent. 2. the dock. Highlights. The technical requirements for trails, picnic and camping facilities, viewing areas, and beach access routes are in chapter 10 of the ABA Standards. 81 Friday, No. Advisory 402. The OSHA Technical Manual (OTM) provides technical information about workplace hazards and controls to OSHA’s Compliance Safety and Health Officers (CSHOs). ( c) Protection from falling objects. 8 m) or more above a lower level where leading edges are under construction, but who is not engaged in the leading edge work, shall be protected from falling by a guardrail system, safety net system, or personal fall arrest system. • Low-slope roof means a roof that has a slope less than or equal to a . The specific standard that would apply here would be 1910. Abrupt changes in elevation at the top or bottom should be avoided. 1. Excavating is recognized as one of the most hazardous construction operations. 1926. The differing types and fundamentals of powered trucks. Aluminum roof access walkways for safety are often a key part of creating a safe environment for people working at heights. SIMPLE SLOPE--SHORT TERM. AFR 88-16 (superseded by current ETL 04-2) Interested in learning more, contact Laure Majors at busdev@fsb-ae. 0% maximum) to meet ADA standards. 17 (e) When employees are working in, on, or under a railcar, positive means shall be taken to protect them from exposure to impact from moving railcars. The cross slope of the ramp run itself may not exceed 2 percent (1:50). 2931. 22 (a) Whenever practicable, a gangway of not less than 20 inches (. Which does OSHA need to. gov; Coronavirus Resources; Disaster Recovery Assistance; DisasterAssistance. 5. Slope is usually expressed as the ratio of the ramp’s height, or rise, to its length, or run. OSHA has a specific definition for low-sloped roofs as follows: “Means a roof that has a slope less than or equal to a ratio of 4 in 12 (vertical to horizontal)”. Close. When engaged in roofing work on low-slope roofs 50 feet or less in width, the use of a safety monitoring system without a warning line system is permitted. The maximum slope of transition slopes is 1:10, measured parallel with and adjacent to the curb line. However, no such carte blanche rule exists and never has in the OSHA regulations. Next, decide on the design of your walkway. Advisory 402. 22 (b) Loads. Limited studies have examined the effect of the slope of walkways on pedestrian’s speed. The climbing side of the ladder should have at least 36 inches from the center of the rungs for a slope of 76. 223 November 18, 2016 Part VII Book 3 of 3 Books Pages 82493-83106 Department of Labor ----- Occupational Safety and Health Administration ----- 29 CFR. It isSlope safety is key. Safety net systems and their use shall comply with the following provisions: 1926. Designed to Exceed Global Standards. National Trench Safety has a complete line of walkways, bridges, and accessories including wheel kits and ladder access units. 21 Scope and definitions. 1926. For example, ADA requires a minimum slope of 1:20 and a maximum of 1:12. 272OSHA’s proposed new rule will require that: a. No more than 1 inch of space can be present between each scaffold unit unless the employer can show that more space was needed. 4. Beth Strella. running slope is the slope in the direction of pedestrian travel on the ramp run. It also can be expressed as a percentage, pitch, or in. BCA interpretation for a ramp in accordance with AS 1428. • Are inclined walkways of non-skid material or provided with cleats? (56. First, determine if the roof is a “low-slope roof,” defined as a slope of 4:12 or less. 5 COF) is for manlift platforms in 29CFR1910. If the slope of a ramp or a walkway is steeper than one (1) vertical in eight (8) horizontal, the ramp or walkway shall have cleats not more than fourteen (14) inches (35 cm). This includes a range of free-standing roof edge railing systems and guardrails for metal roofs. 2 and 403. 20 as §1910. 5 COF) is for manlift platforms in 29CFR1910. [Federal Register Volume 81, Number 223 (Friday, November 18, 2016)] [Rules and Regulations] [Pages 82494-83006] From the Federal Register Online via the Government Publishing Office [[FR Doc No: 2016-24557] Vol. Step 1 – Plan The Route. General rules for ramps and runways: Keep them free from job junk (debris). Based on the research cited, the 3 percent maximum is reasonable. 1. Under §1910. Which does OSHA need to say about safely using forklift work platforms? It can be confusing. We will now cover some additional areas. 1 Assess the Slope. A sidewalk proposed within 2 ft. The sole OSHA walkway traction requirement (0. OSHA Instruction TED 01-00-015. ”. 652 to make the standard easier to understand, permit the use of performance criteria where possible, and provide construction employers with options when classifying soil and selecting employee. , LL. § 3273. OSHA. the scientific topic of “tribology”) surface roughness, asperities, slope, contours, draping, contact force magnitude, contact velocity and acceleration, hysteresis, damping, tearing, mechanical. Falls from heights and on the same level (a working surface) are among the leading causes of serious work-related injuries and deaths. AN point board, plus called adenine kickplate, is a vertical projection free the walking surface around the edges of the walkway. 3] Thick walls, casework, shelving, columns and other elements can cause doors or gates to be recessed. In offices, minimum height and width requirements apply to emergency exit aisles. OSHA did have a requirement for a slip resistance of 0. If the counter slope of a curb ramp exceeds 5. The employer must ensure: 1910. 2. RISERS must be uniform between landings, 30-50 deg, ≤ 9. Ramp: Any ramp that has a rise greater than 6 (inches) or a run greater than 72 (inches) needs to have ADA compliant handrail. S. What is the maximum height above a lower level that a jobsite walkway can be before it is required by OSHA to have handrails? 6 feet. The area shall be permanently maintained and identified as a safe dispersal area. OSHA regulations protect forklift operators and pedestrians in the workplace. the contractor provide for the safety of the public during construction. KATTWALK™ permanent walkway is a lightweight, non-corrosive aluminum walkway system which provides safe, designated access around the rooftop environment. 1. Low-slope roof. For instance, 3" rise divided by 36" run = . 24 that extends at least 36 inches (. Both walkways and sidewalks must have a minimum clear width of no less than six feet to prevent collisions; more space is better if the space is available. It also can be expressed as a percentage, pitch, or in degrees. 4. The ADA also defines lengthwise slope (the normal path a patron would traverse while passing by) for safety reasons. Search. 119 • Fixed Extinguishing Systems, General - 1910. 28; 1910. 29 CFR 1915. A modular roof walkway system that’s easy to install and designed to meet and exceed all OSHA regulations. (i. Additionally, ADA stipulates that no ramp can run. 451 (e) (5) (iii) - If the slope of a ramp or a walkway is steeper than one (1) vertical in eight (8) horizontal, the ramp or walkway shall have cleats not more than. 83 in dry conditions and 0. B56. g. Pedestrian’s speed is an important parameter for modelling and simulating pedestrians’ crowd movement under normal and emergency conditions. S. 91 m) above the upper landing surface and is. Appendix A is a summary of the salient aspects of the legislation applicable to the provision of safe slope access. 11 Controls. Curb Ramp. Note: Oregon OSHA did not adopt the federal OSHA definition of Low-slope roof. New Compliance Option Included (2) The street, walkway, refuge area, or open. 23 (b) General requirements for all ladders. The radius of curvature at the nosing or leading edge of treads shall not exceed 9/16 inch. 2 Design Imperative - Safety. Standard Specifications. Fire safety and evacuation plans shall be provided for all occupancies and buildings where required by the Florida Fire. SIMPLE SLOPE-. Low-slope roof is defined as a roof with a slope less than or equal to a ratio of 4 in 12. 04 of 10. 7. The slope of existing ramps cannot exceed a 1-foot rise per 8 feet of horizontal run. However, there must be extra height added to barriers that deflect. Walkways shall be properly sloped (drained) to eliminate pooling of water. 501 (Duty to have fall protection), 1926. Only by doing so can municipalities meet new demands within a fiscally responsible and environmentally sustainableAn example of an alternative fall protection measure allowed under 1926. For Landscape and Horticultural Services, use NAICS code 561730 in the NAICS search box. Be equipped with a railing meeting the requirements of § 1918. News and Events; Contact; Home;Occupational Safety and Health Administration, Department of Labor. , loss of vision prevents the individualThe top of all rooftop crossovers. Landings and steps should be level, with only a slight slope for drainage. The control zone and safety monitor systems are not to be employed on roofs steeper than 4 vertical to 12. • The presence of traffic or a body of water at the bottom of a slope adjacent to a pedestrian path. Safety net systems. AN point board, plus called adenine kickplate, is a vertical projection free the walking surface around the edges of the walkway. It does not have to be. For wheelchair use, of course, you can't have steps. The employer must ensure that each walking-working surface can support the maximum intended load for that surface. Dear Mr. This eTool* specifically provides information on OSHA's Powered Industrial Truck requirements [ 29 CFR 1910. EXCEPTION: Existing ramps may have width as required for stairways. If any obstruction within 18″ of the latch side projects more than 8″ from the face of a door or gate, maneuvering clearances for a forward approach must be provided. OSHA defines low-slope roofs as any roof that “has a slope less than or equal to 4 in 12 (vertical to horizontal). It is typically 2 feet. OSHA regulations pertaining to this installation include regulations 1910 and 1926. 24 that extends at least 36 inches (. The employer must ensure:The maximum running slope of a ramp run cannot exceed a ratio of 1:12. These passing spaces must measure at least 60 inches on all sides, and must be located at least every 200 feet. 1 - 5. It provides a safe, anti-slip, level walking surface to access areas of the roof and to safely walk across it. It's an opportunity to create a landscape masterpiece! But keeping the natural surroundings intact can also mean uneven surfaces. To calculate the ADA-required ramp length, multiply the vertical rise (10. Trench walls can be angled or sloped downward and/or include flat benches or steps. reasonably raise themselves. + More Info. 1- 2000 Safety Code for Elevators and Escalators,. If heavy loads are expected, the slope should not exceed 5%. Portions of accessible routes with running slopes steeper than 5% also must be treated as ramps. In addition, OSHA standard 29 CFR 1910. 500; 29 CFR 1926. Conveyor systems shall be equipped with an audible warning signal to be sounded immediately before. A ladder safety system usually consists of a carrier, safety sleeve, lanyard, connectors, and body harness. [ §404. 0) sets rules for measuring walkway slip resist; OSHA - (Dept of Labor CFR 1910. Exceptions may be made, but ADA requirements must be met. gov; Notification of EEO Violations. Here a black metal railing fades discreetly into the hillside landscaping. Place each hose and cord on walkways, provided the hoses and cords are covered by crossovers or other means that will prevent injury to employees and damage to the hoses and cords; or 1915. Excavations beyond the projected levee slopes but still within the critical area, should meet Federal, State and local criteria, COE safety manual and OSHA criteria. Emergency exits and routes are marked and unobstructed. OSHA, ANSI and ADA Regulations for Walkways and Surface. 3]. Often, when it is overcast or dark outside, it can be hard to see a walkway. The running slope is to be uniform along a run, although slight variations may occur with certain materials such as applicable OSHA standard requires it, OSHA strongly recommends that all employers have an EAP. Aisle markings are no exception. Next, decide on the design of your walkway. The ADA limits curb ramp steepness to no greater than 1:12 (an 8. Height. 2 Components. Be at least 132 inches wide. A customer. For outdoor stairways, treads must be slightly sloped so water will not accumulate on the stairs. The maximum slope of a ramp in new construction shall be 1:12. To be in compliance with OSHA catwalk requirements, all catwalks and raised work platforms must have toeboards at least 3 1/4 inches tall along. 8 m) or more above lower levels shall be protected from falling by a guardrail system, safety net system, or personal fall arrest system. California Occupational Safety and Cal/OSHA), Title 8, Health Administration (California Code of Regulations (CCR), General Industry Safety Orders (GISO), Section 3273, Working Area. Slope represents the proportion of vertical rise to horizontal length and is specified in the Standards as a ratio (e. Each scaffold walkway should be at least 18. Provide a 3-foot minimum clearance width for continuous passage; if a sidewalk is less than 5 feet in width, provide passing areas of 5 feet by 5 feet at intervals no farther than 200 feet apart. CarlB (Civil/Environmental) 13 Oct 08 17:07. An effective housekeeping program (including floorcare) is needed. Webforge's project management team can work. and cross slopes. In-roadway lights or pedestrian crosswalk signs are treatment that may be. Occupational Safety and Health Administration 200 Constitution Ave NW Washington, DC 20210 1-800-321-OSHA 1-800-321-6742. If a jobsite walkway is required to have cleats due to its slope, what is the maximum allowable spacing for the cleats? 14 inches. "You should never have your tracks going parallel to the slope because. 1 Interpretations (May 16, 1984)Landing requirements for all other exterior doors. Steep Slope Construction Document Revision Date CS-R-16 0 January 9, 2019 Page 1 of 16 1. Walkways are available from 4-ft to 10-ft and bridges are available. 33 percent slope) maximum. 5 million construction workers then covered by subpart L) to support the 1986 proposal for subpart L, based on a review of accident data prepared by the Bureau of Labor Statistics (BLS) (Ex. 2. The OSHA gangway rail requirements are found in OSHA section 1910. 2. 501(b)(11) A steep roof has a slope greater than 4 in 12 (vertical to horizontal). 610 m (2 ft) could create a safety hazard. Roof coverings installed on low-slope roofs (roof slope < 2:12) in accordance with Section 1507 shall demonstrate physical integrity over the working life of the roof based upon 2,000 hours of exposure to accelerated weathering tests conducted in accordance with ASTM G152, ASTM G153, ASTM G154 or ASTM G155. 1910. (b) Stairways: Section 4. The average slope of the top half of the hill, ridge or escarpment is 10 percent or greater. Dear Mr.