1910. Ships ladders shall not be used as an element of a means of egress. 00. Section 1910. All ladders shall be inspected regularly, with the intervals between inspections being determined by use and exposure. For industrial/commercial. 5‑2007. 1053 - Clarification of personal ladder boom system requirements: 2 01/03/2012 - 1926. 22 General Requirements . a roof hatch or similar - to solve the cost. 2 Purpose. Handrails and guardrails will make climbing steep treads much easier, especially for your less mobile, flexible workers. 8, Landing Platforms, states "When ladders are used to ascend to heights exceeding 50 ft (except as provided in para. OSHA provides the ship ladder standards include untergliederung 1910. 5 - OMB control numbers under the Paperwork Reduction Act. 25 (b) (1) Standard 1910. 1926. 1926. The net must not be secured to any fixed point on the quay. Ladder safety device may also be . However, OSHA has specific OSHA standards for ship ladders and spiral stairs. 1910. In my design work I would often check OSHA for things not in IBC. Types from ship ladders & stairs (& design specifications)1910. 7-2006, American National Standard for Mobile Ladder Stands and Mobile Ladder Stand. 25 (b) (8), “Spiral, ship, or alternating tread type stairs are only used when the employer can demonstrate that it is not feasible to provide standard stairs. 1926 Subpart A - General. Remember that ladders in excess of 20 feet require cages and rest platforms are required for each 30 feet of height. 25 (b) (2) Vertical clearance above any stair tread to any overhead obstruction is at least 6 feet, 8 inches (203 cm), as measured from the leading edge of the tread. Purpose of this guideline1915. Ship's “ladders” and rung-type vertical ladders are permanent, load-carrying structures that require engineering. H60 – 60° Ships Ladder (Max 15’) H70 – 70° Ships Ladder (Max 18’) H75 – 75° Ships Ladder (Max 18’). Ship ladders, ship stairs, and alternating tread stairs designing specifications, standards, OSHA and IBC code requirements, and gender of steep stairs. Finally, the following OSHA requirements for the surface finish and projections on fixed ladder rungs are listed below: 1910. How do these accessories differ since each various? OSHA and IBC define and resolute standards for the diverse designs to steep stairways. Inspection items are provided in . Yes. 1011. The structure of the accommodation ladders and gangways and their fittings. 9 (1) A fixed ladder installed after the day of the coming into force of this section shall be designed, constructed and installed in accordance with the requirements of ANSI Standard A14. 1, Extensions for Individual Rung Ladders, stipulates that the general requirement for extension of the ladder above the access/egress level does not apply to ladders "intended for manholes and terminations. 29 (b): "Fall protection systems and falling object protection -- criteria and practices. (a) A vessel carrying more than 600 passengers or with overnight accommodations for more than 49 passengers must meet the requirements for stairways, ladders, and elevators in § 72. Hatch openings (30" x. 55, no. (iii) The ladder base section must be placed with a secure. The system will need to meet the standards for platforms, stairways, ladders and rails. 85 (a) (3) The sum of the weight of the container and the maximum cargo weight, in pounds. Safety cages are required on ladders over 24 feet (7315 mm) 2. All ladders shall be inspected regularly, with the intervals between inspections being determined by use and exposure. Differences in the regulatory text between paragraphs 1910. [However,] Ship, spiral, and alternating tread-type stairs are not considered standard stairs. The area shall be of a size to accommodate not less than 5 square feet (0. industrial users, contractors, or standards organizations. The maritime sector is a high-risk industry that faces unique. singleThe grain handling industry is a high hazard industry where workers can be exposed to numerous serious and life threatening hazards. OSHA standards. Ladder safety systems may be used on tower, water tank, and chimney ladders over 20 feet in unbroken length in lieu of cage protection. Step spacing shall not exceed 16 inches between the top surfaces of rungs and shall be uniform throughout the length of the ladder. OSHA’s timeline for enforcement of OSHA regulations for ladders that extend more than 24 feet about the lower level, as well as the timetable for phasing out cages and wells as a means of fall protection, includes the following: For caged, fixed ladders installed before Nov. Easy to understand design criteria for Fixed Roof Ladders. 25(d) OSHA ladder standards require a minimum headroom of 6’6″, a clear width of 26″, and a tread depth of 7. [§1910. 15 Code - Download as a PDF or view online for free. PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES. 2-1990 Safety Requirements for Portable Metal Ladders. There should be open risers with at least 6. is provided with a secure handhold on each side of the opening or doorway. Spiral stairs must meet the vertical clearance requirements in paragraph (d) (3) of this section. 82 (a) (1) The employer shall ensure that each work area and walkway is adequately lighted whenever an employee is present. Ship ladders must be at least 20 inches in width where measured at and below the handrails. In California, Portable Ladder Safety is regulated by Title 8 California Code of Regulations (T8CCR) Sections 1675 , 3276, 3287, and 3413 . The same section indicates that the landings at a ladder’s sides should at least be 30” wide. Exception:Interchangeable tread stair, ships ladders, and ship stairs is all sheer angled stair devices secondhand in space-restricted applications. 11 m) to six inches (. 25(e)(1) Are built-in at a sloped of 50 to 70 final from the horizontal; RISERS must be uniform between landings, 30-50 deg, ≤ 9. Some guard exceptions. Ladders shall be capable of supporting the following loads without failure: 1926. be kept in position, except when goods or materials are being hoisted or lowered at the opening or doorway. Research this link to see how to design a ship’s ladder . The Occupational Safety and Health Administration calls these stairs. Standard number 1910. 2 - Variances from safety and health standards. Occupational Safety and Health Administration 200 Constitution Ave NW Washington, DC 20210 1-800-321-OSHA 1-800-321-6742 Federal Government White House; Benefits. 25. A stack of bricks must not be more than 7 feet high. Call us today at (832) 290-7296 for more maritime safety information! Tags: maritime safety, OSHA standards, safety consultant. Cages shall be provided on ladders of more than 20 feet to a maximum . Ships ladders. SOR/2012-271, s. 164 • Grain Handling - 1910. 3 was changed in 1979 to require a safety cage on a ladder over 24 feet long, instead of the former 20 feet, mean that 29 CFR 1910. • For marine construction activities, 29 CFR Part 1926 standards apply. 3. #7. design, construction, and use of fixed ladders, and sets forth requirements for cages, wells, and ladder safety systems used with fixed ladders, in order to minimize personal injuries. 28 (b) (9) (i) (A) – (D) and 1926. 71 - Terminals handling intermodal containers or roll-on roll-off operations. When conditions are such that neither a gangway nor a straight ladder can be used, a Jacob's ladder meeting the requirements of paragraphs (d) (1) and. Accommodation Ladder and ship structure OR the tensile strength of ropes, wires, pullies and fittings is inadequate. 10 has been incorporated in A14. 91-596, encourages states to develop and operate, under OSHA guidance, their own job safety and health plans. which are provided on board ships constructed on or after 1 January 2010 should meet applicable international standards such as ISO 5488:1979, Shipbuilding – accommodation ladders, ISO 7061:1993, Shipbuilding – aluminium shore gangways for seagoing vessels and/or national standards and/or other requirements recognized by the Administration. Feb 22, 2023. As you can see from the above sketch, there is a single direction of travel to the ladder from the catwalk. 05–20 of this chapter. 3-Point Contact . Fixed ladders above 24 feet must have a fall protection system Previously, the OSHA required fixed ladders taller than 20 feet to have cages as a form of fall protection. When a ship's ladder extends farther than 6 feet, all employees who will be working on that ladder. The second is a table showing angle and type. Yes. 23 (b) A Jacob's ladder shall either hang without slack from its lashings or be pulled up entirely. Pending the modification of Subpart D the enforcement of the requirements of existing standards will continue. . ”There are diverse international standards and references for stairs. Purpose: To establish Oregon OSHA’s position on the applicability of fall protection requirements under 1910. These stairs became known as ship's stairs or ship's ladders. 1915. 12"H from bottom step to top step. g. A stack of masonry blocks that reaches 6 feet must taper one-half of a brick per layer of blocks. Blog » OSHA ladder requirements: Safety checklists. 4. 561 – Handrails over Roofing;Even if certain OSHA standards do not require documentation of safety training, it can’t hurt to have the information about the topic, the trainer, the date, and names of the workers on file. Falls from ladders account for 20 percent of all fatal and lost work-day injuries in general industry. However, Members should clarify withOSHA; Standards; Enforcement; Topics; Media Center; Contact Us; U. A ladder with rails or individual rungs that is permanently attached to a structure, building, or equipment. Fixed ladders above 24 feet must have a fall protection system. Where a change in roof elevation greater than 30 inches (762 mm) but not exceeding 16 feet (4. Stairs meet OSHA or IBC dimensional standards. 160 • Fire Detection Systems, 1910. 23 (b) (12) is for employers to ensure that workers maintain "three-point contact" (i. For angles 30 to 50 degrees for Standard Stairs. (2) It shall be the duty of the occupier of the workplace to ensure that every fencing referred to in paragraph (1) shall —. 12"H from bottom step to top step. 1917. Ships ladders are permitted to be used in Group I-3 as a component of a means of egress to and from control rooms or elevated facility observation stations not more than 250 square feet (23 m 2) with not more than three occupants and for access to unoccupied roofs. Also, the exception to IBC 1011. Start Preamble AGENCY: Occupational Safety and Health Administration (OSHA), Department of Labor. In general, the standards require the following: A ship's ladder must have toe clearance of 7 inches unless the nature of the work requires a lesser clearance; 4. 05–20 of this chapter. The Limits of an OSHA-compliant Exterior Ladder. 5 (Portable Reinforced Plastic Ladders)Ships Ladders: RoofHatch-HP70-80 Standard Access Ladders . 1050 Scope, Application, and Definitions Applicable to this. 82 (a) General Requirements . Note: The "Preambles to Final Rules" bullets above link to preambles to. For construction, as well as in its new promulgated. Aforementioned guide will help you understand of different designs and code standards, or support they make the right make in choosing the safest, code-compliant option. Steel, aluminum, wood, and fiberglass ladders proudly crafted in the United State been 1908. 23 (a) Jacob's ladders shall be of the double rung or flat tread type. general industry scaffold standards with the requirement that employers comply with OSHA's construction scaffold standards; Phase-in of ladder safety systems or personal fall arrest systems on fixed ladders (§1910. Ladder Safety: Portable Ladder Pre-use Inspection Checklist. They generally follow OSHA - 22" clear, ladders, ships ladders, spiral stairs, etc allowed. 2(1)(b) Ladders in manholes G13. Let’s take a look at what the top 10 violations for FY22 are. 5: Safety Requirements for Portable Reinforced Plastic Ladders: ANSI: A14. 1915. A ship's ladder is a specific style of stairway initially used on ships. From 50 degrees to 30 degrees show for Standard Stairs. standards may be covered by General Industry standards contained in 29 CFR Part 1910 (OSHA website: Where a hazard is covered by both the Shipyard Industry standards and the General Industry standards, only the Shipyard Industry standard will be cited by OSHA inspectors (described in more detail in 29 CFR OSHA and CONTAINERIZATION define and selected standards for the different designs of steep stairways. For more information, visit or call OSHA at 1-800-321-OSHA (6742), TTY 1-877-889-5627. The European Standard EN131 is a Europe wide classification and it replaced the old British Class II Ladder Standard. 2-2007, A14. 1915. H60 – 60° Ships Ladder (Max 15’) H70 – 70° Ships Ladder (Max 18’) H75 – 75° Ships Ladder (Max 18’). 5/21/2018 PIP STF05501 (Fixed Ladders & Cages) 2/11. Scaffolding » Supported Scaffolds. Ships ladders are permitted to be used in Group I-3 as a component of a means of egress to and from control rooms or elevated facility observation stations not more than 250 square feet (23 m 2) with not more than three occupants and for access to unoccupied roofs. The Occupational Safety and Health Administration (OSHA), International Maritime Organization, Protection and Indemnity Clubs, and Owners and Operators have established various requirements and shared best practices to improve gangway safety, such as:. The Agency’s interpretations explain these require- ments and how they apply to particular circumstances, but they do not create additional employer obligations. OSHA maintains 1910. (422 000 KJ) input capacity. 5205. Ships ladder OSHA Code 1910. 25(b). (OSHA FS 3728 - 2014) (English: PDF ) (OSHA FS 3891 - 2016) (Español: PDF )For ship repair, shipbuilding, and shipbreaking, 29 CFR Part 1915 standards apply. 1910. “Ship’s ladder” and “Ship’s stairs” are interchangeable terms. 3-1984 entitled American National Standard for Ladders — Fixed — Safety Requirements, as amended from time to time, other than section 7 of that Standard. There are two very good reasons for using the pilotladder in the correct way: The safety of the pilot and the structural integrity of the pilotladder. 30(b)(1)] PART 1: INTRODUCTION Portable ladders: Don’t let them let you down Portable ladders are often the first toolOSHA requirements are set by statute, standards and regulations. pdf (4. 1917. 3-stringer design with treads welded to the stringers. Per OSHA 1910. (d) ANSI standard A14. The implementation of controls, procedures, and training help raise. If an Occupational Safety and Health Administration (OSHA) compliance officer were to observe conditions as described in item 4 above, a violation would be noted and. In 1988, the American National Standards Institute (ANSI), an organization which sets voluntary consensus standards, approved a revision of ANSI A10. Ship ladders are permitted to be used in Group I-3 as a component of a means of egress to and from control rooms or elevated facility observation stations not more than 250 square feet (23 m 2) with not more than three occupants and. [29 CFR 1915. 25(e)Staging more than 5 feet high requires appropriate access (for example ladders ramps, stairways). 55 - Gas welding and cutting. [29 CFR 1915. Larger mezzanines require two or more exit stairways. M60 – 60° Ships Ladder (Max 15’) M70 – 70° Ships Ladder (Max 17’) M75 – 75° Ships Heading (Max 19’)306. Just for platforms, for example, OSHA rules include:for connecting two offshore units to transfer offshore personnel on a temporary basis. 15. 72. Department of Labor. ( d) Inspection, maintenance, and repair. 2) Cost-effectiveness – Standardized ships ladders are both cost effective on their own, as well as in comparison with other maritime. 5-2007, American National Standard for Ladders - Portable Reinforced Plastic - Safety Requirements, which is. This is in response to your February 25, 2015, letter in which you ask about OSHA's enforcement policy with regard to fixed ladders built to certain specifications. 29 CFR 1926 Subpart L, Authority for 1926 Subpart L. 453, Aerial lifts. Ladders: Fixed Ladders Used Only for Emergency Evacuations. 7. 1917. The employer must ensure: ( i) Each employee on a scaffold is protected from falling in accordance 29 CFR part 1926, subpart L; and. Handrails ship unattached and bolt into place. 1910. On the other hand, the height of your. 1926 - Table of Contents. Therefore, according to OSHA, a gate is required at the top of all ladders. 71 (d) (1) Metal scaffold members shall be maintained in good repair and free of corrosion. 152) standards. Furthermore, the following safe ladder use criteria will be required to be met:1926. When used to cross-over a structure, two ships stairs and a platform are used. Ladders – Part 2 : Requirements, testing, marking The national standard is the identical implementation of EN 131-2:2010+A2:2017 and is adopted with permission of CEN, Avenue Marnix 17, 1000 Brussels. 1052 (c) (2) Winding and spiral stairways shall be equipped with a handrail offset sufficiently to prevent walking on those portions of the stairways where the tread width is less than 6 inches (15 cm). OSHA requirements are set by statute, standards and regulations. 3. 1910. 2(1) Ships' ladders G13. For example, the United States’ OSHA (Occupational Safety and Health Administration) defines that all ship stairs (or ship ladders). Up to 300 lbs. 451(g)(3). AROUND. is securely fenced; and. 8. Where two exit access doorways are required, one is permitted to be a fixed ladder or an alternating tread. Users are responsible for checking local, state, and federal codes, including OSHA or IBC, for safe installation and operating. While fixed ladders include ladders attached to equipment, OSHA notes ladders that are designed into or are an integral part of machines or equipment are excluded from coverage 1910. R311. 2 m) or more above a lower level is protected from falling by a personal fall arrest system. i. The general standards also address. 1926. Meets or exceeds OSHA standards. For fixed ladders consisting of wood side rails and wood rungs or cleats, used at a pitch in the range 75 degrees to 90 degrees, and intended for use by no more than one person per section,Combination Ladder Safety Standards Safety requirements for Construction, Performance, Use and Care of Combination Ladders can be found in the following standards: ANSI A14. A “Ship Ladder” is defined by OSHA in proposed section 1910. S. 6. OSHA also has other. 2 (Portable Metal Ladders) ANSI A14. American National Standard Institute (ANSI) standards A14. 118 (e) (1) Fixed ladders more than 20 feet (6. Table of contents. 272 • Ethylene Oxide - 1910. 0210SHIPS LADDERS, SPECIAL REQUIREMENTS. Table away contents. Occupational Safety and Health Administration 200 Constitution Ave NW Washington, DC 20210 1-800-321-OSHA 1-800-321-6742 Federal Government White House; Benefits. The standards we mentioned above apply to all fixed extension ladders and staircases used to access roofs with a vertical clearance of fewer than 20 feet. 75 Access to and guarding of dry docks and marine railways. In stock and ready to ship. 5-1992 Safety Requirements for Portable Reinforced Plastic Ladders. supersimplex Follow. 25 standard) 42" guards. OSHA and IBC define and set standards available the different designs of steep stairways. A confined space also has limited or restricted means for entry or exit and is not designed for continuous occupancy. e. 1926. 3-1992, Safety Requirements for Fixed Ladders, section 5. 10 are mentioned in 3276. Banisters shall can provided on both sides of ships ladders. (3) The means of access shall be in accordance with the requirements of paragraphs (a) (9), (10), and (11) of this section. The maximum distance from the face for plastering and lathing operations must be 18 inches. Finally, the following OSHA requirements for the surface finish and projections on fixed ladder rungs are listed below: 1910. Ladder rungs, cleats, or steps must be parallel, level, and uniformly spaced when the ladder is in position for use. 1: Safety Code for Window Cleaning: ANSI: A92. Some vessel deballasted beyond its lightest seagoing condition in preparation forOSHA’s Powered Platforms standard. Pilot Ladder Safety -. 3-stringer design with treads welded to the stringers. 1, A14. The three points of contact refers to two hands and one foot, or two feet and one hand. Some employers believe that a gate or offset is required only on fixed ladders over 24 feet. 51 m) in width, of adequate strength, maintained in safe repair and safely secured shall be used. 118 (e) (2) (i) Osha ships ladder standards. 27 have led to some confusion. 27 (f) "Maintenance. 1200) and Personal Protective Equipment (29 CFR 1915. Section 1910. Handrails are anytime provided. 2 allows access to unoccupied roofs to be a roof hatch or trap door. Quick, responsive service. 1, Extensions for Individual Rung Ladders, stipulates that the general requirement for extension of the ladder above the access/egress level does not apply to ladders "intended for manholes and terminations with hatches. 71(j) (1) and (2). No container shall be hoisted by any lifting appliance unless the following conditions have been met:Safety net If it is applicable and practicable, a safety net is to be fitted under every part of the access ladder or gangway, extending on both sides and kept taut. Note that IBC does not allow ships ladders and permanent ladders as a means of egress. 1915. Because they are so steep, ships ladders have way less usable tread depth than a standard OSHA oder IBC stair plan. Handrails are always provided. These standards are available at the Oregon Occupational Safety and Health Division, Oregon Department of Consumer and Business Services, and the United States Government Printing Office. It also addresses the importance of training in establishing and reinforcing employee awareness of job safety and health, the elements of an effective safety and health program, and OSHA’s On-site. 14 m) shall comply with the following provisions: 1917. 13 (1) Unless otherwise permitted by this Part, a scaffold must meet the requirements set out in one or more of the following standards: (a) ANSI/ASSE Standard A10. For manufactured ship ladder, Alaco Ladder offers two general options: roof hatch access ships ladders and mezzanine access ships ladders. 11 Ship ladders. 1 - Purpose and scope. 19, 2018, employers. Handrails shall be provided on both sides of ship ladders and shall comply with Section R311. 27 have led to some confusion. 2. It specifies the dimensions, materials, construction and use of portable ladders, portable metal ladders and portable wood ladders up to 30 feet in length. The second is a table showing angle and type. 23 (b) (4), ladder rungs, steps, and cleats must have a minimum clear width of 16 inches (measured before installation of ladder safety systems) for fixed ladders. 91-596, encourages states to develop and operate, under OSHA guidance, their own job safety and health plans. IBC requires one means of egress when mezzanine floor areas serve less than 49 occupants. 1 ), platforms shall be evenly spared at intervals of 50 ft or less. For industrial/commercial. 25 (Stairways). Stairways and Ladders X Oregon Occupational Safety and Health Division Oregon Administrative Rules AO 3-2015 Division 3 1926. Previously, the OSHA required fixed ladders taller than 20 feet to have cages as a form of fall protection. 502(d) PLEASE NOTE: A ladder that is less than 24’ feet high does “not” require a fall arrest system of any sort. Fixed ladders include individual-rung ladders, but not ship stairs (ship ladder), step bolts, or manhole steps. (a). You had specific questions regarding the use of ship's stairs in general industry. Walking-Working Surfaces and Personal Protective Equipment (Fall Protection Systems). OUR ACCOUNT; IS INSTALLATIONS; CODE COMPLIANCE; MY TESTIMONIALS; RECHTSSACHE STUDIES; WARRANTY CLAIMS AND RETURNS; PRODUCTS. of this section apply to ship repairing, shipbuilding and shipbreaking except that paragraph (a)(4) of this section applies to ship repairing only. 453, Aerial lifts. Meets or exceeds OSHA requirements. If the bricks are loose, a stack of 4 feet or more must have 2 inches of taper for every additional 1 foot of height. Falls from ladders account for 20 percent of all fatal and lost work-day injuries in general industry. general industry scaffold standards with the requirement that employers comply with OSHA's construction scaffold standards; Phase-in of ladder safety systems or personal fall arrest systems on fixed ladders (§1910. A ladder with rails or individual rungs that is permanently attached to a structure, building, or equipment. 8-1977, Scaffolding, updating its safety requirements for the use of scaffolds in construction and demolition operations. 16 m) on vessels built after December 5, 1981, (7) in order to be consistent with the recommendations of the ILO's Guide to Safety and Health in Dock Work (Ex. 28(b)(9)(ii)(B) requires that ladders equipped with a personal fall protection or. 502). : 3 01/21/2010 - 1926. 1910. Meets or exceeds OSHA standards. As for the handrail projection, clearance, and grip size, this section refers you to the conventional staircase handrail standards found in Section R311. To prevent falls, descend and then move the ladder. 5″. IBC Requirements for Unoccupied Roof Egress. The minimum clear width at and below the handrails shall. Title: Gangways. (3) Portable reinforced plastic ladders placed in service after January 7, 2011, shall meet the design and construction requirements of ANSI A14. 1053 (a) (18) & (19) for fixed ladders used only for emergency evacuations. 75(g) Catwalks on stiles of marine railways shall be no less than 20 inches wide and shall have on at least one side a guardrail and midrail meeting the requirements of § 1915. Proposed Rules 67:13117, (March 21, 2002). Ship ladders, ship. These hazards include: fires and explosions from grain dust accumulation, suffocation from engulfment and entrapment in grain bins, falls from heights and crushing injuries and amputations from grain handling. Exterior Roof Access. 0065 suspension scaffolds. 29 CFR 1926. 29 CFR 1926. 2 of IBC has to be considered a portion of the story it. The top rail must be at least 42 inches in height (§1910. 2. 1915. This letter constitutes OSHA's interpretation of only the requirements discussed and may not be applicable to any question not delineated in your original correspondence. 23 Ladders §1910. 2 to R311. 23(c)(2) and in the fixed ladder standard at 1910. Injury Source Safety Requirements and Best Practices (Citations to relevant OSHA standards are included below) Incorrect Handling of Materials This web page is a PDF document that contains the full text of the OSHA standard for walking-working surfaces, including the requirements for ladders. An Alaco heavy-duty ship ladder ensures safety the solidity. (OSHA 1910. SOR/2015-211, s. 1: Safety Code for Window Cleaning: ANSI: A92. 7. 29(g)(4)), have an acceptable guardrail system (29 CFR § 1910. The following diagram is a recommendation that comes that IBC and OSHA requirements. Here are the relevant fixed ladder compliance deadlines, per OSHA: 1910. 91 m) above the upper landing. 29 CFR 1926. B. Top view sketch of catwalk side mounted fixed ladderway opening. Of course, you should also check the OSHA codes as well as local building codes when designing a ship ladder. Under the new regulations, a ladder over 24’ foot high “will” require a personal fall arrest system or ladder safety system. ( ii) Each employee using a rope descent system 4 feet (1. 1926. Also, the American National Standards Institute (ANSI) standard A14. OSHA’s Ladder Compliance Enforcement Timeline.