WALKING – WORKING SURFACES. 29 CFR 1910 Subpart D. 1910.21 DEFINITIONS. FLOOR HOLE – an opening measuring less than 12 inches but more than 1 inch in its least dimensions FLOOR OPENING – an opening measuring 12 inches or more in its least dimension i.e. stair opening, hatchway, manhole.
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29 CFR 1910
i.e. stair opening, hatchway, manhole
(1) All places of employment, passageways, storerooms, and service rooms shall be kept clean and orderly and in a sanitary condition
(2) The floor of every workroom shall be maintained in a clean and dry condition. When wet processes are used, drainage shall be maintained.
(b) Aisles and Passageways
(1) Where mechanical handling equipment (fork trucks) is used, sufficient safe clearances shall be allowed for aisles.
(2) Permanent aisles and passageways shall be appropriately marked.
* ANSI Z 53.1 Aisle Markings
* 1910.176 PIT
(d) Floor Loading Protection
(1) Overhead storage areas, mezzanines, etc. need posted sign identifying the maximum weight per square foot of the space.
(a) Protection for Floor Openings
(1) Every stairway floor opening shall be guarded by a standard railing, provided on all exposed sides (except at entrance to stairway).
(a)(2) Every ladder, floor opening or platform shall be guarded by a standard railing with standard toe board on all exposed sides (except at entrance to opening).
* Industry – 4 ft * Construction – 6 ft
(a)(3) Every hatchway and chute floor opening shall be guarded by one of the following: (i) Hinged Floor Opening Cover
(ii) Removable Railing & Toe Board
(4) Every skylight floor opening and hole shall be guarded by a standard skylight screen or fixed standard railing on all exposed sides
(5) Every pit and trapdoor shall be guarded by a floor opening cover. While the cover is not in place the opening shall be constantly attended by someone or protected on all exposed sides by a removable standard railing.
(6) Every manhole floor opening (measuring larger than 12 inches) shall be guarded by a standard manhole cover.
(7) Every temporary floor opening shall have standard railings.
(8) Every floor hole shall be guarded by:
(i) Standard Railing with Standard Toe Board
(ii) Floor Hole Cover
(10) Where doors or gates open directly on a stairway, a platform shall be provided and the swing of the door shall not reduce the effective width to less than 20 inches.
(b) Protection for wall openings and holes
(1) Every wall opening from which there is a drop of more than 4 ft shall be guarded
i.e. shipping docks
(c) Protection of open sided floors, platforms, and runways
(1) Every open sided floor or platform 4 ft or more above the floor shall be guarded by a standard railing
(c)(1) A toe board shall be provided whenever:
(i) persons can pass under
(ii) there is moving machinery
(iii) hazard of falling materials
(2) Every runway shall be guarded by a standard railing
(3) Regardless of height, open sided floors, walkways, platforms above or adjacent to dangerous equipment, galvanizing tanks, degreasing units and similar hazards shall be guarded with railing and toe board
(d) Stairway railing and guards
(1) Every flight of stairs having four or more risers shall be equipped with standard railings
(i) stairways less than 44 inches wide -having both sides enclosed at least one handrail on the right side descending
(ii) having one side open – at least one stair railing on open side
(iii) having both sides open – one stair railing on each side
(iv) Stairways more than 44 inches wide but less than 88 inches wide – one handrail on each enclosed side and one stair railing on each open side
(v) Stairways more than 88 inches wide – one handrail on each enclosed side , one stair railing on each open side and one intermediate stair railing
(e) Railings, toe boards and cover specifications
(1) Standard railing consists of top rail, intermediate rail and posts and shall have a vertical height of 42 inches. Top rail (42”) shall be smooth-surfaced. Intermediate rail (21”) shall be approximately halfway between
the top rail and the floor.
(e)(2) Stair railing shall be of construction similar to standard railing. The vertical height shall be not more than 34 inches nor less than 30 inches from upper surface of top rail.
(e)(6) All handrails shall have a clearance of not less than 3 inches between the handrail and any other object.
(8) Skylight screens shall be of such construction and mounting that they are capable of withstanding a load of at least 200 pounds.
(f) Stair treads – rise height and tread width shall be uniform throughout any flight of stairs.
(h)(i) Vertical Clearance – vertical clearance above any stair tread to an overhead obstruction shall be at least 7 feet.
(b)(1) Requirements of wood parts
(i) All wood parts shall be free from sharp edges and splinters
(c)(2) Portable stepladders – stepladders longer than 20 feet shall not be supplied.
Three types of ladders TYPE IA – Industrial
TYPE II – Commercial
TYPE III – Household
(c)(2)(i) General Requirements
(b) A uniform step spacing, not more than 12 inches, shall be employed.
(f) Each ladder shall have a metal spreader which holds the front and back sections in the open position.
(d) Care and Use of Ladders
(1)(i) Ladders shall be maintained in good condition at all times.
(iv) Safety feet shall be kept in good condition.
(x) Ladders shall be inspected frequently and those which have developed defects shall be withdrawn from service.
(xi) Rungs shall be free of grease and oil.
(i) Used at a 4:1 pitch, ladders shall be lashed or held in position. Ladders shall not be used in a horizontal position.
(ii) Ladders should not be used by more than one man at a time.
(iii) Portable ladders shall be so placed that the side rails have secure footing.
(iv) Ladders shall not be placed in front of door opening, unless the door is blocked, locked or guarded.
(v) Ladders shall not be placed on boxes, barrels, or other bases to obtain additional height.
(vii) Ladders with broken or missing steps, rungs, cleats or side rails shall not be used.
(ix) Ladders shall not be spliced together.
(xi) Ladders shall not be used as braces or other than their intended purpose.
(xii) Tops of stepladders shall not be used as steps.
(xiii) On two section extension ladders the minimum overlap shall be
(xv) Ladder used to gain access to a roof shall extend at least 3 feet above the roofline.
(xix) The user should equip all portable rung ladders with non-slip bases if a slipping hazard is present.
(xx) The bracing on the back legs of a step ladder are not for climbing.
* Step ladders can not be used as a straight sided ladder
(c)(7) Portable ladders shall have nonconductive side rails
(c)(4) Clearance in back of ladder – the distance from the centerline of the rungs to the nearest permanent object in back of the ladder shall be not less than 7 inches.
(d) Special Requirements
(1)(i) Cages shall be provided on ladders of more than 20 feet.
(1)(ii) Cages shall extend a minimum of 42 inches above the top of the landing.
(iv) Cages shall extend down the ladder to a point not less than 7 feet nor more than 8 feet above the base of the ladder.
(d)(3) Ladder extensions – the side rails of through or side step ladder extensions shall extend 3 ½ feet above landings.
(4) Ladder safety devices – ladder safety devices may be used on ladders over 20 feet in unbroken length in lieu of cages.
(a) Dockboards (bridge plates)
(1) Dockboards shall be strong enough to carry the load imposed on them.
(2) Dockboards shall be secured in position.
(3) Powered dockboards shall be designed and constructed in accordance with CS202-56 (1961)
(4) Positive protection shall be provided to prevent railroad cars from being moved.