Installing rebar on vertical columns

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Oregon Occupational Safety and Health Division Oregon Administrative Rules AO 1-2011 Division 3 - (5) Installation of metal decking. - (i) Except as provided in 1926.760(c), metal decking shall be laid tightly and immediately secured upon placement to prevent accidental movement or displacement. - (ii) During initial placement, metal decking panels shall be placed to ensure full support by structural members. - (6) Derrick floors. - (i) A derrick floor shall be fully decked and/or planked and the steel member connections completed to support the intended floor loading. - (ii) Temporary loads placed on a derrick floor shall be distributed over the underlying support members so as to prevent local overloading of the deck material. [66 FR 5265, Jan. 18, 2001, as amended at 71 FR 2885, Jan. 18, 2006; 71 FR [redacted postal code], Apr. 3, 2006; 75 FR [redacted postal code], May 17, 2010] Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02. OR-OSHA Admin. Order 6-2002, f. 7/19/02, ef. 7/19/02. OR-OSHA Admin. Order 8-2003, f. 12/30/03, ef. 1/1/04. OR-OSHA Admin. Order 2-2006, f. 4/28/06, ef. 4/28/06. OR-OSHA Admin. Order 4-2006, f. 7/24/06, ef. 7/24/06. ## 1926.755 Column Anchorage - (a) General requirements for erection stability. - (1) All columns shall be anchored by a minimum of 4 anchor rods (anchor bolts). - (2) Each column anchor rod (anchor bolt) assembly, including the column-to-base plate weld and the column foundation, shall be designed to resist a minimum eccentric gravity load of 300 pounds (136.2 kg) located 18 inches (.46m) from the extreme outer face of the column in each direction at the top of the column shaft. - (3) Columns shall be set on level finished floors, pre-grouted leveling plates, leveling nuts, or shim packs which are adequate to transfer the construction loads. - (4) All columns shall be evaluated by a competent person to determi…

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Oregon Occupational Safety and Health Division Oregon Administrative Rules Division 3 Running bond (half bond) is a bond pattern in which block are placed half way over units directly below creating a staggered look. - Safe location is an area at a jobsite that employees can take refuge in order to avoid hazardous conditions. - Stack bond is a bond pattern in which blocks are stacked directly over each other (not lapped longitudinally) creating continuous joints both vertically and horizontally. - Straight coil loop insert is a wall insert that loops around the structural rebar and is suitable for the attachment of braces in a structural masonry wall. Minimum size of a coil loop insert is 3/4 inch. Structural rebar is rebar that extends full length or height and can be spliced per required lap. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 1-2003, f.1/30/03, ef. 4/30/03. ## 1926.701 General Requirements - (a) Construction loads. No construction loads shall be placed on a concrete structure or portion of a concrete structure unless the employer determines, based on information received from a person who is qualified in structural design, that the structure or portion of the structure is capable of supporting the loads. - (b) Reinforcing steel. All protruding reinforcing steel, onto and into which employees could fall, shall be guarded to eliminate the hazard of impalement. - (c) Post-tensioning operations. - (1) No employee (except those essential to the post-tensioning operations) shall be permitted to be behind the jack during tensioning operations. - (2) Signs and barriers shall be erected to limit employee access to the posttensioning area during tensioning operations. - (d) Riding concrete buckets. No employee shall be permitted to ride concrete buckets. - (e) Working under loads.

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Oregon Occupational Safety and Health Division Division 3 - (d) Working under loads. - (1) Routes for suspended loads shall be pre-planned to ensure that no employee is required to work directly below a suspended load except for: - (i) Employees engaged in the initial connection of the steel; or - (ii) Employees necessary for the hooking or unhooking of the load. - (2) When working under suspended loads, the following criteria shall be met: - (i) Materials being hoisted shall be rigged to prevent unintentional displacement; - (ii) Hooks with self-closing safety latches or their equivalent shall be used to prevent components from slipping out of the hook; and - (iii) All loads shall be rigged by a qualified rigger. - (e) Multiple lift rigging procedure. - (1) A multiple lift shall only be performed if the following criteria are met: - (i) A multiple lift rigging assembly is used; - (ii) A maximum of five members are hoisted per lift; - (iii) Only beams and similar structural members are lifted; and - (iv) All employees engaged in the multiple lift have been trained in these procedures in accordance with 1926.761(c)(1). - (v) No crane is permitted to be used for a multiple lift where such use is contrary to the manufacturer's specifications and limitations. - (2) Components of the multiple lift rigging assembly shall be specifically designed and assembled with a maximum capacity for total assembly and for each individual attachment point. This capacity, certified by the manufacturer or a qualified rigger, shall be based on the manufacturer's specifications with a 5 to 1 safety factor for all components. - (3) The total load shall not exceed: - (i) The rated capacity of the hoisting equipment specified in the hoisting equipment load charts; - (ii) The rigging capacity specified in the rigging rating chart. - (4) The multiple lift rigging assembly shall be rigged with members: - (i) Attached at their center of gravity and maintained reasonably level;

Source excerpt

Oregon Occupational Safety and Health Division Division 3 ## 1926.759 Falling Object Protection - (a) Securing loose items aloft. All materials, equipment, and tools, which are not in use while aloft, shall be secured against accidental displacement. - (b) Protection from falling objects other than materials being hoisted. The controlling contractor shall bar other construction processes below steel erection unless overhead protection for the employees below is provided. Stat. Auth.: ORS 654.025(2) and 656.726(4). Stats. Implemented: ORS 654.001 through 654.295. Hist: OR-OSHA Admin. Order 3-2002, f. 4/15/02, ef. 4/18/02. ## 1926.760 Fall Protection - (a) General requirements. - (1) Except as provided by paragraph (a)(3) of this section, each employee engaged in a steel erection activity who is on a walking/working surface with an unprotected side or edge more than 15 feet (4.6 m) above a lower level shall be protected from fall hazards by guardrail systems, safety net systems, personal fall arrest systems, positioning device systems or fall restraint systems. - (2) Perimeter safety cables. On multi-story structures, perimeter safety cables shall be installed at the final interior and exterior perimeters of the floors as soon as the metal decking has been installed. - (3) Connectors and employees working in controlled decking zones shall be protected from fall hazards as provided in paragraphs (b) and (c) of this section, respectively. - (b) Connectors. Each connector shall: - (1) Be protected in accordance with paragraph (a)(1) of this section from fall hazards of more than two stories or 30 feet (9.1 m) above a lower level, whichever is less; - (2) Have completed connector training in accordance with 1926.761; and - (3) Be provided, at heights over 15 and up to 30 feet above a lower level, with a personal fall arrest system, positioning device system or fall restraint system and wear the equipment necessary to be able to be tied off; or be provided with other…