Stripping concrete forms

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<!-- image --> Division 3 AO 1-2003 Oregon Administrative Rules Oregon Occupational Safety and Health Division Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 4-1989, f. 3/31/89, ef. 5/1/89 (temp). APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89 (perm). ## 1926.703 Requirements for Cast-in-place Concrete - (a) General requirements for formwork. - (1) Formwork shall be designed, fabricated, erected, supported, braced and maintained so that it will be capable of supporting without failure all vertical and lateral loads that may reasonably be anticipated to be applied to the formwork. Formwork which is designed, fabricated, erected, supported, braced and maintained in conformance with the Appendix to this section will be deemed to meet the requirements of this paragraph. - (2) Drawings or plans, including all revisions, for the jack layout, formwork (including shoring equipment), working decks, and scaffolds, shall be available at the jobsite. - (b) Shoring and reshoring. - (1) All shoring equipment (including equipment used in reshoring operations) shall be inspected prior to erection to determine that the equipment meets the requirements specified in the formwork drawings. - (2) Shoring equipment found to be damaged such that its strength is reduced to less than that required by 1926.703(a)(1) shall not be used for shoring. - (3) Erected shoring equipment shall be inspected immediately prior to, during, and immediately after concrete placement. - (4) Shoring equipment that is found to be damaged or weakened after erection, such that its strength is reduced to less than that required by 1926.703(a)(1), shall be immediately reinforced. - (5) The sills for shoring shall be sound, rigid, and capable of carrying the maximum intended load. - (6) All base plates, shore heads, extension devices, and adjustment screws shall be in firm contact, and secured when necessary, with the foundation and the form. - (7) Eccentric loads on shore heads and simila…

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- 94.1 (7) An employer shall ensure, before concrete is poured, - (a) that the formwork and shoring are inspected by an engineer, or a competent person designated by the employer, and - (b) that the engineer, or the competent person desig -nated by the employer, as the case may be, authorizes the pour in writing. - 94.1 (8) An employer shall ensure that the written au -thorization referred to in paragraph (7)(b) - (a) is kept on the project site, and - (b) is made available to an officer on request. - 94.1 (9) An employer shall ensure that the formwork and shoring are not removed unless - (a) the concrete is strong enough to support itself and any loads that may be applied to it, or - (b) the concrete is adequately reshored. - 94.1 (10) Where concrete is reshored under para -graph (9)(b), subsections (2), (3), (4), (5) and (6) apply, with the necessary modifications, to the reshoring. - 94.1 (11) Subsections (2), (3), (4), (5), (6), (7), (8), (9) and (10) do not apply where formwork and shoring are used no more than 3 m above the ground level. - 94.1 (12) Where formwork and shoring are used no more than 3 m above the ground level, an employer shall ensure that the formwork and shoring are erected, sup -ported and braced so that they are capable of withstand -ing all loads and forces likely to be applied to them. - 94.1 (7) L'employeur doit s'assurer, avant que ne soit versé le béton, - a) que le coffrage et les étançons sont inspectés par un ingénieur, ou par la personne compétente désignée par l'employeur, et - b) que l'ingénieur, ou la personne compétente dési -gnée par l'employeur, selon le cas, en autorise le ver -sement par écrit. - 94.1 (8) L'employeur doit s'assurer que l'autorisation écrite visée à l'alinéa (7)b) - a) se trouve sur les lieux du chantier, et - b) est mise à la disposition d'un agent, sur demande. - 94.1 (9) L'employeur doit s'assurer que le coffrage et les étançons ne soient enlevés que si - a) le …

Source excerpt

Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89. OR-OSHA Admin. Order 6-1991, f. 3/18/91, ef. 4/15/91. <!-- image --> Division 3 AO 1-2003 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (7) The predetermined safe rate of lift shall not be exceeded. - (d) Reinforcing steel. - (1) Reinforcing steel for walls, piers, columns, and similar vertical structures shall be adequately supported to prevent overturning and to prevent collapse. - (2) Employers shall take measures to prevent unrolled wire mesh from recoiling. Such measures may include, but are not limited to, securing each end of the roll or turning over the roll. - (e) Removal of formwork. - (1) Forms and shores (except those used for slabs on grade and slip forms) shall not be removed until the employer determines that the concrete has gained sufficient strength to support its weight and superimposed loads. Such determination shall be based on compliance with one of the following: - (i) The plans and specifications stipulate conditions for removal of forms and shores, and such conditions have been followed, or - (ii) The concrete has been properly tested with an appropriate ASTM standard test method designed to indicate the concrete compressive strength, and the test results indicate that the concrete has gained sufficient strength to support its weight and superimposed loads. - (2) Reshoring shall not be removed until the concrete being supported has attained adequate strength to support its weight and all loads in place upon it. [53 FR [redacted postal code], June 16, 1988, as amended at 61 FR 5510, Feb. 13, 1996] Stat. Auth.: ORS 654.025(2) and 656.726(3). Hist: APD Admin. Order 8-1989, f. 7/7/89, ef. 7/7/89. OR-OSHA Admin. Order 6-1991, f. 3/18/91, ef. 4/15/91.