A description of the proposed changes are as follows:

1. TITLE 8:

CONSTRUCTION SAFETY ORDERS
Chapter 4, Subchapter 4, Article 29, Sections 1714 and 1715

Precast Concrete Construction

INITIAL STATEMENT OF REASONS


INFORMATIVE DIGEST OF PROPOSED ACTION/PLAIN ENGLISH OVERVIEW

This proposed rulemaking action contains numerous nonsubstantive, editorial, reformatting of subsections, and grammatical revisions. These nonsubstantive revisions are not all discussed in this Informative Digest. However, the proposed revisions are clearly indicated in the regulatory text in underline and strikeout format. In addition to the nonsubstantive revisions, the following actions are proposed:

Section 1714. Hoisting and Erecting of Precast, Prefabricated Panels.

The title to Section 1714 indicates to the reader that the following regulations apply to the hoisting and erection of precast, prefabricated panels. The title is proposed for revision to include a statement that tilt-up panels are not included in this regulation. This proposed revision will clearly indicate to the employer the type of panels that are addressed by the regulation.

Subsection (a).

Subsection (a) requires that a civil engineer currently registered in California prepare an erection plan and procedure. Included in subsection (a) are three subsections requiring the plan and procedure to be available at the job site; the responsible engineer or an authorized representative to make job-site inspections for compliance; and field modifications to be approved by the responsible engineer and added to the plan and procedure available at the site. A revision is proposed to insert the parenthetical phrase "the responsible engineer." This revision will clarify for the employer that the responsible engineer referenced throughout Section 1714 is intended to be a civil engineer currently registered in California.

New Subsection (a)(4).

A new subsection (a)(4) is proposed to require the employer to ensure that the precast wall or vertical panel bracing is designed by, and installed in accordance with the direction of, the responsible engineer. The proposed revision will have no effect on the regulated public as the provision is consistent with existing requirements in Section 1715(d).

New Subsection (a)(5).

A new subsection (a)(5) is proposed to require lifting methods and procedures to be conducted such that employees are not at risk of being struck by the panel or other supporting equipment. This proposal will require the employer to develop means or methods to ensure employees are not permitted to work under or in the proximity of the panel "footprint" during lifting and installation.

Subsection (b).

Existing subsection (b) requires the panel lifting line to remain attached until all attachments shown on the erection plan are installed. This language is proposed to be replaced with a requirement that lifting inserts must be capable of supporting at least four times the maximum intended load. The proposed revision will require the employer to ensure the lifting insert will support four times the weight of the panel being hoisted. The proposed repeal of the existing language in subsection (b) will have no effect as revisions to subsection (d) will provide equivalent provisions to the repealed language.

New Subsection (c).

A new subsection (c) is proposed to require lifting hardware to be capable of supporting at least five times the maximum intended load. The proposed action will have no effect on the regulated public as the provision is consistent with the existing requirement in Section 1715(c).

New Subsection (d).

A new subsection (d) is proposed to require that precast concrete wall units and structural framing are to remain supported to prevent overturning and collapse until the permanent connections are completed. The proposed revision will add specificity to the regulation for the purpose of supporting the prefabricated precast panel.

Section 1715. Precast Concrete Construction, Including Tilt-Up.

The title to Section 1715 informs the reader that the following regulations apply to precast concrete construction, including tilt-up construction. A revision is proposed to reword the title to read "Tilt-Up Concrete Panel Construction." A revision is also proposed to replace the term "precast" with the term "tilt-up" throughout Section 1715. The proposed revisions clarify that Section 1715 is intended to apply to "tilt-up concrete construction."

Subsection (b).

Subsection (b) requires lifting hardware attached to precast members to be capable of supporting at least four times the maximum intended load applied or transmitted to them. Revisions are proposed to delete the phrase "other than the tilt-up members," and to revise the "at least four times" to "at least two times" the maximum intended load. These proposed revisions will permit the use of embedded or otherwise attached lifting hardware for tilt-up concrete panels to be designed to "at least two times" the maximum intended load.

Subsection (d).

Subsection (d) requires precast wall or vertical panel bracing to be designed and installed in accordance with the direction of a currently registered civil engineer to withstand a wind load of at least 10 pounds per square foot. Existing subsection (d) refers to Appendix Plate B-5, where a chart displays the corresponding force in pounds for wind speed. Revisions are proposed to require the bracing to be designed to withstand a minimum wind load induced force created by a 70 mile per hour wind. The proposed wind load factor is consistent with the Tilt-Up Concrete Association's TCA Guideline 5-98, "Temporary Wind Bracing of Tilt-Up Panels During Construction." The proposed revisions will require the employer to use a minimum wind speed of 70 miles per hour when determining the panel loading for temporary bracing requirements.

Subsection (d)(2).

Subsection (d)(2) requires lifting methods and procedures to be executed in such a manner as to ensure that in the event of a lifting attachment failure, employees shall not be exposed to the hazard of being struck by the panel or other supporting equipment. A revision is proposed to reword the requirement such that lifting methods and procedures will be conducted so employees are not at risk of being struck by the panel or other supporting equipment. The proposed revision improves clarity in the regulation.

Subsection (d)(3).

Subsection (d)(3) requires lifting plans to be available on the job site. A revision is proposed to also require the lifting procedures to be available at the job site. This revision clarifies for the employer that both plans and procedures shall be available at the job site, consistent with the proposed requirement of new subsection (d)(4).

New Subsection (d)(4).

A new subsection (d)(4) is proposed to require the employer to ensure a currently registered civil engineer approves field modifications to the lifting plan. It will further require the employer to ensure modifications added to the plan and procedure are available at the job site. The proposed revision will require the employer to ensure that all modifications are approved by the currently registered civil engineer for compatibility with the existing plan for the safety of the employees and is consistent with existing regulations in Section 1714(a)(3).

New Subsection (e).

A new subsection (e) is proposed to require support be provided for erection of the tilt-up wall panels. The proposed revision will require the employer to ensure the panels are supported in order to prevent overturning, toppling and/or collapse of the panels until permanent connections are completed.

DOCUMENTS INCORPORATED BY REFERENCE

None.

Attachments