Subpart Q - Concrete and Masonry Construction

Scope: This standard provides the general requirements pertaining to concrete and masonry construction. 

Special Requirements: Employer determination, qualified person, signs, barriers, personal protective equipment

1926.701(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.

1926.701(c)(2) - Signs and barriers shall be erected to limit employee access to the post-tensioning area during tensioning operations.

1926.701(f) - Personal protective equipment. No employee shall be permitted to apply a cement, sand, and water mixture through a pneumatic hose unless the employee is wearing protective head and face equipment.

Scope: This standard provides the requirements for equipment and tools used in concrete and masonry construction. 

Special Requirements: Locked, tagged, maintenance, lockout/tagout procedures

1926.702(a)(2) - No employee shall be permitted to enter storage facilities unless the ejection system has been shut down, locked out, and tagged to indicate that the ejection system is not to be operated.

1926.702(j) - Lockout/Tagout Procedures.

• 1926.702(j)(1) - No employee shall be permitted to perform maintenance or repair activity on equipment (such as compressors, mixers, screens or pumps used for concrete and masonry construction activities) where the inadvertent operation of the equipment could occur and cause injury, unless all potentially hazardous energy sources have been locked out and tagged.
• 1926.702(j)(2) - Tags shall read Do Not Start or similar language to indicate that the equipment is not to be operated.

Scope: This standard provides the requirements for cast-in-place concrete. 

Special Requirements: Drawings, plans, maintained, designed, qualified designer, engineer, tested, test results, inspects, load, rated capacity, references other standards

1926.703(a)(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.

1926.703(a)(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.

1926.703(b)(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.

1926.703(b)(3) - Erected shoring equipment shall be inspected immediately prior to, during, and immediately after concrete placement.

1926.703(b)(5) - The sills for shoring shall be sound, rigid, and capable of carrying the maximum intended load.

1926.703(b)(8)(i) - The design of the shoring shall be prepared by a qualified designer and the erected shoring shall be inspected by an engineer qualified in structural design. 

1926.703(c)(4) - Jacks and vertical supports shall be positioned in such a manner that the loads do not exceed the rated capacity of the jacks.

1926.703(c)(6) - The form structure shall be maintained within all design tolerances specified for plumbness during the jacking operation.

1926.703(e)(1)(i) - The plans and specifications stipulate conditions for removal of forms and shores, and such conditions have been followed, or

1926.703(e)(1)(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.

Scope: This standard provides the requirements for precast concrete.

Special Requirements: Maximum intended load

1926.704(b) - Lifting inserts which are embedded or otherwise attached to tilt-up precast concrete members shall be capable of supporting at least two times the maximum intended load applied or transmitted to them.

1926.704(c) - Lifting inserts which are embedded or otherwise attached to precast concrete members, other than the tilt-up members, shall be capable of supporting at least four times the maximum intended load applied or transmitted to them.

1926.704(d) - Lifting hardware shall be capable of supporting at least five times the maximum intended load applied or transmitted to the lifting hardware.

Scope: This standard provides the requirements for lift-slab operations.

Special Requirements: Designed, registered professional engineer, instructions, sketches, plans, designs, rated capacity, marked, competent person, certified welder, specifications, measures, references other standards

1926.705(a) - Lift-slab operations shall be designed and planned by a registered professional engineer who has experience in lift-slab construction. Such plans and designs shall be implemented by the employer and shall include detailed instructions and sketches indicating the prescribed method of erection. These plans and designs shall also include provisions for ensuring lateral stability of the building/structure during construction.

1926.705(b) - Jacks/lifting units shall be marked to indicate their rated capacity as established by the manufacturer.

1926.705(c) - Jacks/lifting units shall not be loaded beyond their rated capacity as established by the manufacturer.

1926.705(e) - Jacks/lifting units shall be designed and installed so that they will neither lift nor continue to lift when they are loaded in excess of their rated capacity.

1926.705(i) - If leveling is maintained by manual controls, such controls shall be located in a central location and attended by a competent person while lifting is in progress. In addition to meeting the definition in 1926.32(f) - definitions, the competent person must be experienced in the lifting operation and with the lifting equipment being used.

1926.705(k)(1) - No employee, except those essential to the jacking operation, shall be permitted in the building/structure while any jacking operation is taking place unless the building/structure has been reinforced sufficiently to ensure its integrity during erection. The phrase "reinforced sufficiently to ensure its integrity" used in this paragraph means that a registered professional engineer, independent of the engineer who designed and planned the lifting operation, has determined from the plans that if there is a loss of support at any jack location, that loss will be confined to that location and the structure as a whole will remain stable.

1926.705(k)(4) - Employers who comply with appendix A to 1926.705 shall be considered to be in compliance with the provisions of paragraphs (k)(1) through (k)(3) of this section.

1926.705(m) - All welding on temporary and permanent connections shall be performed by a certified welder, familiar with the welding requirements specified in the plans and specifications for the lift-slab operation.

1926.705(p) - Equipment shall be designed and installed so that the lifting rods cannot slip out of position or the employer shall institute other measures, such as the use of locking or blocking devices, which will provide positive connection between the lifting rods and attachments and will prevent components from disengaging during lifting operations.

Scope: This standard provides the requirements for masonry construction.

Special Requirements: Limited access zone

1926.706(a) - A limited access zone shall be established whenever a masonry wall is being constructed. The limited access zone shall conform to the following; [Reference paragraph (a)(1) - (5)].