# Standard Interpretations
1 - 1926.652 - Protective system requirements for excavations that will not be entered by employees.
2 - 1926.652 - Registered professional engineer approval requirements for combination trench shield and sloping system trenches with a depth greater than 20 feet.
3 - 1926.652 - Permissibility of installing a trench shield so that the top is flush with the surface.
4 - 1926.652 - Registered professional engineer approval requirements for manufactured trench protection systems deeper than 20 feet.
5 - 1926.652 - Clarification of utility "owner" as used in the Safety and Health Standards for Excavations, Underground Installations.
6 - 1926.652 - Clarification of house foundation/basement excavation;Fall protection requirements.
7 - 1926.652 - Concerns with the OSHA June 30 memorandum concerning the application of 29 CFR 1926.652 to house foundation/basement excavations.
8 - 1926.652 - Suspension of 29 CFR 1926.652 to House Foundation/Basement Excavations.
9 - 1926.652 - Whether or not organic rock, such as "Miami oolite rock" should be considered by OSHA as "stable rock".
10 - 1926.652 - Safety Procedures During Gunite and Shotcrete Pool Construction.
11 - 1926.652 - Plywood as a substitute for meeting the standard.
12 - 1926.652 - Design of protective systems for employees working in trenches.
13 - 1926.652 - Design of Protective Systems in Trenches.
14 - 1926.652 - Excavation standards relating to aluminum rail.
15 - 1926.652 - Use of plywood for shoring and support systems in trenches and excavations.
16 - 1926.652 - Standards addressing excavations
17 - 1926.652 - Classification and subsequent designs may be used if they have been approved by a registered professional engineer.
18 - 1926.652 - Testing of type C soil is not necessary if employees are adequately protected.
19 - 1926.652 - Clarification of Standards
20 - 1926.652 - Interpretation of 1926.652, Table P-2
21 - 1926.652 - Specific Trenching Requirements.
22 - 1926.652 - Shoring sides of trenches in hard or compact soil.
23 - 1926.652 - Specific trenching requirements as it pertains to shoring.
24 - 1926.652 - Clarification of excavations, trenching, and shoring standards.