Answer :
Final answer:
The ASTM standards for clay brick pavers used in pedestrian walkways are specified under the ASTM C section relating to masonry units. The exact specification number is necessary to identify the right standard. Provided references are for soil testing and do not directly apply to brick pavers.
Explanation:
The requirements for clay brick pavers used in pedestrian walkways are detailed in specific ASTM standards. However, the student's question does not provide the exact specification number which is key to identifying the right standard. In the realm of engineering and construction, ASTM (American Society for Testing and Materials) standards are essential for ensuring the quality and safety of building materials. While the provided references are related to soil testing and compaction methods (ASTM D698, ASTM D2435, and ASTM D4767), these are not directly applicable to clay brick pavers for walkways.
For clay brick pavers, the relevant ASTM standards would typically address the properties such as compressive strength, absorption, the coefficient of friction, freeze-thaw durability, and dimensions. Unfortunately, without the proper ASTM standard number, it's not possible to provide the exact requirements for clay brick pavers used in pedestrian walkways. ASTM standards related to bricks and masonry units can be found in the section C of the ASTM standards, which are more relevant for materials such as clay brick pavers.