555-Directional Bore, 2023 & 556-Jack & Bore, 2023
555-Directional Bore, 2023 & 556-Jack & Bore, 2023
555 Directional Bore documents the approved construction methods, procedures, and materials for directional boring, while 556 Jack and Bore shows the approved construction methods, procedures, and materials for jack and bore, also known as auger boring; micro tunneling is also included in the category of jack and bore for purposes of specifications.