(1) The foundation soil must be carried out in a dry condition. Do not probe after being rained.

       (2) If the drilling cannot continue, the foreman should be consulted, and the drilling should be appropriately shifted, and the number of hammers must be filled arbitrarily.

       (3) Arrangement of records and floor plan: colored pencils or symbols on the record sheet to separate the different hammering holes.

       (4) On the drill hole layout drawing, indicate the position of the over-hard or over-soft hole number for analysis and processing by design and survey personnel.

       (5) All on-site construction personnel must wear safety helmets.

       (6) Operators must concentrate on the construction, and the hammer supporting staff and the drill rod supporting staff should cooperate closely and concentrate to prevent accidents.

       (7) On-site construction personnel are strictly prohibited from smoking and frolicking during the construction process, and are not allowed to carry out construction work shirtless.

       (8 In order to prevent the location of the drill hole, the strength of the drill hole, and the depth of the drill hole from being confused, the driller should be as stable as possible, and it is easy not to temporarily transfer personnel or change frequently.

       (9) Before the drilling work is carried out, the drilling personnel must be confessed, and the specific requirements for the drilling quality and production safety must be put forward.

       (10) Drilling must be drilled with the required number of steps and the depth of each step. According to the requirements, each drill hole is hit in five steps, and each step is driven into 300mm. The drill recorder must be serious and honest about the number of hammers hit per step. Fill in the drilling record form carefully.