1.0.1 This specification was formulated with a view to achieving advanced technology, economy and rationality, safety and usability, guaranteed quality and environmental protection in investigation, design, construction and quality checkout of large-diameter belled cast-in-place pile.
1.0.2 This specification is applicable to investigation, design, construction and quality checkout of large-diameter belled cast-in-place pile in construction engineering.
1.0.3 For investigation, design, construction and quality checkout of large-diameter belled cast-in-place pile, comprehensive analysis shall be carried out for engineering geology and hydrogeological conditions of construction site, superstructure type, construction technology and conditions as well as the environment; pile hole technology is reasonably selected; construction safety and quality control are strengthened and pile arrangement is optimized so as to save resources.
1.0.4 Investigation, design, construction and quality checkout of large-diameter belled cast-in-place pile shall meet not only those specified in this specification, but also the requirements of relevant current national standard.
