Sec. 529A ABLE accounts may be set up before the IRS issues guidance. By Sally P. Schreiber, J.D. The IRS announced on Tuesday that state ABLE programs that are established before the Service issues guidance under Sec. 529A will be deemed to comply with the rules when they are issued.
ORDINARY PORTLAND CEMENT (OPC). Ordinary Portland Cement (OPC) is the most common cement used in general concrete construction when there is no exposure to sulphates in the soil or groundwater.RDINARY PORTLAND CEMENT (OPC). Ordinary Portland Cement (OPC) is the most common cement used in general concrete construction when there is no exposure to sulphates in the soil or groundwater.
OPC is ordinary Portland cement and PPC is Portland pozolona cement. OPC is obtained by grinding clinker and gypsum whereas PPC is obtained by grinding clinker gypsum and hig â¦ h reactive silica. High reactive silica improves the quality of cement by reducing liberated lime.+ 28 others found this useful.PC is ordinary Portland cement and PPC is Portland pozolona cement. OPC is obtained by grinding clinker and gypsum whereas PPC is obtained by grinding clinker gypsum and hig â¦ h reactive silica. High reactive silica improves the quality of cement by reducing liberated lime. + 28 others found this useful.