Grouting of base plates can be accomplished for common base-plate sizes without the need for grout holes. However, the use of a grout hole should be considered when the smaller side dimension of the base plate exceeds approximately 24 in. Two grout holes may be required for very large plates or long rectangular plates. See the discussion on grouting in Appendix B of AISC Design Guide #11.
 DeWolf, John T. and David T. Ricker, 1990, Column Base Plates, AISC, Chicago, IL. Second Edition
last updated 1 January 2006