2008年9月19日 · curb details for curb box joints. concrete sidewalk is placed adjacent to this curb, see standard sheet miscellaneous when vertical faced curb less than 9" wide is used with curb boxes cu1, cu2, and cu3 and and m100g require anchors when placed adjacent to concrete pavement or shoulder. curb types m150a, vf150a and m100a require curb anchor.