CONTROLLED LOW STRENGTH MATERIALS (CLSM)

CONTROLLED LOW STRENGTH MATERIAL (CLSM) This information bulletin provides a general guideline for using controlled low strength material (CLSM), generally known as slurry in the construction industry, in lieu of soil for backfill. The 2014 Los Angeles Building Code (LABC) allows the use of CLSM for the backfill of excavations under Section 1804.2, and for the support of foundations under Section 1804.6.