Match the following regulations to their appropriate categories. Noncompatible materials must be segregated in storage Lumber material storage Special type material storage It must be stacked on level and solidly supported sills All materials stored in tiers must be stacked, racked, blocked, interlocked or otherwise secured to prevent sliding, falling or collapse Keep storage areas free from accumulated materials that cause tripping, fires or explosions, or that may contribute to harboring rats and pests General material storage Housekeeping SUBMIT