Installation Instructions

• Confirm no underground utilities within excavation area (call 8‑1‑1 or local equivalent).

• Verify enclosure load rating aligns with expected traffic (pedestrian, medium duty, traffic rated).

• Select a level location or ensure proper drainage if grading is necessary.

• Excavate a hole approximately 12–18 inches wider and longer, and 6–8 inches deeper than the enclosure.

• Ensure the bottom is level and free of debris or loose soil.

• Place 6 inches of clean, angular crushed stone (¼"–¾"), free of organic material.

• Lightly tamp the base to create a stable, level surface. Avoid heavy mechanical equipment.

• Remove enclosure cover before lowering.

• Carefully set the enclosure onto the stone bed; adjust it so the top edge is flush with final ground grade and oriented appropriately.

• For large or traffic-rated boxes, use proper lifting straps or equipment, never by the cover.

• If compaction is expected to exceed 95% or if heavy machinery will be used nearby, place internal bracing (e.g., 2×4 wood) at mid-depth to support sidewalls.

• Begin infilling around the enclosure in 6-inch layers, tamping each layer manually.

• Ensure fill works into any exterior ribs or voids for uniform support.

• For pedestrian or greenbelt areas: Finish with compacted backfill graded to site.

• For sidewalks or occasional vehicle traffic: Install a 6-inch concrete collar around the top perimeter for structural support.

• If exposed to nondeliberate vehicular traffic: Use a reinforced concrete collar as needed, consistent with enclosure load rating and local codes.

• Ensure the enclosure cover is securely reinstalled, seated flush, and bolted if necessary.

• Grade final surface to slope away from enclosure to facilitate drainage.

• Remove tools and debris from the site.