Moderate. Simple, small berms without utility integration are generally feasible for skilled homeowners. Projects involving significant grading changes, extensive drainage plans, electrical wiring, or plumbing for irrigation systems require professional design, permitting, and installation to ensure code compliance and long-term stability.
Landscape berm construction primarily involves earthwork and grading. The complexity score reflects the potential for integration of utilities (electrical for lighting/irrigation controls, plumbing for irrigation systems) and adherence to specific DuPage County stormwater management and 42-inch frost depth requirements, which elevate it beyond simple landscaping.
Project Guidelines & Rules
General Project Administration & Permits
4 Rules
Permit Requirement
Consult your local building department for specific permit requirements based on project scope, size, and location.
Site Plan Submission
A detailed site plan may be required for review, outlining grading, drainage, setbacks, and utility integration. (IRC R106.1)
Property Line Setbacks
Berms must adhere to property line setback requirements established by your local municipality's zoning ordinance.
Erosion and Sediment Control Plan
Projects impacting land disturbance may require an Erosion and Sediment Control Plan. (DuPage County Stormwater Management Ordinance, as applicable to project size and scope).
Earthwork, Grading & Structural Stability
5 Rules
Berm Height and Slope
Berm design must ensure positive drainage away from structures (IRC R401.3). Local zoning ordinances may dictate maximum allowable heights and slopes.
Positive Drainage
Finish grade shall slope a minimum of 6 inches in 10 feet away from the foundation of any structure. (IRC R401.3)
Soil Compaction
Fill material used in berm construction should be free of organic matter, properly compacted to prevent settlement and ensure stability. (IRC R401.2, R401.4 - relevant for soil bearing and stability).
Material Selection for Berm Construction
Use clean, stable, inorganic fill material, free of organic matter or construction debris, suitable for landscape use and ensuring proper drainage.
Frost Depth Considerations for Adjacent Structures or Buried Utilities
Any footings for adjacent structures or buried utility lines (electrical, plumbing) must extend a minimum of 42 inches below finished grade to prevent damage from frost heave. (DuPage County Standard, IRC R403.1.1)
Drainage & Stormwater Management
3 Rules
Surface Water Management
Grading shall be performed so as to drain surface water away from the foundation and to prevent the accumulation of water on the lot. (IRC R401.3)
Stormwater Runoff Impact
Berm construction shall not adversely impact adjacent properties or the overall stormwater management of the site. Refer to the DuPage County Stormwater Management Ordinance for specific regulations, particularly for projects disturbing more than 1 acre or impacting floodplains/wetlands.
Prevention of Ponding
The finished berm surface and surrounding grade shall be designed to prevent ponding of water. (IRC R401.3)
Electrical Installations (If Applicable)
4 Rules
Underground Conductor Depth
Underground conductors must meet minimum cover requirements. For 120-volt residential circuits with GFCI protection, direct burial cable (Type UF) is permitted at 12 inches depth. For other applications or non-GFCI protected circuits, greater depths or conduit protection are required. (NEC Table 300.5, Column 4 for dwelling units outside with GFCI protection and maximum 20A circuit; consult other columns for different scenarios).
Wiring Methods for Landscape Lighting/Outlets
All outdoor wiring and equipment must be suitable for wet locations. Use approved direct-burial cables or conductors in approved raceways. (NEC Articles 300, 314, 406.9, 411 for low-voltage lighting).
GFCI Protection
All 125-volt, single-phase, 15- and 20-ampere receptacles installed outdoors and circuits supplying landscape lighting operating at 150 volts or less to ground must have ground-fault circuit-interrupter (GFCI) protection. (NEC 210.8(A)(3), 210.8(B), and 411.3(B)).
Protection of Conductors from Damage
Underground conductors and cables shall be protected from physical damage by raceways, suitable covers, or by their inherent design. (NEC 300.4).
Plumbing Installations (If Applicable - for Irrigation)
4 Rules
Potable Water Supply Protection
All connections to the potable water supply system must be installed to prevent contamination. (Illinois Plumbing Code, Section 890.1110).
Backflow Prevention for Irrigation Systems
An approved backflow prevention device (e.g., Pressure Vacuum Breaker (PVB) or Reduced Pressure Zone (RPZ) assembly) is required for all irrigation systems connected to the potable water supply. (Illinois Plumbing Code, Section 890.1130, 890.1140).
Water Line Burial Depth
All buried water lines, including those for irrigation, must be installed a minimum of 42 inches below finished grade to protect against freezing. (Illinois Plumbing Code, Section 890.1200 - incorporating DuPage County Frost Depth).
Permit for Water Service Connection
Connection to the public or private water supply system typically requires a permit from your local building department and/or water purveyor.
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