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Division 4

31-26 APPURTENANCES IN PUBLIC RIGHTS-OF-WAY.

Danville Zoning Code · 2026-07 edition · updated 2026-07-09 · Danville

31-26.1 Culverts.

a. Under-Driveway Culverts . Culverts under driveway entrances for roadside ditches shall be adequate to carry the design flow, but shall not be less than twelve (12") inches inside diameter.

b. Street-Crossing Culverts . Culverts crossing the street shall be of a size adequate to carry the design flow, but shall not be smaller than fifteen (15") inches inside diameter for concrete or eighteen (18") inches inside diameter for corrugated metal pipe or aluminum pipe.

c. Culverts Outside the Roadway . Culverts for use outside the roadway may be of any approved type and strength to meet field conditions.

31-26.2 Roadside Ditches.

a. Discharge to Roadside Ditches . No concentrated flow of storm waters from a subdivision shall be discharged into a roadside ditch.

b. Roadside Ditch Sections . Roadside ditch sections shall be subject to the approval of the Engineering Department as to shape, size, gradient, lining, and location within the road right-of-way, and shall have the required hydraulic capacity.

c. Purpose of Roadside Ditches . Roadside ditches and gutters shall be provided to carry the drainage from the road and tributary lands without damage to the roadbed or abutting property.

d. Roadside Ditch Gradients . The maximum gradient for earth roadside ditches shall not exceed four (4%) percent, nor be less than one (1%) percent. The minimum gradient for lined roadside ditches shall not be less than one (1%) percent.

31-26.3 Miscellaneous.

a. Piping Requirements . All corrugated steel and aluminum pipe intended for use within the roadway shall be of the gauge recommended by the manufacturer and approved by the Engineering Department for the cover and service conditions required. Corrugated steel and aluminum pipe shall be bituminous coated where required by the Engineering Department. Additional protective coating or paving of metal pipes may be required for severe service conditions. The gauge of pipe proposed at each location shall be noted on the improvement plans.

b. Storm Drain Inlets . Storm drain inlets shall be of a design approved by the Engineering Department. Water shall be directed into the storm drain inlet without a reversal of direction of the flow of the water.

c. Drainage Structures to Allow for Tidal Action and Flood Stage . Drainage structures shall allow for tidal action and flood stage where applicable. The hydraulic pressure elevation in any storm drainage system shall be at least one and twenty-fivehundredths (1.25') feet below the top of any inlet grate or manhole.

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▸ Contents — Danville Zoning Code
Danville Zoning Code
  1. Chapter I
  2. Chapter II
  3. Chapter III
  4. Chapter IV
  5. Chapter V
  6. Part 1 — GENERAL
  7. Part 2 — CARDROOM LICENSES
  8. Part 3 — CARDROOM RESTRICTIONS
  9. Part 5 — SUSPENSION, REVOCATION, CHANGE AND VARIANCE
  10. Part 1
  11. Part 2
  12. Part 3
  13. Part 4
  14. Part 1
  15. Division 1 — FORM AND CONTENTS
  16. Division 2 — SUPPLEMENTARY DOCUMENTS
  17. Division 3 — CHECKING
  18. Division 4 — APPROVAL
  19. Division 1
  20. Division 3
  21. ▸ Division 4
    Overview
    1. 31-14 PLANS.
    2. 31-15 CONSTRUCTION WORK.
    3. 31-16 STREET LIGHTING.
    4. 31-17 SIDEWALKS AND PATHS.
    5. 31-18 UNDERGROUND UTILITIES.
    6. 31-19 CURBS AND GUTTERS.
    7. 31-20 MISCELLANEOUS PROVISIONS.
    8. 31-21 RESERVED.
    9. 31-22 STREETS.
    10. 31-23 SURVEY MONUMENTS.
    11. 31-24 BRIDGE CROSSINGS AND MAJOR THOROUGHFARES.
    12. 31-25 DRAINAGE; MINIMUM REQUIREMENTS.
    13. 31-26 APPURTENANCES IN PUBLIC RIGHTS-OF-WAY.
    14. 31-27 OPEN CHANNELS AND CONDUITS.
    15. 31-28 LEVEES.
    16. 31-29 EASEMENTS.
    17. 31-30 MISCELLANEOUS PROVISIONS.
    18. 31-31 WATER AND SEWERS.
    19. 31-32 FENCES.
    20. 31-35 PLANNING COMMISSION AUTHORITY.
    21. 31-36 PROCEDURE.
    22. Chapter XXXII
  22. Division 1 — INTRODUCTION
  23. Division 2 — SPECIFIC USES AND DEFINITIONS
  24. Division 3 — DEVELOPMENT STANDARDS
  25. Division 4 — PARKING STANDARDS
  26. Division 5 — DEVELOPMENT PLAN REVIEW PROCEDURES
  27. Division 1 — GENERAL
  28. Division 2 — REQUIREMENTS AND STANDARDS
  29. Division 3 — CREDIT; EXEMPTIONS
  30. Division 4 — DISPOSITION OF FEES AND LAND
  31. Division 5 — PROCEDURES
  32. Division 1 — GENERAL
  33. Division 3 — ENFORCEMENT REGULATIONS
  34. Division 1 — NONRESIDENTIAL CONSTRUCTION
  35. Division 2 — RESIDENTIAL CONSTRUCTION
  36. Division 1 — GENERAL PROVISIONS
  37. Division 2 — APPLICATIONS
  38. Division 3 — ADMINISTRATION
  39. Division 4 — PROVISIONS FOR FLOOD HAZARD REDUCTION
  40. Division 5 — FLOOD HAZARD VARIANCE PROCEDURES
  41. Division 2
  42. Division 5
  43. Division 2 — REQUIREMENTS AND STANDARDS
  44. Division 4
  45. Division 5
  46. Division 2
  47. Division 1
  48. Division 2

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