Title 15 - Public Improvements

Repealed Sections of Title 15 Public Improvements

 

15.08 Storm Sewers (Repealed)

(This entire chapter has been repealed. See 15.10)

Contents:

• 15.08 Storm Sewers (Repealed)
  • Article I. General Regulations
  • Article II. Design Requirements
  • Article III. Excavation and Trenching
  • Article IV. Concrete Culvert Pipe
  • Article V. Corrugated Metal Pipe
  • Article VI. Concrete Lined Ditch
  • Article VII. Concrete Box Culverts
  • Article VIII. Miscellaneous Regulations
  • Article IX. Maintenance and Inspection
  • Article X. Insurance and Surety
  • Article XI. Penalty - Enjoinment

Article I. General Regulations

15.08.010 General. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §3, 2000; SDR-1275 §1, 84)

Effective on: 1/1/1901

15.08.015 Approval of Construction. (Repealed. See 15.10.150)

Repealed. See 15.10.150.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §2, 2000; SDR-1340 §1, 85; SDR-349 §1, 65)

Effective on: 1/1/1901

15.08.020 Purpose. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-349 §2, 65)

Effective on: 1/1/1901

15.08.025 Generally. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-1275 §1, 84)

Effective on: 1/1/1901

Article II. Design Requirements

15.08.030 Design Formula for Rate of Runoff. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §2, 84; SDR-703 §3-1 (part), 72; SDR-349,B §3-1, 71; SDR-349 §3-1, 65)

Effective on: 1/1/1901

15.08.040 Rainfall and Intensity. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §4, 2000; SDR-703 §3-2 (part), 72; SDR-349,B §3-2, 71; SDR-349, §3-2 65)

Effective on: 1/1/1901

15.08.050 Runoff Coefficients. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §5, 2000; SDR-1275 §3, 84; SDR-703 §3-3, 72; SDR-349,B §3-3, 71; SDR-349 §3-3, 65)

Effective on: 1/1/1901

15.08.060 Drainage Area. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-703 §3-4, 72; SDR-349,B §3-4, 71; SDR-349 §3-4, 65)

Effective on: 1/1/1901

15.08.070 Design Formula Information. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §6, 2000; SDR-1275 §4, 84; SDR-703 §3-5, 72; SDR-349,B §3-5, 71; SDR-349 §3-5, 65)

Effective on: 1/1/1901

15.08.080 Design Calculations and Storm Sewer Plans. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §7, 2000; SDR-1275 §5, 84; SDR-703 §3-6, 72; SDR-349,B §3-6, 71; SDR-349 §3-6, 65)

Effective on: 1/1/1901

15.08.090 Velocities and Discharge Design. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §8, 2000; SDR-1275 §'6, 84; SDR-703 §3-7, 72; SDR-349,B §3-7, 71; SDR-349 §3-7, 65)

Effective on: 1/1/1901

15.08.100 Methods of Conveying Storm Water. (Repealed. See 15.10.200)

Repealed. See 15.10.200.

(History: Ord. SWM-2505 §2, 2004; SDR-2390 §1, 2002; SDR-2192 §9, 2000; SDR-1820 §1, 93; SDR-1612 §1, 89; SDR-1558 §1, 88; SDR-1340 §2, 85; SDR-1275 §7, 84; SDR-703 §3-8, 72; SDR-349,B §3-8, 71; SDR-349 §3-8, 65)

Effective on: 1/1/1901

15.08.110 Design of Rigid Conduits. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-703 §3-9, 72; SDR-349,B §3-9, 71; SDR-349 §3-9, 65)

Effective on: 1/1/1901

15.08.120 Underground Culverts or Conduits - Length - Handrails. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §10, 2000; SDR-1340 §3, 85; SDR-703 '3-§10, 72; SDR-349,B §3-10, 71; SDR-349,A §3-10, 68)

Effective on: 1/1/1901

15.08.130 Figure 1 - Rainfall Intensity Duration Frequency Curves. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §11, 2000; SDR-703 §3-10 (part), 72; SDR-349,B §1 (part), 71; SDR-349 §3 (part), 65)

Effective on: 1/1/1901

Article III. Excavation and Trenching

15.08.140 Scope. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-1, 65)

Effective on: 1/1/1901

15.08.150 General Requirements. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2379 §1, 2002; SDR-349 §4-2, 65)

Effective on: 1/1/1901

15.08.160 Blasting. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §8, 84; SDR-349 §4-3, 65)

Effective on: 1/1/1901

15.08.170 Unauthorized Excavation. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-4, 65)

Effective on: 1/1/1901

15.08.180 Removal of Water. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-5,65)

Effective on: 1/1/1901

15.08.190 Sheeting and Shoring. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1820 §2, 93; SDR-349 §4-6, 65)

Effective on: 1/1/1901

15.08.200 Stabilization. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-7, 65)

Effective on: 1/1/1901

15.08.210 Crushed Rock or Gravel Fills. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-8, 65)

Effective on: 1/1/1901

15.08.220 Trench Excavation. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9, 65)

Effective on: 1/1/1901

15.08.230 Alignment, Grade and Minimum Cover. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9-1, 65)

Effective on: 1/1/1901

15.08.240 Limiting Trench Widths and Pipe Clearances. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §12, 2000; SDR-349 §4-9-2, 65)

Effective on: 1/1/1901

15.08.250 Unauthorized Trench Widths. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9-3, 65)

Effective on: 1/1/1901

15.08.260 Mechanical Excavation. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9-4, 65)

Effective on: 1/1/1901

15.08.270 Excavation Below Pipe Subgrade. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §13, 2000; SDR-1275 §9, 84; SDR-349 §4-9-5, 65)

Effective on: 1/1/1901

15.08.280 Artificial Foundations in Trenches. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9-6, 65)

Effective on: 1/1/1901

15.08.290 Holes. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-9-7, 65)

Effective on: 1/1/1901

15.08.300 Pipe Embedment. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §14, 2000; SDR-349 §4-10, 65)

Effective on: 1/1/1901

15.08.310 Embedment Classes. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR- 2379 §2, 2002; SDR-349 §4-10-1, 65)

Effective on: 1/1/1901

15.08.320 Placement and Compaction. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §15, 2000; SDR-349 §4-10-2, 65)

Effective on: 1/1/1901

15.08.330 Trench Backfill. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-11, 65)

Effective on: 1/1/1901

15.08.340 Tamped Backfill. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR- 2379 §3, 2002; SDR-2192 §16, 2000; SDR-1275 §10, 84; SDR-349 §4-11-1, 65)

Effective on: 1/1/1901

15.08.350 Uncompacted Backfill. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §17, 2000; SDR-349 §4-11-2, 65)

Effective on: 1/1/1901

15.08.360 Structure Backfill. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §18, 2000; SDR-1275 §11, 84; SDR-349 §4-12, 65)

Effective on: 1/1/1901

15.08.370 Drainage Maintenance. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-13, 65)

Effective on: 1/1/1901

15.08.380 Protection of Trench - Backfill in Drainage - Courses.  (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §19, 2000; SDR-349 §4-14, 65)

Effective on: 1/1/1901

15.08.390 Disposal of Excess Excavated Materials. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §4-15, 65)

Effective on: 1/1/1901

15.08.400 Maximum Trench Widths.  (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §20, 2000; SDR-349 §4-16, 65)

Effective on: 1/1/1901

15.08.410 Minimum Trench Widths. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1820 §3, 93; SDR-349 §4-17, 65)

Effective on: 1/1/1901

15.08.420 Figure 2 - Embedment for Conduits. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-349 §4 (part), 65)

Effective on: 1/1/1901

Article IV. Concrete Culvert Pipe

15.08.430 Specifications Generally. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §21, 2000; SDR-1275 §12, 84; SDR-349 §5-1, 65)

Effective on: 1/1/1901

15.08.440 Reinforcement. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §5-2, 65)

Effective on: 1/1/1901

15.08.450 Joints. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §22, 2000; SDR-1275 §13, 84; SDR-349 §5-3, 65)

Effective on: 1/1/1901

15.08.460 Rubber Gasket Joints. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §23, 2000; SDR-349 §5-3.1, 65)

Effective on: 1/1/1901

15.08.470 Mastic Joints. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §24, 2000; SDR-1275 §14, 84; SDR-349 §3.2, 65)

Effective on: 1/1/1901

15.08.480 Mortar Joints. (Repealed)

Repealed.

(History: Ord. SDR-1275 §15, 84; SDR-349 §5-3.3, 65)

Effective on: 1/1/1901

15.08.490 Fine Aggregate. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §5-4, 65)

Effective on: 1/1/1901

15.08.500 Marking. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §16, 84; SDR-349 §5-5, 65)

Effective on: 1/1/1901

15.08.510 Joint Opening. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §25, 2000; SDR-1275 §17, 84; SDR-349 §5-6, 65)

Effective on: 1/1/1901

15.08.520 Test Reports. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-349 §5-7, 65)

Effective on: 1/1/1901

15.08.530 Bends. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §5-8, 65)

Effective on: 1/1/1901

15.08.540 Handling. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §26, 2000; SDR-349 §5-9, 65)

Effective on: 1/1/1901

15.08.550 Cleaning. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §5-10, 65)

Effective on: 1/1/1901

15.08.560 Alignment. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §27, 2000; SDR-1275 §18, 84; SDR-349 §5-11, 65)

Effective on: 1/1/1901

15.08.570 Laying Pipe. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §19, 84; SDR-349 §5-12, 65)

Effective on: 1/1/1901

15.08.580 Rubber Gasketed Joints. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-349 §5-13, 65)

Effective on: 1/1/1901

Article V. Corrugated Metal Pipe

15.08.590 Materials. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1413 §1, 86; SDR-1275 §20, 84; SDR-349 §6-1, 65)

Effective on: 1/1/1901

15.08.600 Handling and Installation. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §6-2, 65)

Effective on: 1/1/1901

Article VI. Concrete Lined Ditch

15.08.610 Design Requirements. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §28, 2000; SDR-1275 §21, 84; SDR-349 §7-1, 65)

Effective on: 1/1/1901

15.08.620 Concrete. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §29, 2000; SDR-2096 §1, 98; SDR-1275 §22, 84; SDR-1168 §1, 82; SDR-349 §7-2, 65)

Effective on: 1/1/1901

15.08.630 Testing. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-1275 §23, 84; SDR-349 §7-2.1, 65)

Effective on: 1/1/1901

15.08.640 Ditch Shape. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-349 §7-3, 65)

Effective on: 1/1/1901

15.08.650 Reinforcing. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §30, 2000; SDR-349 §7-4, 65)

Effective on: 1/1/1901

15.08.660 Expansion and Contraction Joints. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §31, 2000; SDR-1275 § 24, 84; SDR-349 §7-5.1, 65)

Effective on: 1/1/1901

15.08.670 Weep Holes. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §32, 2000; SDR-1275 §25, 84;SDR-349 §7-5.2, 65)

Effective on: 1/1/1901

15.08.680 Cut-off Walls. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §26, 84; SDR-349 §7-5.3, 65)

Effective on: 1/1/1901

15.08.690 Easements. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-349 §7-5.4, 65)

Effective on: 1/1/1901

Article VII. Concrete Box Culverts

15.08.692 Structural Design. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §1, 2000)

Effective on: 1/1/1901

15.08.694 Handrail and Fence. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §1, 2000)

Effective on: 1/1/1901

15.08.696 Bridge Box. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §1, 2000)

Effective on: 1/1/1901

15.08.698 Pre-cast Box Joint Openings. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §1, 2000)

Effective on: 1/1/1901

Article VIII. Miscellaneous Regulations

15.08.700 Curb Inlets. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2379 §4, 2002; SDR-2192 §34, 2000; SDR-1820 §4, 93; SDR-1736 §1, 92; SDR-1275 §27, 84; SDR-1168 §2, 82; SDR-349 §8-1.1, 65)

Effective on: 1/1/1901

15.08.710 Area Inlets. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §35, 2000; SDR-1275 §28, 84; SDR-1168 §3, 82; SDR-349 §8-1.2, 65)

Effective on: 1/1/1901

15.08.720 Manholes and Junction Boxes. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §36, 2000; SDR-1736 §2, 92; SDR-1275 § 29, 84; SDR-1168 §4, 82; SDR-349 §8-2, 65)

Effective on: 1/1/1901

15.08.730 Box Culverts. (Repealed)

Repealed.

(History: Ord. SDR-2192 §44, 2000; SDR-1275 §30, 84; SDR-1168 §5, 82; SDR-349 §8-3, 65)

Effective on: 1/1/1901

15.08.740 Easements. (Repealed. See 15.10.100)

Repealed. See 15.10.100.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §33, 2000; SDR-349 §7-5.4, 65)

Effective on: 1/1/1901

Article IX. Maintenance and Inspection

15.08.750 Maintenance. (Repealed. See 15.10.500)

Repealed. See 15.10.500.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §38, 2000; SDR-1275 §32, 84; SDR-349 §8-5, 65)

Effective on: 1/1/1901

15.08.760 Inspections. (Repealed)

Repealed.

(History: Ord. SDR-2192 §40 & '44, 2000; SDR-1275 §34, 84; SDR-349 §8-7, 65)

Effective on: 1/1/1901

15.08.770 Variance Submission. (Repealed. See 15.10.800)

Repealed. See 15.10.800.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §41, 2000; SDR-349 §8-8, 65)

Effective on: 1/1/1901

15.08.780 Engineer's Approval. (Repealed. See 15.10.150)

Repealed. See 15.10.150.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §42, 2000; SDR-1275 §35, 84; SDR-349 §9, 65)

Effective on: 1/1/1901

Article X. Insurance and Surety

15.08.790 Insurance. (Repealed. See 15.10.600)

Repealed. See 15.10.600.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §37, 2000; SDR-1275 §31, 84; REP-1061 §1, 80; SDR-349 §8-4, 65)

Effective on: 1/1/1901

15.08.795 Surety Submission Amount - Period. (Repealed. See 15.10.700)

Repealed. See 15.10.700.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §39, 2000; SDR-1820 §5, 93; SDR-1397 §1, 86; SDR-1275 §33, 84; SDR-349 §8-6, 65)

Effective on: 1/1/1901

Article XI. Penalty - Enjoinment

15.08.800 Violation - Penalty. (Repealed. See 15.10.900)

Repealed. See 15.10.900.

(History: Ord. SWM-2505 §2, 2004; SDR-2192 §43, 2000; SDR-1275 §36, 84; SDR-349 §10, 65)

Effective on: 1/1/1901

15.08.810 Enjoinment. (Repealed. See 15.10.950)

Repealed. See 15.10.950.

(History: Ord. SWM-2505 §2, 2004; SDR-1275 §37, 84; SDR-349 §11, 65)

Effective on: 1/1/1901