Section 3: Storm Drain and Flood Control

No.
Storm Drain and Flood Control Facilities
Comments
300-2 Curb Opening Catch Basin  Stencil or sign is  required per Std. 
Detail 385. 
304-2 Grating Catch Basin - Alley (Longitudinal) Stencil or sign is  required per Std. 
Detail 385.
305-2 Grating Catch Basin -Alley (Transverse)  Stencil or sign is required per Std.
Detail 385.
307-2 Curb Opening Catch Basin with  Manhole in Street  Stencil or sign is required per Std.
Detail 385.
308-1 Monolithic Catch Basin Connection  
309-1 Catch Basin Reinforcement   
310-2 Catch Basin Face Plate Assembly and Protection Bar  
311-2 Frame and Grating for Catch Basins Note 6 is revised  to delete references to Std. Plans 301, 302 and 303. 
312-2 Catch Basin Manhole Frame and Cover  Covers shall be cast  with the letter "D" for storm drain. 
Agency identification is not required. For Note 6, inspections prior to shipment  will not be required. 
A compliance certification delivered to the Engineer from the supplier will be acceptable.
313 Local Depressions at Catch Basins  
314-2 Modifications for Side Opening  Catch Basins  Delete rear culvert  entrance from Case 
1. Refer to Std. Detail 350 for rear culvert  entrance detail. 
320-1 Manhole Pipe to Pipe Main Line  ID=900 mm (36") or Larger  Manhole backfill from  the top of pipe bedding to roadway subgrade shall be either sand compacted to 95% or structural backfill. 
321-1 Manhole Pipe to Pipe (One or Both  Main Line ID's 825mm (33") or Smaller  Manhole backfill from  the top of pipe bedding to roadway subgrade shall be either sand compacted to 95% or structural backfill. 
322-1 Manhole Pipe to Pipe (Large Side Inlet) Manhole backfill from  the top of pipe bedding to roadway subgrade shall be either sand compacted to 95% or structural backfill. 
Delete 12" and 15" sizes from Table for Values of T on sheet 2. For Note 12b, "300 mm (12")"  is modified to "450mm (18")". 
323-1 Manhole - Concrete Box Storm Drain  
324-1 Manhole Shaft with Eccentric Reducer  
326-1 Manhole Shaft 900 mm  (36") without Reducer   Steps shall apply to  special manhole shaft with grade rings. 
327-1 Manhole for Existing RCB  
328-1 Pressure Manhole Shaft  with Eccentric Reducer   
329-1 Pressure Manhole Shaft and Pressure  Plate Detail 914mm (36") without Reducer   
330-1 Manhole Shaft Safety Ledge  
331-2 Junction Structure - Pipe to Pipe Inlet  ID 600 mm (24") or ID > Main Line ID   Delete 12" and 15"  sizes from Table for Values of T on sheet 1. 
332-1 Junction Structure - Pipe to Pipe  [IDs 600 mm (24")]  Delete Note 7 and all  references to CSP materials. This standard only applies to private storm drains (not public storm drains). 
Connection openings to existing facilities shall be core drilled.
333-1 Junction Structure - Pipe to RCB Delete 12" and 15"  sizes from Table on sheet 1. 
334-1 Junction Structure - Pipe to RCB  Inlet ID s 750 mm (30")  Delete Note 2 and all  references to CSP materials. 
335-1 Pipe Connections to Existing Storm Drains Delete Notes 4 and 5  and all references to CSP materials. This standard only applies to private storm drains (not public storm drains). Connection openings to existing facilities shall be core drilled. 
340-1 Transition Structure Pipe to Pipe  
341-1 Transition Structure Single RCB to  Single RCB    
342-1 Transition Structure RCB to Pipe  
343-1 Transition Structure Single RCB to  Double RCB   
344-1 Transition Structure Double RCB to  Double RCB   
345-1 Transition Structure Double RCB to  Triple RCB    
346-1 Transition Structure Triple RCB to  Triple RCB    
350-B Private / On-Site Pipe  Connection to Catch Basin    
360-1 Sloped Protection Barrier   
361-1 Trash Rack (Inclined)  
380-3 Concrete Collar for RCP 300 mm (12”)  through 1800 mm (72”)  For Note 9, “525 mm  (21”)” is modified to “450 mm (18”).” 
381-1 Abandonment Seals for  Manholes and Inlets   
382-1 Window Details for Multiple  RCB Structures    
383-1 Velocity Control Ring Precast RCP Section  
384-2 Energy Dissipator – Impact Basin  with Vertical Baffle Wall    
385 Stencil and Sign for Drainage Inlet   
390 Lot Grading and Drainage  
391 Interceptor Drain   
392 Terrace Drain   
393 Down Drain   
394 Down Drain Intersections and Outlets   
395 Down Drain to Pipe Transition   
396 Riprap Protection   
397 French Drain