HomeMy WebLinkAboutDrainage Reports - 08/08/2019City of Fort Collins Approved Plans
Approved by:
Date:
Wes Lamarque
8/8/2019
Project:
Inlet ID:
Gutter Geometry (Enter data in the blue cells)
Maximum Gutter Capacity Based On Allowable Water Spread
Maximum Flow Based On Allowable Water Spread QT =27.6 53.3 cfs
Maximum Gutter Capacity Based on Allowable Gutter Depth
Total Discharge for Major & Minor Storm Q = 18.7 81.5 cfs
Max Flow Based on Allow. Gutter Depth (Safety Factor Applied)Qd =15.2 53.5 cfs
Max. Allowable Gutter Capacity Based on Minimum of QT or Qd Qallow =15.2 53.3 cfs
MAJOR STORM max. allowable capacity OK - greater than flow given on sheet 'Q-Peak'
ALLOWABLE CAPACITY FOR ONE-HALF OF STREET (Minor & Major Storm)
Ridgewood Hills Tract A
Inlet at Design Pt 8
(Based on Regulated Criteria for Maximum Allowable Flow Depth and Spread)
MINOR STORM max. allowable capacity OK - greater than flow given on sheet 'Q-Peak'
Project:
Inlet ID:
Design Information (Input)
Street Hydraulics: OK - Q < maximum allowable from sheet 'Q-Allow'
Design Discharge for Half of Street (from Sheet Q-Peak )Qo =0.40 2.18 cfs
Grate Analysis (Calculated)
Under No-Clogging Condition
Under Clogging Condition
Actual Interception Capacity Qa =N/A N/A cfs
Carry-Over Flow = Qo-Qa Qb =N/A N/A cfs
Curb or Slotted Inlet Opening Analysis (Calculated)
Under No-Clogging Condition
Under Clogging Condition
Actual Interception Capacity Qa =0.40 1.54 cfs
Carry-Over Flow = Qb(GRATE)-Qa Qb =0.00 0.64 cfs
Summary
Total Inlet Interception Capacity Q = 0.40 1.54 cfs
Total Inlet Carry-Over Flow (flow bypassing inlet)Qb =0.00 0.64 cfs
Capture Percentage = Qa/Qo =C% = 100.0 70.5 %
INLET ON A CONTINUOUS GRADE
Ridgewood Hills Tract A
Inlet at Design Pt 8
Project:
Inlet ID:
Gutter Geometry (Enter data in the blue cells)
MINOR STORM Allowable Capacity is based on Depth Criterion
MAJOR STORM Allowable Capacity is based on Depth Criterion Qallow =16.7 52.8 cfs
Major storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
ALLOWABLE CAPACITY FOR ONE-HALF OF STREET (Minor & Major Storm)
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 10
(Based on Regulated Criteria for Maximum Allowable Flow Depth and Spread)
Minor storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
Project:
Inlet ID:
Design Information (Input)
Street Hydraulics: OK - Q < maximum allowable from sheet 'Q-Allow'
Total Inlet Interception Capacity Q = 0.9 4.1 cfs
Total Inlet Carry-Over Flow (flow bypassing inlet)Qb =0.0 0.0 cfs
Capture Percentage = Qa/Qo =C% = 100 100 %
INLET ON A CONTINUOUS GRADE
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 10
Project:
Inlet ID:
Gutter Geometry (Enter data in the blue cells)
MINOR STORM Allowable Capacity is based on Depth Criterion
MAJOR STORM Allowable Capacity is based on Depth Criterion Qallow =16.7 52.8 cfs
Major storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
ALLOWABLE CAPACITY FOR ONE-HALF OF STREET (Minor & Major Storm)
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 11
(Based on Regulated Criteria for Maximum Allowable Flow Depth and Spread)
Minor storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
Project:
Inlet ID:
Design Information (Input)
Street Hydraulics: OK - Q < maximum allowable from sheet 'Q-Allow'
Total Inlet Interception Capacity Q = 0.9 5.3 cfs
Total Inlet Carry-Over Flow (flow bypassing inlet)Qb =0.0 0.0 cfs
Capture Percentage = Qa/Qo =C% = 100 100 %
INLET ON A CONTINUOUS GRADE
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 11
Project:
Inlet ID:
Gutter Geometry (Enter data in the blue cells)
MINOR STORM Allowable Capacity is based on Depth Criterion
MAJOR STORM Allowable Capacity is based on Depth Criterion Qallow =16.7 52.8 cfs
Major storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
ALLOWABLE CAPACITY FOR ONE-HALF OF STREET (Minor & Major Storm)
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 12
(Based on Regulated Criteria for Maximum Allowable Flow Depth and Spread)
Minor storm max. allowable capacity GOOD - greater than flow given on sheet 'Q-Peak'
Project =
Inlet ID =
Design Information (Input)
Grate Information
Curb Opening Information
Total Inlet Interception Capacity (assumes clogged condition)Qa =5.4 8.6 cfs
Inlet Capacity IS GOOD for Minor and Major Storms (>Q PEAK)
INLET IN A SUMP OR SAG LOCATION
Ridgewood Hills Tract A
Gutter & Inlet Analysis at DP 12
Override Depths