Subdrains Pavers + (50 mm ASTM #8) Base (100 mm ASTM #57) Subbase (200 mm ASTM #2) Subbase (125 mm CDOT Class 5) 28
Subdrains 29
Base Materials Availability – Local DOT aggregate specifications – Industry recommendations – Local aggregate sources • Compaction – No standard Proctor density – Establish target density – Roller versus plate compactor (parking lot/driveway) – Lift thickness • Angularity and hardness 30
Base/Subbase Compaction 31
Use the Right Equipment 32
Not the Wrong Equipment 33
Final Uniform Surface 34
Paver Installation Mechanical installation reduces construction time No curing – immediate availability to traffic Can be reinstated after repairs Guide construction specs at www.icpi.org 35
Pervious Concrete Installation 36
Pervious Concrete Installation 37
Maintenance Annually : inspection of observation well after major storm, vacuum and sweep surface – improves infiltration Maintenance checklist Model maintenance agreement 38
39
Small Scale Permeability Improvements 40
Larger Scale Maintenance 41
42
Winter Maintenance 50
Winter Maintenance 51
Keep Site Clean During Construction 52
Detailing – Poor Practice 53
Permeable 54
Permeable 55
Restrict Heavy Vehicles 56
Permeable Pavement Details/Examples 57
Zorinsky Recreation Complex Omaha, NE 58
Thule Street, Colorado 59
60
61
Manhattan, Kansas Things Not to Do 62
Sidewalk Features 63
Main Street ‐ Fort Morgan, Colorado 64
Toronto Botanical Gardens 65
Brampton Veterinary Hospital 66
Brampton Commuter Parking Lot 67
Natural Stone 68
Things Not to Do 69
Things Not to Do 70
Things Not to Do 71
Alleyways 72
Dealing with Slopes 73
Alleyway 74
Completed Alleyway 75
Permeable Roadway Shoulders Perforated Channel Lane Permeable Shoulder Surface Course Dense Graded Base Dense Graded Subbase Subgrade Drainage Pipe Impermeable Liner (Optional) 76
Detailing – Poor Practice 77
Detailing – Poor Practice 78
Detailing – Poor Practice 79
Settlement of Base/Subbase 80
Settlement and Ponding at Transition 81
Jointing for Pervious Concrete Many are not jointed at all – random cracking is not considered a negative on the textured surface 82
Strange Choice of Joint Location 83
Poor Construction Joint 84
Poor Jointing 85
Special Features of Some Pavers 86
Loss of Permeability or Heavy Flows 87
Deep Clogging 88
Joint Raveling 89
Large Scale Raveling 90
High Severity Raveling 91
High Severity Raveling 92
Asphalt Raveling 93
Conventional Paver Surface 94
Turn into a Permeable Pavement??? 95
What is Wrong Here? 96
Joint Much Too Wide 97
Too Complicated 98
Very Good 99
No Sliver Pieces 100
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