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→Construction stages and LID types
For this reason, Stages 1-2 and 5 of the LID construction process are fundamentally similar for all sub-surface and ground-level LID types. To illustrate, STEP's recommended processes for excavation do not differ between LID practice types. Excavation procedures are the same, whether for a bioretention garden or a permeable pavement parking lot. On the other hand, stage 4 sub-tasks will vary depending on whether the LID practice's surface is vegetated or permeable pavement. Some sub-tasks in stage 3 will also vary depending on the LID type. For example, permeable pavements often require compaction of sub-surface storage layers. The following sections give a brief description of each over-arching stage, a list of sub-tasks for each stage, and links to the page dedicated to each main LID construction stage.
For this reason, Stages 1-2 and 5 of the LID construction process are fundamentally similar for all sub-surface and ground-level LID types. To illustrate, STEP's recommended processes for excavation do not differ between LID practice types. Excavation procedures are the same, whether for a bioretention garden or a permeable pavement parking lot. On the other hand, stage 4 sub-tasks will vary depending on whether the LID practice's surface is vegetated or permeable pavement. Some sub-tasks in stage 3 will also vary depending on the LID type. For example, permeable pavements often require compaction of sub-surface storage layers. The following sections give a brief description of each over-arching stage, a list of sub-tasks for each stage, and links to the page dedicated to each main LID construction stage.
STEP has developed practice-specific construction inspection checklists for [[Inspection and Maintenance: Bioretention & Dry Swales|bioretention and dry swales]], [[Inspection and Maintenance: Permeable Pavement|permeable pavement]], [[Inspection and Maintenance: Enhanced Swales|enhanced swales]], [[Inspection and Maintenance: Vegetated Filter Strips|vegetated filter strips]], [[Inspection and Maintenance: Underground Infiltration Systems|underground infiltration systems (exfiltration systems, trenches, chambers, soakaways)]], [[Inspection and Maintenance: Green Roofs|green roofs]], and [[Inspection and Maintenance: Rainwater Harvesting|rainwater harvesting]].
[[Green roof|Green roofs]] and [[rainwater harvesting]] systems have specific construction sequences and requirements that differ from the main sequence described above. STEP has developed guidance for [[green roof construction]]; '''guidance on installing rainwater harvesting practices is forthcoming'''. When installing these BMP types, always consult the product manufacturer's guidance.
[[Green roof|Green roofs]] and [[rainwater harvesting]] systems have specific construction sequences and requirements that differ from the main sequence described above. STEP has developed guidance for [[green roof construction]]; '''guidance on installing rainwater harvesting practices is forthcoming'''. When installing these BMP types, always consult the product manufacturer's guidance.