Difference between revisions of "Construction"

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STEP divides the construction process for LID practices into five over-arching stages:   
STEP divides the construction process for LID practices into five over-arching stages:   
#[[Pre-construction|pre-construction]]
#[[Pre-construction]]
#Excavation and grading
#[[Excavation and grading]]
#Backfill granular, utilities, and pipes
#Backfill granular, utilities, and pipes
#Finishing grades: inlet, outlet, and surface layer
#Finishing grades: inlet, outlet, and surface layer

Revision as of 19:10, 2 August 2022

Overview[edit]

  • Importance of construction inspections
  • Contractor familiarity
  • What you can expect from STEP guidance: practical advice, specific to LID, practical advice on how to ensure successful construction

Construction stages[edit]

STEP divides the construction process for LID practices into five over-arching stages:

  1. Pre-construction
  2. Excavation and grading
  3. Backfill granular, utilities, and pipes
  4. Finishing grades: inlet, outlet, and surface layer
  5. Post-construction

Stages 1-3 and 5 of the LID construction process are fundamentally similar for all surface-level LID types. To illustrate, STEP's recommended processes for excavation do not differ depending on the practice type. Excavation is excavation, whether it is for a bioretention garden or a permeable paver parking lot. On the other hand, stage 4 sub-tasks will vary substantially from practice to practice, as do some sub-tasks in stage 3. The following paragraphs give a brief explanation of each over-arching stage.

Pre-construction[edit]

Pre-construction activities set the stage for the successful construction of an LID practice. The pre-construction page gives guidance on:

  • design verification and site walk-through
  • LID construction notes
  • tendering and contract
  • communication, inspection plan, and utilities coordination
  • Erosion and sediment control measures
  • mobilization, access, staging, and perimeter controls

Excavation and grading[edit]

Excavation and grading are necessary for installing LID practices with sub-surface components, re-grading land to hold more water, and re-routing overland flow routes into the LID practice in question. The excavation and grading page gives guidance on:

  • clearing and grubbing
  • excavation and rough grade
  • final excavated grade and verification

Backfill granular, utilities, and pipes[edit]

Many LID practices rely on sub-surface features--storage reservoirs, liners, underdrains, etc.--to function. The backfill granular, utilities, and pipes / sub-surface components page gives guidance on:

  • geotextile (if applicable)
  • underdrain
  • impermeable liners
  • overflow
  • monitoring wells
  • storage reservoir
  • stone choker layer
  • curbing
  • pre-treatment and inlet

Finishing grades and surface layer installation[edit]

  • soil media installation and soil amendment
  • finish grading
  • large stone and riprap
  • plant verification and installation
  • mulch placement
  • stabilizing contributing drainage area and planting adjacent vegetation
  • as-built survey

Post-construction[edit]

If you assume the works too early, u make and ass out of me.

LID practice pages[edit]

Each construction page listed below :)

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