Changes

==Overview==

==Overview==

[[Infiltration trenches]] (also referred to as ‘infiltration galleries’) are design variations that consist of linear, rectangular or trapezoidal shape, with a bottom generally between 0.6 and 2.4 m wide. Linear trench geometries will drain faster than round or square shapes due to their larger perimeters. These geotextile-lined excavation facilities should have a nearly level or gently sloping bottom grade to spread flow evenly. Similar to soakaways, they are also filled with [[stone]] or other void-forming structures. They are well suited to sites where available space for infiltration is limited to strips of land between buildings or properties, or along road right-of-ways.  

[[Infiltration trenches]] typically consist of linear, rectangular- or trapezoidal-shaped trench excavations between 0.6 and 2.4 m wide that are lined with geotextile, backfilled with clear stone aggregate and located underground. They are well suited to sites where available space for infiltration is limited to strips of land between buildings or properties, or along road right-of-ways.  

STEP has prepared life cycle costs estimates for each design configuration, based on a 2,000 m² road drainage area, runoff control target of 25 mm depth and 72 hour drainage period, for comparison which can be viewed below. To generate your own life cycle cost estimates customized to the development context, design criteria, and constraints applicable to your site, access the updated [https://sustainabletechnologies.ca/lid-lcct/ LID Life Cycle Costing Tool (LCCT) here].

STEP has prepared life cycle costs estimates for each design configuration, based on a 2,000 m² asphalt drainage area, runoff control target of 25 mm depth and 72 hour drainage period, for comparison which can be viewed below. To generate your own life cycle cost estimates customized to the development context, design criteria, and constraints applicable to your site, access the updated [https://sustainabletechnologies.ca/lid-lcct/ LID Life Cycle Costing Tool (LCCT) here].

==Design Assumptions==

==Design Assumptions==