Stormwater Planter Concept Design
Budget: $250 – $750 USD
I need a set of clear, build-ready conceptual designs that show how flow-through planters, tree wells, and small rain gardens can be integrated into an urban streetscape in Philadelphia to meet the City’s stormwater management requirements.
Scope
• Translate my base CAD/PDF site plan into three coordinated concepts—one for each element—illustrating plan view, one or two key sections, and a simple planting palette that favours native species.
• Size each facility for the 1.5-inch design storm and note overflow routing, underdrain options, and required clearances from sidewalks, utilities, and building fronts.
• Reference the current Philadelphia Water Department Stormwater Management Guidance Manual so the concepts can move straight into permitting with minimal revision.
• Provide a brief narrative (one page each) that explains the design intent, assumed soil rates, and any maintenance considerations.
• Include a high-level cost opinion for each concept so I can compare them quickly during stakeholder review.
Format & Tools
PDF sheets (11×17 preferred) are fine for delivery; native files in AutoCAD or Civil 3D will help me advance the drawings later. Feel free to use SketchUp, Revit, or hand-drawn linework—clarity is more important than flashy rendering.
Timeline
A first draft within 10 days of award, final revisions finished one week later.
Acceptance
Designs must:
1. Demonstrate runoff capture to the target depth.
2. Follow PWD material and setback guidelines.
3. Be legible to contractors unfamiliar with green infrastructure.
If you’ve completed similar GSI work or understand Philadelphia’s permitting path, that experience will help move this quickly to construction documents.
Scope
• Translate my base CAD/PDF site plan into three coordinated concepts—one for each element—illustrating plan view, one or two key sections, and a simple planting palette that favours native species.
• Size each facility for the 1.5-inch design storm and note overflow routing, underdrain options, and required clearances from sidewalks, utilities, and building fronts.
• Reference the current Philadelphia Water Department Stormwater Management Guidance Manual so the concepts can move straight into permitting with minimal revision.
• Provide a brief narrative (one page each) that explains the design intent, assumed soil rates, and any maintenance considerations.
• Include a high-level cost opinion for each concept so I can compare them quickly during stakeholder review.
Format & Tools
PDF sheets (11×17 preferred) are fine for delivery; native files in AutoCAD or Civil 3D will help me advance the drawings later. Feel free to use SketchUp, Revit, or hand-drawn linework—clarity is more important than flashy rendering.
Timeline
A first draft within 10 days of award, final revisions finished one week later.
Acceptance
Designs must:
1. Demonstrate runoff capture to the target depth.
2. Follow PWD material and setback guidelines.
3. Be legible to contractors unfamiliar with green infrastructure.
If you’ve completed similar GSI work or understand Philadelphia’s permitting path, that experience will help move this quickly to construction documents.