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Our nationwide team of experts is always available to work with our engineering clients, like you, either in person or over the phone. But when your schedule is packed - and you need an answer right away (like yesterday) - utilize our online design tools to get the information you need.

Our goal is to support our engineering clients throughout the entire permitting process. Keep going to see how it works...

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	Specifications & Details Once we have what we need – your local Contech design engineer will be provide you specifications and standard details. You can count on our team’s local regulatory experience and technical know-how to get you everthing you need to make the permitting process easier. Browse All Specs and Details >>



	Preliminary Design Our in-house design team can support you through the entire permitting process - and the first step sending us your project info. Check out our design tools below. Or fill out a solutions assessment worksheet (SAW). Solutions Assessment Worksheet (.doc) Solutions Assessment Worksheet (.pdf)



	Submittal Package After permits are approved and the project is ready to go out to bid, our team works with contractors to provide the necessary submittal package and quote. Request a Quote >>



	Bridges & Structures Product Design Worksheets Product Design Worksheet- Pedestrian Truss Product Design Worksheet- Pedestrian Truss Product Design Worksheet- Precast Bridge Product Design Worksheet- Precast Bridge Product Design Worksheet- Vehicular Truss Product Design Worksheet- Vehicular Truss Input your specs and requirements into our DYOB system, and we'll send you a schematic of your bridge within an hour. DYO Precast DYO Plate DYO Truss Design Tool Quick Links Hydraulic Tools Ver 4.0 (.exe) HY-8 Culvert Analysis from the Federal Highway Administration HEC-RAS - from the Army Corps of Engineers



	Pipe Product Design Worksheets Product Design Worksheet- Pipe Product Design Worksheet- Pipe Hydraulics Manning's "n" Value for Corrugated Metal Pipe (CMP) Height of Cover Tables CMP: 2-2/3" x 1/2" Aluminum 2-2/3" x 1/2" Steel 3" x 1" Aluminum 3" x 1" Steel 5" x 1" or 3" x 1" Steel ULTRA FLO PVC: A-2000 Calculators Slotted Drain Design Calculator A2 Liner Sliplining Drainage Calculator



	Stormwater Management Fill out our convenient form and we'll contact you within 48 hours with your stormwater management solution. Product Design Worksheets Stormwater Treatment Product Design Worksheet Stormwater Treatment Product Design Worksheet Stormwater Detention / Infiltration Product Design Worksheet - EAST Stormwater Detention / Infiltration Product Design Worksheet - EAST Stormwater Detention / Infiltration Product Design Worksheet - WEST Stormwater Detention / Infiltration Product Design Worksheet - WEST Rainwater Harvesting Product Design Worksheet Rainwater Harvesting Product Design Worksheet Other Stormwater Tool Quick Links UrbanGreen™ BioFilter Plant Finder UrbanGreenTM Rainwater Harvesting Runoff Reduction CalculatorTM



	Erosion Control Product Design Worksheets Product Design Worksheet- Armortec Product Design Worksheet- Armortec Armortec Hard Armor Design Software - temporarily unavailable to access via the website. Please email info@contech-cpi.com your contact information and mailing address. A copy will be mailed to you. Request Armortec Software



	Land Value Calculator Stormwater Management Cost Comparison Analysis Why build above when you can go below? If your land has limited space, our underground stormwater management systems may be right for you. Use our Land Value Calculator to determine savings you will realize by bringing stormwater management underground. Start calculating your land value >>

Start a Project >>

Designing a New Project?

Specifications & Details

Preliminary Design

Submittal Package

Bridges & Structures

Pipe

Stormwater Management

Erosion Control

Land Value Calculator

Stormwater Management Cost Comparison Analysis