Designed to meet the growing environmental demands for Sustainable & Low Impact Development
Pervious Concrete is a specialty concrete consisting of cement, recycled fly ash or slag, coarse aggregates, water, and other necessary components to produce sufficient paste and bonding ability to glue coarse aggregates together. This creates a highly permeable yet, structural system of interconnected voids that drains storm water quickly. Aggregate characteristics, paste content and proper placement methods will determine the available density or void content to produce infiltration rates sufficient to handle Pacific Northwest storm events.
Why is Pervious Concrete a Sustainable Solution?
- Eliminates runoff of untreated storm water
- Directly recharges groundwater
- Mitigates first flush pollution
- Protects streams, watersheds and ecosystems
- Mimics the drainage and filtration of natural soils and bioswales
- Provides drip line irrigation for Urban trees and landscaping
- Provides a higher albedo surface reflectivity index (0.35 or higher)
- Reduces surface temperatures; heat island effects
- Eliminates need for expensive collection and detention systems
Read more about pervious pavement at the Washington Aggregates & Concrete Association Website.
Certified Pervious Concrete Craftsman and Technicians
Three levels of certification are available through the NRMCA:
1. A Pervious Concrete Technician is a person who demonstrated knowledge about proper procedures to place, compact, finish, edge, joint, cure and protect pervious concrete pavements, but who lacks the requisite field experience to qualify as a pervious concrete Installer or Craftsman.
2. A Pervious Concrete Installer is a person who has demonstrated the ability to place, compact, finish, edge, joint, cure and protect pervious concrete pavements and has documented a limited project-based field experience in placing pervious concrete.
3. A Pervious Concrete Craftsman is a person who has demonstrated the ability to place, compact, finish, edge, joint, cure and protect pervious concrete pavements and has documented a higher level of field time-based experience in placing pervious concrete.
You can access the NRMCA database here. This allows you to search your state for certified members.
Global Contractors, LLC Certifications
Chuck Fain – Certified Craftsman
Chuck is the owner of Global Contractors, LLC and has been working in the construction field for 32 years.
Corey Viggue – Certified Craftsman
Cory has been an employee of Global Contractors, LLC for 14 years and currently is company superintendent.
Matthew Ward – Certified Craftsman
Matthew has been an employee of Global Contractors, LLC for 8 years and has worked in construction since 2002.