While property owners often confuse the two, a Perc Test and a Geotechnical Report serve entirely different purposes and cannot be used interchangeably for structural work.
### Perc Test (Percolation Test)
- Primary Purpose: Used solely for septic system design.
- Key Data: It measures the soil’s absorption rate in minutes per inch to determine the size of a leach field.
- Structural Relevance: It provides no data on whether soil can support a building. Building departments will not accept a perc test for foundation permits.
- Typical Cost: $100 – $300 per test hole.
### Geotechnical Report
- Primary Purpose: Evaluates soil bearing capacity for structural foundation design and repair.
- Key Data: Provides comprehensive technical details including soil type classification, density, groundwater depth, shear strength, and shrink/swell potential.
- Structural Relevance: Essential for calculating foundation dimensions and determining the depth and spacing of helical piers.
- Typical Cost: $800 – $3,500 depending on the project scope and site access.
In the Denver metro area, geotechnical reports must be prepared by a licensed geotechnical engineer and follow ASTM standards to ensure the long-term stability of the structure.
Related FAQs
-
How do I Find an Honest and Reliable Contractor for a Home Renovation?
Read More »: How do I Find an Honest and Reliable Contractor for a Home Renovation?Finding a reliable contractor for your home renovation requires verifying their professional credentials and understanding their project management style. To ensure you are hiring an honest and qualified professional in the Denver and Centennial area, follow these guidelines: Check Industry…
-
Are There Tax Credits for Energy-efficient Home Renovations in Denver?
Read More »: Are There Tax Credits for Energy-efficient Home Renovations in Denver?Yes, there are several financial incentives and tax credits available for homeowners performing energy-efficient renovations in Denver and the surrounding Front Range areas. Specific opportunities include: City Tax Credits: Denver offers specific city tax credits for the installation of solar…
-
What are the Best Eco-friendly Flooring Options for a Colorado Remodel?
Read More »: What are the Best Eco-friendly Flooring Options for a Colorado Remodel?For homeowners planning a sustainable remodel in Colorado, particularly in the Centennial and Denver areas, there are several eco-friendly flooring and material options that balance durability with environmental responsibility. According to the provided guide, the best eco-friendly flooring and surface…
-
What are the Most Energy-efficient Remodeling Upgrades for Denver Homes?
Read More »: What are the Most Energy-efficient Remodeling Upgrades for Denver Homes?For homeowners in Denver and the surrounding Front Range areas, several energy-efficient remodeling upgrades are recommended to improve comfort and reduce utility costs. These upgrades are designed to address Colorado’s unique climate, characterized by cold winters and semi-arid conditions. Key…
-
Where can I Find Locally Sourced Construction Materials in Colorado?
Read More »: Where can I Find Locally Sourced Construction Materials in Colorado?In Colorado, the availability of locally sourced and sustainable construction materials varies by city. Homeowners can find these materials through several channels across the Front Range: Centennial: This area has high access to eco-friendly materials. You can find multiple local…
