The CleanSpace Network

About the CleanSpace® Crawl Space Repair Network

The world's largest network of crawl space moisture control and structural repair experts, serving the United States and Canada

the CleanSpace® Network headquarters

Aerial view of the Basement Systems and Cleanspace International Headquarters -- a 92,000 square foot facility located in Seymour, CT.

The CleanSpace® Crawl Space Contractor Network is a division of Basement Systems, Inc. -- the largest network of basement and crawl space contractors worldwide. Basement Systems was founded in 1987, and consists of a network of more than 300 dealerships.

The CleanSpace® division has been in operation since 2001, and serves in nearly every part of the United States and Canada. CleanSpace® dealers are local, independently owned and operated companies that are united under the common goal of creating drier, healthier, and more energy efficient crawl spaces. We are not a franchise!

Each CleanSpace® dealer works with the network cooperatively, sharing knowledge, experiences, and best practices with one another. We also employ a full-time Research and Development Department tasked with keeping us on the cutting edge.

Clean CrawlSpace Inc. is the local CleanSpace® Dealer in San Francisco, San Jose, Fremont, and the surrounding areas in California. Call us today at 1-855-410-0663 or contact us online to get a free estimate on crawl space repair and encapsulation for your home.

Contractors You Can Count On

Our crawl space contractor convention

Each year, Basement Systems hosts an Annual Convention, which is a week-long gathering that includes trainings, product unveilings, and dealer awards.

Not just anyone can become a member of our network! We carefully hand-pick our dealerships from well-established, accomplished companies that are stable and reputable within their local area. Our dealers are experts in the industry, specializing in crawl space repair and moisture control as a core function of their business. These are specialists who work exclusively in crawl spaces every day!

The Better Business Bureau has recognized us several times for our accomplishments. Among others, Basement Systems has been awarded the BBB Marketplace Ethics Award multiple times, the BBB Consumer Education Award multiple times, and the BBB Quality Award.

Dealer Support & Training

As members of the CleanSpace® Network, dealers also benefit from year-round training sessions provided at the headquarters, free of charge. These trainings focus on every aspect of the business, including customer service, sales, installation, system maintenance, and much more.

Dealers also take our in-house Certification Testing upon the completion of each training. Along with our full-time Research And Development Department and Training Team, the headquarters also maintains a fully staffed Dealer Support Department.

This is a team of highly qualified industry experts, who are standing by every day to provide expert advice on unique challenges that our dealers face as they work in crawl spaces all over North America.

More Than 50 Exclusive Crawl Space Products

No matter what you need for your crawl space, we have a product that's custom-designed just for you! We've been awarded more than 30 patents for our innovative products, and have won more than 40 quality and innovation awards!

These products have been successfully used to meet the needs of homeowners with crawl spaces in hundreds of thousands of homes worldwide, including repairs and upgrades for crawl spaces.

Our crawl space products serve the following needs for homeowners:

Determination of Capacity

The ultimate capacity of a helical anchor may be calculated using the traditional bearing capacity equation:

Qu = ∑ [Ah (cNc + qNq)]

Where:
Qu = Ultimate Anchor Capacity (lb)
Ah = Area of Individual Helix Plate (ft2)
c = Effective Soil Cohesion (lb/ft2)
Nc = Dimensionless Bearing Capacity Factor = 9
q = Effective Vertical Overburden Pressure (lb/ft2)
Nq = Dimensionless Bearing Capacity Factor

Total stress parameters should be used for short-term and transient load applications and effective stress parameters should be used for long-term, permanent load applications. A factor of safety of 2 is typically used to determine the allowable soil bearing capacity, especially if torque is monitored during the helical anchor installation.

Helical Anchor Tech

Like other deep foundation alternatives, there are many factors to be considered in designing a helical anchor foundation. Supportworks recommends that helical anchor design be completed by an experienced geotechnical engineer or other qualified professional.

Another well-documented and accepted method for estimating helical anchor capacity is by correlation to installation torque. In simple terms, the torsional resistance generated during helical anchor installation is a measure of soil shear strength and can be related to the bearing capacity of the anchor.

Qu = KT

Where:
Qu = Ultimate anchor Capacity (lb)
K = Capacity to Torque Ratio (ft-1)
T = Installation Torque (ft-lb)

The capacity to torque ratio is not a constant and varies with soil conditions and the size of the anchor shaft. Load testing using the proposed helical anchor and helix blade configuration is the best way to determine project-specific K-values. However, ICC-ES AC358 provides default K-values for varying anchor shaft sizes, which may be used conservatively for most soil conditions. The default value for the Model 150 Helical Anchor System (1.50" square shaft) is K = 10 ft-1.

-- View Our Helical Anchors and Tiebacks Product Specifications document --

Anchor Capacity

The cross-section of a square shaft is very compact which can allow the anchor to penetrate more easily through the soil. This compact shape also reduces the stiffness of the cross section and introduces more potential for buckling. These two factors make square shaft helical anchors better suited for tension loads. Supportworks, Inc. therefore recommends their use mainly for these types of applications. Square shaft helical anchors (piles) used in compression should be evaluated on a case by case basis by the project engineer.

Mechanical Axial Capacity (see note):

  • Allowable Tension = 26.5 kips*

* The mechanical tensile capacity of the Model 150 Helical Anchor System is limited by the allowable stress levels dictated by AISC for a high strength bolt in double shear. The allowable tensile capacity of the shaft is actually much higher than this Allowable Tension value.

Torque Limited Axial Design Capacities based on Ultimate Torsional
Resistance of Anchor Shaft = 6,340 ft-lbs**:

  • Ultimate Soil Capacity = 63.4 kips** (with K = 10 ft-1, see note)
  • Allowable Soil Capacity = 31.7 kips (FOS = 2, Allowable System Capacity therefore governed by mechanical capacity = 26.5 kips*)

** This Ultimate Torsional Resistance and its corresponding Torque Limited Capacities are based on laboratory test results from an IAS accredited facility and may only be approached in idealized conditions. Plastic torsional deformations can begin in the anchor shaft near 4,600 ft-lbs. This value may be reached and exceeded in the field by maintaining alignment between the anchor and the drive head, limiting impact forces and torque reversal, and reducing the tendency to "crowd" (push down on) the anchor. Installation through soils with obstructions or high variability may result in impact loading on the anchor. In these cases, achieving high torque values becomes more difficult and a further reduction in the Design Torque Limit may be appropriate.

Note

K = 10 ft-1 is a default value as published in ICC-ES AC358 which can, in many cases, be considered conservative. Higher capacities can often be achieved with site-specific load testing. Allowable capacities based on site testing shall not exceed the Mechanical Axial Capacity.

-- View Our Helical Anchors and Tiebacks Product Specifications document --

Model 150 Helical Anchor System

  • Outer Dimensions = 1.50" x 1.50"
  • Anchor Shaft Yield Strength = 90 ksi (min.)
  • Coupling Hardware: ¾" Grade 8 Bolt with Nut
  • Available Helix Blade Diameters = 6", 8", 10", 12" and 14"
  • Helix Blade Thickness = 0.375"
  • Termination Hardware: 1" Threaded Rod, Tensile Strength = 120 ksi (min.)

-- View Our Helical Anchors and Tiebacks Product Specifications document --

Model 175 Helical Anchor System

  • Outer Dimensions = 1.75" Round Corner Square Bar
  • Anchor Shaft Yield Strength = 90 ksi (min.)
  • Coupling Hardware: (2) ¾" Grade 8 Bolt with Nut
  • Available Helix Blade Diameters = 6", 8", 10", 12" and 14"
  • Helix Blade Thickness = 0.375"
  • Termination Hardware: 1" Threaded Rod, Tensile Strength = 120 ksi (min.)

-- View Our Helical Anchors and Tiebacks Product Specifications document --

Free Crawl Space Repair & Upgrade Estimates

CleanSpace® logo

Each member of the CleanSpace® Network provides homeowners in their service area with free written quotes for all repairs and upgrades for their crawl space.

Each quote includes a professional, on-site inspection and measurement of your crawl space. We'll answer any questions you have, and map out your crawl space using our innovative crawl space software program. Your specialist will take you shopping through our products, making recommendations on which options would work best for your scenario.

As an added courtesy, your local dealer will also mail along a full-color copy of our crawl space book: Crawl Space Science. This provides you with a powerful research tool -- one that is filled with photos and information about crawl spaces, as well as details about our products and services.

Don't wait to create a healthier, more valuable home! Contact us today!

Looking for a price? Get a no cost, no obligation free estimate.

our service area

We serve the following areas

Our Locations:

Clean CrawlSpace Inc.
3100 Dutton Ave. Ste. 142E
Santa Rosa, CA 95407
1-707-706-6677


Clean CrawlSpace Inc.
765 E Brokaw Rd
San Jose, CA 95112
1-408-650-8110
Service Area
Free Estimate