The Infiltrator Quick4 series of septic chambers, including the Quick4 Standard, Quick4 Plus Standard, Quick4 Plus Standard Low Profile (LP), and Quick4 High Capacity chambers, are designed for use in individual subsurface sewage treatment systems. These chambers are approved for use in Minnesota in conformance with Minnesota Pollution Control Agency (MPCA) standards. This article details installation procedures, sizing considerations, and component specifications based on official Infiltrator Systems documentation. The systems require a design including a thorough site and soil evaluation, and the issuance of a local permit.
Chamber Specifications and Types
Infiltrator Systems offers several Quick4 chamber variations to accommodate different installation requirements. The Quick4 Equalizer 24 LP chamber is designed for shallow placement and can be installed in either an 18-inch or 24-inch-wide trench. The Quick4 Equalizer 36 chamber is installed in a 24-inch-wide trench and features advanced contouring capabilities. The Quick4 Plus Standard LP chamber is suitable for 36-inch-wide trenches and is 4 inches shorter than standard models, allowing for shallower installation. The Quick4 Plus Standard chamber also fits a 36-inch-wide trench and offers enhanced strength through a central structural column. The Quick4 Standard chamber is also designed for 36-inch-wide trenches and provides contouring capabilities with its Contour Swivel Connection.
Nominal chamber specifications are as follows:
- Quick4 Plus Standard LP: 34" x 48" x 8", Effective Length: 48", Invert Elevation: 0.6”, 3.3”, 7.3”, 9.0”
- Quick4 Plus Standard: 34" x 48" x 12", Effective Length: 48", Invert Elevation: 0.6”, 3.3”, 7.3”, 9.0”
System Sizing and Equivalency
Proper system sizing is crucial for optimal performance. For trench applications, chamber width is related to equivalent stone and pipe trench width. Specifically:
- A 16-inch-wide chamber is equivalent to an 18-inch-wide stone and pipe trench.
- A 22-inch-wide chamber is equivalent to a 24-inch-wide stone and pipe trench.
- A 34-inch-wide chamber is equivalent to a 36-inch-wide stone and pipe trench.
The 34-inch-wide Quick4 High Capacity chamber is eligible for a bottom area reduction under Section 7080.2210, Subpart 3(B).
For Classification I dwellings and Effluent Treatment Level C, sizing credits are as follows:
- Sizing Credit per Chamber: 12 SF or 3 SF/LF.
The documentation provides tables for determining the number of chambers and linear feet required based on soil loading rate and the number of bedrooms. Example data includes:
- Soil Loading Rate of 1.20: Requires 2184321284216852208 chambers for 5 bedrooms and 2345 linear feet.
- Soil Loading Rate of 0.78: Requires 32128481926526081324 chambers for 5 bedrooms and 1202184321284216852208 linear feet.
- Soil Loading Rate of 0.60: Requires 421686325284336105420 chambers for 5 bedrooms and 21686325284336105420 linear feet.
Installation Procedures
Installation must adhere to state and county regulations, and requires a design, site evaluation, and local permit. The following steps outline the general installation process:
- Site Preparation: Review the approved system design to determine the height of the seasonal high water table or other limiting factors. Calculate the number of sand lifts necessary.
- Materials and Equipment: Gather necessary materials, including Quick4 chambers and end caps, pressure lateral pipe and fittings, sand and specified fill material, plastic pipe straps (120 lb. tensile strength, nylon prohibited), a utility knife or hole saw, a backhoe/bulldozer/skid-steer, glue, a rake, 2" drywall screws (optional), a garden hose (optional), a chisel plow (optional), and paving blocks (optional).
- Header Pipe and Invert Height: Check that the header pipe is level or has the prescribed slope. Set the invert height as specified in the design from the bottom of the inlet.
- Chamber Placement: Place the first chamber in the trench.
- End Cap Connection: Place the back edge of the end cap over the inlet end of the first chamber, aligning the locking pins on the chamber and end cap. Insert the inlet pipe 2.5 inches into the opening on the front of the end cap.
- Subsequent Chamber Connection: Lift and place the end of the next chamber onto the previous chamber at a 45-degree angle, aligning the chamber end between the connector hook and locking pin. Lower the chamber to connect.
- Invert Adapter Installation: Drill the pre-marked area on the front of the Quick4 Invert Adapter with a hole saw. Insert the Quick4 Invert Adapter into the front of the end cap. Rotate the adapter to the desired angle and screw it into place. Insert a 4” Schedule 40 PVC pipe into the front of the adapter.
Construction Machinery Guidelines
Specific guidelines must be followed when using construction equipment:
- Avoid direct contact with chambers.
- Ensure a minimum of 12 inches of compacted cover to support a wheel load rating of 16,000 lbs/axle or equivalent to an H-10 AASHTO load rating.
- Drive across sand mounds only when necessary.
- Never drive wheeled machinery over chambers.
- Avoid stones larger than 3 inches in diameter in backfill. Remove any stones of this size that are in contact with chambers.
Component Details
The Quick4 Plus All-in-One Endcap and the Quick4 Plus Endcap are available for use with the Quick4 Plus Standard and Quick4 Plus Standard LP chambers, providing increased flexibility in system configurations. The MultiPort End Cap, found with the Quick4 Standard chamber, features eight molded-in high and low inlets for maximum piping flexibility.
Warranty and Liability
Infiltrator Systems Inc. provides a warranty covering defects in materials and performance failures. For claims, the buyer must notify Infiltrator Systems Inc. within thirty days of discovering the issue. Infiltrator Systems Inc. may perform tests to determine the cause of the failure. Valid claims will be addressed through redesign (if necessary), replacement units, material costs, and labor costs for installation by a contractor selected by Infiltrator Systems Inc. This warranty constitutes the buyer’s sole remedy for defective units and performance failures.
Infiltrator Systems Inc. is not liable for incidental, consequential, indirect, or special damages, including loss of production, profits, labor, materials, overhead costs, or claims from third parties. The buyer is solely responsible for ensuring the original installation complies with all applicable laws, codes, rules, and regulations.
Conclusion
The Infiltrator Quick4 chamber systems offer a range of options for subsurface sewage treatment. Proper installation, adhering to the guidelines provided, is critical for optimal performance and longevity. System sizing must be carefully calculated based on soil loading rates and dwelling size. The provided documentation emphasizes the importance of local regulations, permitting, and professional design for successful implementation.