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Overview
The Spectra Precision 1017 Manhole Mount is a precision-engineered support accessory designed for contractors who demand accurate, stable laser alignment in underground pipe installation projects. This universal manhole adapter mounts securely to the interior walls of sanitary sewers, storm drains, and water utility manholes, positioning pipe lasers directly above the pipe invert for optimal grade control. Constructed from heavy-duty materials with adjustable sizing capabilities, the 1017 accommodates manholes from 48 to 72 inches in diameter. The mount features a standard 5/8 x 11 threaded adapter that accepts all major pipe laser brands including Spectra, Topcon, Leica, and Trimble. Its compact folding design enables easy transport and storage while maintaining rigid stability during operation, even in wet conditions or high-flow environments where traditional tripod setups would be impractical or impossible.
Key Specifications
- Manhole Diameter Range: 48" to 72" (adjustable)
- Mounting Thread: Standard 5/8" x 11 TPI
- Construction Material: Heavy-duty steel with corrosion-resistant coating
- Weight: 18 lbs (8.2 kg)
- Height Adjustment: Variable positioning above invert
- Leg Design: Three-point contact with rubber-padded feet
- Folded Dimensions: 52" x 8" x 6" for transport
- Load Capacity: Up to 25 lbs (supports all standard pipe lasers)
- Compatibility: Universal fit for Spectra, Topcon, Leica, Trimble, and other major brands
What's in the Kit
- Spectra Precision 1017 Manhole Mount (adjustable frame assembly)
- 5/8" x 11 threaded laser mounting adapter
- Three adjustable leg extensions with locking mechanisms
- Rubber-padded contact feet (set of 3)
- Center column with height adjustment knob
- Leveling platform with bubble vial
- Heavy-duty carry bag with shoulder strap
- Quick-start instruction guide and safety documentation
Job Applications
- Sanitary Sewer Line Installation: Positions laser above the invert in deep manholes where tripods can't reach, eliminating the need for dangerous ladder work while maintaining laser alignment throughout the grade run.
- Storm Drain Construction: Provides stable laser mounting in high-flow conditions where water in the manhole would make floor-based tripods unstable or submerged, keeping critical alignment equipment safe and dry.
- Water Main Replacement: Enables precise grade control in confined manhole spaces where crews need maximum floor room for pipe handling, jacking equipment, and worker movement without obstructing the laser setup.
- Culvert Rehabilitation: Allows laser positioning in existing structures with irregular or damaged floors where traditional tripod legs cannot achieve stable three-point contact or level positioning.
- Tunneling and Microtunneling: Supports accurate alignment in launch shafts and access pits where wall-mounted lasers provide superior sightlines compared to floor-level instruments that may be blocked by equipment.
- Force Main Installation: Facilitates grade checking in wet wells and pump stations where standing water, debris, or limited access makes conventional laser mounting methods impractical or unsafe.
Compatible Accessories
- Spectra Precision Pipe Lasers (LP30 Series, DG711, DG811)
- Topcon Pipe Lasers (TP-L4 Series, TP-L5 Series)
- Pipe Laser Targets and Machine Receivers
- Laser Detector Clamps and Rod-Mounted Receivers
- Grade Rods and Invert Measuring Tools
- Standard Laser Tripods and Elevator Tripods
- Protective Carrying Cases for Pipe Lasers
Related Guides
- Complete Guide to Pipe Laser Setup and Calibration
- Manhole Safety: Best Practices for Underground Construction
- How to Choose the Right Pipe Laser Mounting Equipment
- Grade Control Techniques for Sewer and Storm Drain Installation
FAQ
- Will the Spectra 1017 Manhole Mount work with my existing pipe laser?
- Yes, the 1017 features a standard 5/8" x 11 threaded adapter that is compatible with all major pipe laser brands including Spectra Precision, Topcon, Leica, Trimble, and others. If your laser currently mounts to a standard tripod, it will work with this manhole mount. The universal threading ensures cross-brand compatibility across the industry.
- What is the minimum and maximum manhole diameter this mount can accommodate?
- The Spectra 1017 Manhole Mount adjusts to fit manholes ranging from 48 inches to 72 inches in diameter. The three adjustable legs extend and lock at various positions to achieve secure wall contact. For manholes outside this range, alternative mounting solutions or custom adapters may be required.
- How do I ensure the mount is level before starting my grade work?
- The 1017 includes a leveling platform with an integrated bubble vial at the laser mounting surface. After securing the three legs against the manhole walls, use the center column's height adjustment knob to fine-tune the level. For critical applications, verify level status using your pipe laser's built-in leveling system or a precision torpedo level before beginning grade work.
- Can this mount be used in wet conditions or active flow situations?
- Absolutely. The 1017 is specifically designed for wet manhole environments where floor-based tripods would be submerged or unstable. The wall-mounted design keeps your laser elevated above water, debris, and active flow conditions. The corrosion-resistant coating protects against moisture, and the rubber-padded feet maintain secure contact even on wet manhole walls. Always follow confined space safety protocols when working in manholes.
