The SitePro 27-4852-16 Heavy Duty Column Clamp is the go-to mounting solution for surveyors and layout crews who need a stable instrument station where a tripod simply won't work. Engineered for demanding commercial and industrial jobsites, this heavy-duty clamp secures directly to structural steel columns, concrete pillars, wood posts, and I-beams — turning any vertical support into a reliable platform for your total station, optical level, or laser level.
Column Clamp Overview & Jobsite Applications
When floor space is congested, slab edges are out of reach, or overhead obstructions make tripod setup impossible, the 27-4852-16 delivers a fast, rigid alternative. The included 2-inch by 10-foot heavy-duty nylon strap wraps around virtually any column profile, while the integrated clamping hardware locks down tight without marring finished surfaces. A standard 5/8-inch x 11 TPI threaded mounting post accepts nearly every professional survey instrument on the market. Vertical height adjustment and full 360-degree rotational positioning let you dial in the exact setup your layout requires — all without moving the mount.
Key Specifications
- Model: SitePro 27-4852-16
- Thread: 5/8 inch x 11 TPI (industry standard)
- Strap: 2 inch wide x 10 foot heavy-duty nylon
- Adjustment: Vertical slide & 360° rotational
- Compatible Instruments: Total stations, optical levels, laser levels, theodolites
- Column Compatibility: Round, square, rectangular steel, concrete, and wood
- Construction: Heavy-gauge steel with corrosion-resistant finish
- Rated for: Professional-grade total stations and rotating laser levels
Key Features
- Universal 5/8x11 thread — compatible with Leica, Trimble, Topcon, Spectra, and most major instrument brands
- Heavy-duty strap system — 2"x10' nylon strap handles wide-flange beams, round columns, and timber posts
- Dual adjustment — independent vertical height positioning and full rotational swing for precise instrument placement
- Industrial-grade clamp hardware — high-torque fasteners hold firm under vibration and jobsite movement
- Compact footprint — ideal for confined spaces, active work floors, and elevated steel erection decks
- Fast deployment — strap-and-clamp design sets up in minutes without tools beyond a standard wrench
Job Applications
High-Rise & Steel Erection: Mount your total station directly to a structural column on an active erection deck where tripod legs would create a tripping hazard or simply have no flat surface to rest on.
Concrete & Tilt-Up Construction: Clamp to existing concrete pillars or shear walls to maintain a fixed instrument station while crews pour adjacent slabs — no need to re-setup after every pour.
Interior Layout & MEP Coordination: Attach a rotating laser level to a column in a mechanical room or open bay to project reference lines across an entire floor plate without occupying valuable floor space.
Bridge & Infrastructure Work: Secure instruments to bridge piers, abutment faces, or falsework posts in environments where unstable ground or water proximity makes tripod use impractical.
Compatible Accessories
- SitePro Mini Tripod & Accessories
- SitePro Universal Tribrach Adapter
- Spectra Precision Rotating Laser Levels
- Leica Total Station Accessories
- Survey Instrument Carrying Cases & Protection
Related Guides
- How to Set Up a Column Clamp on Structural Steel
- Choosing the Right Instrument Mount for Your Jobsite
- Total Station Accessories Buying Guide
- Laser Level Setup Tips for Commercial Construction
Frequently Asked Questions
- What instruments are compatible with the SitePro 27-4852-16?
- Any instrument with a standard 5/8-inch x 11 TPI threaded base is compatible, including total stations, optical levels, theodolites, and rotating laser levels from brands like Leica, Trimble, Topcon, Spectra Precision, and Sokkia.
- What column sizes and shapes will the strap accommodate?
- The included 2-inch x 10-foot heavy-duty nylon strap is long enough to wrap around most standard structural columns, including wide-flange steel sections, round HSS tubes, square timber posts, and concrete pillars. The extra strap length handles large-diameter columns common in industrial and bridge construction.
- Does the clamp damage column surfaces or coatings?
- The strap distributes clamping force across a wide area, reducing point loads on column surfaces. For sensitive coatings or finished surfaces, placing a protective layer between the strap and the column is recommended. The clamp hardware itself does not require drilling or permanent attachment.
- Is the 27-4852-16 rated for heavy total stations?
- Yes. The 27-4852-16 is built with heavy-gauge steel construction and high-torque clamping hardware specifically rated to support professional total stations and other heavy survey instruments. Always ensure the strap is fully tightened and the column is structurally sound before mounting any instrument.
Frequently Asked Questions
What instruments are compatible with the SitePro 27-4852-16?
Any instrument with a standard 5/8-inch x 11 TPI threaded base is compatible, including total stations, optical levels, theodolites, and rotating laser levels from brands like Leica, Trimble, Topcon, Spectra Precision, and Sokkia.
What column sizes and shapes will the strap accommodate?
The included 2-inch x 10-foot heavy-duty nylon strap is long enough to wrap around most standard structural columns, including wide-flange steel sections, round HSS tubes, square timber posts, and concrete pillars. The extra strap length handles large-diameter columns common in industrial and bridge construction.
Does the clamp damage column surfaces or coatings?
The strap distributes clamping force across a wide area, reducing point loads on column surfaces. For sensitive coatings or finished surfaces, placing a protective layer between the strap and the column is recommended. The clamp hardware itself does not require drilling or permanent attachment.
Is the 27-4852-16 rated for heavy total stations?
Yes. The 27-4852-16 is built with heavy-gauge steel construction and high-torque clamping hardware specifically rated to support professional total stations and other heavy survey instruments. Always ensure the strap is fully tightened and the column is structurally sound before mounting any instrument.