Statement of Work 100T Gooseneck Trailer.docx

Statement of Work (SOW): Heavy-Haul Trailer Procurement

1. Scope of Work The Contractor shall supply and deliver one (1) new, unused 100-Ton Removable Gooseneck Semi-Trailer engineered for extreme-capacity industrial, mining, and heavy construction equipment transport. The trailer must feature custom width-extension outriggers and a compliant multi-axle layout matching MnDOT Heavy Haul permitting guidelines for Superloads. [1]

2. Technical Specifications Structural Design & Capacity

· Load Capacity: 100 Tons (200,000 lbs) minimum continuous payload rating.

· Base Dimensions: 48 feet total length; baseline width of 10 feet (120 inches) to provide increased deck width and support for wide-track heavy equipment.

· Frame Construction: High-strength, low-alloy steel main beams (minimum 100,000 psi yield strength). [1] Custom Outrigger Extensions [1]

· Extension Mechanisms: Heavy-duty, swing-out, steel outrigger brackets integrated directly into both sides of the main deck.

· Extended Capability: Must support a minimum 18-inch extension per side to accommodate wide-track or over-width equipment up to 13 feet (156 inches) total width, to accommodate wide-track and over-width heavy equipment.

· Safety Integration: Outriggers must include locking pins, heavy-duty outrigger boards (Apitong or equivalent), and dedicated permanent mounting brackets for wide-load flags and strobe warning systems to support applicable oversize-load safety requirements.

Gooseneck & Loading System [1]

· Neck Type: Hydraulic Removable Gooseneck (RGN) with self-lifting ram-foot design.

· Power Source: Dual-source operation utilizing a 16 HP gas engine pony motor or tractor wet-line system.

· Loading Method: Ground-level front loading to allow safe, self-propelled tracking of heavy tracked equipment.

MnDOT-Compliant Running Gear & Axle Configurations

· Axle Layout: The configuration must be engineered to satisfy MnDOT's bridge formula and weight tables for a 100-ton gross combination payload.

· Axle Assemblies: Minimum Quad-axle rear assembly (with 14-foot or less overall group spacing) or Spread-Quad setup (14-foot 1-inch or greater) capable of handling up to 80,000 lbs per single-trip permit axle-group allowance.

· Booster / Flip Axle Provisions: Pre-engineered frame brackets and hydraulic/air connections to accept a 4th or 5th pin-on flip axle or nitro-booster to distribute extreme weight across more axles as dictated by MnDOT Superload rules.

· Brakes & Tires: ABS air brake system on all hubs. Tires must be rated to comfortably sustain loads without exceeding MnDOT’s maximum tire-weight limit of 500 lbs per inch of tire width for non-steering axles.

· Suspension: Heavy-duty air ride suspension with manual and automatic height/dump valves. [1, 2, 3]

3. Quality Assurance & Inspection

· Pre-Delivery Inspection (PDI): The supplier must physically inspect all weld points, structural integrity, and outrigger lock tolerances before shipment.

· System Testing: Complete operational stress testing must be performed on the hydraulic neck mechanism, outrigger extensions under load, and air brake pressure lines.

4. Deliverables & Documentation

· Manuals: Complete manufacturer operation manuals, hydraulic schematics, and structural load charts.

· Certificates: Manufacturer’s Statement of Origin (MSO), federal DOT certification labels, and component warranty documentation.