UNSPSC 31163400: Metal nets and screening structures

Assorted nets, baskets and other structures made of wire usually for safety and use at construction sites.

UNSPSC 31163400 Metal nets and screening structures is a Class code, but the recent state and local opportunities posted under it diverge sharply from the nominal scope. The code sees substantial activity in aggregate and stone materials procurement—rip rap, crushed stone, granite rubble, decomposed granite, and flexible base—rather than metal screening or netting products. State and local buying under this code encompasses purchase and delivery contracts for construction aggregates and erosion control stone, as well as construction projects that incorporate riprap placement as a key scope element. Cities, counties, and special-purpose districts (water utilities, parks departments, departments of transportation) are the primary issuing bodies, with repeat buyers including the City of Wichita (Kansas), Dane County (Wisconsin), and Boulder County (Colorado). Geographic activity spans from Texas and Florida to Colorado, Wisconsin, and the Pacific Coast, with particularly active recent solicitations in the Southwest and Upper Midwest.

Representative recent opportunities include the City of Wichita RFB for rip rap materials (18-inch, 24-inch, and 5 x 9 stone) for the Wichita-Valley Center Flood Control Project, with responses due July 10, 2026; the City of Huntsville, Texas solicitation for road materials including rip rap and stone aggregates (estimated annual spend $100,000) with responses due June 25, 2026; and Dane County, Wisconsin's RFB 2026-RFB-002 for crushed stone and gravel across multiple categories, due February 23, 2026. Boulder County has posted multiple bids for aggregate supply and riprap installation in bridge repair and chip seal projects (due dates ranging from April 2 to June 17, 2026). Construction projects incorporating riprap placement—such as Boulder County's scour critical bridge repair (Engineer's Estimate $295,205 for both bridges combined), Dallas County's Mohawk Erosion Control project ($588,900), and the Maryland Environmental Service's landfill cell construction—also carry the code. The majority of recent activity shows straightforward material supply and delivery contracts with fixed pricing models, annual or multiyear terms, and evaluation based on cost, quality, proximity, and past performance. Set-asides and local preferences vary by jurisdiction; Dane County explicitly excludes local vendor preference for sand and gravel, while San Bernardino County applies a 5 percent local preference. Most contracts require proof of insurance, compliance with relevant transportation specifications (Caltrans, TxDOT, CDOT, FDOT, or state highway standards), and timely delivery capability.