Laconia Civicplus #26-10-23p

Flowable grout and placement services for the City of Laconia Public Works Building

The City of Laconia is seeking a contractor to fill a subsurface void beneath its Public Works Building with approximately 275 cubic yards of cementitious flowable grout. - Government buyer: City of Laconia, New Hampshire — Purchasing Office and Department of Public Works. - Project: Pump grout into an approximately 195-by-50-foot area beneath the building, where the average void height is about 16 inches. The 275-cubic-yard quantity is an estimate for bidding; payment is based on the accepted quantity actually placed, and bidders must verify site conditions. - Material requirements: Grout must be high-flow, pumpable, self-leveling, self-consolidating, non-metallic, chloride-free, bleed-free, non-segregating, and non-shrink or shrinkage-compensating. It must meet ASTM C1107/C1107M; proposed shrinkage-compensating or expansive grout requires ASTM C827/C827M test results. Product and mix documentation must cover technical and safety data, installation, flow, compressive strength, placement, and curing. - Work included: Furnish and deliver materials; provide labor, equipment, mixing, pumping, placement, monitoring, testing, protection of existing facilities, cleanup, and restoration of slab openings and disturbed concrete. - OEMs and vendors: No grout OEM, brand, or prospective supplier is specified. DuBois & King, Inc. is named as the author of a reference engineering condition-assessment report, not as a proposed supplier. - Estimated value: Approximately $80,000–$200,000; this is a planning estimate because the solicitation summary provides no stated contract price.

Description

The City of Laconia is seeking sealed proposals from qualified contractors to furnish, deliver, pump, and place cementitious flowable grout to fill an existing subsurface void beneath portions of its Public Works Building at 27 Bisson Avenue. The affected area is approximately 195 feet by 50 feet, and the void averages about 16 inches in height; the estimated grout quantity is approximately 275 cubic yards for bidding purposes only. Work includes labor, equipment, materials, testing, protection of existing facilities, cleanup, and restoration of any floor openings or disturbed concrete. Proposals must be delivered in a sealed envelope by October 21, 2026, at 2:30 PM; email submissions are not accepted.

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