Looking for an experienced underpinning contractor to provide an estimate in the Corte Madera area? RWR Construction provides expert underpinning of foundations. Techniques include installing reinforced concrete piers, driven steel piles or push piles, hand-dug pits, helical anchors or self-drilling anchors. Contact us today for recommendations and a prompt, professional estimate. We’ve been doing underpinning locally for homeowners, contractors, and engineers for over 30 years.
Call us for a detailed estimate. Here’s an example:
8/10/12
Estimate for Foundation Repair
THE SHORE RESIDENCE
This estimate is based on structural plans prepared by Structural Engineer. The bid is for the installation of drilled cast-in-place reinforced concrete piers to stabilize/underpin the existing southern portion of the house & deck foundation as per plans. Our price includes all labor and material to complete the job as per the itemized Scope of Work below.
Scope of Work
Base Bid
• Mobilize to site.
• Demolish and remove from site small portions of existing grade beams as shown on drawings. Remove debris from site.
• Drill and install (8) 18” diameter x 18 ft. deep reinforced concrete piers along the southern portion of the existing residence as per plans. Off-haul spoils from site.
• Excavate for and install (4) 2 ft. wide x 2.5 ft. long x 1 ft. deep reinforced concrete underpinning haunches/pier caps under existing foundation to be connected to the top of the piers as per plans. Includes (4) deck piers as well per structural details and layout shown on drawings. Includes epoxy dowels to tie new to old reinforced concrete work. Includes new reinforced concrete grade beam per 1/S2.
• Clean-up site and remove silt fence and RWR construction debris.
Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to RWR obtaining adequate supply of rock, concrete, asphalt, PVC resins, PVC pipe, fittings at prices quoted at bid time and are good for 30 days.
• Proposal is based on working std 40 hours per week, 5 work days and mutually agreeable schedules.
• Progress payments every two weeks.
Exclusions
• Cost of plans, shop drawings, permits, bonds, testing and inspections.
• Increased costs of excavation or drilling due to hard rock, underground water or caving. (Hard rock drilling is defined as a penetration rate slower than 1ft. in 5 minutes). (Hard rock excavation is defined as material that requires the use of a pneumatic or hydraulic breaker to excavate).
• Demolition of existing slabs over 4” thick.
• Excavation of haunches for foundations buried over 12” deep from existing grades.
• Any work on utilities including buried pipes.
• Structural/earth shoring.
• Repair to landscaping or irrigation.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
