Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work in Tiburon and Belvedere in Marin County. You may see our trucks and equipment politely serving neighbors near Trestle Glen, Lyford Drive, and Tiburon Blvd. We’ve been helping repair foundations, slides, and retaining walls in Marin County for over 24 years.
Here’s the kind of detailed estimate you can rely on, to correct foundation problems and perform structural work, land stabilization, retaining walls, and garage additions.
This estimate is based on structural drawings (sheets S1 & S2). The bid consists of installing three helical piers 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
Helical Piers
• Mobilize to jobsite. Demobilize.
• Install a total of (3) 10 ft. deep Foundation-SupportWorks HP-287 helical piers. Helical piers include (1) 5 ft. 8”–10” galvanized lead helix plate configuration with 3/8-inch thick grade 50 steel standard helix plate configuration plus (1) 5 ft. galvanized extensions and (1) galvanized HP288NCBA-G bracket assembly each. Installation torqueing rates based on torque rating conversion chart.
• Clean-up and remove construction debris from site.
Notes:
• Additional footage for helical pier depths.
• Pull testing or compression testing of helical piers is not included in the main estimate. If pull testing or compression testing are required, testing will be performed on a time and material basis.
Testing Note: Installation will be made using torque conversion charts as an equivalent to pull test operations. The conversion charts produce installation torque conversion ratings based on the equivalent ft-lb torque capacities suggested by the manufacturer. Proposed helical piers installation is based on achieving a final installation torque of 20,000 ft-lb. Additional depths (if needed) required to meet the required capacities will be charged at a per ft. installed cost provided above.
Qualifications and Clarifications
• Includes one mobilization only.
• Proposal is based on working std 40 hours per week, 5 work days and mutually agreeable schedules.
• Standard drilling conditions.
• Full payment upon completion.
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased costs of excavation or drilling due to hard rock, tree roots, caving conditions, underground water. (Hard rock excavation is defined as material that requires the use of pneumatically or hydraulically operated hammers or rams to excavate.) (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes.)
• Increased cost of helical installation due to rubble, boulders, fill or any unknown underground obstruction.
• Any work on utilities including buried pipes.
• Soil injection/permeation grouting.
• Removal of generated spoils from site.
• Erosion control.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
