Need tight access drilling? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing tight access and track drilling in San Francisco for over 24 years. You will see our trucks and equipment working in San Francisco neighborhoods like the Marina, Pacific Heights, Nob Hill, Western Addition, Haight, Castro, Noe Valley, Twin Peaks and so on.
Here’s the kind of detailed estimate you can rely on, to correct foundation problems and perform structural work, including even zero lot line jobs that require our expertise:
This estimate is based on architectural drawings and structural drawings by Dave Olnes. The bid consists of installing a reinforced concrete foundation for a new parking structure plus other walls as per plans.
Scope of Work
New Parking Structure
• Mobilize to jobsite. Demobilize.
• Supervision. Perform weekly cleanup.
• Grub work site area of all small vegetation and remove the cleared materials and strippings from site. Includes removal of existing trees & visible stumps.
• Perform all hard demolition as shown on drawings and as necessary for the installation of the new parking structure. Off-haul demolition debris from site.
• Cut hill side for the installation of the new parking foundations. Vertical cuts estimated to be within 1” of back of new walls for allowance of drainage membranes. Off-haul excavated spoils from site. Shotcrete installation method is assumed to be approved for this project.
• Install upper reinforced concrete wall as per detail B on drawings.
• Install new parking structure walls, footings, front walls and footings, concrete walkway, landing, stairs (6/R) and parking area slab. All as per S1. Includes demolition of entry curb + replacement of it.
• Back-fill top 1 ft. behind wall with compacted native soils.
• Clean up site and remove all construction debris and excess soils.
Earth shoring at North/West side
• Install a combination of I-beams and lagging along the north/west side of the new parking structure to support the vertical cut along the mentioned side for the installation of the new garage wall. This is a preliminary price and engineering or drawings are not included.
Add-on for earth Shoring Engineering Drawings
• Engineering approximate cost is provided below and it is based on similar jobs where shoring engineer must review, revise and incorporate shoring with designed foundation.
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.
• Elevations and layout to be provided by General Contractor performing the remainder of the project.
• Standard RWR drilling conditions.
Note: This bid assumes RWR will be performing services as a Sub-contractor to a General Contractor. Bid assumes contract will utilize standard RWR contractual provisions. RWR reserves the right to accept or reject General Contractor’s contractual provisions.
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased costs of excavation or drilling due to hard rock, caving or 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).
• Demolition of existing concrete footings in excess of 1 ft. thick slabs over 4” thick or any other buried/hidden condition unforeseen by the assumption of normal standards installation procedures.
• Any work on utilities including buried pipes.
• Existing house underpinning or structural shoring.
• Waterproofing membranes (Paraseal) on walls other than new parking area walls.
• Earth shoring other than along north/west side.
• Erosion control
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.
• Surveying and Layout.
