Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work 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:

Estimate for Trench Excavation for installation of new Gas Line in San Francisco

This estimate is for excavation of a trench for installation of a new gas line by others. It includes demo of asphalt and off haul along with the repair of the asphalt. Our price includes all labor and material to complete the work as per the itemized Scope of Work below.

Scope of Work
Mobilization and Layout
• Mobilize to jobsite.
• Contractor to provide Layout.
• Final Cleanup

Grubb and Demo Asphalt
• Grubb existing hillside for trench installation
• Saw cut asphalt approximately 32 linear ft of saw cut.
• Demo and remove asphalt approximately 3ft wide by 16 linear ft.
• Off haul debris from site.

Excavation
• Excavate in street a trench approximately 2 ft down by 2 ft wide by 16 linear ft and continue trench up the hill approximately an additional 15 linear ft.
• Backfill with native soil in trench on hill
• Off haul spoils from site
Backfill/ Compaction and Road Repair
• Backfill trench with road base per city specifications. Compact as necessary.
• Patch asphalt as necessary with a maximum of 3” of asphalt 16ft x 2ft.

Note: Bid assumes the necessary permits for trenching will be obtained by owner or contractor. It is acting as sub-contractor. Bid assumes trench will be opened and closed on same day.

Exclusions
• Cost of plans, permit, bonds, testing and inspections.
• Increased cost of excavation due to hard rock, underground water or caving soils. (Hard rock excavation is defined as material that cannot be excavated with a conventional backhoe or excavator bucket.)
• Any work on utilities including buried pipes or irrigation pipes.
• Replacement of damaged landscaping.
• Excavation and off hauling of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Any Drainage
• Electrical or Plumbing
• Compaction of any soils not outlined in this proposal.
• Importation of backfill material except as noted.

Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work 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, civil drawings and structural drawings. The proposal is for the installation of a new reinforced concrete foundation per structural drawings as well as earth shoring system per structural drawings.

Scope of Work
Mobilization and Supervision
• Mobilize to jobsite. Demobilize.
• Supervision.
• Perform weekly cleanup.
Grubbing and clearing work area
• Grub and clear work site area of all vegetation (except trees and stumps) plus remove the cleared materials and strippings from site.

Existing house structure structural shoring
• Install combination of post, driven pipe pile and cribbing towers with temporary beams to support the existing house structure at elevation 140 as per plans. Installation of cribbing towers to be performed in conjunction with house foundation demolition operations and mass excavation for cribbing tower installation. Removal of cribbing towers once house is re-attached to new foundations (by others) is included.
House & Garage Foundation Demolition for New foundation Installation
• Demolish and remove from site the existing house foundation including the existing house chimney, concrete walkways, concrete stairs, existing garage foundation, existing garage structure & wooden deck, plus scrape existing driveway AC. Includes demolition of all visible concrete foundations for the installation of the new foundations shown on structural drawings. All soft demolition to be provided by GC. See requested broken-down prices provided on sheet one.
• Off-haul all demolished debris from site.

Tieback & shotcrete shoring installation
• Drill and install (116) at 60 kips (design capacity) 1” diameter double corrosion-protected 150 ksi diameter tieback bars in 6” diameter drilled shafts extending into soil as per plans (Includes bonded and un-bonded lengths). Off-haul drilling spoils from site.Note: tiebacks are included at different embedment depths and with bonded and un-bonded lengths accordingly as shown on detail 1/S3.0. For the house, tiebacks at elevation 118’ = 39 ft. total embedment, @ elevation 124’ = 44 ft. total embedment & @ elevation 130’ = 49 ft. total embedment & @ elevation 136 (where applies) = 54 ft. total embedment. The same bonded un-bonded equation applies for the new car elevator area east, north and south sides @ elevations; 139’ 145’ 151’ & 157. An allowance for the installation of a total of 5107 total linear ft. of bonded and un-bonded lengths is included in this estimate.
• Install in sequence a 3” thick layer of reinforced concrete shotcrete in 5 ft. lifts for earth shoring purposes and interlock with a rebar whaler grid system installing a standard nut and 6”x6” washer to lock the temporary earth retention system as excavation proceeds downward.

Mass house foundation & car elevator excavation
• Excavate to new house foundation & sub-grades per elevations shown on drawings. No import is included in this estimate. All native spoils are assumed acceptable to be used for re-compaction.
• Off-haul excess soils from site.

Pier installation
• Drill and install (61) 18” diameter x 20 ft. deep maximum reinforced concrete piers. An allowance of 1220 linear ft. of reinforced concrete piers is included.
• Off-haul excess soils from site.

Backfill and re-compaction operations
• As job progresses and coordinating the installation of the new house retaining wall plus site plan driveway wall sequence with General Contractor, re-use approx. 450 cubic yards of native soil for backfilling and re-compaction behind the new retaining walls mentioned above to create the new auto court area. Includes cutting a maximum of 4 ft. wide x 12” stepped base footings into the native slopes as standard procedure prior to commence re-compaction operations. All excavated spoils generated from “stepped benching to be re-compacted as well.
• Off-haul excess soils from site. See notes below.

Notes:
1. An estimated approx. 1950 cubic yards of dirt will be extracted from the original existing grades to achieve the new slab sub-grades, excavation for the new house & car elevator foundation. At the same time a rough calculation for the re-compaction requirements is approx. 450 cubic yards of the native soil, an excess of approx. 1500 cubic yards of dirt to be off-hauled from site.
2. The excavation price provided includes the off-haul of 1500 cubic yards from site and includes excavation, loading, transportation and dump fees. No deducts

House S2.1, S2.2 & 2.3 & new carport S2.4 foundation + site walls S2.6 concrete work
• For the new garage foundation level per sheet S2.4, install new 5” thick reinforced concrete slab over a new 24” thick x 5 ft. wide perimeter footing foundation per 1/S3.0 retaining/concrete walls.
• For the new third level, floor foundation level, and as per sheet S2.3, install new 5” thick reinforced concrete slab over a new 24” thick x 5 ft. wide perimeter footing foundation per 1/S3.0 retaining/concrete walls. Omit installation of mud/storage room at this level as shown on structural sheet S2.3.
• For the new level two, floor second level, and as per sheet S2.2, continue east side walls up to elevation 140’ plus install new mud/storage room 18” thick mass footing and perimeter walls.
• For the new main house level and as per sheet S2.1, install shown 10” thick elevated slab at new mud/storage room + storage foundation.
• Includes the installation of a new site walls per layout and height retained on sheet S2.6.
• Clean up construction debris from site.
Alternate #1 Erosion Control
• Per indications on C-500
Alternate #2 Utility lines
• A multiline trench approx. 120 ft. long x 36” deep x 18” wide backfilled with 18” of fill sand and 18” of native soil.
• A single service line trench approx. 120 linear ft. long x of 24” wide x 18” deep. Backfill trench with 8” of sand and re-compacted native soil to cap the rest of the trench.

Alternate #3 Earth work area winterization
• Install 6 mil plastic with sand bags over it for temporary winterization as needed.
Alternate #4 Concrete Driveway (optional)
• Install a new 5” thick structural concrete driveway slab on grade for driveway (2905 sq. ft. allowance) area.
Alternate #5 Stump removal
• Remove native sumps from site (up to 36” in diameter)
Notes
• Existing structures protection, adjacent structures protection, elevations, layout and secured batter boards as well as elevation story poles to be provided and confirmed by General Contractor prior to concrete installation.
• Trees to be removed (by others) are assumed to be removed prior to mobilization and brake-ground day.
• Waterproofing and drainage membranes are to be provided and installed by others (please see limited backfill and re-compaction scope above).
• Elevations, provide of elevation story pole, layout providing, checking & confirmation of and secured batter boards to be provided by General Contractor performing the remainder of the project.
• Native soils are assumed acceptable to be used for backfill and re-compaction where needed. Import of engineered fill or any other type of import for re-compaction materials (if needed) is not included in this estimate.
• All walls are assumed Shotcrete installation approved for cost savings. If board formed walls are selected see additional cost and add it to preliminary pricing at each alternate.
• New auto court sub-grades re-compaction operations assumed benching into exiting grades by a standard 12” deep x maximum 4 ft. wide benches. No additional excavations or re-compaction of un-acceptable existing sub-grades is assumed at this point. In an event the project soils engineer requires to over excavate existing grades and backfill and re-compact the driveway area with native soils down to acceptable bearing native materials to receive the new re-compaction operations included in our preliminary proposal additional cost will apply.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Itemized provided pricing is shown as reference and per request of the GC. Itemized prices are not self-supporting.
• Includes one mobilization only.
• Prices are subject to 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. No retention.
Exclusions
• Cost of plans, shop drawings, 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).
• Tree removal, stump removal
• Site drainage.
• Erosion control and winterization.
• Demolition or removal of buried or unknown concrete or other structures (e.g. deep footings, massive footings, buried concrete walls etc.) beyond reasonable (12” below grades x thicknesses above grades) assumed existence of at the time this proposal was being put together.
• Mock ups.
• Driveway resurface, driveway related walls (not outlined on structural drawings), or new auto court installation, concrete stairs, walkways, or any other concrete work not outlined on the current structural drawings or included in our scope of work.
• Metal I-beams/metal work, welding related or any related not mentioned above.
• Precast concrete, integral color slabs or other concrete work not outlined in our scope of work.
• Street sidewalk, street entry driveway, street-curb concrete work or driveway asphalt work.
• Tanks (provided and installed by plumbing contractor), house downspouts or any other plumbing work not related to scope of work outlined above.
• Drainage, waterproofing membranes, water stop plus perimeter edge drains/aqua drains for all new concrete walls.
• Plumbing work, zurn drains, plumbing lines, sump/ejector pit installation or any other work not mentioned in our quote.
• Provide or install of shrink/leveling grout.
• Soil injection/Soil grouting.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Additional cost due to utility obstructions including any additional work on underground utilities or buried pipes.
• Supply of embedments for concrete work other than foundation “J” bolts.

Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work 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 plans by structural engineer. The bid consists of installing a new reinforced concrete section of house foundation on piers plus installing isolated pier/caps with tiebacks as shown on drawings. 

Our price includes all labor and material to complete the job as per the itemized “Scope of Work” below.

Scope of Work
Wall Foundation Reinforcement
• Mobilize to jobsite. Demobilize.
• Supervision. Perform weekly cleanup.
• Temporarily support the existing corner of the building where the existing foundation needs to be replaced on shoring towers for the replacement of the existing foundation, saw-cut and demolish the portion of the existing concrete foundation as shown on drawings. Remove demolished foundation debris from site.
• Drill and install (10) 18” diameter x 18 ft. deep reinforced concrete piers with (4) #7 vertical reinforcement and #3 ties @ 10” on center. Stockpile drilling spoils on site.
Note: Due to soil conditions outlined on the soils report for this project and the unknown pier final depths (to be dictated by the project soils engineer at the time of drilling, we have included a pier drilling allowance for the installation of the new reinforced concrete piers and it consists of (5) 8hr. drilling days and is included in this estimate.
• Core drill (7) 8” diameter holes thru the existing concrete wall for the installation of the tiebacks.
• Drill and install (7) 15 kip capacity (lock-off load) x 30’ deep total depth 1” diameter double corrosion-protected tiebacks in 6” diameter drilled shafts (Includes bonded and un-bonded lengths). Stockpile drilling spoils on site.
Note: Due to the site soil conditions outlined on the soils report for this project, we have included a tieback drilling allowance for the installation of (7) tiebacks and it consists of (3.5) 8hr. drilling days and is included in this estimate.
• Excavate for and install (7) reinforced concrete haunches/pier caps at each of the (7) pier location as shown on drawings. All generated spoils to be stockpiled on site
• Excavate for and install a new reinforced concrete grade beam over (3) new piers as per plans. Includes the installation of (3) new HDG-CBSQ 66’s as per plans.
• Proof test and lock-off tiebacks as shown on drawings (22.5 k).
• Clean-up and remove related construction debris from site.

Alternate #1-Piers Casing Installation Cost
• This additional cost is for installing a maximum of (3) 20” diameter (4 ft. sections) continuous metal casing at each pier location due to unstable native soils outlined on soils report. The additional cost is per pier (if required).
Alternate #2-Piers Casing Removal Cost
• This additional cost is for the removal of the metal casing previously installed (if needed) as concrete is being placed per indications on drawings. The additional cost is per pier (if required).
Alternate #3-Tiebacks Casing Installation and Removal Cost
• This additional cost provided is for the installation and removal of the metal casing at each tieback location for a maximum of 10 ft. (if needed). The additional cost also includes the removal of the 8” diameter metal casing section as grout is being placed per indications on drawings. The additional cost is per tieback at each location (if required).

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to 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.
• Standard drilling conditions.
• Progress payments every two weeks.
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.)
• Tree work, tree service or any additional work generated by existing trees of tree roots.
• Demolition hard or soft other than necessary for temporary structural shoring installation.
• Any work on utilities including buried pipes.
• Soil grouting, soil injection or permeation.
• Framing work or carpentry work or replacement of existing framing not mentioned in our scope of work.
• Structural/earth shoring, house re-leveling (unless mentioned in our scope of work).
• Removal of generated spoils from site.
• Waterproofing and drainage.
• Erosion control.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.
• Chimney underpinning or work related to it.

Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work 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 revised estimate is based on revised plans. The bid consists of installing a new reinforced concrete section of house foundation on helical piers plus installing isolated helical pier/caps with helical tiebacks as per revised drawings.

Our price includes all labor and material to complete the job as per the itemized “Scope of Work” below.

Scope of Work
Wall Foundation Reinforcement
• Mobilize to jobsite. Demobilize.
• Supervision. Perform weekly cleanup.
• Temporarily support the existing corner of the building where the existing foundation needs to be replaced on shoring towers for the replacement of the existing foundation, saw-cut and demolish the portion of the existing concrete foundation as shown on drawings. Remove demolished foundation debris from site.
• For the (2) isolated vertical piers below the new concrete foundation, install a total of (2) 17 ft. deep Foundation-SupportWorks HP-287 helical piers. Helical piers include (1) 7 ft. 8”–10” galvanized lead helix plate configuration with 3/8-inch thick grade 50 steel standard helix plate configuration plus (2) 5 ft. galvanized extensions and (1) galvanized HP288NCBA-G bracket assembly each. Test measuring installation torqueing rates as per plans. Other type of field testing (pull testing or compression testing) is not included. See additional cost provided below.
• For the (8) vertical piers (against the foundation) where the vertical pier interacts with the horizontal helical tieback, at each location install a total of (8) 17 ft. deep Foundation-SupportWorks HP-287 helical piers. Helical piers include (1) 7 ft. 8”–10” galvanized lead helix plate configuration with 3/8-inch thick grade 50 steel standard helix plate configuration plus (2) 5 ft. galvanized extensions and (1) galvanized FS288BLRA-G bracket assembly at each vertical helical pier/helical tieback location. For the tieback interaction at each of the (8) vertical helical pier locations, install a total of (8) 35 ft. long Foundation-SupportWorks HA-150 helical tieback. Helical tiebacks include (1) 7 ft. 10”–12”-14” galvanized lead helix plate configuration with 3/8-inch thick grade 50 steel standard helix plate configuration plus (4) 7 ft. galvanized extensions each. Attach bracket assembly to house foundation per vertical/lateral bracket assembly configuration at (8) locations via epoxy doweled bolts encapsulated in concrete at each location.
• Excavate for and install (7) reinforced concrete haunches/helical pier caps at each of the (7) pier location as shown on drawings. All generated spoils to be spread on site (rear yard per client’s instructions).
• Excavate for and install a new reinforced concrete grade beam over (3) new piers as per plans. Includes the installation of (3) new HDG-CBSQ 66’s as per plans.
• 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 (base bid) and the amount of the helical piers that can be tested will depend on requirements by the project’s engineer. If pull testing or compression testing are required, testing will be performed on a time and material basis.
• For re-calibration of the testing jack (If required by engineer).
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 equal to achieved final torque capacities. Proposed Helical pier is based on final installation torque of 34,000 ft-lb = 1200 psi (conversion charts attached) capacity.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to 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.
• Standard drilling conditions.
• Progress payments every two weeks.

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.)
• Tree work, tree service or any additional work generated by existing trees of tree roots.
• Increased cost of helical installation due to rubble, boulders, fill or any unknown underground obstruction.
• Demolition hard or soft other than necessary for temporary structural shoring installation.
• Any work on utilities including buried pipes.
• Soil grouting, soil injection or permeation.
• Framing work or carpentry work or replacement of existing framing not mentioned in our scope of work.
• Structural/earth shoring, house re-leveling (unless mentioned in our scope of work).
• Removal of generated spoils from site.
• Waterproofing and drainage.
• Erosion control.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.
• Chimney underpinning or work related to it.

Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been doing foundation, excavation, and drilling work 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 is an estimate based on unsigned and undated plans provided by contractor. The scope of work includes drilling, installing concrete and steel in pier hole. The price includes all labor and material to complete the work as per the itemized scope of work below.

Scope of Work

Mobilization and Layout
• After existing building has been demolished by others mobilize to jobsite with portable drilling rigs along with other necessary equipment to complete job (See notes below).
• Layout to be completed by others per plans and specifications.
• Daily Cleanup
• Final Cleanup

Piers
• Drill three (3) 18” diameter x 17 ft depth maximum and two (2) 18” diameter x 14 ft depth maximum pier holes with portable drill rig. See drilling conditions and exclusions. Final depths to be determined by soils engineer..
• Install cage per plans and place concrete in hole per plans.
• Includes sono tube as required
• Off haul pier spoils

Slab• Install approximately 425 sq. ft of 4 inches of light weight concrete over plywood prepared by others per plans. #4 reinforcement @ 18 inches e.w. No waterproofing included.

Qualifications and Clarifications
• Job is bid as package.
• Includes two mobilizations only.
• Prices are subject to adequate supply of wood, steel, rock, concrete, and 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.
• Survey of property lines must be done by licensed surveyor. Survey points must be provided
• Price is preliminary subject to final plans for construction
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Any additional work due to utilities including buried pipes or irrigation pipes unless noted.
• 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).
• Additional cost as a result of unknown obstructions
• Replacement of damaged landscaping, driveway or fence.
• Excavation and off hauling of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Any work related to landscaping, fences or gates except as outlined
• Survey of property lines or layout
• Landscaping or irrigation
• Excludes electrical and plumbing
• Any earth shoring not included
• Any drainage work
• Embedment into concrete including brackets except J bolts
• Permeable concrete