Category Archives: underpinning

Our estimator, Trevor, got a call to inspect a foundation problem, and came back with these images, as well as measurements and assessment of the entire situation of the home.  Moisture has been getting under this house, and has done a lot of damage.   The recommended repair will include diverting water away from the home, removing and replacing damaged foundation and mud sill, and of course, making sure the home is level.

IMG_20140509_102057415

Failing Foundation and Rotting Mud Sill and Rim Joist.

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Need underpinning to permanently stabilize home or level floors in Berkeley? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning in Berkeley for over 24 years. You will see our trucks and equipment working in Berkeley, Berkeley Hills, and Kensington.

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 a site visit and structural drawings. The scope of work is for demo, excavation, installation of underpinning piers/haunches, installing dowels and grade beams and foundation drain. Included is an allowance for reinstalling the stair and deck. 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
• Mobilize to jobsite with necessary equipment to complete job (See qualifications and clarifications)
• Layout underpinning piers per plans and specifications
• Daily Cleanup
• Final Cleanup

Demo and Shore Existing Structure
• Saw cut approximately 18 ft of driveway in front of garage and remove concrete from driveway across front of garage approximately 1 ft out. Where haunch is located remove approximately 2 ft x 2 ft. of additional concrete driveway.
• Demo and remove concrete stairs and deck as required
• Demo and remove concrete wall and pad on North side of house (Spa heater to be removed by others prior to demo of pad).
• Off haul debris from site
• Shore North side deck existing structure to allow for installation of new pier supports using RWR designed shoring method.

 

Excavation and Off Haul
• Excavate for underpinning haunches per plans and specifications (1/S1, 3/S1 and 4/S1).
• Excavate for installation of tie beam next to foundation per plans and specifications 2/S1.
• Off haul spoils from site.

Concrete Reinforced Piers
• Drill twelve (12) 18” diameter holes x 15 ft maximum with portable drilling equipment per plans and specifications S1. Final depths to be determined by soils engineer. See drilling condition exclusions.
• Install twelve (12) 18” diameter concrete reinforced piers x 15 ft per plans and specifications.
• Off haul pier spoils from site.

Haunches and Tie beams
• Install approximately 80 dowels using Hilti HY 150 two part adhesive anchor system per plans and specifications
• Install rebar and concrete into haunch excavation per plans and specifications 1/S1, 3/S1 and 4/S1.
• Install rebar and concrete into 1 ft x 1 ft tie beam excavation 1/S1, 2/S1, 3/S1 and 4/S1.

Backfill
• Backfill all exterior concrete work as required by plans and specifications.

Repair Stairs and Side Deck
• Using existing 4×4 posts reinstall existing posts using galvanized CBSQ44 brackets and attach posts per plans and specifications.
• Install new wooden stairway and deck to replace removed concrete stairs in front of house.
Does not include paint or paint labor. Price does not include rebuilding of structural stair support if necessary. Upon removal of concrete stairs engineer will approve structural integrity of stair and deck support. Stairs and deck are over living space. This will require installation of new waterproofing. RWR will engage a subcontractor to install waterproofing prior to installation of new wooden stairs. Price does not include this additional cost of waterproofing or any type of flashing that may be required.

Drainage
• Trench approximately 50 linear ft in crawl space of house to install foundation drain per plans and specifications.
• Install approximately 50 linear ft of perforated SDR 35 pipe with cleanouts as necessary along foundation per plans and specifications 6/S1.
• Trench is to be a minimum of 12 in wide x 12 in below crawl space grades
• Trench will be lined with filter fabric and filled with ¾ in drain rock.
• Include a tight line to surface drain drop inlet and exit to outside.
• Discharge perforated pipe to tight pipe on the exterior into existing drainage outlet per plans and specifications.
Alternative #1
• In lieu of demo concrete stairs and replacing with wood stairs the pier located under the stair way would be relocated to the exterior of the house (This has been approved by the engineer).
• The haunch for detail 4/S1 would be redesigned with larger rebar (subject to calculation and detail provided by engineer).
• Excavation would occur in interior of home. Demo sheetrock in closet for access under stairway.
• Excavate haunch per plans and specifications with spoils removed through downstairs window.
• Repair sheetrock as required (does not include paint).
(Note: Price difference is greater than shown as waterproofing will not be required with alternative)

 

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 wood, steel, 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.
• RWR is not responsible for survey lines. Survey of property lines must be done by licensed surveyor.
• Progress payments every two weeks.
• Estimate does not include replacement of landscaping. RWR will remove landscape material as directed by homeowner for future replacement by others.

 
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased cost of drilling or excavation due to hard rock, underground water or caving soils. (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes.) (Hard rock excavation is defined as material that cannot be excavated with a conventional backhoe or excavator bucket.)
• Any additional work required as a result of utilities including buried pipes or irrigation pipes.
• 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
• Additional drainage not specifically outlined in this proposal.
• Earth shoring
• Winterization erosion control items (to be completed on a Time and Material basis if required)
• Electrical or Plumbing except as outlined in this proposal
• Backfill or Compaction of any soils not outlined in this proposal.
• Importation of backfill material except as noted.
• Survey of property lines
• Landscaping or irrigation

 

 

 

Read More →

Need underpinning to permanently stabilize home or level floors? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning 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 a site visit and structural drawings. The scope of work is for demo, excavation, installation of underpinning piers/haunches, installing dowels and grade beams and foundation drain. Included is an allowance for reinstalling the stair and deck. 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
• Mobilize to jobsite with necessary equipment to complete job (See qualifications and clarifications)
• Layout underpinning piers per plans and specifications
• Daily Cleanup
• Final Cleanup

Demo and Shore Existing Structure
• Saw cut approximately 18 ft of driveway in front of garage and remove concrete from driveway across front of garage approximately 1 ft out. Where haunch is located remove approximately 2 ft x 2 ft. of additional concrete driveway.
• Demo and remove concrete stairs and deck as required
• Demo and remove concrete wall and pad on North side of house (Spa heater to be removed by others prior to demo of pad).
• Off haul debris from site
• Shore North side deck existing structure to allow for installation of new pier supports using RWR designed shoring method.

 

Excavation and Off Haul
• Excavate for underpinning haunches per plans and specifications (1/S1, 3/S1 and 4/S1).
• Excavate for installation of tie beam next to foundation per plans and specifications 2/S1.
• Off haul spoils from site.

Concrete Reinforced Piers
• Drill twelve (12) 18” diameter holes x 15 ft maximum with portable drilling equipment per plans and specifications S1. Final depths to be determined by soils engineer. See drilling condition exclusions.
• Install twelve (12) 18” diameter concrete reinforced piers x 15 ft per plans and specifications.
• Off haul pier spoils from site.

Haunches and Tie beams
• Install approximately 80 dowels using Hilti HY 150 two part adhesive anchor system per plans and specifications
• Install rebar and concrete into haunch excavation per plans and specifications 1/S1, 3/S1 and 4/S1.
• Install rebar and concrete into 1 ft x 1 ft tie beam excavation 1/S1, 2/S1, 3/S1 and 4/S1.

Backfill
• Backfill all exterior concrete work as required by plans and specifications.

Repair Stairs and Side Deck
• Using existing 4×4 posts reinstall existing posts using galvanized CBSQ44 brackets and attach posts per plans and specifications.
• Install new wooden stairway and deck to replace removed concrete stairs in front of house.
Does not include paint or paint labor. Price does not include rebuilding of structural stair support if necessary. Upon removal of concrete stairs engineer will approve structural integrity of stair and deck support. Stairs and deck are over living space. This will require installation of new waterproofing. RWR will engage a subcontractor to install waterproofing prior to installation of new wooden stairs. Price does not include this additional cost of waterproofing or any type of flashing that may be required.

Drainage
• Trench approximately 50 linear ft in crawl space of house to install foundation drain per plans and specifications.
• Install approximately 50 linear ft of perforated SDR 35 pipe with cleanouts as necessary along foundation per plans and specifications 6/S1.
• Trench is to be a minimum of 12 in wide x 12 in below crawl space grades
• Trench will be lined with filter fabric and filled with ¾ in drain rock.
• Include a tight line to surface drain drop inlet and exit to outside.
• Discharge perforated pipe to tight pipe on the exterior into existing drainage outlet per plans and specifications.
Alternative #1
• In lieu of demo concrete stairs and replacing with wood stairs the pier located under the stair way would be relocated to the exterior of the house (This has been approved by the engineer).
• The haunch for detail 4/S1 would be redesigned with larger rebar (subject to calculation and detail provided by engineer).
• Excavation would occur in interior of home. Demo sheetrock in closet for access under stairway.
• Excavate haunch per plans and specifications with spoils removed through downstairs window.
• Repair sheetrock as required (does not include paint).
(Note: Price difference is greater than shown as waterproofing will not be required with alternative)

 

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 wood, steel, 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.
• RWR is not responsible for survey lines. Survey of property lines must be done by licensed surveyor.
• Progress payments every two weeks.
• Estimate does not include replacement of landscaping. RWR will remove landscape material as directed by homeowner for future replacement by others.

 
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased cost of drilling or excavation due to hard rock, underground water or caving soils. (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes.) (Hard rock excavation is defined as material that cannot be excavated with a conventional backhoe or excavator bucket.)
• Any additional work required as a result of utilities including buried pipes or irrigation pipes.
• 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
• Additional drainage not specifically outlined in this proposal.
• Earth shoring
• Winterization erosion control items (to be completed on a Time and Material basis if required)
• Electrical or Plumbing except as outlined in this proposal
• Backfill or Compaction of any soils not outlined in this proposal.
• Importation of backfill material except as noted.
• Survey of property lines
• Landscaping or irrigation

 

 

 

Read More →

Underpinning is the extension of the existing foundation down to competent bearing material, which is material that will support the weight of the house and foundation without settling. Techniques include installing reinforced concrete piers, driven steel piles or push piles, hand-dug pits, helical anchors or self-drilling anchors.
Underpinning helps stabilize the foundation, and is often necessary as first step to a major home remodel.

Underpinning is often an excellent solution to level floors, stop the foundation from moving, lift the home close to it’s orginal position, and greatly increase the value of your home.

RWR uses portable equipment during installation, with minimal disruption to your home and surrounding area.

Schedule a free inspection with one of our professional consultants, and get our recommendations for your situation.

Here is an example estimate from RWR, so you can get an idea of the detail and professionalism you can expect from our team of specialists.

This estimate is based on a site visit and structural drawings. The scope of work is for demo, excavation, installation of underpinning piers/haunches, installing dowels and grade beams and foundation drain. Included is an allowance for reinstalling the stair and deck. 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
• Mobilize to jobsite with necessary equipment to complete job (See qualifications and clarifications)
• Layout underpinning piers per plans and specifications
• Daily Cleanup
• Final Cleanup

Demo and Shore Existing Structure
• Saw cut approximately 18 ft of driveway in front of garage and remove concrete from driveway across front of garage approximately 1 ft out. Where haunch is located remove approximately 2 ft x 2 ft. of additional concrete driveway.
• Demo and remove concrete stairs and deck as required
• Demo and remove concrete wall and pad on North side of house (Spa heater to be removed by others prior to demo of pad).
• Off haul debris from site
• Shore North side deck existing structure to allow for installation of new pier supports using RWR designed shoring method.

 

Excavation and Off Haul
• Excavate for underpinning haunches per plans and specifications (1/S1, 3/S1 and 4/S1).
• Excavate for installation of tie beam next to foundation per plans and specifications 2/S1.
• Off haul spoils from site.

Concrete Reinforced Piers
• Drill twelve (12) 18” diameter holes x 15 ft maximum with portable drilling equipment per plans and specifications S1. Final depths to be determined by soils engineer. See drilling condition exclusions.
• Install twelve (12) 18” diameter concrete reinforced piers x 15 ft per plans and specifications.
• Off haul pier spoils from site.

Haunches and Tie beams
• Install approximately 80 dowels using Hilti HY 150 two part adhesive anchor system per plans and specifications
• Install rebar and concrete into haunch excavation per plans and specifications 1/S1, 3/S1 and 4/S1.
• Install rebar and concrete into 1 ft x 1 ft tie beam excavation 1/S1, 2/S1, 3/S1 and 4/S1.

Backfill
• Backfill all exterior concrete work as required by plans and specifications.

Repair Stairs and Side Deck
• Using existing 4×4 posts reinstall existing posts using galvanized CBSQ44 brackets and attach posts per plans and specifications.
• Install new wooden stairway and deck to replace removed concrete stairs in front of house.
Does not include paint or paint labor. Price does not include rebuilding of structural stair support if necessary. Upon removal of concrete stairs engineer will approve structural integrity of stair and deck support. Stairs and deck are over living space. This will require installation of new waterproofing. RWR will engage a subcontractor to install waterproofing prior to installation of new wooden stairs. Price does not include this additional cost of waterproofing or any type of flashing that may be required.

Drainage
• Trench approximately 50 linear ft in crawl space of house to install foundation drain per plans and specifications.
• Install approximately 50 linear ft of perforated SDR 35 pipe with cleanouts as necessary along foundation per plans and specifications 6/S1.
• Trench is to be a minimum of 12 in wide x 12 in below crawl space grades
• Trench will be lined with filter fabric and filled with ¾ in drain rock.
• Include a tight line to surface drain drop inlet and exit to outside.
• Discharge perforated pipe to tight pipe on the exterior into existing drainage outlet per plans and specifications.
Alternative #1
• In lieu of demo concrete stairs and replacing with wood stairs the pier located under the stair way would be relocated to the exterior of the house (This has been approved by the engineer).
• The haunch for detail 4/S1 would be redesigned with larger rebar (subject to calculation and detail provided by engineer).
• Excavation would occur in interior of home. Demo sheetrock in closet for access under stairway.
• Excavate haunch per plans and specifications with spoils removed through downstairs window.
• Repair sheetrock as required (does not include paint).
(Note: Price difference is greater than shown as waterproofing will not be required with alternative)

 

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 wood, steel, 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.
• RWR is not responsible for survey lines. Survey of property lines must be done by licensed surveyor.
• Progress payments every two weeks.
• Estimate does not include replacement of landscaping. RWR will remove landscape material as directed by homeowner for future replacement by others.

 
Exclusions
• Cost of plans, permits, bonds, testing and inspections.
• Increased cost of drilling or excavation due to hard rock, underground water or caving soils. (Hard rock drilling is defined as a penetration rate slower than 1 ft. in 5 minutes.) (Hard rock excavation is defined as material that cannot be excavated with a conventional backhoe or excavator bucket.)
• Any additional work required as a result of utilities including buried pipes or irrigation pipes.
• 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
• Additional drainage not specifically outlined in this proposal.
• Earth shoring
• Winterization erosion control items (to be completed on a Time and Material basis if required)
• Electrical or Plumbing except as outlined in this proposal
• Backfill or Compaction of any soils not outlined in this proposal.
• Importation of backfill material except as noted.
• Survey of property lines
• Landscaping or irrigation

 

 

 

Read More →

Need underpinning to permanently stabilize home or level floors in Berkeley? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning in Berkeley for over 24 years. You will see our trucks and equipment working in Berkeley, Berkeley Hills, and Kensington.

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 structural. The bid is for the installation of drilled cast-in-place reinforced concrete piers and grade beams to stabilize the eastern side of the house 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
• Mobilize to site.
• Install a temporary wooden earth and debris catch/retention wall along the East down hill side of the property to avoid damage to neighbors property. Remove from site when job is completed.
• Demolish and remove from site the existing failing walkways and entry stair.
• Remove, set aside and re-install rear deck boards as necessary for the installation of the concrete piers and grade beam.
• Remove existing landscaping rocks and other small obstructions in the way for the installation of the piers.
• Drill and install (2) 18” diameter x 19 ft. deep maximum and (6) 18” diameter x 18 ft deep maximum reinforced concrete piers along eastern side of house and part way up both sides of house as per plan layout. Off-haul drilling spoils from site.
• Excavate for and install (8) 2 ft. wide x 2 ft. deep x various lengths (as per plans) reinforced concrete pier caps connected to the top of the piers and either butted up against or doweled to the existing house foundation as per plans.
• At piers 3, 4, 5 & 6 install 8” thick perimeter reinforced concrete retention/edge wall as shown on drawings. As well as the tie beam at the wooden deck side as per detail 5/S2. Includes epoxy dowels as per plans.
• Install approx. 322 square ft of new 6” thick slab on grade as on top of the structural work creating a new walkway and front step as per plans.
• Backfill and re-compact as needed for the slab on grade installation.
• Install drainage lines as per plans. Includes (3) 6” square NDS area drains, pick up (2) downspouts and outlet via buried SDR-35 solid line to the street as per plans.
• Clean up site and remove RWR’s related construction debris.

Notes
• If the bond is eliminated (such bonds are usually used for public work jobs) reduce price by 3% of the final price. Invoices the client after work is completed and does not require any sub contractors to perform this job, therefore the client is always ahead based on the work performed.

Alternate # 1
• Install basic erosion control (e.g. straw wattle, silt fence) along eastern side of the property. As per City requirements.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to 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.
• Standard home improvement contract including all provisions and exhibits.
• Site winterization. (see erosion control included above)
• Progress payments every two weeks.

Exclusions
• Cost of plans, permits, 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).
• Any work on utilities including buried pipes.
• Removal of spoils from site not mentioned above.
• Structural/earth shoring.
• Repair to landscaping or irrigation.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.

 

 

Read More →

Need underpinning to permanently stabilize home or level floors? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning 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 structural. The bid is for the installation of drilled cast-in-place reinforced concrete piers and grade beams to stabilize the eastern side of the house 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
• Mobilize to site.
• Install a temporary wooden earth and debris catch/retention wall along the East down hill side of the property to avoid damage to neighbors property. Remove from site when job is completed.
• Demolish and remove from site the existing failing walkways and entry stair.
• Remove, set aside and re-install rear deck boards as necessary for the installation of the concrete piers and grade beam.
• Remove existing landscaping rocks and other small obstructions in the way for the installation of the piers.
• Drill and install (2) 18” diameter x 19 ft. deep maximum and (6) 18” diameter x 18 ft deep maximum reinforced concrete piers along eastern side of house and part way up both sides of house as per plan layout. Off-haul drilling spoils from site.
• Excavate for and install (8) 2 ft. wide x 2 ft. deep x various lengths (as per plans) reinforced concrete pier caps connected to the top of the piers and either butted up against or doweled to the existing house foundation as per plans.
• At piers 3, 4, 5 & 6 install 8” thick perimeter reinforced concrete retention/edge wall as shown on drawings. As well as the tie beam at the wooden deck side as per detail 5/S2. Includes epoxy dowels as per plans.
• Install approx. 322 square ft of new 6” thick slab on grade as on top of the structural work creating a new walkway and front step as per plans.
• Backfill and re-compact as needed for the slab on grade installation.
• Install drainage lines as per plans. Includes (3) 6” square NDS area drains, pick up (2) downspouts and outlet via buried SDR-35 solid line to the street as per plans.
• Clean up site and remove RWR’s related construction debris.

Notes
• If the bond is eliminated (such bonds are usually used for public work jobs) reduce price by 3% of the final price. Invoices the client after work is completed and does not require any sub contractors to perform this job, therefore the client is always ahead based on the work performed.

Alternate # 1
• Install basic erosion control (e.g. straw wattle, silt fence) along eastern side of the property. As per City requirements.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to 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.
• Standard home improvement contract including all provisions and exhibits.
• Site winterization. (see erosion control included above)
• Progress payments every two weeks.

Exclusions
• Cost of plans, permits, 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).
• Any work on utilities including buried pipes.
• Removal of spoils from site not mentioned above.
• Structural/earth shoring.
• Repair to landscaping or irrigation.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.

 

 

Read More →

Underpinning is the extension of the existing foundation down to competent bearing material, which is material that will support the weight of the house and foundation without settling. Techniques include installing reinforced concrete piers, driven steel piles or push piles, hand-dug pits, helical anchors or self-drilling anchors.
Underpinning helps stabilize the foundation, and is often necessary as first step to a major home remodel.

Underpinning is often an excellent solution to level floors, stop the foundation from moving, lift the home close to it’s orginal position, and greatly increase the value of your home.

RWR uses portable equipment during installation, with minimal disruption to your home and surrounding area.

Schedule a free inspection with one of our professional consultants, and get our recommendations for your situation.

Here is an example estimate from RWR, so you can get an idea of the detail and professionalism you can expect from our team of specialists.

This estimate is based on structural. The bid is for the installation of drilled cast-in-place reinforced concrete piers and grade beams to stabilize the eastern side of the house 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
• Mobilize to site.
• Install a temporary wooden earth and debris catch/retention wall along the East down hill side of the property to avoid damage to neighbors property. Remove from site when job is completed.
• Demolish and remove from site the existing failing walkways and entry stair.
• Remove, set aside and re-install rear deck boards as necessary for the installation of the concrete piers and grade beam.
• Remove existing landscaping rocks and other small obstructions in the way for the installation of the piers.
• Drill and install (2) 18” diameter x 19 ft. deep maximum and (6) 18” diameter x 18 ft deep maximum reinforced concrete piers along eastern side of house and part way up both sides of house as per plan layout. Off-haul drilling spoils from site.
• Excavate for and install (8) 2 ft. wide x 2 ft. deep x various lengths (as per plans) reinforced concrete pier caps connected to the top of the piers and either butted up against or doweled to the existing house foundation as per plans.
• At piers 3, 4, 5 & 6 install 8” thick perimeter reinforced concrete retention/edge wall as shown on drawings. As well as the tie beam at the wooden deck side as per detail 5/S2. Includes epoxy dowels as per plans.
• Install approx. 322 square ft of new 6” thick slab on grade as on top of the structural work creating a new walkway and front step as per plans.
• Backfill and re-compact as needed for the slab on grade installation.
• Install drainage lines as per plans. Includes (3) 6” square NDS area drains, pick up (2) downspouts and outlet via buried SDR-35 solid line to the street as per plans.
• Clean up site and remove RWR’s related construction debris.

Notes
• If the bond is eliminated (such bonds are usually used for public work jobs) reduce price by 3% of the final price. Invoices the client after work is completed and does not require any sub contractors to perform this job, therefore the client is always ahead based on the work performed.

Alternate # 1
• Install basic erosion control (e.g. straw wattle, silt fence) along eastern side of the property. As per City requirements.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise
• Includes one mobilization only.
• Prices are subject to 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.
• Standard home improvement contract including all provisions and exhibits.
• Site winterization. (see erosion control included above)
• Progress payments every two weeks.

Exclusions
• Cost of plans, permits, 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).
• Any work on utilities including buried pipes.
• Removal of spoils from site not mentioned above.
• Structural/earth shoring.
• Repair to landscaping or irrigation.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.

 

 

Read More →

Need underpinning to permanently stabilize home or level floors? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning 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 drawings. The proposal consists of performing structural underpinning/replacement repairs to the existing deck and house foundation as per plans as well as the replacement of the existing wooden deck replacement as separately proposed below.
Scope of Work
I. – Foundation Underpinning A-S2 BASE BID
• Mobilize to jobsite. Demobilize.
• Supervision.
• Remove existing wooden deck and off-haul debris from site (see notes below).
• Install combination of post, driven pipe pile and crib towers with temporary beams to support main floor of house @ the dining area. Remove shoring system after house is re-supported on new perimeter and interior foundations. (Re-leveling not included in this base bid, see additional cost provided below).
• Drill and install a total of: (1) 24” diameter x 14 ft deep, (1) 24” diameter x 22 ft deep, (1) 18” diameter x 14 ft deep, (1) 18” diameter x 16 ft deep and (1) 18” diameter x 17 ft deep reinforced concrete piers as per sheet S2 layout and structural details on sheets S2, S3 & S4. Remove drilling spoils from site.
• Excavate for and install new reinforced concrete grade beams, tie beams and pier caps as per plans. Includes drilling and installing epoxy dowels to tie new to existing foundations.
• Off-haul related spoils from site.
• Re-install underpinning area 6×6 posts and 1212HT straps below the dining area as per plans as well as (2) deck supports and all other embedments related to the future re-construction of the new wooden deck (see additional price provided below).
• Install drainage system as shown on drawings.
• Clean up site and remove RWR construction debris from site.

Alternate Bid Work Scope I
Wooden Deck Replacement
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace existing wooden deck (to same shape/form) per structural details provided using pressure treated lumber for the framing structure, Simpson brackets CC66 and attachments as per plans, 2×10 joist for framing and Con hart B (higher grade) redwood lumber for finish product on decking materials, railing, wooden landing and stairs.

Alternate Bid Work Scope II
Entry Replacement S5
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace entry side deck per instructions on sheet S5.

Construction Notes:
• Existing wooden deck is assumed to be completely demolished to avoid performing additional structural shoring operations. If needed, sections of the wooden deck can be removed for the installation of the new concrete foundations while the deck replacement permits are in process. Shoring scheme outlined above (base bid) is included for dining area of the existing living space area of the house structure only.
• Due to temporary shoring installation under the existing house (living space/dining area/ceramic floor) structure, installation/removal of shoring may result in cracked walls, cracked floors, uneven floors finishes as well as other cosmetic damages. RWR is not including repair of same in this estimate and will not be responsible for such items.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise.
• Itemized prices are provided for illustrative purposes only and 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.

Exclusions
• Cost of plans, 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).
• Hardscaping or landscaping work.
• Any work on existing utilities including buried pipes.
• Waterproofing.
• Erosion control.
• Drainage work.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.

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Underpinning is the extension of the existing foundation down to competent bearing material, which is material that will support the weight of the house and foundation without settling. Techniques include installing reinforced concrete piers, driven steel piles or push piles, hand-dug pits, helical anchors or self-drilling anchors.
Underpinning helps stabilize the foundation, and is often necessary as first step to a major home remodel.

Underpinning is often an excellent solution to level floors, stop the foundation from moving, lift the home close to it’s orginal position, and greatly increase the value of your home.

RWR uses portable equipment during installation, with minimal disruption to your home and surrounding area.

Schedule a free inspection with one of our professional consultants, and get our recommendations for your situation.

Here is an example estimate from RWR, so you can get an idea of the detail and professionalism you can expect from our team of specialists.

This estimate is based on drawings. The proposal consists of performing structural underpinning/replacement repairs to the existing deck and house foundation as per plans as well as the replacement of the existing wooden deck replacement as separately proposed below.
Scope of Work
I. – Foundation Underpinning A-S2 BASE BID
• Mobilize to jobsite. Demobilize.
• Supervision.
• Remove existing wooden deck and off-haul debris from site (see notes below).
• Install combination of post, driven pipe pile and crib towers with temporary beams to support main floor of house @ the dining area. Remove shoring system after house is re-supported on new perimeter and interior foundations. (Re-leveling not included in this base bid, see additional cost provided below).
• Drill and install a total of: (1) 24” diameter x 14 ft deep, (1) 24” diameter x 22 ft deep, (1) 18” diameter x 14 ft deep, (1) 18” diameter x 16 ft deep and (1) 18” diameter x 17 ft deep reinforced concrete piers as per sheet S2 layout and structural details on sheets S2, S3 & S4. Remove drilling spoils from site.
• Excavate for and install new reinforced concrete grade beams, tie beams and pier caps as per plans. Includes drilling and installing epoxy dowels to tie new to existing foundations.
• Off-haul related spoils from site.
• Re-install underpinning area 6×6 posts and 1212HT straps below the dining area as per plans as well as (2) deck supports and all other embedments related to the future re-construction of the new wooden deck (see additional price provided below).
• Install drainage system as shown on drawings.
• Clean up site and remove RWR construction debris from site.

Alternate Bid Work Scope I
Wooden Deck Replacement
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace existing wooden deck (to same shape/form) per structural details provided using pressure treated lumber for the framing structure, Simpson brackets CC66 and attachments as per plans, 2×10 joist for framing and Con hart B (higher grade) redwood lumber for finish product on decking materials, railing, wooden landing and stairs.

Alternate Bid Work Scope II
Entry Replacement S5
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace entry side deck per instructions on sheet S5.

Construction Notes:
• Existing wooden deck is assumed to be completely demolished to avoid performing additional structural shoring operations. If needed, sections of the wooden deck can be removed for the installation of the new concrete foundations while the deck replacement permits are in process. Shoring scheme outlined above (base bid) is included for dining area of the existing living space area of the house structure only.
• Due to temporary shoring installation under the existing house (living space/dining area/ceramic floor) structure, installation/removal of shoring may result in cracked walls, cracked floors, uneven floors finishes as well as other cosmetic damages. RWR is not including repair of same in this estimate and will not be responsible for such items.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise.
• Itemized prices are provided for illustrative purposes only and 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.

Exclusions
• Cost of plans, 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).
• Hardscaping or landscaping work.
• Any work on existing utilities including buried pipes.
• Waterproofing.
• Erosion control.
• Drainage work.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.

Read More →

Need underpinning to permanently stabilize home or level floors in Berkeley? Call 415-457-5658 for a prompt, reliable estimate from our experienced estimator. RWR has been installing underpinning in Berkeley for over 24 years. You will see our trucks and equipment working in Berkeley, Berkeley Hills, and Kensington.

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 drawings. The proposal consists of performing structural underpinning/replacement repairs to the existing deck and house foundation as per plans as well as the replacement of the existing wooden deck replacement as separately proposed below.
Scope of Work
I. – Foundation Underpinning A-S2 BASE BID
• Mobilize to jobsite. Demobilize.
• Supervision.
• Remove existing wooden deck and off-haul debris from site (see notes below).
• Install combination of post, driven pipe pile and crib towers with temporary beams to support main floor of house @ the dining area. Remove shoring system after house is re-supported on new perimeter and interior foundations. (Re-leveling not included in this base bid, see additional cost provided below).
• Drill and install a total of: (1) 24” diameter x 14 ft deep, (1) 24” diameter x 22 ft deep, (1) 18” diameter x 14 ft deep, (1) 18” diameter x 16 ft deep and (1) 18” diameter x 17 ft deep reinforced concrete piers as per sheet S2 layout and structural details on sheets S2, S3 & S4. Remove drilling spoils from site.
• Excavate for and install new reinforced concrete grade beams, tie beams and pier caps as per plans. Includes drilling and installing epoxy dowels to tie new to existing foundations.
• Off-haul related spoils from site.
• Re-install underpinning area 6×6 posts and 1212HT straps below the dining area as per plans as well as (2) deck supports and all other embedments related to the future re-construction of the new wooden deck (see additional price provided below).
• Install drainage system as shown on drawings.
• Clean up site and remove RWR construction debris from site.

Alternate Bid Work Scope I
Wooden Deck Replacement
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace existing wooden deck (to same shape/form) per structural details provided using pressure treated lumber for the framing structure, Simpson brackets CC66 and attachments as per plans, 2×10 joist for framing and Con hart B (higher grade) redwood lumber for finish product on decking materials, railing, wooden landing and stairs.

Alternate Bid Work Scope II
Entry Replacement S5
• This alternate must be performed at the same mobilization as “main bid scope”.
• Replace entry side deck per instructions on sheet S5.

Construction Notes:
• Existing wooden deck is assumed to be completely demolished to avoid performing additional structural shoring operations. If needed, sections of the wooden deck can be removed for the installation of the new concrete foundations while the deck replacement permits are in process. Shoring scheme outlined above (base bid) is included for dining area of the existing living space area of the house structure only.
• Due to temporary shoring installation under the existing house (living space/dining area/ceramic floor) structure, installation/removal of shoring may result in cracked walls, cracked floors, uneven floors finishes as well as other cosmetic damages. RWR is not including repair of same in this estimate and will not be responsible for such items.

Qualifications and Clarifications
• Job is bid as package unless agreement to otherwise.
• Itemized prices are provided for illustrative purposes only and 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.

Exclusions
• Cost of plans, 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).
• Hardscaping or landscaping work.
• Any work on existing utilities including buried pipes.
• Waterproofing.
• Erosion control.
• Drainage work.
• Winterization.
• Excavation of hazardous materials, underground tanks, or materials unacceptable at dumps.
• Architectural concrete or type of special concrete finish product.

Read More →