Burlington – GJ MacRae Foundation Repair

Block Foundation Replacement with Brick Shoring (Hamilton)

gjmacrae — Fri, 14 Jun 2024 04:18:29 +0000

Excavate exterior walls by hand and install telescopic shoring to interior of joist work. Once structure is secured, excavate by hand to frost depth and remove existing foundation walls within repair area. Repair any damaged wooden joistwork with fresh sistered timber and pour fresh concrete footing at frost depth to a dimension 20” x 8“.

Once footing is cured, rebuild foundation walls with 10” block from base of footing to underside of existing joistwork. Once complete, parge fresh foundation walls and let cure. Once cured, prime foundation wall and apply ruberized membrane waterproofing.

Fasten drainage board from grade to footing. Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt.

Inside Basement Waterproofing with Structural Underpin (Burlington)

gjmacrae — Fri, 14 Jun 2024 03:23:12 +0000

Break concrete 18″ back from foundation walls around the complete perimeter of repair area. Dig down to footings and remove debris.

Drill 1/2″ holes in cavities of blockwork and fasten drainage board to foundation wall using concrete anchors. Install a fresh 4″ perforated weeping tile system with filter cloth.

Connect fresh weeping tile system into existing drain works. Cover weeping tile with 3/4″ gravel and reinstall concrete floor.

Remove and dump all debris. All labour and materials included.

Foundation Reinforcement with Helical Piles (Burlington)

gjmacrae — Fri, 14 Jun 2024 03:06:02 +0000

Excavate area down to below footing. Shore in, if required, to provide safe work space. Cut footing at pier installation areas. Mount brackets. Install 6 helical piers to a depth of 10′. Secure piers to bracket.

If we are unable to achieve the required installation torque and it becomes necessary to install additional piers to a greater depth, there will be an additional charge for each additional 5 foot extension that is installed. The required axial capacities may not be achievable due to the soil conditions.

Geotechnical engineer to witness installation and confirm pile type, torque values, and produce letter of conformity in order for the town to close the permit permits to be provided by client.

Repair all cracks and masonry voids in foundation wall below grade. Prime wall and apply hydroshield rubberized membrane to repair area. Add a layer of mastic mesh, another layer of hydroshield rubberized membrane, a layer of 12m plastic and fasten drainage board to grade with termination straps and concrete anchors.

Repair weeping tile system and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt. Remove and dump all debris. All labour and materials included.

Outside Basement Waterproofing with Sump Pump Installation (Burlington)

gjmacrae — Fri, 14 Jun 2024 02:08:38 +0000

Saw cut asphalt and remove. Lay down tarps and dig down to footing by hand in specified repair areas.

Repair all cracks and masonry voids in foundation wall below grade. Once cured, apply AB-720-38 rubberized membrane to repair area. Add a layer of mastic mesh, another layer of AB-720-38 rubberized membrane, a layer of 12m plastic and fasten drainage board to grade with termination straps and concrete anchors.

Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. On inside of basement, break open existing concrete floor and excavate sump basin at a dimension of approximately 2.5ft x 2.5ft x 3ft. Line perimeter of basin with filter cloth and drill 1/2” holes around complete perimeter of basin. Install basin and surround with 3/4“ clear gravel.

Install a 1/3hp oil cooled sump pump and connect pump exhaust line. Reinstall concrete floor. On exterior, backfill and power tamp dirt. Remove and dump all debris.

All labour and materials are included.

Drywell and French Drain Install (Burlington)

gjmacrae — Fri, 14 Jun 2024 01:50:31 +0000

Mark out area location of drywell and lay down tarps. Strip sod and store nearby. Excavate area approximately 4′ square by 5′ deep. Dig trench to connect drainage line. Line pit with filter cloth. Install weeping tile coils.

Fill remaining void with 3/4″ clear gravel. Fold filter cloth over top of pit. Add soil to surface and put back sod. Dispose of excess soil. Rake jobsite level and dispose of debris. All labour and materials included.

Basement Underpinning with HSS Post Installations (Burlington)

gjmacrae — Wed, 12 Jun 2024 17:02:27 +0000

Begin underpinning sections around complete perimeter of interior foundation walls in increments. Excavate underpins by hand and clean underside of footing with wire brush. Apply masonry adhesive to underside of footings. Once underpins are prepared, build and install timber forms. Forms shall accommodate positive concrete adhesion to underside of existing footings (overflow method) and allow for a void less encapsulation of existing structure to fresh underpins achieving a complete watertight seal (non-grout installation method).

Fill forms with 25 MPa concrete and install needle vibrator. Once primary underpins are completed repeat process around entire interior perimeter, staggered into pre-determined sectionals. Once full interior perimeter detail is complete, inspected and certified, prepare for complete excavation of basement floor by hand. Frame up and fasten existing furnace to joist work.

Fasten timber plankage to interior joist work and install vertical iron shoring along complete length of existing beam. Slowly begin lifting structure off of existing interior load bearing beam and secure the above structural load. Once vertical structure and joist work is secured, remove existing beam/load bearing columns from basement and dispose.

Install fresh vertical iron posts and plates where applicable and pour specified concrete footings for posts. Fasten new vertical posts to existing wood beam with approved hardware. Once post footings are cured, remove shoring and rest structure onto new post/footings installations.

Begin underpinning excavation of debris through side access window directly to disposal bin. Once full excavation of underpinned sectionals has concluded, remove timber forms and install a complete 4” interior weeping tile system with filter cloth. Chip all loose debris from foundation walls and repair all masonry voids in existing foundation walls with S-type masonry. Once cured, fasten drainage board around complete interior perimeter from grade to base of fresh underpins.

Install sump box next to proposed services area (customer to determine preferred sump box location). Connect fresh 4“ weeping tile system into proposed sump box and install a 1/3hp cast iron oil cooled sump pump with check valve into sump basin. Install 8” of 3/4” clear gravel throughout entire basement floor. Once level and complete, proposed plumbing rough-in modifications are to take place (not included in below price).

Once full structural and plumbing inspections are completed, install a 4” concrete floor by hand and float level. Remove and dump all debris. All labour and materials included.