Foundation Repair – GJ MacRae Foundation Repair

Structural Underpinning and Basement Waterproofing (Brampton)

gjmacrae — Fri, 14 Jun 2024 04:44:17 +0000

Saw cut asphalt and excavate to footing. Excavate underpin by hand and clean underside of footing with wire brush. Apply masonry adhesive to underside of footing. Once underpin is carved and prepared, build and install timber forms to accommodate a positive concrete adhesion to the underside of existing footings (non-grout, overflow method) allowing for a void-less encapsulation of existing structure to fresh underpin. Fill forms with 25 MPa concrete until full and install needle vibrator. Once cured, remove timber forms.

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. Backfill and power tamp dirt.

Structural Underpinning and Basement Waterproofing (Brampton)

gjmacrae — Fri, 14 Jun 2024 04:41:01 +0000

Excavate underpin by hand and clean underside of footing with wire brush. Apply masonry adhesive to underside of footing. Once underpin is carved and prepared, build and install timber forms to accommodate a positive concrete adhesion to the underside of existing footings (non-grout, overflow method) allowing for a void-less encapsulation of existing structure to fresh underpin. Fill forms with 25 MPa concrete until full and install needle vibrator. Once cured, remove timber forms.

Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt.

Foundation Reinforcement with Helical Piles (Oakville)

gjmacrae — Fri, 14 Jun 2024 04:39:16 +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 rubberized membrane to repair area. Add a layer of mastic mesh, another layer of 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.

Block Foundation Wall Replacement (Mississauga)

gjmacrae — Fri, 14 Jun 2024 04:36:33 +0000

Excavate exterior walls by hand and install telescopic shoring to interior of joist work and shore up brick line with angle iron. Once structure is secured, excavate by hand to frost depth and remove existing foundation walls within repair area. Repair any damaged wooden joist work with fresh sistered timber and pour fresh concrete footing at frost depth.

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

Fasten drainage board from grade to footing. Backfill and power tamp soil within repair area and reinstall patio slabs. Remove interior shoring and remove and dump all debris. All labour and materials included.

Basement Waterproofing and Weeping Tile Replacement (Oakville)

gjmacrae — Fri, 14 Jun 2024 04:28:03 +0000

Lay down tarps and dig down to footing by hand in specified repair areas.

Remove and replace weeping tile system within repair areas 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 Grading (Milton)

gjmacrae — Fri, 14 Jun 2024 04:21:31 +0000

Remove all debris and obstructions in way of repair areas. Lay down tarps and dig down to footing by hand in specified repair areas.

Replace weeping tile system within repair areas and cover with 6″ of 3/4″ clear gravel. Backfill and power tamp dirt and regrade soil.

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.

Structural HSS Post Installation in Parkdale (Toronto)

gjmacrae — Fri, 14 Jun 2024 04:12:55 +0000

Remove all debris or obstructions in way of existing beam access. Fasten timber plankage to interior joist work and install vertical iron shoring along complete length of existing beam/load bearing wall. Slowly begin lifting structure off of existing interior load bearing wall 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 HSS posts. Fasten new vertical posts to IBEAM with approved hardware. Once post footings are cured, remove shoring and rest structure onto new post/footings installations. Remove and dump all debris.

Structural Underpinning and Footing Install (Mississauga)

gjmacrae — Fri, 14 Jun 2024 04:07:21 +0000

Form up proposed concrete footing and fill forms with 25 MPa concrete until full and install needle vibrator. Once cured, remove timber forms.

Bench Pinning Foundation Reinforcement (Hamilton)

gjmacrae — Fri, 14 Jun 2024 04:01:44 +0000

On interior of basement, prepare perimeter of repair area and remove all debris to clear access. Begin bench pinning sections around proposed interior foundation walls. Install angle of repose to engineered specifications and install vertical rebar (bent at a 90 degree) into existing footing/foundation walls as well as vertical rebar inserted into unexcavated ground at base of bench pin (leaving the underside of existing footing undisturbed in benching area). Install multiple levels of horizontal rebar into bench pins and tie into vertical rebar creating a mesh pattern. Once complete, form with timber and install 25 mPa concrete into forms. Vibrate with needle vibrator to ensure complete encapsulation of form. Once cured, remove forms. Repeat process until complete.

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