BUILDING INSPECTION WORKSHOP

1
BUILDING INSPECTION WORKSHOP

• Excavation Readiness To Construct Footings

2
AGENDA

• Notification
• Project Review
• Undisturbed Soil
• Minimum Depth
• Compacted Fill Part 4 Designed
  Footings/Foundations
• Form Layout Setbacks
• Footings
• Precautions
• Waterproofing
• Termite Control

3
Notification

• Notification to Building Inspection Division
  ResFax
• Telephone [phone]
• Fax [phone]
• Notification of Inspection Request must be before
  100pm to receive a next day inspection
• Reports do not substitute for inspections
  performed by the Building Standards Department
  building inspection staff

4
Project Review

• Permit drawings on site E02
• Ensure changes made to permit drawings are
  incorporated into project
• Frost Protection Plan during cold weather to
  avoid freezing of the soil concrete

• Not permitted to displace water within the
  footing with concrete pouring
• Pour footings continuously, if not possible
  provide a proper joint with 2 reinforcement bars
  E22

5
Undisturbed Soil9.12.2.1

• The Town of Markham Building Standards service
  level
• Is limited to a visual inspection of the
  excavation
• For conducting prescribed inspections does NOT
  include testing to determine the bearing capacity
  of soil for compliance with the building code
• The builder, owner and the person to whom this
  permit is issued to, shall assure themselves,
  that the soil bearing capacity of supporting the
  loads imposed from the proposed building and that
  the Town of Markham may not b relied on to
  certify soil properties
• Footings on solid, clean unfrozen ground E12,
  E14, E15, B0820
• 9.12.1.3
• Geotechnical engineer confirming design net
  bearing pressure of soil
• Excavation free of standing water E08, E25
• 9.12.1.2
• Bottom of excavation free of organic material E09
• 9.12.1.1
• Professional engineer report where high ground
  water level is suspected or water at the bottom
  of the excavation cannot be accounted for

6
Minimum Depths

• Elevation of footings are minimum 1.2 m below
  finished grade level provide the proper frost
  protection cover E16
• Ensure depth of footings has accounted for drains
  serving rear yard catch basins that the drains
  dont undermine the footings or are within the
  angle of repose E17
• Excavation inspection of deck post footings
  required

7
Compacted Fill Part 4 Designed
Footings/Foundations

• Submit professional geotechnical engineer
  reports
• Confirming compacted granular fill
• Confirming compacted fill capable of supporting
  the net bearing pressure
• Part 4 designed footings/foundations, i.e. Piles,
  grade beams, etc. (28), (27)

8
Form Layout Setbacks

• Footing form layout in accordance with permit
  plans E18, B0830, B0840
• If setbacks are suspect , a survey from an
  Ontario Land Surveyor (O.L.S.) will be required
  E19

9
Footings

• Confirm size, depth and design of strip footings
  E18
• Column pad thickness greater than strip footings
  E20
• Stepped footings have proper vertical rise
  horizontal distance between risers E21
• Reinforcement has been placed at the location
  where drains pass under the footings E23

• Sleeves used in forms for weeping tiles E24
• Footing thickness conforms to permit plans
• Bottom of excavation within the footing forms is
  cleaned of loose debris, soil water E06
• Angle of repose of the soil critical for existing
  footings and are affected by new excavations, the
  footings foundations must be designed by a
  professional engineer E07

10
Precautions

• Watch for excavation damage to services
  adjacent property, including public property
• Fencing hoarding installed when constructing
  adjacent to an occupied property E29

11
Waterproofing

• Consider the cause of wet conditions, if
  waterproofing is required submit a report from a
  professional engineer E30, (2)

12
Termite Control

• Certain areas of Markham are termite infested,
  check with your building inspector for required
  termite control action to be taken E31