Comment
B-01-03-01 Division B / 1.3.1.2.(1) In Favour
B-08-04-01 Division B / 8.4.1.2. Comment: Is there science behind the residential occupancies total daily design flow of 275 L per bedroom where there is a supply of pressurized water, or the 170 L per bedroom where there is no supply of pressurized water? If not, should that drop to 250 L to provide for 4-bedroom dwelling construction.
B-08-04-01 Division B / 8.4.2.1.; 8.4.2.3. In Favour
B-08-06-01 Division B / 8.6.1.3.(1.1) Not in Favour. Dosing ensures that the entire leaching bed receives effluent. We have had some gravity fed chamber systems used in filter beds fail within 5 years due to biomat forming at the chamber filter sand interface which prevents effluent leaching into the filter bed for treatment. Extending distribution pipe facilitates sufficient dosing to prevent premature failure. There is a safety factor when dosing is involved.
B-08-06-02 Division B / 8.6.2.2.(2) In Favour. BMEC Authorization needs to be removed from the Ontario Building Code. Class 6 systems approved under the Ministry of Environment legislation are not operated or maintained under legislation. The condition of these existing sewage systems is not monitored or known. Tiny leaching beds used for these systems are slowly being upgraded throughout the province, but many are still in use today and are not adequately treating sewage in the same manner as they were initially installed to do. One standard needs to be implemented and adhered to and that is CAN/BNQ 3680-600.
B-08-07-01 Division B / 8.7.1.2.(1) In Favour
B-08-07-02, B-08-07-03, B-08-07-04 Ref "low profile " model products. No Comment
B-08-07-05 Division B / 8.7.5.3.(1), (2) Comment: The lines of distribution pipes or leaching chambers shall be evenly spaced over the surface of the filter medium to which the sanitary sewage is applied with the outer most distribution pipe or leaching chamber not more than one half of the centerline spacing and not exceeding 600mm, i.e. 600 mm only addresses 1.2 m centerline spacing, 300 mm would address 600 mm centers.... I think the point of this change is allowing for a full centre on the outside perimeter from the distribution pipe. Are we in agreement with allowing for that? (i.e. 1.2 m o.c. would allow 1.2 m around the perimeter for filter area)
B-08-07-06 Division B / 8.7.5.3.(6), (7) Comment. (6) The base of the filter medium shall extend to a thickness of at least 250 mm over an area meeting the requirements of the following formula..... Thousands of filter beds are in existence with 250 mm of expanded contact filter sand with no issue.
(7)(b) over an area that is not less than the value determined by the formula, A = QT/400. Loading Rate calculations are provided in Table 8.7.4.1. If this change is adopted the loading rate requirement will need to be addressed / removed.
B-08-07-07 Division B / 8.7.7.1.(4), (5) In Favour
B-08-07-08 Division B / 8.7.7.1.(9) In Favour. Open bottom treatment units with minimum horizontal clearances to the shed prevented the installation of Class 5 sewage system in the past.
B-08-07-09 Division B / 8.7.9. In Favour
B-08-07-09 Division B / 8.9.2.4.(1) In Favour
Submitted December 8, 2022 10:13 AM
Comment on
Proposed Changes to Sewage Systems (and Energy Efficiency) for the Next Edition of Ontario’s Building Code
ERO number
019-6211
Comment ID
80700
Commenting on behalf of
Comment status