Precast Concrete Products
Maintenance Hole Box Chambers - Ottawa
Available at Ayr and Carp
Box Name Inside
Dimensions
Outside Dimensions Top Slap
Thickness
Bottom Slap
Thickness
Wall Thickness
(W)
A B
mm mm mm mm mm mm mm
M-3-3 914 x 914 1218 1218 152 152 152
M-4 1219 x 1219 1677 1677 229 229 229
M-5 1524 x 1829 1982 2287 229 229 229
M-5.5 1829 x 1829 2287 2287 229 229 229
M-6.5 1829 x 2438 2287 2896 229 229 229
M-7.5 1829 x 3048 2287 3506 229 229 229
M-8 2438 x 2438 2896 2896 254 254 229
M-9 2438 x 3048 2896 3506 254 254 229
M-9.5 3048 x 3048 3506 3506 254 254 229
M-10 2438 x 3810 2896 4268 254 254 229
M-11 3048 x 3810 3506 4268 254 254 229
M-12 3810 x 3810 4260 4260 254 254 229
M-13 2438 x 4270 2896 4728 254 254 229
M-14 3048 x 4270 3506 4728 254 254 229
M-15 3810 x 4270 4728 5186 300 300 229
Notes
  1. Manufactured in accordance with OPSS 1351.
  2. Top Section heights at .150m increments. Bottom section heights at .150m increments.
  3. Click here for 1200mm tapered top details.
  4. Maintenance hole steps are circular hollow aluminum as per OPSD 405.010.
  5. All dimensions are in millimeters unless otherwise shown.