ONTARIO
PROVINCIAL
STANDARD
SPECIFICATION
METRIC
OPSS 1851
DECEMBER 1984
MATERIAL SPECIFICATION FOR
MISCELLANEOUS METALS
TABLE OF CONTENTS
1851.01
SCOPE
1851.02
REFERENCES
1851.03
Not Used
1851.04
SUBMISSION AND DESIGN REQUIREMENTS
1851.04.01
.02
.03
.04
.05
.06
General
Manhole and Chamber Steps
Screws, Bolts and Anchors
Open Gratings and Frames
Safety Gratings
Ladders
1851.05
MATERIALS
1851.05.01
.02
.03
General
Bolts and Anchors
Manhole or Chamber Steps
1851.05.03.01
.02
Steel Steps
Aluminum Steps
1851.05.04
Safety Chains
1851.06
Not Used
1851.07
PRODUCTION
1851.07.01
.02
.03
Workmanship
Joints
Screws and Bolts
1851.08
Not Used
1851.09
Not Used
1851.10
Not Used
Page 1
Rev. Date: 12/1984 OPSS 1851
1851.01
SCOPE
This specification covers the requirements for all miscellaneous steel, aluminum, cast iron and other metal
work required and includes anchor bolts, washers, nuts, wall castings, sleeves, anchors, screws, bolts and
other fastenings.
1851.02
REFERENCES
This specification refers to the following standards, specifications or publications:
Ontario Provincial Standard Drawings:
OPSD 404.01
OPSD 404.02
Aluminum Safety Grating for Square Manholes
Aluminum Safety Grating for Circular Manholes
Canadian Standards Association Standards:
G30.12-M 1977 - Billet Steel Bars for Concrete Reinforcement
G30.16-M 1977 - Weldable Low Alloy Steel Deformed Bars for Concrete Reinforcement
HA Series-M1980 - CSA Standards for Aluminum and Aluminum Alloys
G164-M1981 - Hot Dip Galvanizing of Irregularly-Shaped Articles
W59-1977 - Welded Steel Construction (Metal-Arc Welding)
American Society for Testing and Materials Standards:
C478 M-80 - Precast Reinforced Concrete Manhole Sections
1851.04
SUBMISSION AND DESIGN REQUIREMENTS
1851.04.01
General
The Contractor shall submit shop drawings of all steel and aluminum work, checkered plates and gratings,
etc., for review before fabrication is commenced. The Engineer's failure to note errors, omissions or
modifications on the shop drawings shall not be construed as approval of such errors, omissions or
modifications. Permission for modifications shall be obtained in writing.
Joints shall be as strong and rigid as the adjoining sections.
1851.04.02
Manhole and Chamber Steps
Manhole or chamber steps shall be designed according to the requirements of ASTM C 478 M.
Manhole or chamber steps shall be subjected to a horizontal load of 1.3 kN applied on the tread over the
width of 90 mm, next to the point where the step turns into the wall to form the anchorage.
For acceptance of the steps being tested, the following criteria shall apply:
1. The step shall remain solidly embedded upon completion of the horizontal load test.
2. There shall be no cracking or fracturing of the step, nor spalling of the concrete.
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Rev. Date: 12/1984 OPSS 1851
3. The permanent set sustained by the step shall be 6 mm or less.
4. If the installed step, tested as above, fails to conform to the test requirements two other steps, of the
same type, shall be tested. The two steps subsequently tested shall meet the requirements of this
specification.
The test shall be performed by the manufacturer at the manufacturer's plant and the Engineer shall be
notified in writing at least 72 hours before the test is carried out. In the event that the Engineer is unable to
be present during the test, the manufacturer shall provide an affidavit affirming that the test was carried out,
and that the criteria specified in this section were met.
1851.04.03
Screws, Bolts and Anchors
Screws or bolts used for connecting parts shall have countersunk heads.
Bolts shall be used only where necessary for field connections except where shown, and shall be provided
with lock washers. All other connections shall be welded in conformity with CSA Standard W59.
Except as otherwise specified or ordered, the end of anchor bolts which are to be embedded in concrete
shall be bent at right angles and the bent portion shall be an additional 75 mm long.
1851.04.04
Open Gratings and Frames
Gratings and frames shall be aluminum.
Gratings shall be of the standard rivetted design with clear spacing between bearing bars not exceeding
30 mm or interlocked cross bars with clear spacing between bearing bars not exceeding 20 mm. All bearing
bars shall be 5 mm thick with 5 mm cross bars.
All grating sections shall have 5 mm thick border bars welded to the ends of bearing bars and shall be of the
same stock depth as the bearing bars. Welds shall be full depth of the bar and at least at every third
bearing bar.
Frames to carry the gratings shall be of suitable size angles to fit the gratings.
Gratings shall be rated at a uniformly distributed load of 12 kPa. Deflection with a concentrated load of
90 kg shall not exceed 1/160 of the span.
1851.04.05
Safety Gratings
Safety gratings shall conform to the requirements of OPSD 404.01 or OPSD 404.02.
1851.04.06
Ladders
Ladders shall be of all-welded aluminum construction with 12 mm x 50 mm stringers and 19 mm x 22 mm
rungs with treads. The stringers shall be spaced at least 400 mm apart and all rungs shall be at 300 mm
centres.
Anchorage pieces shall be provided, welded to the stringers, at the top and bottom of each ladder and at
intermediate points for a spacing of not more than 2 m. Anchor bolts shall be 16 mm diameter by 150 mm
long and shall be of stainless steel.
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Rev. Date: 12/1984 OPSS 1851
1851.05
MATERIALS
1851.05.01
General
All materials shall be reviewed by the Engineer before being incorporated in the work.
1851.05.02
Bolts and Anchors
Studs, taps, machine and anchor bolts shall be of best quality aluminum, stainless steel or refined bar steel.
Hexagon nuts of the same quality of metal as the bolts shall be used. All threads shall be clean cut.
All anchor bolts in concrete and brick shall be steel and shall be hot-dip galvanized except where specified
to be stainless steel.
1851.05.03
Manhole or Chamber Steps
1851.05.03.01
Steel Steps
Steel steps shall be made from deformed steel bars conforming to the requirements of CSA G30.12-M or
G30.16-M, and shall be hot-dip galvanized according to CSA G164-M to provide a zinc coating of not less
than 600 g/m2. The carbon content of the steel shall not exceed 0.25%.
1851.05.03.02
Aluminum Steps
Aluminum steps shall be made from materials conforming to the requirements of CSA HA Series.
1851.05.04
Safety Chains
Safety chains shall be made of hot-dipped galvanized steel, and have an approved stainless steel safety
snap at one end. Chains shall have links 20 mm long with a cross-section of 5 mm.
1851.07
PRODUCTION
1851.07.01
Workmanship
Miscellaneous metal work shall be fabricated true to detail, with clean, straight, sharply defined profiles.
Metals shall have smooth finished surfaces except where otherwise specified.
1851.07.02
Joints
Welded joints shall be continuously welded or spot welded as specified. Faces of welds shall be flush and
ground smooth.
1851.07.03
Screws and Bolts
The ends of screws and bolts exposed to view shall be neatly clipped off flush and filed smooth.
Page 4
Rev. Date: 12/1984 OPSS 1851