ASTM F1144-19

Standard Specification for Manhole Cover Assembly, Bolted, Semi-Flush, Oiltight and Watertight, Hinged

ABSTRACT
This specification covers the requirements for the design and construction of a semi-flush, oiltight, and watertight bolted hinged manhole cover assembly for use in deck or bulkheads subjected to lateral pressures such as resulting from vehicle loads or hydrostatic pressure. Not covered by this specification are the design requirements for manhole cover assembly subjected to primary or cyclic loads and certain hazardous cargos. The manhole cover assembly covered by this specification are classified into various types (Types I and II based on size of access opening), grades (Grades 1-3 based on the thickness of the cover plate), and classes (Classes A and B based on surface finish). The assembly shall be comprised of covers, mounting rings, gaskets, studs, washers, hinge assemblies, and nuts. The components shall be manufactured from carbon structural steel (plate for the cover, ring, hinge pad, and hinge blade), steel (round bar for hinge pin), ordinary steel (welded studs), and yellow brass (washers, heavy hex nuts, and cotter pin). The assembly shall be free of splinters, sharp edges, burrs, projections, and weld splatters, and shall have a Class A finish. Pressure and tightness tests shall be performed and shall conform to the requirements specified.
SCOPE
1.1 This specification provides design and construction criteria for a semi-flush, oiltight and watertight bolted hinged manhole cover assembly.  
1.2 The manhole cover assemblies depicted on this specification are for use in decks or bulkheads requiring oiltight and watertight covers that are not required to be completely flush. Manhole cover assemblies shall be complete with covers, mounting rings, gaskets, studs, washers, hinge assemblies, and nuts.  
1.3 Handles, if required, shall be as specified in the ordering information.  
1.4 Values stated in inch-pound units are to be regarded as standard.  
1.5 This standard is not applicable to certain hazardous cargos. (See 46 CFR 153.254 and 46 CFR 154.340.)  
1.6 This specification provides design and construction for manhole cover assemblies subjected to lateral pressures such as resulting from vehicle loads or hydrostatic pressures. Where manhole cover assemblies are subjected to primary or cyclic loads, other reinforcement or construction criteria may be necessary to integrate the manhole assembly with the required structural reinforcement for openings in decks or bulkheads. Design of the manhole cover assembly for primary or cyclic loads is beyond the scope of this specification.  
1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 28-Feb-2019
• ICS: 47.020.10 - Hulls and their structure elements
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.03 - Outfitting and Deck Machinery

Relations

• Replaces: ASTM F1144-98(2012) - Standard Specification for Manhole Cover Assembly, Bolted, Semi-Flush, Oiltight and Watertight, Hinged
• Effective Date: 01-Mar-2019
• Refers: ASTM B36/B36M-23 - Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
• Effective Date: 01-Oct-2023
• Refers: ASTM B36/B36M-18 - Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
• Effective Date: 01-Oct-2018
• Refers: ASTM A575-96(2018) - Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
• Effective Date: 01-Sep-2018
• Refers: ASTM A131/A131M-14 - Standard Specification for Structural Steel for Ships
• Effective Date: 01-Oct-2014
• Refers: ASTM A131/A131M-13 - Standard Specification for Structural Steel for Ships
• Effective Date: 01-Nov-2013
• Refers: ASTM B36/B36M-13 - Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
• Effective Date: 01-Oct-2013
• Refers: ASTM F783-88(2013) - Standard Specification for Staple, Handgrab, Handle, and Stirrup Rung
• Effective Date: 01-May-2013
• Refers: ASTM A575-96(2013)e1 - Standard Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
• Effective Date: 01-Apr-2013
• Refers: ASTM A36/A36M-12 - Standard Specification for Carbon Structural Steel
• Effective Date: 01-Nov-2012
• Refers: ASTM B36/B36M-08a - Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
• Effective Date: 01-Oct-2008
• Refers: ASTM A36/A36M-08 - Standard Specification for Carbon Structural Steel
• Effective Date: 15-May-2008
• Refers: ASTM F783-88(2008) - Standard Specification for Staple, Handgrab, Handle, and Stirrup Rung
• Effective Date: 01-May-2008
• Refers: ASTM B36/B36M-08 - Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar
• Effective Date: 01-Apr-2008
• Refers: ASTM A131/A131M-08 - Standard Specification for Structural Steel for Ships
• Effective Date: 01-Mar-2008

Overview

ASTM F1144-19 defines the standard specification for bolted, semi-flush, oiltight, and watertight hinged manhole cover assemblies. Developed by ASTM International, this standard specifies design, material, construction, and inspection requirements for manhole cover assemblies installed in deck or bulkhead structures that may be subjected to lateral pressures such as vehicle loads or hydrostatic forces. The focus is on marine applications, where maintaining watertight and oiltight integrity is critical, but the requirements do not include assemblies intended for primary or cyclic loads or those exposed to hazardous cargo.

Key Topics

• Scope and Classification

  • Cover assemblies designed for decks or bulkheads where semi-flush, oiltight, and watertight characteristics are needed.
  • Assemblies are classified by:
    • Type: Based on access opening size (Type I: 15x23 in., Type II: 18x24 in.).
    • Grade: Based on cover plate thickness (Grade 1: 1/4 in., Grade 2: 3/8 in., Grade 3: 1/2 in.).
    • Class: Based on surface finish (Class A: painted/coated; Class B: galvanized).

• Design and Material Requirements

  • Mandates complete assemblies: cover, mounting rings, gaskets, studs, washers, hinge assemblies, and nuts.
  • Specifies use of carbon structural steel, standard steel bars, ordinary steel for studs, and yellow brass for washers, nuts, and cotter pins.
  • Prohibits hazardous sharp edges, splinters, burrs, or weld spatters. Class A finish implies abrasive blasting and coating; Class B finish requires galvanization.

• Performance and Inspection

  • Assemblies must be tested at pressures 1.5 times the designated working pressure for at least 5 minutes without leakage or deformation.
  • Each unit or randomly selected samples from a lot are subjected to dimensional, pressure, and tightness inspections.

• Marking and Packaging

  • Each assembly must be marked with identification details including ASTM designation, type, grade, class, manufacturer’s identity, and order numbers.
  • Packaging must ensure protection during transportation and storage, with special provisions for government (DoD) or overseas shipments.

Applications

• Marine and Shipbuilding
  • Essential for watertight and oiltight access in decks and bulkheads of vessels.
  • Used in cargo holds, fuel tanks, ballast compartments, and machinery spaces where robust sealing against oils and water is necessary.
• Industrial Tanks and Storage
  • Provides secure, tested entry points for tanks in environments requiring containment of liquids or oils.
• Infrastructure and Transport
  • Suitable for structures where manhole covers may be exposed to mechanical loads from vehicles or hydrostatic pressures.

Related Standards

When implementing or specifying manhole cover assemblies according to ASTM F1144-19, consider compatibility and compliance with the following standards:

• ASTM A36/A36M - Carbon structural steel specifications
• ASTM A131/A131M - Structural steel for ships
• ASTM A153/A153M - Zinc coating (hot-dip galvanizing) for iron and steel hardware
• ASTM D2000 - Classification system for rubber products (gasket materials)
• ANSI/ASME B1.1 & B18.2.1 - Screw threads and bolt/nut dimensions
• SSPC SP-10 - Surface preparation for coatings (near-white metal blast cleaning)
• ABS Rules for Building and Classing Steel Vessels - Maritime structural requirements
• US Code of Federal Regulations (46 CFR 153.254, 154.340) - Hazardous cargo applications (excluded from this standard)

For lasting watertight and oiltight performance in demanding marine and industrial environments, ASTM F1144-19 provides a reliable framework for quality, safety, and regulatory compliance in manhole cover assemblies.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F1144 −19 An American National Standard
Standard Specification for
Manhole Cover Assembly, Bolted, Semi-Flush, Oiltight and
Watertight, Hinged
This standard is issued under the fixed designation F1144; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2.1 ASTM Standards:
1.1 This specification provides design and construction
A36/A36M Specification for Carbon Structural Steel
criteria for a semi-flush, oiltight and watertight bolted hinged
A131/A131M Specification for Structural Steel for Ships
manhole cover assembly.
A153/A153M Specification for Zinc Coating (Hot-Dip) on
1.2 The manhole cover assemblies depicted on this specifi-
Iron and Steel Hardware
cation are for use in decks or bulkheads requiring oiltight and
A575 Specification for Steel Bars, Carbon, Merchant
watertight covers that are not required to be completely flush. Quality, M-Grades
Manhole cover assemblies shall be complete with covers, B36/B36M Specification for Brass Plate, Sheet, Strip, And
Rolled Bar
mounting rings, gaskets, studs, washers, hinge assemblies, and
D2000 Classification System for Rubber Products in Auto-
nuts.
motive Applications
1.3 Handles, if required, shall be as specified in the ordering
F783 Specification for Staple, Handgrab, Handle, and Stir-
information.
rup Rung
2.2 ASME Standards:
1.4 Values stated in inch-pound units are to be regarded as
B1.1 Unified Inch Screw Threads
standard.
Y14.5M Dimensioning and Tolerancing
1.5 This standard is not applicable to certain hazardous
B18.2.1 Square, Hex, Heavy Hex, and Askew Head Bolts
cargos. (See 46 CFR 153.254 and 46 CFR 154.340.)
and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag
Screws (Inch Series)
1.6 This specification provides design and construction for
2.3 ABS Standard:
manholecoverassembliessubjectedtolateralpressuressuchas
Rules for Building and Classing Steel Vessels
resulting from vehicle loads or hydrostatic pressures. Where
2.4 SSPC Standard:
manhole cover assemblies are subjected to primary or cyclic
SP-10 Surface Preparation Specification No. 10
loads, other reinforcement or construction criteria may be
2.5 Code of Federal Regulations (CFR) Standard:
necessary to integrate the manhole assembly with the required
46 CFR Title 46 of the Code of Federal Regulations
structural reinforcement for openings in decks or bulkheads.
Design of the manhole cover assembly for primary or cyclic
3. Terminology
loads is beyond the scope of this specification.
3.1 Definitions:
3.1.1 manhole, n—accessway located in a tank structure.
1.7 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Development of International Standards, Guides and Recom-
Standards volume information, refer to the standard’s Document Summary page on
mendations issued by the World Trade Organization Technical
the ASTM website.
Barriers to Trade (TBT) Committee.
Available from American Society of Mechanical Engineers (ASME), ASME
International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
www.asme.org.
Available from American Bureau of Shipping (ABS), ABS Plaza, 1701 City
This specification is under the jurisdiction of ASTM Committee F25 on Ships Plaza Dr., Spring, TX 77389, http://www.eagle.org.
and Marine Technology and is the direct responsibility of Subcommittee F25.03 on Available from Society for Protective Coatings (SSPC), 800 Trumbull Dr.,
Outfitting and Deck Machinery. Pittsburgh, PA 15205, http://www.sspc.org.
Current edition approved March 1, 2019. Published April 2019. Originally Available from U.S. Government Printing Office, Superintendent of
approved in 1988. Last previous edition approved in 2012 as F1144 – 98 (2012). Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://
DOI: 10.1520/F1144-19. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1144−19
3.1.2 semi-flush, n—refers to the placement of the hinged 6.7 Cotter pin to be in accordance with Specification B36/
1 3
plate over the ringed opening (without coaming). B36M yellow brass, ⁄8 by 1 ⁄4 in. (3.2 by 44.5 mm) long.
6.8 Unless otherwise specified in ordering information,
4. Classification
gasket to be rubber, ⁄16 in. (4.8 mm) thick, 50 6 5 durometers
4.1 Type I—15- by 23-in. (381- by 584-mm) size of access
in accordance with Classification D2000 5BC507 A14 E034.
opening.
For manhole cover assemblies for government application, see
4.2 Type II—18- by 24-in. (457- by 610-mm) size of access Annex A2 for type of gasket.
opening.
6.9 Welding to conform to the latest issue of American
4.3 Grade 1— ⁄4-in. (6.4-mm) thick cover plate. Bureau of Shipping Rules or other such classification society
rules as may be applicable.
4.4 Grade 2— ⁄8-in. (9.5-mm) thick cover plate.
6.10 Details of bolted manholes are shown in Fig. 1.
4.5 Grade 3— ⁄2-in. (12.7-mm) thick cover plate.
4.6 Class A Manhole Cover Assemblies—Shall be abrasive
7. Dimensions
blasted to near white metal in accordance with SSPC SP-10
7.1 Dimensions of manhole shall be as indicated in Table 1.
and a commercial marine quality nonhazardous corrosion-
7.2 For plating up to and including ⁄4-in. (6.4-mm)
inhibiting and oil-resistant primer coating be applied for
thickness, use cover plate of ⁄4-in. (6.4-mm) thickness. Plating
protection for a period of one year during shipping and in
1 3
over ⁄4-in. (6.4-mm) up to and including ⁄8-in. (9.5-mm)
shipyard handling.
thickness; use cover plate of ⁄8-in. (9.5-mm) thickness. Plating
4.7 Class B Manhole Cover Assemblies—Shall be galva-
3 1
over ⁄8-in. (9.5-mm) thickness, use cover plate of ⁄2-in.
nized in accordance with Specification A153/A153M.
(12.7-mm) thickness.
5. Ordering Information
8. Finish
5.1 The purchasers ordering information shall include the
8.1 Items produced under this specification shall be free of
following:
splinters, sharp edges, burrs, projections, and weld spatters.
5.1.1 ASTM designation and date.
5.1.2 Type (see 4.1 and 4.2). 8.2 Unless otherwise specified in ordering data, items shall,
5.1.3 Grade (see 4.3, 4.4, and 4.5). after fabrication, have a Class A finish.
5.1.4 Class (see 4.6 and 4.7).
9. Sampling
5.1.5 Quantity.
5.1.6 Remarks—Handles (are/are not) required.
9.1 For orders for one or two manhole cover assemblies,
5.1.7 Approval—Classification society approval (is/is not)
each manhole assembly shall be inspected.
required.
9.2 For orders for three to ten manhole cover assemblies,
5.1.8 Gasket, if other than specified (see 6.8).
two manhole cover assemblies shall be selected at random. If
any one of them fails to meet requirements, then all manhole
6. Materials and Manufacture
cover assemblies in the order shall be inspected.
6.1 Plate for the cover, ring, hinge pad and hinge blade shall
9.3 For orders for more than ten manhole cover assemblies,
be in accordance with Specification A36/A36M or A131/
they shall be separated into groups of ten (or fraction thereof)
A131M steel.
for sampling purposes.
6.2 Round bar for the handle shall be in accordance with
Specification F783, Type A.
10. Inspection and Testing
6.3 Round bar for the hinge pin shall be of Specification
10.1 Responsibility—Unless otherwise specified in the
A575 steel.
order, the manufacturer is responsible for the performance of
6.4 Weldedstudsshallbe ⁄4 in.(19.1mm)—10UNC-2Aby all inspection and testing specified herein. The manufacturer
may use his own facilities or any commercial facility accept-
1 ⁄4 in. (44.5 mm) long and manufactured of ordinary steel to
commercialstandards.Threadsshallbethecoarsethreadseries able to the purchaser. The purchaser reserves the right to
in accordance with the latest issue of ASME B1.1. perform any of the inspections and tests set forth where such
are deemed necessary to assure that supplies conform to
6.5 Washers shall be ASME B18.2.1 Type A, ⁄4-in. (19.1-
prescribed requirements. Nonconforming manhole cover as-
mm) washer, 2-in. (50.8-mm) by 0.148-in. (3.8-mm) thick
semblies shall not be offered for delivery.
standard flat manufactured of yellow brass, in accordance with
Specification B36/B36M. 10.2 Inspection—The dimensions of the manhole cover
assembly and its components shall be checked to ensure that
6.6 Heavy hex nuts shall be ⁄4 in. (19.1 mm)—10 UNC-2B
they are within specified tolerances.
and manufactured of yellow brass, in accordance with Speci-
fication B36/B36M. Threads in nuts shall conform to the 10.3 Test Methods—Each manhole cover assembly shal
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1144 − 98 (Reapproved 2012) F1144 − 19 An American National Standard
Standard Specification for
Manhole Cover Assembly, Bolted, Semi-Flush, Oiltight and
Watertight, Hinged
This standard is issued under the fixed designation F1144; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification provides design and construction criteria for a semi-flush, oiltight and watertight bolted hinged manhole
cover assembly.
1.2 The manhole cover assemblies depicted on this specification are for use in decks or bulkheads requiring oiltight and
watertight covers that are not required to be completely flush. Manhole cover assemblies shall be complete with covers, mounting
rings, gaskets, studs, washers, hinge assemblies, and nuts.
1.3 Handles, if required, shall be as specified in the ordering information.
1.4 Values stated in inch-pound units are to be regarded as standard.
1.5 This standard is not applicable to certain hazardous cargos. (See 46CFR 46 CFR 153.254 and 46CFR 46 CFR 154.340.)
1.6 This specification provides design and construction for manhole cover assemblies subjected to lateral pressures such as
resulting from vehicle loads or hydrostatic pressures. Where manhole cover assemblies are subjected to primary or cyclic loads,
other reinforcement or construction criteria may be necessary to integrate the manhole assembly with the required structural
reinforcement for openings in decks or bulkheads. Design of the manhole cover assembly for primary or cyclic loads is beyond
the scope of this specification.
1.7 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A36/A36M Specification for Carbon Structural Steel
A131/A131M Specification for Structural Steel for Ships
A153/A153M Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware
A575 Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
B36/B36M Specification for Brass Plate, Sheet, Strip, And Rolled Bar
D2000 Classification System for Rubber Products in Automotive Applications
F783 Specification for Staple, Handgrab, Handle, and Stirrup Rung
2.2 ANSIASME Standards:
B1.1 Unified Inch Screw Threads
Y14.5M Dimensioning and Tolerancing
B18.2.1 Square and Hex Bolts and Screws, Inch SeriesSquare, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex,
Hex Flange, Lobed Head, and Lag Screws (Inch Series)
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.03 on
Outfitting and Deck Machinery.
Current edition approved June 1, 2012March 1, 2019. Published October 2012April 2019. Originally approved in 1988. Last previous edition approved in 20072012 as
F1144 – 98 (2007).(2012). DOI: 10.1520/F1144-98R12.10.1520/F1144-19.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, Society of Mechanical Engineers (ASME), ASME International Headquarters,
Two Park Ave., New York, NY 10036, http://www.ansi.org.10016-5990, http://www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1144 − 19
2.3 ABS Standard:
Rules for Building and Classing Steel Vessels
2.4 Steel Structures Painting Council SSPC Standard:
SP-10 Surface Preparation Specification No. 10
2.5 Code of Federal Regulations (CFR) Standard:
CFR 4646 CFR Title 46 of the Code of Federal Regulations
3. Terminology
3.1 Definitions:
3.1.1 manhole—manhole, n—accessway located in a tank structure.
3.1.2 semi-flush—semi-flush, n—refers to the placement of the hinged plate over the ringed opening (without coaming).
4. Classification
4.1 Type I—15- by 23-in. (381- by 584-mm) size of access openingopening.
4.2 Type II—18- by 24-in. (457- by 610-mm) size of access openingopening.
4.3 Grade 1— ⁄4-in. (6.4-mm) thick cover plateplate.
4.4 Grade 2— ⁄8-in. (9.5-mm) thick cover plateplate.
4.5 Grade 3— ⁄2-in. (12.7-mm) thick cover plateplate.
4.6 Class A Manhole Cover Assemblies—Shall be abrasive blasted to near white metal in accordance with SSPC SP-10 and a
commercial marine quality nonhazardous corrosion-inhibiting and oil-resistant primer coating be applied for protection for a period
of one year during shipping and in shipyard handling.
4.7 Class B Manhole Cover Assemblies—Shall be galvanized in accordance with Specification A153/A153M.
5. Ordering Information
5.1 The purchasers ordering information shall include the following:
5.1.1 ASTM designation and date.
5.1.2 Type (see 4.1 and 4.2).
5.1.3 Grade (see 4.3, 4.4, and 4.5).
5.1.4 Class see ((see 4.6 and 4.7).
5.1.5 Quantity.
5.1.6 Remarks—Handles (are/are not) required.
5.1.7 Approval—Classification society approval (is/is not) required.
5.1.8 Gasket, if other than specified (see 6.8).
6. Materials and Manufacture
6.1 Plate for the cover, ring, hinge pad and hinge blade shall be in accordance with Specification A36/A36M or A131/A131M
steel.
6.2 Round bar for the handle shall be in accordance with Specification F783, Type A.
6.3 Round bar for the hinge pin shall be of Specification A575 steel.
3 3
6.4 Welded studs shall be ⁄4 in. (19.1 mm)—10 UNC-2A by 1 ⁄4 in. (44.5 mm) long and manufactured of ordinary steel to
commercial standards. Threads shall be the coarse thread series in accordance with the latest issue of ANSIASME B1.1.
6.5 Washers shall be ANSIASME B18.2.1 Type A, ⁄4-in. (19.1- mm) washer, 2-in. (50.8-mm) by 0.148-in. (3.8-mm) thick
standard flat manufactured of yellow brass, in accordance with Specification B36/B36M.
6.6 Heavy hex nuts shall be ⁄4 in. (19.1 mm)—10 UNC-2B and manufactured of yellow brass, in accordance with Specification
B36/B36M. Threads in nuts shall conform to the dimensions for coarse threads with tolerances prescribed in accordance with
ANSIASME B1.1. The nuts shall conform to dimensions prescribed in accordance with ANSIASME B18.2.1.
1 3
6.7 Cotter pin to be in accordance with Specification B36/B36M yellow brass, ⁄8 by 1 ⁄4 in. (3.2 by 44.5 mm) long.
Available from American Bureau of Shipping (ABS), ABS Plaza, 16855 Northchase Dr., Houston, TX 77060,1701 City Plaza Dr., Spring, TX 77389,
http://www.eagle.org.
Available from Society for Protective Coatings (SSPC), 40 24th St., 6th Floor, 800 Trumbull Dr., Pittsburgh, PA 15222-4656,15205, http://www.sspc.org.
Available from U.S. Government Printing Office, Superintendent of Documents, 732 N. Capitol St., NW, Washington, DC 20401-0001, http://www.access.gpo.gov.
F1144 − 19
6.8 Unless otherwise specified in ordering information, gasket to be rubber, ⁄16 in. (4.8 mm) thick, 50 6 5 durometers per in
accordance with Classification D2000 5BC507 A14 E034. For manhole cover assemblies for government application, see Annex
A2 for type of gasket.
6.9 Welding to conform to the latest issue of American Bureau of Shipping Rules or other such classification society rules as
may be applicable.
6.10 Details of bolted manholes are shown in Fig. 1.
7. Dimensions
7.1 Dimensions of manhole shall be as indicated in Table 1.
1 1 1
7.2 For plating up to and including ⁄4-in. (6.4-mm) thickness, use cover plate of ⁄4-in. (6.4-mm) thickness. Plating over ⁄4-in.
3 3 3
(6.4-mm) up to and including ⁄8-in. (9.5-mm) thickness; use cover plate of ⁄8-in. (9.5-mm) thickness. Plating over ⁄8-in. (9.5-mm)
thickness, use cover plate of ⁄2-in. (12.7-mm) thickness.
8. Finish
8.1 Items produced under this specification shall be free of splinters, sharp edges, burrs, projections, and weld spatters.
8.2 Unless otherwise specified in ordering data, items shall, after fabrication, have a Class A finish.
9. Sampling
9.1 For orders for one or two manhole cover assemblies, each manhole assembly shall be inspected.
9.2 For orders for three to ten manhole cover assemblies, two manhole cover assemblies shall be selected at random. If any one
of them fails to meet requirements, then all manhole cover assemblies in the order shall be inspected.
9.3 For orders for more than ten manhole cover assemblies, they shall be separated into groups of ten (or fraction thereof) for
sampling purposes.
10. Inspection and Testing
10.1 Responsibility—Unless otherwise specified in the order, the manufacturer is responsible for the performance of all
inspection and testing specified herein. The manufacturer may use his own facilities or any commercial facility acceptable to the
purchaser. The purchaser reserves the right to perform any of the inspections and tests set forth where such are deemed necessary
to assure that supplies conform to prescribed requirements. Nonconforming manhole cover assemblies shall not be offered for
delivery.
10.2 Inspection—The dimensions of the manhole cover assembly and its components shall be checked to ensure that they are
within specified tolerances.
10.3 Test Methods—Each manhole cover assembly shall be designed to the pressure listed in Table 1 and tested to a pressure
equal to 1.5 times the de
...