ASTM F1099M-18

Standard Specification for Rat Guards, Ship’s (Metric)

ABSTRACT
This specification covers the materials, dimensions, and assembly of steel and aluminum rat guards intended to prevent rats from boarding ships by way of mooring lines. Rat guards shall be classified into three types, namely: Type I, Type II, and Type III. Type I rat guards shall be made of the prescribed aluminum-alloy sheet metal; Type II rat guards shall be made of the prescribed galvanized sheet steel; and Type III rat guards shall be made of either of these specified materials. Types I and II rat guards shall be provided with the following: hinge bolt, guide and tie rope, and grommet. Type III rat guards shall consist of two half disks and two half tapered sleeves and the hinge bolt provided with each rat guard shall consist of a commercial hexagon head bolt, nut, and washer, all made of corrosion resistant steel. The dimensional requirements such as thickness of disk, sleeve, and guide for galvanized steel or aluminum sleeve of Type III rat guard are specified. Type I and Type II rat guard configurations and Type III rat guard assembly are detailed and illustrated.
SCOPE
1.1 This specification covers the materials, dimensions, and assembly of steel and aluminum rat guards.  
1.2 Rat guards are intended to prevent rats from boarding ships by way of mooring lines.  
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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: Historical
• Publication Date: 31-Mar-2018
• ICS: 47.020.85 - Cargo spaces
• Technical Committee: F25 - Ships and Marine Technology
• Drafting Committee: F25.07 - General Requirements

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F1099M − 18 An American National Standard
Standard Specification for
1
Rat Guards, Ship’s (Metric)
This standard is issued under the fixed designation F1099M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 3.1.1 Type I—Multiple-line (doubling up), self-adjustable,
accommodating the mooring line combinations listed in Table
1.1 This specification covers the materials, dimensions, and
1.
assembly of steel and aluminum rat guards.
3.1.2 Type II—Single-line, self-adjustable, accommodating
1.2 Rat guards are intended to prevent rats from boarding
a single 5-mm wire to a 76-mm-diameter mooring line.
ships by way of mooring lines.
3.1.3 Type III—Conical shape with tapered, slotted sleeve.
Type III rat guards shall be of the following sizes: (a) 75 mm,
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this (b) 125 mm, and (c) 200 mm.
standard.
3.2 Types I and II rat guards (see 3.1.1 and 3.1.2) are
1.4 This standard does not purport to address all of the designed to be installed from the deck or pier without a person
physically coming in contact with the mooring lines or hawser,
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- by lowering and positioning the guards away from the ship’s
hull with two ropes that are permanently attached as guide and
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. tie ropes (see Fig. 1).
1.5 This international standard was developed in accor-
3.3 Type III rat guards (see 3.1.3) require a person to contact
dance with internationally recognized principles on standard-
the mooring line to pull the two halves of the conical guard
ization established in the Decision on Principles for the
around the mooring line, wrap the slotted sleeves (see Fig. 2)
Development of International Standards, Guides and Recom-
to the line, and physically close any opening between the
mendations issued by the World Trade Organization Technical
mooring line and the circular opening at the center of the
Barriers to Trade (TBT) Committee.
guard.
4. Ordering Information
2. Referenced Documents
2 4.1 Orders for rat guards under this specification shall
2.1 ASTM Standards:
include the following information:
A653M Specification for Steel Sheet, Zinc-Coated (Galva-
4.1.1 ASTM designation.
nized) or Zinc-Iron Alloy-Coated (Galvannealed) by the
4.1.2 Type required (see 3.1):
Hot-Dip Process
4.1.2.1 If Type III, material required (see 5.1.3).
B209M Specification for Aluminum and Aluminum-Alloy
4.1.2.2 If Type III, size required (see 3.1.3).
Sheet and Plate (Metric)
4.1.3 Quantity required.
4.1.4 Optional requirements, if any (see Supplementary
3. Classification
Requirements S1 through S3).
3.1 Rat guards shall be classified into three types as follows:
5. Materials and Manufacture
5.1 Materials:
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships
5.1.1 Type I rat guards shall be made of aluminum-alloy
and Marine Technology and is the direct responsibility of Subcommittee F25.07 on
sheet metal conforming to the requirements of Specification
General Requirements.
B209M, 6061-T6, or 5052-H32.
Current edition approved April 1, 2018. Published April 2018. Originally
5.1.2 Type II rat guards shall be made of galvanized sheet
approved in 1987. Last previous edition approved in 2011 as F1099M – 98 (2011).
DOI: 10.1520/F1099M-98R18.
steel conforming to the requirements of Specification A653M,
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Coating Designation 450. The coating shall be a minimum of
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
2
450 g/m in accordance with the triple-spot test of Specifica-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. tion A653M.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F1099M − 18
TABLE 1 Mooring Line Combinations for Type I Rat Guards
Mooring Lines Diameter, mm Number of Lines
5 wire as required
25–33 line 3 or more
41–50 line 3
50–82 line 2
5.1.3 Type III rat guards shall be made of either of the
materials specified in 5.1.1 and 5.1.2 (see 4.1.2.1).
5.2 Manufacture:
5.2.1 Types I and II rat guards shall be
...

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: F1099M − 98 (Reapproved 2011) F1099M − 18 An American National Standard
Standard Specification for
1
Rat Guards, Ship’sShip’s (Metric)
This standard is issued under the fixed designation F1099M; 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 covers the materials, dimensions, and assembly of steel and aluminum rat guards.
1.2 Rat guards are intended to prevent rats from boarding ships by way of mooring lines.
1.3 The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 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
2.1 ASTM Standards:
A525MA653M Specification for General Requirements for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated
(Galvannealed) by the Hot-Dip Process (Withdrawn 1994)
B209M Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)
3. Classification
3.1 Rat guards shall be classified into three types as follows:
3.1.1 Type I—Multiple-line (doubling up), self-adjustable, accommodating the mooring line combinations listed in Table 1.
3.1.2 Type II—Single-line, self-adjustable, accommodating a single 5-mm wire to a 76-mm-diameter mooring line.
3.1.3 Type III—Conical shape with tapered, slotted sleeve. Type III rat guards shall be of the following sizes: (a) 75 mm, (b)
125 mm, and (c) 200 mm.
3.2 Types I and II rat guards (see 3.1.1 and 3.1.2) are designed to be installed from the deck or pier without a person physically
coming in contact with the mooring lines or hawser, by lowering and positioning the guards away from the ship’sship’s hull with
two ropes that are permanently attached as guide and tie ropes (see Fig. 1).
3.3 Type III rat guards (see 3.1.3) require a person to contact the mooring line to pull the two halves of the conical guard around
the mooring line, wrap the slotted sleeves (see Fig. 2) to the line, and physically close any opening between the mooring line and
the circular opening at the center of the guard.
4. Ordering Information
4.1 Orders for rat guards under this specification shall include the following information:
4.1.1 ASTM designation.
4.1.2 Type required (see 3.1):
4.1.2.1 If Type III, material required (see 5.1.3).
4.1.2.2 If Type III, size required (see 3.1.3).
4.1.3 Quantity required.
1
This specification is under the jurisdiction of ASTM Committee F25 on Ships and Marine Technology and is the direct responsibility of Subcommittee F25.07 on General
Requirements.
Current edition approved May 1, 2011April 1, 2018. Published May 2011April 2018. Originally approved in 1987. Last previous edition approved in 20052011 as
F1099M – 98 (2005).(2011). DOI: 10.1520/F1099M-98R11.10.1520/F1099M-98R18.
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 Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F1099M − 18
TABLE 1 Mooring Line Combinations for Type I Rat Guards
Mooring Lines Diameter, mm Number of Lines
5 wire as required
25–33 line 3 or more
41–50 line 3
50–82 line 2
FIG. 1 Types I and II Rat Guard Configuration
4.1.4 Optional requirements, if any (see Supplementary Requirements S1 through S3).
2

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F1099M − 18
FIG. 2 Assembly of Type III Rat Guards
5. Materials and Manufacture
5.1 Materials:
5.1.1 Type I rat guards shall be made of aluminum-alloy sheet metal conforming to the r
...