F102-96

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American Water Works Association

ANSI/AWWA F102-96

(Revision of ANSI/AWWA F102-91)

AWWA STANDARD

FOR

MATCHED-DIE-MOLDED,

FIBERGLASS-REINFORCED

PLASTIC WEIR PLATES, SCUM BAFFLES,

AND MOUNTING BRACKETS

All changes specified in addendum AWWA F102a-97 have been incorporated into this standard.

Effective date: Mar. 1, 1997.

First edition approved by AWWA Board of Directors January 27, 1991.

This edition approved June 23, 1996.

Approved by American National Standards Institute Nov. 27, 1996.

AMERICAN WATER WORKS ASSOCIATION

6666 West Quincy Avenue, Denver, Colorado 80235

R

Copyright (C) 1998 American Water Works Association, All Rights Reserved.
http://../awwastds.pdf

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AWWA Standard

This document is an American Water Works Association (AWWA) standard. It is not a specification.

AWWA standards describe minimum requirements and do not contain all of the engineering and

administrative information normally contained in specifications. The AWWA standards usually con-tain options that must be evaluated by the user of the standard. Until each optional feature is

specified by the user, the product or service is not fully defined. AWWA publication of a standard

does not constitute endorsement of any product or product type, nor does AWWA test, certify, or

approve any product. The use of AWWA standards is entirely voluntary. AWWA standards are

intended to represent a consensus of the water supply industry that the product described will

provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of

action will be placed on the first page of the classified advertising section of Journal AWWA. The

action becomes effective on the first day of the month following the month of Journal AWWApubli-

cation of the official notice.

American National Standard

An American National Standard implies a consensus of those substantially concerned with its scope

and provisions. An American National Standard is intended as a guide to aid the manufacturer, the

consumer, and the general public. The existence of an American National Standard does not in any

respect preclude anyone, whether that person has approved the standard or not, from manufactur-

ing, marketing, purchasing, or using products, processes, or procedures not conforming to the stan-

dard. American National Standards are subject to periodic review, and users are cautioned to obtain

the latest editions. Producers of goods made in conformity with an American National Standard areencouraged to state on their own responsibility in advertising and promotional materials or on tags

or labels that the goods are produced in conformity with particular American National Standards.

CAUTION NOTICE: The American National Standards Institute (ANSI) approval date on the front

cover of this standard indicates completion of the ANSI approval process. This American National

Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken

to reaffirm, revise, or withdraw this standard no later than five years from the date of publication.

Purchasers of American National Standards may receive current information on all standards by

calling or writing the American National Standards Institute, 11 W. 42nd St., New York, NY 10036;

(212) 642-4900.

Copyright 1997 by American Water Works Association

Printed in USA

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Committee Personnel

The AWWA Standards Committee on Fiberglass Weirs, Troughs, and Baffles,

which reviewed and approved this standard, had the following personnel at the time

of approval:

Roger P. Baker, Chair

Consumer Members

Joseph Butch, Warminster Municipal Authority, Warminster, Pa. (AWWA)

L.A. Grasha, Metro Water District, La Verne, Calif. (AWWA)

G.A. Johnson, City of Nashville Metro Water Services, Nashville, Tenn. (AWWA)

R.S. Pang, City of Sacramento, Sacramento, Calif. (AWWA)

General Interest Members

R.P. Baker, Jones & Henry Engineers Inc., Toledo, Ohio (AWWA)

T.W. Crist, Carmichael, Calif. (AWWA)

G.M. Jones, Brown & Caldwell Consultants, Walnut Creek, Calif. (AWWA)

E.S. Ralph,*Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA)

D.P. Wetstein, Montgomery Watson, Las Vegas, Nev. (AWWA)

J.S. Young,*Council Liaison, American Water Works Service Co.,

Voorhees, N.J. (AWWA)

Producer Members

D.H. Eden, Roberts Filter Manufacturing Company, Darby, Pa. (AWWA)

J.J. Roley, Warminster Fiberglass Company, Southampton, Pa. (AWWA)

R.L. Shinsky, F.B. Leopold Company Inc., Zelienople, Pa. (AWWA)

J.K. Vitas, Plasti-Fab Inc., Tualatin, Ore. (AWWA)

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*Liaison, nonvoting


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Contents

All AWWA standards follow the general format indicated subsequently. Some variations from this format may

be found in a particular standard.

SEC. PAGE SEC. PAGE

Foreword

I Introduction....................................... vii

I.A Background ....................................... vii

I.B History............................................... vii

I.C Acceptance......................................... vii

II Special Issues.................................. viii

III Use of This Standard ..................... viii

III.A Purchaser Options and

Alternatives .................................. viiiIII.B Modification to Standard .................. ix

IV Major Revisions ................................. ix

V Comments .......................................... ix

Standard

1 General

1.1 Scope.................................................... 1

1.2 Purpose................................................ 2

1.3 Application .......................................... 2

2 References......................................... 2

3 Definitions........................................ 3

4 Requirements

4.1 Information to Be Supplied by

Manufacturer.................................... 3

4.2 Materials ............................................. 3

4.3 General and Detailed Design ............ 5

4.4 Chemical and Physical

Requirements.................................... 6

5 Verification

5.1 Sample Specimens.............................. 6

5.2 Production Testing.............................. 6

5.3 Inspection............................................ 6

5.4 Rejection.............................................. 8

6 Delivery

6.1 Marking............................................... 8

6.2 Packing and Shipping ........................ 8

6.3 Affidavit of Compliance...................... 8

Tables

1 Allowable Cosmetic Defects ofFiberglass Components.................... 7

2 Minimum Physical Properties of

Laminates ......................................... 8

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Foreword

This foreword is for information only and is not a part of AWWA F102.

I. Introduction

I.A. Background. The purpose of this standard is to establish the minimumquality requirements for matched-die-molded, glass-fiber-reinforced thermoset resin

weir plates, scum baffles, and mounting brackets, for use in municipal and indus-

trial water treatment plants. The weirs, baffles, and brackets are intended for use in

treatment basins or tanks. However, the specific application must consider the limi-

tations specified under Sec. 1.1, and information must be provided by the purchaser

to completely describe the fabrication requirements. Purchaser-specific information

that should be considered is summarized in the foreword, Sec. III. The purchaser

should review these recommendations and other appropriate data, and make provi-

sions in the purchasers specifications to describe the specific service requirements.

I.B. History. In 1986, the American Water Works Association (AWWA) Stand-

ards Council authorized the development of AWWA standards to describe matched-

die-molded, glass-fiber-reinforced, thermoset resin weir plates, scum baffles, and

mounting brackets. Beginning in 1987, with preliminary, but unfinished, standards

developed by an earlier American Society for Testing and Materials (ASTM) group,

the AWWA Standards Committee on Fiberglass Weirs, Troughs, and Baffles formu-

lated and reviewed several drafts of this final standard. The AWWA Standards Com-

mittee on Fiberglass Weirs, Troughs, and Baffles prepared AWWA F102 and

completed work on the first edition of this standard titled AWWA Standard for

Matched-Die-Molded, Fiberglass-Reinforced Plastic Weir Plates, Scum Baffles, and

Mounting Brackets. The final draft was submitted to the committee for letter ballot

voting on Aug. 23, 1990, and a consensus for acceptance was received. This edition

was approved by the AWWA Board of Directors on June 23, 1996.

I.C. Acceptance. In May 1985, the US Environmental Protection Agency

(USEPA) entered into a cooperative agreement with a consortium led by NSF Inter-

national (NSF) to develop voluntary third-party consensus standards and a certifica-tion program for all direct and indirect drinking water additives. Other members of

the original consortium included the American Water Works Association Research

Foundation (AWWARF) and the Conference of State Health and Environmental

Managers (COSHEM). The American Water Works Association (AWWA) and the As-

sociation of State Drinking Water Administrators (ASDWA) joined later.

In the United States, authority to regulate products for use in, or in contact

with, drinking water rests with individual states.* Local agencies may choose to

impose requirements more stringent than those required by the state. To evaluate

the health effects of products and drinking water additives from such products, state

and local agencies may use various references, including

1. An advisory program formerly administered by USEPA, Office of Drinking

Water, discontinued on Apr. 7, 1990. 2. Specific policies of the state or local agency.

vii

*Persons in Canada, Mexico, and non-North American countries should contact theappropriate authority having jurisdiction.


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3. Two standards developed under the direction of NSF, ANSI*/NSF 60,

Drinking Water Treatment ChemicalsHealth Effects, and ANSI/NSF 61, Drinking

Water System ComponentsHealth Effects.

4. Other references, including AWWA standards, Food Chemicals Codex,

Water Chemicals Codex,and other standards considered appropriate by the state or

local agency.

Various certification organizations may be involved in certifying products inaccordance with ANSI/NSF 61. Individual states or local agencies have authority to

accept or accredit certification organizations within their jurisdiction. Accreditation

of certification organizations may vary from jurisdiction to jurisdiction.

Appendix A, Toxicology Review and Evaluation Procedures, to ANSI/NSF 61

does not stipulate a maximum allowable level (MAL) of a contaminant for sub-

stances not regulated by a USEPA final maximum contaminant level (MCL). The

MALs of an unspecified list of unregulated contaminants are based on toxicity

testing guidelines (noncarcinogens) and risk characterization methodology (carcino-

gens). Use of Appendix A procedures may not always be identical, depending on the

certifier.

AWWA F102-96 does not address additives requirements. Thus, users of this

standard should consult the appropriate state or local agency having jurisdiction inorder to

1. Determine additives requirements including applicable standards.

2. Determine the status of certifications by all parties offering to certify prod-

ucts for contact with, or treatment of, drinking water.

3. Determine current information on product certification.

II. Special Issues.This standard has no applicable information for this section.

III. Use of This Standard. AWWA has no responsibility for the suitability or

compatibility of the provisions of this standard to any intended application by any

user. Accordingly, each user of this standard is responsible for determining that the

standards provisions are suitable for and compatible with that users intended

application.

III.A. Purchaser Options and Alternatives. The following items should be cov-

ered in the purchasers specifications:

1. Standard usedthat is, ANSI/AWWA F102, Standard for Matched-Die-Molded,

Fiberglass-Reinforced Plastic Weir Plates, Scum Baffles, and Mounting Brackets, of

latest revision.

2. Weir flow capacity.

3. Dimensional and weight limitations.

4. Materials present in the water to be treated, with which the fabrications

will be in contact.

5. Range of normal operating and extreme ambient temperatures anticipated

during storage, project construction, maintenance, or other dewatered conditions.

6. Fittings and attachment methods to be used and their requirements.

7. Type of installation.

viii

*American National Standards Institute, 11 W. 42nd St., New York, NY 10036.

NSF International, 3475 Plymouth Rd., Ann Arbor, MI 48106.

Both publications available from National Academy of Sciences, 2102 Constitution Ave.N.W., Washington, DC 20418.


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8. Operating conditions.

9. Fabrication classification (Sec. 1.1.2).

10. Whether certified drawings are to be furnished (Sec. 4.1).

11. Whether ultraviolet stabilizers are required (Sec. 4.2.4).

12. Color and aesthetic treatments (Sec. 4.2.6).

13. Weir notch type and spacing (Sec. 4.3.1).

14. Specimens to be provided by the manufacturer (Sec. 5.1).15. Tests to be performed by the manufacturer (Sec. 5.2).

16. Whether plant inspection is required (Sec. 5.3).

17. Retest agreement requirements (Sec. 5.2.3).

18. In the event that materials or products fail to conform to the requirements

of this standard, the assignment of cost for replacement should be addressed

(Sec. 5.4).

19. Whether a guarantee statement is to be placed on the final product

(Sec. 6.1.2).

20. Whether an affidavit of compliance is to be provided (Sec. 6.3).

21. Whether a fire-retardant additive is required. The purchaser may desire

plastic fabrications that include a fire-retardant additive to protect against flame

spread and smoke propagation during storage, plant construction, and other condi-tions when basins are dewatered. The purchaser should recognize that such fabrica-

tions may be more costly, availability may be more limited, and NSF or other

certifications for products in contact with drinking water may not be possible.

III.B. Modification to Standard. Any modifications to the provisions, defini-

tions, or terminology in this standard must be provided in the purchasers specifications.

IV. Major Revisions. Major revisions made to the standard in this edition

include the following:

1. The format has been changed to AWWA standard style.

2. The acceptance clause (Sec. I.C) has been revised to approved wording.

3. Definitions for cosmetic defect and structural defect have been added

(Sec. 3).

V. Comments. If you have any comments or questions about this standard,

please call the AWWA Standards and Materials Development Department, (303) 794-

7711 ext. 6283, FAX (303) 795-1440, or write to the department at 6666 W. Quincy

Ave., Denver, CO 80235.

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American Water Works Association

ANSI/AWWA F102-96

(Revision of ANSI/AWWA F102-91)

AWWA STANDARD FOR

MATCHED-DIE-MOLDED,

FIBERGLASS-REINFORCED

PLASTIC WEIR PLATES,SCUM BAFFLES, AND

MOUNTING BRACKETS

PLATES,BAFFLES, AND BRACKETS

SECTION 1: GENERAL

Sec. 1.1 Scope

This standard covers the minimum requirements for glass-fiber-reinforced plas-

tic weir plates, scum baffles, mounting brackets, lap plates, cover washers, and weir

pans, fabricated with the matched-die molding process. Included are requirements

for design, construction, dimensions, tolerances, physical properties, workmanship,

appearance, and installation. This standard contains the requirements for using the

general-purpose and chemical-resistant resins. These fabrications are used in mu-

nicipal water supply service and industrial water supply service applications.

1.1.1 Exceptions. This standard does not cover weir plates, scum baffles,

mounting brackets, lap plates, and cover washers fabricated with the hand lay-up,

spray-up, or flat-sheet machine-cut method.

1.1.2 Classification. Resistance to the corrosive or chemical environment shall

be determined prior to molding either type I or type II fabrications. Typically mu-

nicipal water supply service applications use type I, while industrial water supply

service applications may use either type I or type II, depending upon the condition

of the environment. Weir plates, baffles, and brackets shall be classified according to

type as follows:

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1.1.2.1 Type I. Fabrications shall be manufactured with a polyester resin of

the orthophthalic or isophthalic formulation. Type I fabrications shall be manufac-

tured of materials suitable for general purpose applications having a temperature

range not exceeding 150F (83C).

1.1.2.2 Type II. Fabrications shall be manufactured with a chemical-resistant

polyester resin, such as vinylester, bisphenol-a-fumarate, or chlorendic formulations.

Type II fabrications shall be manufactured for chemical-resistant applications hav-ing a temperature range not exceeding 200F (111C).

Sec. 1.2 Purpose

The main purpose of this standard is to provide the minimum requirements for

matched-die-molded, fiberglass-reinforced plastic weir plates, scum baffles, and

mounting brackets, including materials, design, chemical and physical requirements,

verification, and delivery.

Sec. 1.3 Application

This standard can be referenced in specifications for matched-die-molded, fiber-

glass-reinforced plastic weir plates, scum baffles, and mounting brackets. The stipu-

lations of this standard apply when this document has been referenced and thenonly to matched-die-molded, fiberglass-reinforced plastic weir plates, scum baffles,

and mounting brackets.

SECTION 2: REFERENCES

This standard references the following documents. In their latest editions,

these documents form a part of this standard to the extent specified within the

standard. In any case of conflict, the requirements of this standard shall prevail.

ANSI*/ASTM C581Standard Practice for Determining Chemical Resistance

of Thermosetting Resins Used in Glass-Fiber-Reinforced Structures Intended for

Liquid Service.ANSI/ASTM D256Standard Test Methods for Determining the Pendulum Im-

pact Resistance of Notched Specimens of Plastics.

ANSI/ASTM D570Standard Test Method for Water Absorption of Plastics.

ANSI/ASTM D638Standard Test Method for Tensile Properties of Plastics.

ANSI/ASTM D790Standard Test Methods for Flexural Properties of Unrein-

forced and Reinforced Plastics and Electrical Insulating Materials.

ANSI/ASTM D2583Standard Test Method for Indentation Hardness of Rigid

Plastics by Means of a Barcol Impressor.

ASTM G23Standard Practice for Operating Light-Exposure Apparatus (Carbon-

Arc Type) With and Without Water for Exposure of Nonmetallic Materials.

2 AWWA F102-96

*American National Standards Institute, 11 W. 42nd St., New York, NY 10036.

American Society for Testing and Materials, 100 Barr Harbor Dr., West Conshohocken, PA19428-2959.


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SECTION 3: DEFINITIONS

The following definitions shall apply in this standard:

1. Chemical resistant:When used in accordance with this standard, the ter-

minology chemical resistant shall always mean type II fabrications.

2. Cosmetic defect:A blemish that has no effect on the ability of the compo-nent to meet the structural design and production test requirements of this stand-

ard. Should the blemish or the activity of plugging, grinding, or repairing of such

blemish cause the component to fail these requirements, then the blemish shall be

considered a structural defect.

3. General purpose:When used in accordance with this specification, the ter-

minology general purpose shall always mean type I fabrications.

4. Manufacturer:The party that manufactures, fabricates, or produces mate-

rials or products.

5. Match-die molding:Match-die molding refers to the process of molding in

precision-made dies or molds, producing fabrications that exhibit uniform thickness

and accurate dimensions.

6. Purchaser:The person, company, or organization that purchases any mate-

rials or work to be performed.

7. Scum baffle:A plate usually placed in front of the weir plate that prevents

floating particles (scum) from flowing over the weir plates.

8. Sheet molding compound (SMC):A compound consisting of polyester resin,

fiberglass reinforcement, fillers, pigment, mold release, and catalyst, in the form of a

sheet of material prepared ready for molding in matched-die molds.

9. Structural defect:A flaw that causes the component to fail the structural

design or test requirements of this standard. This includes, but is not limited to,

imperfections that result in leakage through the walls, failure to meet the minimum

wall-thickness requirement, or failure to meet production tests.

10. Supplier:The party that supplies material or services. A supplier may or

may not be the manufacturer.

11. Weir plate:A plate with either straight edges, V-notches, or square cutoutsalong the top edge to allow water to flow over each notch at a predetermined rate.

SECTION 4: REQUIREMENTS

Sec. 4.1 Information to Be Supplied by the Manufacturer

When required, the manufacturer shall submit, for review by the purchaser,

certified drawings showing the principal dimensions, construction details, and mate-

rials used for the fabrication. All work shall be done in accordance with these certi-

fied drawings after they have been accepted by the purchaser.

Sec. 4.2 Materials

4.2.1 Resin.

4.2.1.1 Type I (general-purpose) fabrications. The resin for type I fabrications

shall be a commercial-grade polyester thermosetting resin that has been evaluated

in a laminate and is acceptable for the service conditions.

PLATES, BAFFLES, AND BRACKETS 3


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4.2.1.2 Type II (chemical-resistant) fabrications. The resin for type II fabrica-

tions shall be a commercial-grade, chemical-resistant polyester thermosetting resin

that has been evaluated in a laminate and is acceptable for the service conditions.

4.2.2 Filler.

4.2.2.1 Type I (general-purpose) fabrications. The filler for type I fabrications,

if used, shall be up to a maximum of 50 percent calcium carbonate or other filler

that has been evaluated in a laminate and determined to be acceptable for contactwith potable water.

4.2.2.2 Type II (chemical-resistant) fabrications. The filler for type II fabrica-

tions, if used, shall be up to a maximum of 50 percent clay or other filler that has

been evaluated in a laminate and determined to be acceptable for contact with pota-

ble water or has been determined to be acceptable for the service conditions.

4.2.3 Reinforcement material.

4.2.3.1 Reinforcement (fibrous glass). Fibrous glass reinforcement shall be

either: (1) type C (chemical) or equivalent, glass surfacing mat, where applicable,

0.010-in. to 0.020-in. (0.25-mm to 0.50-mm) thick, with a silane finish and a styrene-

soluble binder on both sides; or (2) type E (electrical borosilicate) or equivalent, glass

mat, with chrome or silane finish and a styrene-soluble binder compatible with the

resin.4.2.3.2 Reinforcement (nonfibrous glass). Nonfibrous glass reinforcement shall

be synthetic surfacing mat and shall be used for chemical environments when

type C glass is not compatible with the intended chemical environment.

4.2.3.3 Sheet molding compound (SMC). As defined in Sec. 3(8).

4.2.4 Ultraviolet stabilizers. Ultraviolet (UV) stabilizers, whether in the form

of inorganic pigmentation, UV absorbers, or energy transfer agents, are required in

all laminates exposed to UV light. The laminate shall exhibit no more than 2 per-

cent deterioration of flexural and tensile properties after 1,000 h of exposure in a

type E, single open-flame, sunshine carbon-arc lamp apparatus, as detailed in

ASTM G23.

4.2.5 Additives. Thixotropic agents, mold release agents, promotors, catalysts,

and low-shrink thermoplastic agents are necessary to formulate the molding com-

pounds used in matched-die molding. The amount of additives used shall be deter-

mined by the manufacturers; the physical and chemical property requirements of

this standard shall not be altered in the process.

4.2.6 Pigments. Pigments, dyes, or colorants used shall be suitable for contact

with potable water. Pigments shall be light stable, not soluble in water, and compat-

ible with the resin. Typical color shall be thalo green, blue-green, white, or as re-

quired by the purchaser.

4.2.7 Manufacturing procedures. The matched-die molding process shall be

used to produce fiberglass-reinforced plastic molded parts with smooth resin-rich

surfaces and edges, dimensional accuracy, and consistency. Moldings shall exhibit

resistance to corrosive and physical attack from the process or weathering. Weir

plate notches shall be molded within dies to ensure resin-rich edges and notches for

increased corrosion and weather resistance.Fiberglass-reinforced plastic fabrications molded in compliance with this stand-

ard shall be weir plates, scum baffles, mounting brackets, lap plates, cover washers,

and weir pans. Weir plates and scum baffles, fabricated from plastic stock or hand

lay-up methods, are not covered by this standard. All cut edges shall be sanded and

sealed with nonair-inhibited resin to ensure edges are completely sealed and to pre-

vent water or chemicals from penetrating the laminate.

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Sec. 4.3 General and Detailed Design

4.3.1 Dimensions. The dimensional criteria included in this standard for V-notch

spacing, depth, length, and height of weir plates, slots, holes, and thickness are

based on existing tooling and practice, which have become the industry standard.

4.3.1.1 Weir-plate openings. Weir plates shall have 90 V-notches, rectangular

notches, or shall be flat crested (straight edge).

4.3.1.2 V-notch weir spacings. Weir plates with 90 V-notches shall have

notches spaced at intervals of 4 in., 6 in., or 12 in. (102 mm, 152 mm, or 305 mm), 116 in. (1.6 mm), center-to-center. A spacing of 4 in. (102 mm) shall not be used for

notch depths greater than 2 in. (50 mm). The V-notch depth shall be 112in., 2 in.,

212 in., or 3 in. (38 mm, 50 mm, 64 mm, or 76 mm), 18 in. (3 mm). The angle of

the V-notch shall be 90 2. The draft angle across the 14-in. (6-mm) thickness of

the weir plate shall not exceed 7.

4.3.1.3 Rectangular-notch weir spacings. Weir plates with rectangular notches

shall have notches spaced at intervals of 4 in., 6 in., or 8 in. (102 mm, 152 mm, or

203 mm), 116in. (1.6 mm), center-to-center. Notches shall be 112-in. (38-mm) deep

by 114-in. (32-mm) wide. Variance in depth and width of the notch shall be 116in.

(1.6 mm). The draft angle across the 14-in. (6-mm) thickness of the weir plate shall

not exceed 7.4.3.1.4 Flat-crested weir edge. Flat-crested weir plates shall be straight, vary-

ing not more than 132 in. (0.8 mm) in 12 ft (3,700 mm). Draft angle across the14-in. (6-mm) dimension shall not exceed 7.

4.3.1.5 Other product sizes. Sizes, other than those presented in Sec. 4.3.1.2

through Sec. 4.3.1.4, may be produced with agreement between the purchaser and

manufacturer.

4.3.2 Provisions for attachment.

4.3.2.1 Weir-plate anchor-bolt holes. Weir-plate anchor-bolt holes for wall

mounting shall be a minimum of 212 in. (63.5 mm), 18 in. (3 mm), and may be

round or square. The center-to-center dimensions between holes shall be not more

than 12 in. (300 mm), 18 in. (3 mm), for straight walls or a maximum of 24 in.

(600 mm) for curved walls or launders. Bolt spacing shall start at the ends of weirplates to prevent flaring out from the surface.

4.3.2.2 Thermal expansion/contraction. The fabrication shall be designed to

accommodate thermally induced expansion and contraction over a temperature

range of 10F to 100F (23C to 38C) without exceeding the deflection or strain

limitations set forth herein. Maximum vertical deflection shall be equal to or less

than L/1,000, where L is defined as the unsupported fabrication length in inches.

Maximum horizontal deflection shall be equal to or less than D/100, where D is

defined as the fabrication depth in inches. Maximum stress in the fabrication shall

be less than or equal to 1,500 psi (10,400 kPa).

4.3.2.3 Slots. Weir-plate slots for mounting to troughs or launders shall be116 in. (1.6 mm) wider than the bolts, and shall provide for a minimum adjustment

of 12in. (13 mm), after allowing for the diameter of the attachment bolt.4.3.2.4 Countersinking provisions. Scum-baffle mounting holes shall be coun-

tersunk to a depth that allows the flat head bolts to be flush or below the surface.

4.3.2.5 Scum-baffle mounting-bracket dimensions. Scum-baffle mounting brackets

shall be designed and fabricated to meet the physical requirements set forth in

Sec. 4.3.2.2. The width of the mounting brackets shall not be less than 3 in.

(75 mm). The length of the bracket bases shall not be less than 6 in. (150 mm). The



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bracket depths shall not be less than 8 in. (200 mm). Scum-baffle brackets shall be

fabricated from fiberglass-reinforced plastic laminate with a thickness not less than316in. (4.7 mm).

4.3.2.6 Scum-baffle mounting-bracket spacing. Maximum spacing for scum-

baffle mounting brackets shall be 48 in. (1,200 mm), 18 in. (3 mm), for curved

walls, and 24 in. (600 mm), 18 in. (3 mm), for straight walls. Brackets shall pro-

vide a minimum of 34-in. (19-mm) adjustment in any plane.4.3.3 Finish and appearance. The surface finish of all fiberglass components

manufactured in accordance with this standard shall be smooth and resin-rich. The

flat surfaces and edges shall be free from porosity, voids, or dry glass. The surfaces

and edges must be resin-rich in order to achieve the maximum resistance to corro-

sion and weathering. Parts manufactured with porosity, voids, dry glass, or delami-

nation will be rejected. Repair of cosmetic defects is acceptable if performed in a

neat manner and blended smooth. Table 1 lists allowable cosmetic defects.

Sec. 4.4 Chemical and Physical Requirements

4.4.1 Chemical resistance. Chemical resistance of the resin shall be deter-

mined using ANSI/ASTM C581. The reinforcing materials prescribed in the test

laminate are only for the purpose of establishing a uniform basis for comparison;they may not necessarily represent the preferred materials for the particular envi-

ronment. This procedure may be adapted to test or evaluate components, composi-

tion or fabrication variations, and production samples.

4.4.2 Minimum physical requirements. All laminates shall meet the minimum

physical properties listed in Table 2.

SECTION 5: VERIFICATION

Sec. 5.1 Sample Specimens

Test specimens shall be cut from production pieces and tested in accordancewith the methods listed in Table 2 of this standard. The number of test coupons

required for each test shall be in accordance with the applicable test method referenced.

Sec. 5.2 Production Testing

5.2.1 Physical property tests. Physical property tests shall be performed on a

minimum of 5 percent of the fabrications manufactured.

5.2.2 Chemical-resistance property tests. Chemical-resistance property tests

shall be conducted prior to production molding, unless previous documented per-

formance and tests demonstrate suitability as a type I or type II laminate.

5.2.3 Retest. If failure occurs, the material may be retested to establish con-

formity, in accordance with agreement between the manufacturer and purchaser.

Sec. 5.3 Inspection5.3.1 Inspection at the manufacturers plant. The purchaser may inspect the

fabrications at the manufacturers plant, and shall specify the conditions under

which the inspection shall be made.

5.3.2 Access to work. When the purchaser desires to conduct inspections, the

purchaser shall have free access to those parts of the manufacturers plant that are

necessary to ensure compliance with this standard. The manufacturer shall make

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Table 1 Allowable cosmetic defects of fiberglass components

Defect Definition All Surfaces

Cracks An actual separation of the laminate

visible on opposite surfaces and

extending through the thickness

None

Cracks (fine surface cracks) Crack existing only on the surface

of the laminate

None

Blisters Rounded elevations of the

laminate surface over bubbles with

boundaries that may be more or

less sharply defined

None

Wrinkles and solid blisters An imperfection that has the

appearance of a wave molded with

one or more plies of the

reinforcement material

Maximum deviation, 20% of wall

thickness, but not exceeding18in. (3 mm)

Pits (craters in the laminate

surface)

A small crater in the surface

of the laminate

Maximum dimensions, 132in.

(0.8 mm) diameter by 132in.

(0.8 mm) deep

Surface porosity Pinholes or pores in the laminate

surface

Maximum number of 25 pinholes

or pores in 5 in.2(32 cm

2); no

defect shall be less than 2 in.

(51 mm) from another

Chips A small piece of laminate broken

off an edge or surface

None

Dry spot (nonwetted reinforcing) Area of incomplete surface film

where the reinforcement has

not been wetted with resin

None

Entrapped air Bubbles or voids within the

laminate

316in. (4.7 mm) maximum

diameter; 10 per in.2(6 cm

2)

maximum density; 116in.

(1.6 mm) and smaller diameter,

not counted

Exposed glass Areas where the reinforcement

has not been wetted with resin

None

Burned areas Evidence of thermal decomposition

through some discoloration or

distortion of the surface of the

laminate

None

Exposure of cut edge Areas of cut or machined laminate

exposing edges of reinforcement

that have not been sealed with

resin coating

None

Scratches Shallow mark, groove, furrow, or

channel caused by improper

handling or storage

None

Foreign matter Particles of substance included in

a laminate that are foreign to its

composition

None



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available for the purchaser test equipment and apparatus and shall provide assis-

tance, as necessary, for inspection.

Sec. 5.4 Rejection

Materials or products that fail to conform to the requirements of this standard

will be rejected and replaced. Rejection should be reported to the manufacturer

promptly in writing. Whether or not the purchaser has an agent at the manufac-

turers site, an affidavit of compliance may be required from the manufacturer asprovided in Sec. 6.3 of this standard.

SECTION 6: DELIVERY

Sec. 6.1 Marking

6.1.1 Required marking. Products manufactured to this standard shall be

identified with the designation type I or type II, and the name of the manufac-

turer shall be either molded in, stamped on, or placed on printed labels attached to

all weir plates and baffle plates manufactured according to this standard.

6.1.2 Optional marking. As an option, each product may bear the statementGuaranteed by (name of manufacturer) to meet the requirements of AWWA Stand-

ard F102 for (list item), provided that the requirements of this standard are met

and the materials are not of different quality in separate agreement between the

supplier and purchaser.

Sec. 6.2 Packing and Shipping

Weir and baffle plates shall be tightly banded to skids or suitably packaged to

prevent damage during handling and shipping. Fiberboard or plastic corners shall

be placed at the edges under bands to prevent damage caused by the bands cutting

into the plastic material. Support brackets shall be placed in wooden boxes or fiber-

board cartons of sufficient strength to prevent damage during handling and shipping.

Sec. 6.3 Affidavit of Compliance

If required by the purchasers specifications, the manufacturer shall furnish

the purchaser an affidavit stating that the material was manufactured, sampled,

and inspected in accordance with this standard and the purchasers specifications,

and that all tests specified therein have been performed and all test requirements

have been met.

Table 2 Minimum physical properties of laminates

Property Test Method Minimum Properties

Notched izod impact strength ANSI/ASTM D256 10 ft-lb/in. (54.5 kg m/m)

Water absorption (24 h) ANSI/ASTM D570 0.2% maximum

Tensile strength ANSI/ASTM D638 7,500 psi (52 kg/cm

2

)Flexural strength ANSI/ASTM D790 16,000 psi (110 kg/cm

2)

Flexural modulus ANSI/ASTM D790 800 103psi (56.3 10

3kg/cm

2)

Barcol hardness ANSI/ASTM D2583 35 min

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