ASTM C211-68 PDF

Full title and description

ASTM C211-68 — Specification for Standard Strength Perforated Clay Pipe. This is an ASTM specification that defined material, dimensions, strength, absorption and acid‑resistance requirements for perforated clay pipe intended for underdrainage, filter fields, leaching fields and similar subdrainage installations.

Abstract

ASTM C211-68 established two classes (Standard Strength and Extra Strength) of perforated clay pipe, set requirements for crushing strength by size, maximum water absorption, dimensional tolerances, and optional acid‑resistance testing. The standard provided test methods and acceptance criteria for manufacturing and inspection of perforated clay pipe used in subsurface drainage applications.

General information

• Status: Withdrawn / Superseded (withdrawn 1972; later replaced by ASTM C700).
• Publication date: Designation year 1968 (current edition accepted June 18, 1968; original issuances and prior revisions date earlier).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: Construction materials / Drainage and sewerage products; vitrified clay and unglazed clay pipe standards and test methods.
• Edition / version: C211-68 (designation indicates the 1968 edition).
• Number of pages: Approximately 5 pages (short specification).

Scope

This specification covered standard and extra‑strength perforated clay pipe intended for use in underdrainage, filter fields, leaching fields and similar subsurface drainage installations. It defined material types (surface clay, fire clay, shale or combinations), manufacturing requirements, size and dimensional provisions, crushing strength minima by size and class, absorption limits, and procedures for optional acid‑resistance testing.

Key topics and requirements

• Classification into Class I (Standard Strength Perforated Clay Pipe) and Class II (Extra Strength Perforated Clay Pipe) with different minimum crushing strengths by nominal pipe size.
• Material definitions and allowable raw materials (surface clay, fire clay, shale) and basic manufacturing and firing requirements.
• Crushing strength and absorption limits (tabled minimum strength values by size; absorption limits typically specified).
• Optional acid‑resistance test procedures and acceptance criterion for acid‑soluble matter when acid testing is specified.
• Size, dimensional tolerances, workmanship and finish requirements intended to ensure serviceability and interchangeability in drainage systems.

Typical use and users

Used historically by pipe manufacturers, civil and geotechnical engineers, contractors, municipal public‑works departments and specifiers involved in design and construction of subsurface drainage, leach fields and other underdrain systems. In practice it guided procurement, quality control and acceptance testing for perforated clay drain tile products.

Related standards

ASTM C211-68 has been withdrawn and its scope was later addressed by other ASTM specifications. Notable related and successor standards include ASTM C700 (which addresses vitrified clay pipe and has been used in place of older C211 provisions), and other clay‑pipe and drainage documents such as ASTM C13, C200, C12 and testing methods referenced within the specification (for example methods for strength and acid‑resistance).

Keywords

perforated clay pipe, drain tile, subdrainage, leaching field, crushing strength, absorption, acid resistance, ASTM C211, pipe specification.

FAQ

Q: What is this standard?

A: ASTM C211-68 is the 1968 ASTM specification titled "Specification for Standard Strength Perforated Clay Pipe," which set requirements for perforated clay pipe used in subsurface drainage applications.

Q: What does it cover?

A: It covers materials, classification (standard and extra strength), minimum crushing strength by size, absorption limits, sizes and dimensional tolerances, workmanship and optional acid‑resistance testing for perforated clay pipe.

Q: Who typically uses it?

A: Manufacturers of clay drain pipe, civil and geotechnical engineers, contractors, and public‑works specifiers who designed or specified subsurface drainage and leaching systems historically used this standard.

Q: Is it current or superseded?

A: It is withdrawn (withdrawn in the early 1970s) and has been superseded in practice by later ASTM standards for clay pipe; ASTM C700 is commonly cited as the replacement/successor reference.

Q: Is it part of a series?

A: It was part of the ASTM suite of clay pipe standards managed by Committee C04 (Vitrified Clay Pipe) and cross‑referenced other ASTM clay and pipe standards (for example C13, C12, C200 and related test methods).

Q: What are the key keywords?

A: Perforated clay pipe, drain tile, underdrainage, crushing strength, absorption, acid‑resistance, ASTM C211, pipe classes.