ASTM A761/A761M-25 PDF

Full title and description

ASTM A761/A761M-25 — Standard Specification for Corrugated Steel Structural Plate, Zinc-Coated, for Field‑Bolted Pipe, Pipe‑Arches, and Arches. This specification defines the material, fabrication, coating, dimensional and testing requirements for zinc‑coated corrugated structural steel plate used to fabricate field‑bolted pipe, arches, and related fittings for drainage, underpasses, and similar structures.

Abstract

This standard covers zinc‑coated corrugated steel structural plate intended for field‑bolted assembly into pipes, pipe‑arches, arches and special shapes. It specifies base steel requirements, corrugation and punching practices to ensure interchangeability of plates, zinc coating practice (typically applied after cutting, corrugating, punching and welding), mechanical property limits, and ordering and inspection requirements. The document is issued in dual designation (inch‑pound A761 and SI A761M) and references related design and installation practices.

General information

• Status: Current.
• Publication date: October 1, 2025 (designation A761/A761M‑25).
• Publisher: ASTM International (American Society for Testing and Materials).
• ICS / categories: 77.140.70 — Steel profiles; Corrugated steel structural plate; Committee A05 (metallic‑coated iron and steel products).
• Edition / version: A761/A761M‑25 (2025 edition).
• Number of pages: 12 pages.

Scope

This specification covers corrugated steel structural plate that is zinc‑coated and used to fabricate field‑bolted pipe, pipe‑arches, arches, underpasses, and special assembled shapes. It includes requirements for base steel chemistry and mechanical properties, corrugation geometry and punching for bolted lap seams, zinc coating practice (applied after fabrication operations), and accessory materials and fasteners appropriate for field assembly. The standard does not address bedding, backfill, or structural design criteria for earth loads; users are referred to Practices A796/A796M and A807/A807M for design and installation guidance.

Key topics and requirements

• Material requirements for base steel (chemical composition and acceptable steelmaking processes).
• Minimum mechanical properties of flat plate prior to corrugating (yield strength, tensile strength, elongation).
• Corrugation form, dimensions and tolerances; punching of bolt holes to ensure interchangeability of plates.
• Zinc coating requirements and sequencing (zinc coating applied after cutting, corrugating, punching and welding to ensure complete protection of exposed edges).
• Specification of fasteners, seam types (field‑bolted lap seams), and accessory materials for field assembly.
• Inspection, testing and acceptance criteria (dimensional checks, coating evaluation, mechanical tests, and sampling).
• Ordering information including unit system (inch‑pound A761 or SI A761M), plate thickness, corrugation profile, coating class, and any special fabrication instructions.

Typical use and users

Used by civil and structural engineers, manufacturers and fabricators of corrugated steel structural plate, municipal and highway agencies, drainage and utility contractors, and procurement/specification professionals. Typical applications include storm drainage pipe, pedestrian/vehicular underpasses, culverts, utility tunnels and other field‑assembled corrugated steel structures where bolted seams are acceptable.

Related standards

Commonly referenced and related ASTM documents include: A760/A760M (corrugated steel pipe), A796/A796M (practice for structural design of corrugated steel structural plate pipe), A807/A807M (practice for installing corrugated steel structural plate pipe), A979/A979M (concrete pavements and linings in corrugated steel structures), and A1113/A1113M (polymer‑coated corrugated plate). These related standards cover design, installation, coating alternatives and lining practices that complement A761/A761M.

Keywords

corrugated steel, structural plate, zinc‑coated, field‑bolted pipe, pipe‑arch, arch, culvert, culvert plate, bolted lap seam, coating class, interchangeability, A761, A761M.

FAQ

Q: What is this standard?

A: ASTM A761/A761M‑25 is the ASTM International standard specification defining material, fabrication, coating, dimensional and inspection requirements for zinc‑coated corrugated steel structural plate used to make field‑bolted pipe, pipe‑arches and arches.

Q: What does it cover?

A: It covers base steel properties, corrugation geometry and tolerances, bolt‑hole punching and interchangeability, zinc coating practice (applied after fabrication operations), fasteners and accessory materials, testing and inspection, and ordering conventions in either inch‑pound (A761) or SI (A761M) units. It does not address bedding, backfill or final structural design for earth loads.

Q: Who typically uses it?

A: Civil/structural engineers, manufacturers and fabricators of corrugated steel plate, contractors installing culverts and underpasses, municipal and transportation authorities, and specifications/procurement teams.

Q: Is it current or superseded?

A: The A761/A761M‑25 edition is the current (2025) edition as of its publication and supersedes the prior (2024) edition.

Q: Is it part of a series?

A: Yes — A761/A761M is part of a family of ASTM standards covering corrugated steel pipe and structural plate systems, including related design and installation practices (for example A760/A760M, A796/A796M, A807/A807M, and A979/A979M) and alternative coating specifications (such as A1113/A1113M).

Q: What are the key keywords?

A: Corrugated steel; structural plate; zinc‑coated; field‑bolted; pipe; pipe‑arch; arch; culvert; interchangeability; coating; A761; A761M.