B08_Attachment_9_-_ABS_Section_25_0001.pdf

This document is Attachment 9 to a federal contract file containing the ABS Rules for Classification and Construction of Steel Vessels, covering the period 1862-1969, with emphasis on Section 25 (Riveting) and related technical specifications and survey requirements.

Section 25 establishes detailed riveting standards for steel vessel construction, specifying rivet sizes, spacing, and material requirements across multiple thickness categories. The section provides comprehensive tables (Tables A through L) defining breadths of seams and end connections, butt straps, angle flanges, and bracket specifications in both metric and British units. Critical requirements include rivet material tests per ABS 11 to 15, rivet types for watertight and non-watertight applications, countersink specifications, and detailed workmanship standards. The document addresses riveting in plates of different thicknesses, lining pieces, and various vessel components, with specific provisions for holds, cargo tanks, and machinery spaces. Additional sections cover riveting requirements for ocean-going vessels and Great Lakes vessels, including load line markings and tonnage mark diagrams. Section 43 establishes survey requirements after construction, including provisions for annual surveys, special periodical surveys, and specific examination protocols for boilers, machinery, tanks, and hull structures. The rules mandate annual inspections of steering arrangements, valves, and ship components, with special focus on corrosion detection and structural integrity of holds and tanks. The document includes technical specifications and inspection criteria to ensure continued seaworthiness and compliance with construction standards throughout a vessel's operational life.