GOST 8486-86 PDF

Full title and description

GOST 8486-86 — "Пиломатериалы хвойных пород. Технические условия" / "Coniferous sawn timber. Specifications". An interstate (GOST) standard that establishes technical requirements, grading, nominal sizes, tolerances, marking, packing and acceptance rules for coniferous sawn timber intended for general industrial use and export. The standard excludes special-purpose resonance and aviation timber and provides definitions, dimensional systems and allowable defects for boards, beams, bars and unedged (rough) sawn products of coniferous species (pine, spruce, fir, larch, cedar, etc.).

Abstract

This standard defines classification (sorts/grades), dimensions and tolerances, moisture and quality requirements, defect limits and marking/packaging rules for coniferous sawn timber. It is intended to harmonize production, inspection and commercial description of coniferous sawn lumber for domestic use and international trade, and to provide a reproducible basis for acceptance testing and labeling.

General information

• Status: In force (Interstate GOST; original approval 30 September 1986; effective date 1 January 1988) with subsequent amendments.
• Publication date: 1 January 1988 (designated as GOST 8486-86; approved 30 September 1986).
• Publisher: USSR State Committee for Standards (Gosstandart); later distributed by national standards publishers (Standartinform / national standards bodies).
• ICS / categories: 79.040 — Wood, sawlogs and sawn timber (Wood technology).
• Edition / version: GOST 8486-86 (1986 designation). Includes recorded amendments (examples: Amendments Nos. 1, 2, 3, etc., issued in the late 1980s–1990s).
• Number of pages: 9 (typical published text length for the normative document).

Scope

Applies to sawn timber produced from coniferous species and intended for use in the national economy and for export. The standard covers edged and unedged sawn timber (boards, bars, beams, planks), establishes nominal sizes and permissible deviations, sorts/grades with permissible defects, marking, packing, acceptance and testing procedures. The scope explicitly excludes specialised resonance and aviation timber for which separate technical requirements apply.

Key topics and requirements

• Definitions and terminology for types of sawn timber (edged, unedged, boards, beams, bars) referenced to related GOST terms.
• Grouping by species — coniferous woods (pine, spruce, fir, larch, cedar, etc.) and designation rules in product marking.
• Nominal dimensions and permissible deviations (thickness, width, length) with length gradation rules for internal market and export.
• Sorts/grades (1st, 2nd, 3rd, 4th and selected grades) with quantitative limits on knots, cracks, rot, resin pockets and other defects per grade.
• Moisture content categories (natural / transport / kiln-dried regimes) and related acceptance criteria for delivery and export.
• Marking, labeling and designation format (including species, sort, cross-section, length and standard designation).
• Packing, storage and transportation requirements to preserve quality (stacking, end-protection, moisture protection) for domestic and export consignments.
• Inspection and acceptance rules: sampling, measurement of dimensions and moisture, visual grading and allowable defect tolerances for each sort.
• References to related normative documents and test methods (other GOSTs for terminology, dimensions, defects and testing).

Typical use and users

Used by sawmills, timber processors, exporters and importers, wholesalers and distributors of lumber, timber merchants, construction companies and joinery manufacturers. Also referenced by quality control laboratories, customs and inspection authorities, procurement specialists and designers specifying material properties and commercial descriptions for projects and contracts.

Related standards

Commonly cross-referenced standards include GOST 18288 (terms and definitions for sawn timber), GOST 24454 (nominal sizes and tolerances), GOST 26002 (grading/assortment rules for rough lumber), GOST 2140 (sorting by defects), and other GOSTs covering sampling, moisture determination and packing. Internationally relevant standards on sawn timber dimensions and grading (for comparison) include ISO standards for sawn timber and EN timber standards used in construction.

Keywords

GOST 8486-86; coniferous sawn timber; lumber; boards; beams; grading; dimensions; moisture content; marking; packing; USSR standard; sawn wood specifications; pine; spruce; larch.

FAQ

Q: What is this standard?

A: GOST 8486-86 is an interstate technical standard titled "Coniferous sawn timber. Specifications" establishing requirements for coniferous sawn lumber (dimensions, grades, defects, marking, packing and acceptance).

Q: What does it cover?

A: It covers edged and unedged sawn timber of coniferous species — boards, bars, beams and similar sawn products — specifying nominal sizes, tolerances, sorting by grade, permissible defects per grade, moisture requirements and rules for marking, packing and acceptance for domestic use and export. It excludes specialized resonance and aviation timber.

Q: Who typically uses it?

A: Sawmills, timber processors, exporters/importers, traders, construction and joinery firms, quality-control and testing laboratories, procurement and customs authorities use the standard for production, specification, inspection and trade of coniferous sawn timber.

Q: Is it current or superseded?

A: GOST 8486-86 was approved in 1986 and came into force 1 January 1988, replacing the previous edition (GOST 8486-66). It has recorded amendments issued in the late 1980s–1990s. In practice it continues to be referenced where national/interstate GOSTs apply; users should check their national standards body or current regulatory lists for the latest applicability or any national replacements.

Q: Is it part of a series?

A: Yes—GOST 8486-86 is part of a suite of timber and wood-product standards (terminology, sizes, grading and testing) and is linked by references to related GOSTs that together define sawn timber specifications and test methods.

Q: What are the key keywords?

A: Coniferous sawn timber, lumber, grading, dimensions, moisture content, marking, packing, GOST 8486-86, pine, spruce, sawmill, export specification.