Link points to Internet Archive / others. Not hosted by InfraLens. Details
IS 8726:1978 is the Indian Standard (BIS) for rebound wooden crates. This standard covers the material, dimensional, and constructional requirements for wooden crates intended for the packing of rebound hammers. It details the species and quality of timber, fabrication methods, and markings to ensure the safe transport and handling of the testing equipment. This standard has been withdrawn by BIS.
! This standard is currently marked as 'Withdrawn'. It should be used for reference purposes only for legacy equipment.
! For new packaging requirements, refer to more current and general wooden packaging standards like the IS 13620 series.
! The crate dimensions are specific to the rebound hammer models prevalent at the time of publication.
woodtimberfasteners
International Equivalents
Similar International Standards
ASTM D6039 / D6039M - 19ASTM International, USA
HighCurrent
Standard Specification for Crates, Wood, Open and Covered
Covers requirements for the design, fabrication, and performance of open and covered wooden crates.
ASTM D6251 / D6251M - 15(2021)ASTM International, USA
HighCurrent
Standard Specification for Wood-Cleated Panelboard Shipping Boxes
Specifies construction of crates using a wood frame (cleats) and panel sheathing (plywood/fiberboard).
BS 1133-8:2011British Standards Institution (BSI), UK
MediumWithdrawn
Packaging code - Part 8: Wooden boxes, cases and crates
Provided guidance on the design and manufacture of various wooden containers, including crates.
MIL-C-104U.S. Department of Defense, USA
HighWithdrawn
Crates, Wood; Lumber and Plywood Sheathed, Nailed and Bolted
A highly prescriptive military specification for constructing robust wooden crates, similar in philosophy to IS 8726.
Key Differences
≠IS 8726 is highly prescriptive, specifying exact Indian timber species (e.g., Sal, Teak, Hollock). International standards like ASTM D6039 group wood by mechanical properties, allowing global species interchangeability.
≠Modern international standards and practices are fundamentally linked to ISPM 15 for phytosanitary treatment (heat treatment or fumigation) for export, which is not a requirement within the original IS 8726:1978 text.
≠IS 8726 focuses on a prescriptive 'cookbook' approach to construction. ASTM standards often cross-reference performance testing standards (like ASTM D4169), allowing manufacturers to validate new designs or materials through testing.
≠The 'Rebound' (reusable) nature is a primary focus in the IS code's title and intent. While ASTM crates can be designed for reuse, the standards themselves are for general shipping, with reusability being a design choice rather than the standard's core identity.
Key Similarities
≈All standards are based on the same fundamental construction principle of a wooden frame (cleats, battens) with attached sheathing (lumber or panelboard).
≈Both the IS code and its counterparts specify minimum quality requirements for wood, such as limits on knots, decay, and moisture content, to ensure structural integrity.
≈The standards categorize crates into different styles or types based on their construction, for example, based on the arrangement of framing members or whether they are open or fully sheathed.
≈All standards specify requirements for fasteners, detailing aspects like nail type, size, and spacing patterns in relation to the thickness and type of wood being joined.
Parameter Comparison
Parameter
IS Value
International
Source
Timber Species Specification
Prescribes a list of specific Indian timber species.
Categorizes woods into four groups based on properties like density and nail-holding power.
ASTM D6039
Timber Moisture Content
Shall not exceed 22 percent at any point.
Should not exceed 19% at the time of fabrication for cleats and framing.
ASTM D6251
Plywood Specification
Conforming to IS 303 (specifies Indian grades like BWR).
Exterior grade plywood conforming to US Product Standard PS 1 or PS 2.
ASTM D6251
Design Philosophy
Prescriptive (specifies material and dimensions).
Performance-based (allows design validation through testing to standards like ASTM D4169).
ASTM D6039
Phytosanitary Treatment
Not mentioned in the standard itself.
Required for international wood packaging materials (WPM) as per ISPM 15.
ISPM 15
Diagonal Brace Requirement
Mandatory on all six faces for specific crate types to ensure rigidity.
Required based on crate style, size, and load; may not be needed on all faces for all designs.
ASTM D6039
Marking for Reusability
Requires marking such as 'REUSABLE CRATE'.
No specific marking for reusability is mandated by the standard, though it can be added by the user.
ASTM D6039
⚠ Verify details from original standards before use
Key Values4
Quick Reference Values
ScopeSpecifies requirements for wooden crates for packing rebound hammers
Recommended Timber SpeciesConforming to Group II of IS 13620
Maximum permissible moisture content15%
Minimum thickness of timber for sides, top, bottom12 mm