A-A-1234 Box, Shipping (Wood, Nail, And Lock-Corner With Full Cleated Ends And Butt Joints) (Box; Top-Bottom, Sides, Or Ends)This description covers new nailed and lock-corner wood boxes with full cleated ends and butt joints, assembled, knocked-down, or box parts (top-bottom, sides, or ends) for use as overseas shipping containers.

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TABLE II. Standard grading rules for lumber

RULES	GRADE
Standard Grading Rules for Canadian Lumber	1 Common (Colonial-WW pint)
Standard Grading Rules for Northeastern Lumber	No. 1 Common (30.11 WWPA)
Official Grading Rules for Eastern White Pine, Norway Pine, Jack Pine, Eastern Spruce, Balsam Fir, Eastern Hemlock, and Tamarack	1 Common
Standard Grading Rules for Southern Pine Lumber	No. 1 Boards
Standard Grading Rules for West Coast Lumber	Select merchantable-boards
Standard Grading Rules for Western Lumber	1 Common (Colonial IWP)
Standard Grading Rules for National Hardwood Lumber Association.	1 Common

TABLE III. Acceptable Lumber Species

Aspen	Magnolia
Basswood	Pine (except southern yellow pine)
Buckeye
Cedar	Redwood
Chestnut	Spruce
Cottonwood	Willow
Fir (true firs)
Douglas fir	Tamarack
Hemlock	Western larch
Southern yellow pine

TABLE IV. Requirements for battens*

Thickness of top or bottom***	Maximum length of unsupported span**
Inches	Inches
3/8	21
1/2	30
5/8	38
1	45
1-1/4	50

* Battens not required when top or bottom is made of one piece of lumber.

** Distance between ends or from edge of a batten to the end.

*** When skids are required bottom battens are not required.