The material used for determining the effect of height in tree will be tested in such order that the average time elapsing from time of cutting to time of test will be approximately the same for all bolts from any one tree.

Tests on Green Material

The tests on all bolts, except those from which a comparison of green and dry timber is to be gotten, will be as follows: 

Static bending:  One stick from each pair.  A pair consists of two adjacent sticks equidistant from the pith, as N7 and N8, or H5 and H6.

Impact bending:  Four sticks; one to be taken from near the pith; one from near the periphery; and two representative of the cross section.

Compression parallel to grain:  One specimen from each stick.  These will be marked “1” in addition to the number of the stick from which they are taken.

Compression perpendicular to grain:  One specimen from each of 50 per cent of the static bending sticks.  These will be marked “2” in addition to the number of the stick from which they are cut.

Hardness:  One specimen from each of the other 50 per cent of the static bending sticks.  These specimens will be marked “4.”

Shear:  Six specimens from sticks not tested in bending or from the ends cut off in preparing the bending specimens.  Two specimens will be taken from near the pith; two from near the periphery; and two that are representative of the average growth.  One of each two will be tested in radial shear and the other in tangential shear.  These specimens will have the mark “3.”

Cleavage:  Six specimens chosen and divided just as those for shearing.  These specimens will have the mark “5.” (For sketches showing radial and tangential cleavage, see Fig. 45.)

When it is impossible to secure clear specimens for all of the above tests, tests will have precedence in the order in which they are named.

Tests to Determine the Effect of Air-drying

These tests will be made on material from the adjacent bolts mentioned in “c” under Part of Tree to be Tested.  Both bolts will be cut as outlined above.  One-half the sticks from each bolt will be tested green, the other half will be air-dried and tested.  The division of green and air-dry will be according to the following scheme: 

STICK NUMBERS

Lower bolt, 1, 4, 5, 8, 9, } Tested
                                            etc. } green
Upper bolt, 2, 3, 6, 7, 10, }

Lower bolt, 2, 3, 6, 7, 10, } Air-dried
                                            etc. } and
Upper bolt, 1, 4, 5, 8, 9, } tested

All green sticks from these two bolts will be tested as if they were from the same bolt and according to the plan previously outlined for green material from single bolts.  The tests on the air-dried material will be the same as on the green except for the difference of seasoning.