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_ <br /> Th-cre arc vpec-i f 1c S;tualiolvc;%%]I ich k%i I I ir]clic a�c wI lot Ificr-;i �tciii or hi-an ll har,,l jjii LwII1 viI. <br /> 1110dCr ale potelitial w fail: <br /> ,1 High Mire polerttial: <br /> 1 f crack anes co m ICIN. shrolig 1 the �telll nr <br /> b -inch, YOU nla�•he ahlc fr1 detect 1110 elllerrt fit <br /> ' e`1eli s ect, <br /> ec t i 011(if wood. <br /> 2) Stein Inic, 2 cracks oil dic, g1'lrl1C searllcrl( w'111 i2 <br /> �. <br /> cavity or exlengivc clec;1v orl the ipsiLle. <br /> r , ro Ill�llrrrrrr rrrrrrrll illll <br /> ) Ste i hac;l crack ill crl <br /> r lc t wi} l aPc?r,orrt l jr j rc r�- <br /> 1 canker.decay, esk r:rr cIr. rrllt l. ,�i����f�'.•... <br /> AME t <br /> . <br /> 41 4"or larger•hr;lnch arry cr:rck, Rc ni 0 �r,f v <br /> Y - - <br /> [lie cracked brarlch, <br /> i <br /> ..s <br /> 5) C'orlifcr stcfn Nis i <br /> crack tllilt Nis irlrollod h.�r-k <br /> 1 <br /> � Mill the inlerruil eyli ider iif• <br /> r � <br /> wood i,;gr 1tl e or e x ten- <br /> i - 1 v dec~ave(L <br /> t y <br /> I r <br /> NIfaderate railure <br /> w potential: <br /> „! x) l-1,rrcl-wood -;10111 ha;; I <br /> r� �1*rc''tlrrrt r.s rr,tst�t-rcrtr f�tr'I r C rae k t l va l l any y i n r-o i i e l <br /> �7��r�t r��~c���ear r rcrs tr Sri, le h-,i r•k and the i rl l o r•i a l <br /> potenricrl.it'rerflare. Here. c v l i 11der of wood i; �p��ryc, <br /> tyre crew has e.rterr.sive1� - <br /> devayed%voorl behind if as <br /> - or extensively clee-lN•ecl. <br /> indicated hvther 17711shy-fl nu. <br /> II„ 77ri.s ash.stem has tirn c1 arks with <br /> light visiNe?through Meg rrac-k s. <br /> Note they thin.sireits of woeid <br /> supporting the ti•c e. <br /> ryIU <br /> fL v,, , ~T <br /> lY; <br /> A wr r <br /> , Sy " A BRANCH UNIONS,. <br /> VIII f <br /> 1, <br /> Branch union=fork� k in the stem or union of two or more <br /> main branches.anehes. A weak branch union is st rtxetu rally <br /> „ unsound because bark lavers <br /> are mgr-own,in usher words, <br /> � hark hai formed*node i h e wwA in the vrnr rt. The fcrm for <br /> ,.4A tht t rrrdudo-fi h;jO I.'nhkf:%t owl. ha try h;r: no jxr m-r h fry id <br /> the hranches together. Aq more and more hark is included <br /> inside file tree.the remaining woody connections hetweert <br /> , <br /> hmc nehes can't skapport the weight cif the braiich and the weak <br /> Union f, 1s. The branch breaks riff or I fie tree splits open. <br /> Y <br /> g Weak unions are c haraeteri7ed by an aecrte angle between the <br /> stems(V-shaped connection).the presence of Included bark in <br /> the union and by the presence of i nrolled hark on the brans <br /> U, <br /> .. hark ridge. Often,stem tissues are sunken imnledlately below <br /> the branch of a weak union. fee �t� <br /> r~ rgrarn on page 23. <br /> W s �'�� �i� w u � @ i rt R A, Q <br /> A" rye w"°r'�t,�,r��tr rr�r°�1 a ��,; ��rT f ire��rtcrttl"t"volt i.t��.�r���•t��,,.�rse r1V����a����"��4�,J qx'iwny, <br /> �t <br />