2801 LOMBARD AVE 2016-01-01 MF Import

2-3' dlemeter peAorated Irdpatlon tubee (Flpure 9- 13). The suAace of ihe pit, In areas where loot and wheel trafllc are heavy, 16 cpbbled In 2-4' of _ sand. The euAace may aleo be mufched, plaMed wllh a pround cover or be left for a sward to prow where iraHic Is not excessive and adequate moislure is avallable. As disr.,:ssed by Ufian, the laryer ihe soll volume, the qreater tha potential root growth (See Flpure 8-8). ConsequeMiy, the tree le subJect to lese water and nutrient Induced stress and prowe lester and larqer. To ezpand Ihe rcatinp volume, Urban suppeste expendirq the excaveted sai pt G�(,�(a�{'r under ihe aidewalk and surroundinp cemeM, where M�LG� �� posslble (Flpure 9-14). Trees Ihat have been prowing well, surrounded by ooncrete have root systems that have 'broken out" from Ihe oripinal excavated plantirq hole IrHo . surroundinp soile, Increasirp thelr waler and rwirleM absorbirq capadtles. It Is adNseabie to create root "break oute" by desipn. A apace u�der sidewalke, walls and other cement structurea (See •, � Flpure 9•14) to albw roots to prow irno ad�acer» eolle such as parkways, plarnlnp bede, lawn areas, flreenbefle, elc. Provldinp well conetrucled break � $�� out channels lor roots lo escape the cemem bound UNGIy i4sia�7 1� p�arninp pi improves by marry roa �ne �ree•s n' � J chances of eurvlval and potendal for nortnal, rapid, LC�'�f�G� E�}� healthy growlh. Figure 9-10. Plamirp a Bare Root Tree As shown In Figures 9-11 and 9•12 cement casinps and tree pratea are oflen recommended, wreMnp wlth plantlnp eoil as deecribed eaMer In ebnp wfth metel trunk proteclore, to oover the thle chaper. In areaa recehArq moderate foot suAace of the planUnq p8. EBective in preveMirq Ua1Hc, turtblodc o( enqlnesArp mat can be lald so11 ��►�P�n end redudnp vandaAem to ihe tree dam on top ol A prepared bass over ths baddlM trunke, tHe hardware Ie very expenelve and enda end the erea eeeded w11h praee. In areas ol up damaplrq treee and restrlctinq prowlh atter hsevy pedeel�len traMc, modular pavinp meteAale several yean. The problem7 MalMenance crews wch ae precast pavers, brk�c or oobblet can pe and dty budpets do not provide replacemerrt used. SN modular pavers on 2 to 4 inch�t of flrates end cemeM cove��n with 18ryer truNc wid adJecenl to tnse and ovar the top ol root W�nlrps and ae ihe trunk prowa It becomee area. THt allowt water, alr, arM nulrlenle to aroled by the exlsUnp cover. :.and bedded pavlrp resch the roots. However, In meny urben ��e ere a lese expensive and nondamepinp elluatbne, buelnsa� dlMActe, and parWnp bte, foot efteinative. Ukewlae, metel trunk protectom and veldcks tral8c ie heavy end epsa le at e damape tr�nks or lower Nmbe the,v were oripinaty premlum. Pourod pevlrp to witMn 24 inchee of desipned to protect. Do not uee these lypes of ths truNc le the oommon aNhaqh mlNmal ��aro when plaminp trees In cemenl bound etenderd. ConeequentlY, smaN P��O P� with aarrtlnp areae. tree qratee or preCast coAars are typlcaNy spedfied. AMhouph not Iderl, treee can eurvive I� eddtlon, the iMeAace boundary between the and pmw — albeN sbwy — ur�der theee aon8ned plarnirp aoll sumoundinp the root ball and the prowinp condilbrro. Two examples ol very selected materlal lor the tree pN may be a� bartfer eophleUCate7 tree pit deelpne are Illustrated in preverHirq root yrowlh IMo the e�ire area ol the Flpuree 9-11 and 9-12. pil (See (Ipure 9-12). Another IrrieAace bebw the root baq wlll sbw water movemeM, redudrq the Europeans euccesefully yrow trees to maturNy dralnape and aeration corWitbns requlred lor ioot In excavated sdl pite and laq trenches eur- growlh. When poselble the tree pit should C�e rounded by concxete. The pits ere weN drelned, desipned to albw apporximately one toot of radial fiAed with coarsely apprepated sdl and IMted with rool space per Inch of irunk d(ameter at maturlty. -145-