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HomeMy WebLinkAbout11.97.C3O> 'U. r- �_ Q� } a �� W w- r �1 S Q v Q u) W m i (i r/i i� K t ,. n 4'•a' u �i G�}�G• �t�E�,�4LK W/ r��Al.Et� �XI�'�*N`a'� e%/� � �'' /�o V� W I�'1 ,� �1 O I N �t' 1 r � i I v `'--+ - ...� � �u �oF''1 F�7 �t� -- �c c5t�►N. I���L /" L St,oP�v 4'' GONG• f�Al'tP Got�PA�TEb � �. v�// �x� � %e W v�M FILL �F�TIoN ��P,u 0,! To � ►,011 �l.oti ot� To 41 -0' i Q � i`'� '�" _ .._ 1 , y--- -- � ► — ¢� GoN�• NaLK G4RaW Jl�•k Ki �L :0 M AcG'frD FI u- �, ©, � r _� ._.._- ... _ r i_._ _ �---. __ , r � Z � .' - � � / / \ O • // \ ' r - � �� - - . .�� . �, � ��N ���,� ��� -��r � �oJ � � � 3 0, o. �� .. �, � ' M • SPECIFICATION GUIDELINES KEYSTONE CONCRETE MODULAR RETAINING WALL SECTION 02276 ■ PART 1� GENERAL t 01 DESCRIPTION ''� �'`•:' A Wurk �nr;tuclp'� t�;rn,tshln+� and Instatting mOQUlar 8. talaC@ rECOmmP_nded Ili' behind thP. rC+talnrr� L=am" htC�Ck rpt8,r�lnq wait un +ts !n the Imes and grades wall units designated on the rc�nstruction drawings and as Z OS oACKFIII Sperl +led herein ' g, Wnrk Inc►udes preDAring foundation soft, fur A. Material shah t7es Insitu soils when approve0 by r - ,tshing and Ir.statirng leveling pact, unit till and the engineer unless otherwise specified In the � haCkfl!t to the 1 +nes and grades designated on drawingf. Unsuitable soils for Dacktilt (heavy me construction drawingf stays or organic sobs) shall not be used in the backf111 or in the reinforced soil mass. C. Furnishing and instatting ail appurtenant mate- 8. Where additions! fill is required contractor shat' r,at� +PQU +ret1 for COnstfUC.tror �f the retain +rig l`7����' N�Ii es shown on the conStructrOn drawinga submit sample and spec +fications to the crier' - �� „ f seer to determine if acceptable f*�.'"+�"z1;�« t 01 RELATED WORK � � � � ~• A. SRs:rion 022'5 - Ge09rid Sr�it RBinf7rCement � � •,� -• �••� ■PART 3: EXECUTION ,� � �+��'�,� 1.03 REFERENCE STANOARD8 ____. e ,�►' � i v i •' � -+ „ �„ �'" A ASTM C9G — f3� Hr�ilr�rw �oac: Bearing Masonry 3.01 EXCAVATfON ..... w#� �,�. ��,,. � p, �;.,,ts A. Contractor shall excavate to the tines and (� aSTM {'r +C) - '4 Sar*tpting anct Testing Con grades shown on the construction drawings -rata Masonry Units ©ver excavation shalt not be paid for and C AS?M Ct,'?- -Hti Solid Lead Bearing Concrete replacement with compacted fits andJOr wall MasC?nry Unt'a system components will be required at contras s' for expense. COntraClOf shah be Careful not to t 0� DELIVERY, 3TORAOE AND MANDt.tNf3 disturb embankment materials beyond Imes A. �;r,ntraCtCrr shad check the rnaterlals upon shown.. delivery to assure that proper material has t`)een 3 � FOUNDATION 8011 PREPARATION rgr,q +ved 8 ( "�r�>ntraCtc7r shah prevAnt excesatve mud, wet ce- A. Foundation soil shall De excawted as required men;, epoxy. and tike materials which may affix far tooting dimenflons shown on the Construc- themsetvc+s 'rnm r_oming in contact with the ttor+ drawtngs, or as directed by the Engineer. W k materials d. Foundation sa11 shall be examined by the ` ��.-•- �� � C. Contractor shat) protect the materials from Engineer to assuro that the actual toundatlon ��"' ' . r damage. Damaged mater,at shall not be incor soil strength meets or exceeds assumed des►gn ��_ � siren th. Soils not meeting required strength pit +at}t4 Into the fetalninp wall structure g i shalt be removed and replaced wtin acceptable • 1.0'5 SUBMITTALS material A Samples at apt pr�xjlJCts used in the work of this C. Over excavated areas 3hal! be filled with ep- �*t ,.. � Se<:tiC3n proved compacted backtill material. f "', ,�'` 8. Latest tdltlon �)f manufacturers specifreations for proposed materials, rneMod of installation 3.03 BA8E IEVEIIN© PAO and i +st of material proposed for use A. l.eveiing pad materials shall be placed as shown 1.08 QUALITY A38URANCE on the construction drawings, upon undisturbed insitu soiif, to a miMmum thickness Of B inches. A, Soil testing and tnspechon service for quality g. Material stroll De compacted so as to provide a control leafing during earthwork operat►ans will level hard surface an which to place the first be supplied by the owner. course of units. Compaction shall be to 85'/0 of ■PART 2: PRODUCTS standard proctor br sand or gravel type mate- - - - -- -- -- rials. For crushed rock, material ihatl be densely 2.Ot CONCRETE UNITS compacted. A. Masonry units shall f>e Keystone" Retaining C. leveling pad shalt be prepared to insure come Watt Units as manufactured by ___�__�_____- plate contact of reta►ning watt unit. with bash S. Concrete ws►I units shaft haw a minimum net ?B D. Levsltng pad matsrisfs shalt be to the depths day compressive atrenglh of 3000 psi. The con- and widihf shown. Contractor may apt for using crate shell have a maximum moisture absorption reduced depth of sands, gravel o+ crushed rock of 8 to 8 lbslft/ using •concrete topping. Concrete shalt be un C. Exter+cr dimensions may vary in accordance reinforced an4 a maximum of t' to 3' thick with ASTM G8Q — 8.5. Standard and Compac 3.W UNIT INBTALIATiON units shall have a minimum of t square foot Lace area each Mini units shah hav*3 a minimum i!? A. Frrat course of concrete welt units shall tie � 3rluare fr�ot face Area each. placed on the base teveling pad - TIN units shat) 0. Keystone Standard units shalt provide a mini• t}e checked for level and alignment The first mum of 15r? psi of wall face area. Fill which is course is the most important to r ^furs accurate .. . � ` �i)ntalned within the dlntensions Of the unittt and aCreptabis re3Wts ', - :. may � t'nns►derAd a! 80 °r« effer;tive weipnt 8 tnfure that units are In fui! COr'rtaCf with base E �,_in rq seas+ !�a�ve a ^q +� s►rt �'+�t�at�f.� nr ,_�bn C 4.lntt' a!a placed aide by side for +uli tanpih or awe ,t� ;, , ,+�+� x;ar�:�arar ,.:�.��•'+ w -.w a wall a ►iQr►ment ANgnmsnt may be dor►e by ,. , , � ••Iwgans of a string tir►e or offset from base fine _ +, nrn ?,,� et t � �;< -�, ark `9 tNl� (j irs'talt ltosfglasf ccynnetting prof anti fill all ,n a,�,�,�,r- �, �Y�. „��,� ,'a�, Ur: -1�, vtald+l at units wish unit flit material Tamp tilt ,� K :I= Itl� silos' t� ;ttgrlr�kA(! w +tn non i^r)rrr)Srvlt E, Sweep alt exCirti! material from tOp of units and t,bPra�lafts pens install next Course 'nfUr� each CUtJrse is rvorT' '�t �► '! j G. finite shall (fie +ntertockpd as th provide a mini plate +y unit f,ttsd, backfitse0 and compact�►ct mun� tr,1 Inch setback per each course or watt prior to prnceed/ns� tiJ next Course height F lay up each course +nsuring that pins aroa�utse . _ � rYC7 �f Wherp epl }Iit;at)le. IerC) set[)ric w r:N E >nw Into adjoining courses abUve a mMtmum 6f .one �,� h '<,�tback per rt;urse iJt)tlons can be used Inch Two pins are required per unit Putt eac+` 2 0? FIBERGLASS CONNECTING PINS unit forwar�� away from the embankment against pens In the previous course and Dackf,I; A t'•,rnectinp (}In8 shad t'k+ tl? +nr,h d +rtmeter then aS the CourstJ 19 f,ompNeted w8peat proCedurP tr �� .� �nr;gNt laopthallc poiyAStPr rP9 +nrputtrliffPr? the exlP,nt nt welt hP, +ght r,h(arr)iASa rpintrZr <�ament rnr ?s Q. A3 appro�rlate wher@ the wail changes @lava' B tons Sh�!i have a mrr;IRtum ItAxural strength of lion. units can be stepped with grade o+ turned ' � � +.Nit; ()s? anr' t�hc7rt C►eArn v►!PAr ref gai')r') p1l Into the embankment with a cony @>t return end t iii` ? 03 BASE LEVELING PAO MATERLAI Provide appropriate bused units on compacted A Materrii shaft �r,rtg+gt f�f �:om(iACte*1 Sartd !evr� ling pad In area O! ct)nvex return end rev +•1, [.ru9he(t rrx k rJr 1AV(lllr +g I r)r)CretA r'lon ) OS CAP INSTALIATtON rwlnfrl +Cad! �!1 Shr)wn r.)n c:ont3lruCt +r)n drawing A. PtaCA K @ysif�ne Cap unllS c)ver proteCtrnV {�rng the Cc�m(;aCied ievellnA part shat{ be a minimuni tram units taelow Pvll forward to set back poor �, InrhPS ►heck When (.ling a nt�r reinforccr+t +ion Sark tit! and compact to t,nlshed grade uvrr.rt r r�rrCrRtA �,; t+On, 1 • to �` thick, mefntarr t Q C` B as required, provide permanent mechanlcat r�r, ;, � :'a' Ipvf•1 nr� (t A!1 Ihlrkrr+ ;5 section to wall units with construction adhesl�H �� � +� Pubi' Grit l or epoxy Apply adhesive or epoxy to bottom StJr � A f` I: ,.,r Ar,pti q►,,7it 'lyi fr @ta rirdrftln(�` LrU'Sherj f,fC�l of Cap Unit!t and In!Statt r1I} unit� t)PInW ,, � � , •,tr,•rA tiA" t�; t %�' c:s , �,Itr!re Qrave+ ono mare 3.08 GEOGRID INSTALIATfON v.� ,f �,,. ` ,. 'clan r� "'o ShAii pa�tR !hN Nr; 2V(J filltve With A max ^� r 1 A. 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