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Speeifications <br /> Speeifieation Guidelines: Geogrid Reinforeenrent Systems <br /> SECTION 2 B. Qn geogrid to design�d embedmen�lergth and place on <br /> PART 1: GENERAL �op ol ALtAN BLOCK to back edge of lip. E�tmd <br /> ��� �,y� horizontally on compacted backfill. <br /> Work includes lurnishings and installing geogrid reinforcemenl, C. Place neKt course ol ALIAN BIOCK on Iop ol grid and fill <br /> wall fill, and backfill lo Ihe lines and grades designaled on Ihe block cores with drainage lill to lock in place. Remwe <br /> construclion drawings and as specifietl herein. slack in grid arW stake to mainlain lension. <br /> 1.2 Appliqbl� S�etion of RNal�d Work D. lay geogrid el lhe proper eleva�ion and orienta�ions shovm <br /> Section 1: ALtAN BLOCK Motlular Relaining Wall Sys�ems. on the conswc�ion tlrawings w as tlirecled by the Engineer. <br /> 7.3 R�f�nnq Slandards E. Correcl orientalion(sVength direction)of Ihe geogrid shall <br /> See specilic geogritl manufanurers relerence standards. be verified by Ihe contrac�or. <br /> 1.4 DNiv�ry, Storeg�, and Handling F. Follow manufacwrers guidelines for werlap requiremen�s. <br /> A. Conlractor shall check Ihe geogrid upon delivery to assure �•4 Fill %at7m�M and Badtfill Mapm�nt <br /> Ibat the proper material has been received. A. Backfill material shall be placed In lifts and compacted as <br /> 8. Geogrid shall be stored above�20°F (�29°C). specified under Section 1, Part 3.4, Unil Inslallalion. <br /> C. Conlractor shall preveN«cessive mud, wel cemem, or B. Backfill shall be placetl,spread and compacted fn wch a <br /> olher(oreign materials Irom coming In conlacl wilh manner thal minlmlzes the developmenl of wrinkles In <br /> Ihe geogrid malcrial, and/or movement of Ihe geogrid. <br /> PART 2: GRID MATERIALS C. Only handopera�etl compadion equipment shall be <br /> 2.1 DKnitionf allowed within 3 Iee1, (.9m)of lhe wall face. <br /> A. Geogntl proAcu shall be d high darsily�aly�.UryM�e a pd�cqv D. Tracked construnion equipmenl shall no�be operaled <br /> yams encapsulaled in a prolective coating specifically direclly on the geogrid. A minimum backfill Ihickness ol 6 <br /> fabricalea for use as a soil reinforcemenl mnterial. inches(150mm) Is required prior lo operation ol tracked <br /> B. Conaete relaining wall units are as delalled on the drawings vehicles over lhe geogrid. Turning of tracketl vehlcles <br /> and shall be ALIAN BLOCK Rclaining Wall Unils. shoutd be kepl lo a minimum lo prevenllracks from <br /> C. Drainage malcri�l is frec draining granular material as displacing Ihe lill and tlamaging Ihe geogritl. <br /> defined in seclion: Modular Concrcle Rclaining Wall E. Rubbcrdired equipment may pass over lhe geogrid <br /> sysiems as"Drainage Ma�erial." rein(orcement at slow specds, Iess than 10 MPH <br /> D. 6acklil� is Ihe soil used as fill br Ihc reinlo¢ed soil mass. (16 Km/Ff�, Sudden braking and sharp turning shall <br /> [. f'oundation soil is Ihc in�silu soil. bc avoided. <br /> 2.2 Produets F. The backfill sha�l be compacled to achieve 9096 slandard <br /> A. Geogrid shall be Ihe lype as shown on the drawings proctoc Soil lesls of the backfill malerfal shall be wbmitled <br /> having Ihc propeny requiremcrns as described within Ihe to Ihc Enginecr for revicw and approval prior lo Ihe <br /> manufacWrers specificalions. placr.menl ol any backfilL ihe contraclor is(ully <br /> 2.3 Aeeeptable Menu(aetunn responsible for achieving ihe specified compadion <br /> A, A manufadurer's protlua shall bc app�oved by�he engineer. requiremems. The Enginecr may direct the wrnraaor lo <br /> PART 3: WALL CONSTRUCTION remove, correct a amend any soil(ound not in <br /> 3.1 Foundation Soil Preparation compliance wiih these specifications. <br /> A. Foundalion soil shall bc e:cavaled lo Ihe lines and grades SPECIAL CONSIDERATIONS <br /> as shown on Ihe constmclion drawings, or as direcled by n. Geogrid wn be interrup�ed by periodic penelralion of a <br /> Ihe Engineer. column, pier or looting slmcWre. <br /> 8. Foundalion soil shall be ezamined by Ihe Engincer lo B. ALLAN BLOCK walls will accepl vertical and honzomal <br /> assure Iha1 Ihe actual fountlation soll strength meeLs or relnbrcing with rebar and groul. <br /> exceeds assumed design strenglh. C. If site contlitions wi�l nd allow geogrid embeCmenl lenglh, <br /> C. Overexcavaled areas shall Ue lilled wilh approvetl consider the fo�lowing altemalives: <br /> compacted backfill material. • Masonry Reinforced Walls • Soil Nailing <br /> D. Poundation soil shall be pwof rolletl prior lo lill and • Earth Anchors • Rock Bolts • Increased Wall Batler <br /> yeogrid placemem. 0. Al1AN&OCK can be used In a witle vanety d walfx apptications. <br /> 3.2 Wall Conslruetion <br /> A. Wall conslruclion shall be as specilied under Section 1, Conwlt tha Allan 61aek T�ehnieal S�rviq D�partm�nt <br /> I'art 3, Wall Construaion. for details. <br /> 3.3 Geogrid Installation Specilica�ions subject�o change wiUioul notice. <br /> A. Ins�all ALLAN OLOCK wall to designa�ed hcigM ol first <br /> gcogrid layer, bxkfill and compacl Uchind wall lo deplh hgHNICAI SUPPORT <br /> equal Io designed griA length. For engineering and lechNcal asslstance on projens Ihal <br /> fall beyond Ihe scope ol lhese guidelines, conlact the <br /> ALLAN 6lOCK CORPORATION at l00-l99-6�09. <br /> 20 <br />