3206 WAVE DR 2016-01-01 MF Import

�� Speeifieation Guidelines: Allan B/oek Modular Retaining Wall Systems SECTION 1 3.2 FouMetion Soil Pnpantlon PART 1: GENERAL A. Foundation soil sha�l be excavated as tlimensionetl on mc 7.7 Seop� plans arxl compacted to a min. 9D%compaction pria�o Work inclutles furnishing and installing moaular concrele placement ol the base malerial. block relaining wall uni6 lo Ihe lines and gratles designatetl B. Foundalion soil shall be examined by Ihe Ergineer lo on the construction drawings and as specified herein. inwre thal the aclual loundalion soil Weogth meels a 1.2 Applieabl� S�etions of R�labd Work excecds assumed design strenglh. Soil not meeting the Geogrid Wall Reinbrcement (see seaion 2) requiretl slmnglh shal�be rertaved antl replaced wilh 7.3 R�f�nnq Stendards acceptable material. ASTM C1372�97 Standard Specilications for Segmemal �•1 �w Relaining Wall Unils. A. Base malerial shall be placed as shown on conuruclion 1.1 Deliv�ry, Storag�, and Handling drawmg. Top of base shall be localed lo allow A. Conlraclor shall check Ihe malerials upon delivery lo bollom wall units lo be buried lo pfoper deplhs as per assure proper malerial has been received. wall heighls and specificalions. B. Conlraclor shall �revenl excessive mud, wel cemenl, and B. Base malerial shall be installed on undisturbed native soils a like materials from coming in contact with Ihe malerials. wilable replacemeM fills compaGed al 90%standab�xoctor. C. Contraclor shall prolecl ihe malerials from damage. C. Base shall be compaded at 90%standard procta to Damaged material shall nol be incorporated in the project. provide a�evel hard surface on which lo place ihe firsl PART 2: MATERIALS course ol blocks.The base shall be constructetl lo insure 2.7 Moduls►Wall Units proper wall embedment and the final clevalion shown on A. Wall units shall bc ALIAN BLOCK Reiaining Wall units as �he plans. Weilgratled sand can be used Io smooth lhe pmduced by a licensed Manufacwmc �op 1/2 inch(12.Smm)on the leveling pad. B. Wall units shall have minimum 28 day compressive D. Base malerial shall be a 3 inch(76mm)minimum depih fa slicnglh oi 3000 psi (20.7MP)in accordancc wilh walls undcr 4 Icet(1.2m)and a 6 inch(150mm�minimum ASTM C1372�97. The concm�e uni�s shall have adeyuate depih for walls over 4 feel(1.2m). �reezeahaw proicction wiih an average absorption rate 3.1 Unil Instsllation o( 7.5 Ib/fP (720 kg/m')for northem climales and 10 A. The lirsl course of wa�l unils shall be placed on Ihe Ib/IP (160 kg/m')lor southem climates. prepared base wnh lhe raised lip lacing oul ana lhe front C. Exterior tlimensions shall be uniform and consislenl. edges light logether.ihe unils shall be checked for level Maximurn dimensional devialions shall be .125 inch, and alignmenl as�hey are placed. (3mm)nol inciuding IexWred lace. B. Insure lhal unils are in full conlact wilh basc. Roper care D. Wall units shall provide a minimum of 110 pounds lolal shall be laken lo develop straighl lines and srtrooth weighl per square lool ol wall lace ama (1,761kg/m'�. curves on base course as per wall IayoW. Fill mnlained within Ihe unils may be considered 80% C. Ail cavilies in and around the base row shall be fiiled efleclive weight. wilh base malerials and compacted, Backfill Irorn and E. Ezlermr face shall be tezlured. Color as specified hy back ol entire base mw lo firmly�ock in place. Check owner. again lor Icvel and alignmenL All excess malerial shall 2.2 Wall Rock bc swept from top of unils. A. Base material shall be well gratled compaclible D. Inslall ne�t course ol wall units on lop of base row. aggregate, 0.25 inch l0 1.5 inch, (6.4mm� 38mm)with Position blocks�o be ollsei Irom seams of blocks below. no more Ihan 10%passing Ihe M200 sieve. Perfecl"running bond"is na essential, bul a 3 �inch B. Drainage malerial shall be Ihe same as base malcriaL (75mm)minimum of(sel is recommended. C. l3acklill malerial shall be sile ezcavaied soils when Check each block lor proper alignment and level. Fill atl approved by the engineer unless othervoise specified in cavilies in and amund wall units and to a 12 inch Ihe drawings. Unsuilable soils lor backtill (305mm)deplh behind block with drainage ma�erial. (heavy clays or oryanic wils)shall nol be used in the Spread backfill in uniform IiRs nol exceeding 8 inches reinforced soil mass. (200mm). Employ melhods using lighlweighl compaclion D. Where addilional GII is required, cornractor shall submil equipmenl lhal will not disrupl Ihe stability or baner ol�he sample and specifications io�he Enginecr lor approval. wall. Hand�operated plate compaction equipmern shall be PART 3: WALL CONSTRUCiION used on ihe block and wiihin 31cet (.9m)ol wail lo 3.1 Exeavation achicve consolidalion. Compact�0 90%S.P. in backfill A. Contractor shall ezcavate lo Ihe lines and grades shown beyontl conwlidation zone. on Ihe consvuclion dmwings. Contracbr shall use E. Install each subxquent course in like mannec Repeal caulion nol to overexcavate beyond Ihe lines shown, or procedure lo Ihe exlem of wall heighl. to daWrb Ihe base elevations beyond Ihose shown. E Allowable consiruclion lolerance at Ihe wall face is 2 degrees verlically and 1 inch �25mm) in 10 teel(3m) �9 horizonlally.