3040 TULALIP AVE 2016-01-01 MF Import

� STR�I:'CS AND IiELATED WORK 'he contractor shall have sufficient space available so that he can select from among a number of stockpiled rocks for each space in the rock wall to be filled. Rocks which have shapes which do not match the spaces offered by the previous course of rock should be placed elsewhere to obtain a better fit. Rocks shall be of a generally cubical, tubular or rectangul,v shape. Any rocks of basicaily rounded or tetrahedral form shall bc rejccted or used for filling large void spaces. The first coursc of rock shall be placed on firm unyielding soiL Thcre shall bc full contract behveen the rock and soil, which may rcquire shaping of the ground surface or slamming or dropping the rocks into placc so that the soii foundation conforms to the rock face bearing on it. The bottom of the first course of rock shall bc a minimum of hvclvc (12) inches below the lowest adjaccnt site gr:�dc. As the rock wall is conswcted, the rocks shall be placect so that there are nu continuous joint planes in either the vertical or later�l direction. �Vhenever possibic, cach rock shall bear on at least two rochs bclow it. Rocks should be placed so that there is some beming bchvecn tlat rock faces rather than on joints. Joints bctwcen courses (thc top surface or roch) shall slope back towards the cutface and away from thc rock wall. Because of the nature of Ihe product used to construct a roch wall, it is virtually impossible to avoid crcating void spaces between individual rochs. 1Vherc voids of greater than six inches in dimcnsion exist in thc facc of a rock wall, thcy shall be visually examined to determine if con[act behvicen the rochs exists within thc thickness of thc rock wall. If thcrc is no rock contact within thc rock wall thickncss, thc void shall oc chinkcd with a smalicr piccc of rock. A rock drainagc filtcr shall bc installed bchvicen the rcar face of thc rock wall and the soil facc bcing pro�ected. This drain rock I�ryer shall be at Ieast twclve (12) inches thick. For rock walls eight (S) feet in height or hi�hcr, it shall be at Icast cighlcen (lS) inches thick. The material for thc drainagc filter shall be 7uany Rock, as specificd in Section 3-20J of thesc Specifications. 3-1( NIL'I'�AL HAND lUU1.INGS 3-lCr.l DGSCRIP'C[ON This section applies to providing and builJing met:il hand railings that mect thc requirements oP the Pl�ns, thesc Spccifications and thc city cnginccr. 3-1(r.2 �1:�'CtiRIALS Ni;itcrials shall mcc( thc rcyuircmcnts of thc followin�: Orn:imenlal li:�ndrail Orn:micntal handr.iil shull bc consuuctcd in accordancc with Standazd Plan No. 326 and thcsc Spccifications. F[orizontal rails and vcrtir.il support posts shall be l'h inchcs bv l'/z inchcs by I/3 �nch tubular stccl cunforming ro ASTVI A120. Balustcrs shall Uc I/2 inch by U2 inch and thc ho�izont�l buuom rail l-l/3 inches by U2 inch by I/S inch channel steel (AST�I A120). �'ertical support �os!s shall Uc :� maximum S fect on center .md balusters a maximum 4 inches clem-space. The center of[he bottom rail sh.�n t�� 1 �,,:�.��„��» a ��,�n�s at�� r�,�si,�a ;;�:�dc. Finishcd height of thc railin� shall bc 42 inchcs abo�c the pcdesuian walking surface. Providc slip joints :u stainvay expansien joints and at 2�4 feet on ccntcr ma.cimum. Pc�icstri:ui FlancL:iil (Gukaniud 5tecl and Aluminum) Gal�anized Steel and rVuminum pedestrian handrail shall be constructed in accocdanee with Standard Plan Nos. 32� and 325r� and thesc SpcciCications. I-Iorizontal rails and vcrtical support posts shall bc I- I/' inch diamcter Schedule -40 Star.dard pipe and balusters shall be 3/4 inch diameter Schcdule d0 Standard Pipe. Vertical support posts shall be on 3 Foot centers and balusters on 4 inches clear spacc. l�inished hci��ht oP Ihc r:iiling shall be 42 inches ;ibove the pedestrian walking surfacc. Provide slip joints at stainvay cxpansion joints ,m�l at 2�1 (ee[ on ccntcr maximum. � ,/ i- STANDARDS 3-15 Rev.4/02 �'