|
F_ ---
<br /> Owner:Compass Health TIMBER LAGGING: EXCAVATION,LAGGING AND BACKNLL•
<br /> Owner's Architect:Ankrom Maisan Architects,Inc. All lagging boards shall be untreated,In good condition,and shall be Hem-Fir R2 or better. The shoring contractor shall excavate behind the wall face and install lagging in such a manner as
<br /> �
<br /> er's Structural Engineer.KPFF Consulting Engineers to maintain a safe workplace and avoid excessive sloughing and overbreak Asa minimum,prior
<br /> Own to placing the subsequent set of timber lagging,do not excavate more than 4-feet below the
<br /> Owner's Civil Engineer:KPFF Consulting Engineers STBUMRALSTEEL,
<br /> current depth of lagged wall face and backfill voids before proceeding to the lower lift If face
<br /> General Contractor.BNBuilders,Inc All structural steel shall conform to the following requirements: stability conditions require,this height shall be reduced.All voids behind lagging shall be filled
<br /> Sharing Engineer:DBM Contractors,Inc. Type of Member ASTM Specification Fy prior to main structure construction.
<br /> Sharing Contractor:DBM Contractors,Inc, Wide flange shapes A992orA572 50ksi Lagging shall be installed from the top of the pile proceeding downward. Voids behind the
<br /> Plates,Angles,and Channels A36 360 lagging shall be filled with free-draining backfill.CDF may be used as backfill.
<br /> DBM Contractors, Inc.
<br /> Plates(noted gr.50 on drawings) A572 50ksi
<br /> 1220 S256th Street
<br /> GENERAL Pipe A53 Gr,B 35 ksi CONSTRUCTION LOADING:
<br /> The general contractor is responsible for field verifying all existing dimensions and site conditions. HSS ASOD sow At the time the shoring drawings were completed,there was no need to support concentrated Federal .83 WA 98003
<br /> material or equipment loadin If such loading is to be addressed in the future,load values and P: 253.838.1402
<br /> The general contractor is responsible for determining actual locations of all existing utilitiesg' g� F: 253.874.6574
<br /> shown on the plans and those utilities or underground obstructions not shown on the plans.The STRUCTURAL WELDING: locations must be provided prior to surcharge loading being applied to the shoring wall.
<br /> general contractor is responsible for removal of all abandoned utilities,or other underground Minimum weld size=X-inch continuous fillet.Minimum weld length 2-inches.All welding to All walls designed with a10Dpsf horizontal construction/traffic surcharge. THESE DRAWINGS AND PERTINENT
<br /> obstructions that Interfere with the new construction. conform toAWSD1.1.Use E70XXelectrodes. CALCULATIONS ARE PROPRIETARY TO DBM
<br /> CONTRACTORS,INC.THEY MAY NOT BE COPIED,
<br /> The general contractor and subcontractors are responsible for the construction process and the SHORING INSTALLATION SEQUENCE SHORING MONITORING AND INSPECTION: REPRODUCED,OR USED WITHOUT DBM'S
<br /> EXPLICIT WRITTEN PERMISSION.THE
<br /> safety of the workers.This includes but is not limited to,the construction sequence,temporary Installation of soldier piles shall be continuously monitored by the geotechnical special inspector.
<br /> handrails,excavation access,and barriers. It also includes lifting of materials and construction Cantilevered soldier piles will be utilized to temporarily shore the excavation.Aker pile CONSTRUCTION OF THIS SYSTEM CONTRACTORS,
<br /> THE
<br /> installation,sequential lagging and excavation will be completed until the bottom of excavation is Survey monitoring of the shoring wall,conducted by a licensed surveyor,shall be performed to C.,DRDRAWINGS SHALL BE BY DBM CONTRACTORS,
<br /> equipment into and out of the excavation,temporary bracing of single-sided formwork, INC., IR ITS DESIGNATED SUBCONTRACTORS OR
<br /> reached. determine the vertical and horizontal movement of the monitoring points. Monitoring shall be SUPPLIERS ONLY.
<br /> temporary shoring of excavations,and stability of all temporary cut slopes.
<br /> performed in accordance with the recommendations of the geatechnicalreport
<br /> A pre-construction meeting shall be held prior to the start of the work and shall be attended by
<br /> the owner's representatives,the engineer,the general contractor,the excavation subcontractor, SHORING ELEMENT LAYOUT: Per the geotechf survey reference
<br /> report,shoring monitoring must Include:"...we recommend establishing a
<br /> the shoring contractor,and the geotechnical special inspector. The pre-construction meeting Layout of sharing elements perpendicular to the building walls shall be based on the architectural series of survey reference paints to measure arty horizontal deflections of the shoring system. PROJECT
<br /> shall be conducted to clarify the requirements for the work,ro coordinate the construction plans taking into account pertinent building elements(e.g.,waterproofing)not shown on these Control points should be established at a distance well away from the walls and slopes,and ^^n c
<br /> activities,and to identify contractual relationships and he work,t c plans, deflections from the reference points should be measured throughout construction by survey C O V r A J S HEALTH
<br /> The general contractor is responsible for laying out the location of the soldier Iles and methods.At least one-third of the installed soldier piles should be monitored by taking readings
<br /> The shoring system is temporary in nature,is constructed external to the building envelope of the 8 fro Y 8 p at the top of the pile Additionally,benchmarks installed on the surrounding buildings should be B R 0 A D W A Y BLOCK
<br /> permanent structure,and should not be construed as contributing any long-term utility to the coordinating these locations with existing utilities and other structures.DBM shall arrange"Call
<br /> "services priorto start of soldier pile installation. monitored for at least vertical movement We suggest taking readings at least once a week,until �H r�
<br /> permanent structure.This includes issues relating to drainage/water-proofingBefore You Dig
<br /> of the permanent it is established that no deflections are occurring." L
<br /> basement walls. If the structural engineer intends to incorporate any elements of the shoring
<br /> A baseline reading of monitoring points an the ground surface and settlement-sensit'rre
<br /> system into the permanent building design(including drainage/water-proofing components),he UTILRIES:
<br /> structures
<br /> should independently evalu ate their utility for i nclusion as part of the perma nent design. In preparation of this design,DBM has uUla e
<br /> ed underground utility information in the project behind the shoring wall alignment must be established prior to dewatering, SHEET TITLE
<br /> drawings.Information shown regarding location of existing underground utilities is approximate. excavation,and installation of the shoring system.
<br /> REFERENCE DATA: Prior to construction,it is anticipated that the Contractor and/or Property Owner will positively Survey frequency can be decreased after the shoring system has been installed and excavation is GENERAL
<br /> locate all existing underground utilities,including service laterals,as required by RCW 19.122.030. complete if the data indicates little or no additional movement Surveying must continue until the
<br /> All existing site data,existing and proposed topographical data,and existing and proposed utility permanent structure is complete lincluding floor slabs as braces)up to final and street grades.
<br /> data;and proposed shoring wall locations are based on: All sewer and storm lines in the ROW within ring(or within shall
<br /> b such lines are f pr-fte-project
<br /> or more The survey frequency will be determined by the geotechnical engineer. NOTES
<br /> off site property Tine)of any proposed shoring element shall be videotaped of pre-project
<br /> Broadway Block Phase II B III,ASI-02 Set byAnkrom Moisan dated 05/O1/2023 condition prior to preconstruction meetings.
<br /> Sharing Plan and Elevations Reference Drawings by BNBuilders dated 08/19/2023
<br /> "Geotechnical Engineering Study"by Geotech Consultants,Inc for 3322 Broadway Ave, EROSION CONTROL: REV DATE
<br /> dated June 26,2019
<br /> All erosion control measures and stability of slopes will be the responsibility of the general 0 09 0$ 202
<br /> contractor.
<br /> DRILLED SOLDIER PILES:
<br /> BUILDING CODES,DESIGN MANUALS,AND SPECIFICATIONS: The minimum required structural steel shapes for the soldier piles are indicated on these plans.
<br /> 2018 International Building Code Alternative steel sections may be used provided that the section modulus and moment of inertia
<br /> are equal to or greater than that of the corresponding steel section shown on the plans. SCALE
<br /> DESIGN LIVE LOAD: Shafts shall be constructed so that the center at the top of the shaft is within+/-3 inches of the
<br /> Traffic/construction surface surcharge equivalent to 100 psf horizontal pressure. plan location.Shafts shall be plumb,the elevation at the top of shaft shall be+/-3 inches from
<br /> the plan location. During construction for shafts,the contractor shall make frequent checks an
<br /> the plumbness,alignment,and dimensions of the shafts.Any deviation exceeding the allowable
<br /> tolerances shall be corrected immediately.
<br /> DESIGN CALCULATIONS:
<br /> The soldier pile shoring wall design calculations are contained in the report titled:"Temporary The steel soldier piles shall be placed so that the center of the pile is within+/-3 inch of the plan
<br /> Shoring Calculations'dated 9/8/2023. location at the top of the pile,and within 1%of vertical with depth.
<br /> Shafts shall be excavated to the required depth as shown on the plans.The excavation shall be DRAWN BY CHECKED
<br /> completed in a continuous operation using equipment capable of excavating through the type of
<br /> SUBSURFACE DESIGN: material expected to be encountered.
<br /> TRK PG
<br /> All subsurface design parameters used in the shoring design are based on the recommendations If the shaft excavation is stopped,the shaft shall be secured by installation of a safety cover.It
<br /> and subsurface characterization presented in the geotechnical report prepared by Geotech shall be the sharing contractor's responsibility to ensure the safety of the shaft and surrounding
<br /> Consultants dated June 26,2019. soil and the stability of the side walls.A temporary casing should be used if necessary to ensure
<br /> such safety and stability.
<br /> SEISMIC DESIGN PARAMETERS: Where caving conditions are encountered,the shoring contractor shall select a method to
<br /> Not applicable. prevent ground movement.The shoring contractor may elect to place a temporary casing. STAMP
<br /> The shoring contractor shall use appropriate means(such as cleanout bucket),to clean the --
<br /> CONCRETE: bottom of the excavation such that no more than 2-inches of loose or disturbed material is
<br /> t Oltp
<br /> All controlled-density-fill(CDF)shall have a minimum of 1.5 sacks(141 Its.)of cement per cubic present.
<br /> Temporary casings for the shafts shall be removed.A minimum 5-foot head of concrete must be
<br /> yard of concrete. o_
<br /> Type I,it,or III Portland cement conforming to ASTM C1S0/AASHTO MBS shall be used for maintained balance the soil and water pressure at the bottom of the casing during removal. �Y
<br /> The casing shall be smooth.
<br /> concrete. +�
<br /> Admixtures shall conform to the requirements of ASTM C494/AASHTO M194,shall be used in Shaft backfill shall be placed as shown on the plans. Shaft backfill shall be placed in one
<br /> accordance with the manufacturer's recommendations,and shall be approved by the engineer. continuous operation to the top of the shaft w
<br /> Aggregates shall conform to the requirements of ASTM C33/AASHTOM6 for fine aggregates and If water is not present,the backfill can be end dumped into the shaft If water is present,the
<br /> 09.0J3.
<br /> AASHTO MBO,class B for coarse aggregates. backfill shall be deposited bytremie placement methods. NUMBER
<br /> SHEET
<br /> 1 .0
<br />
|