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<br /> v��i PROJECT NAME
<br /> W RIGID INCLUSIONS and capacities of equipment and components; instrumentation used to measure and procedures to determine grout quantity a. Hol{ow shaft diameter - minimum 1-1/4-inch (32-mm) clear id.
<br /> � pumped and pumping rate; and hoses and pumps. 3. Grout ump - positive dis lacement um with a known volume er stroke. Minimum dis lacement ressure at ump of 350 Ibf s EVERETT WATERFRONT
<br /> p � p p p p p p ` a� HOTEL INDIGO
<br /> � 2. Proposed grout volume and calculations to demonstrate that the required volume of grout will be achieved in the site soils within the In (240 mpa).
<br /> Q PART 1- GENERAL
<br /> N treatment depths. 4. Automated monitoring equipment - capable of ineasuring auger depth, penetration rate, and grout volume pumped per unit depth
<br /> x PROJECT ADDRESS
<br /> o B. Mix design and mix procedures of cement grout used for rigid inclusions ineluding grout material sources, including grain size distribution increment and of printing results.
<br /> "' 1.1 DESCRIPTION and plasticity index or hydrometer tests results o#the aggregate to be used, cement type, water-cement-aggregate ratio by weight, and 1002 MILLWRIGHT LOOP S
<br /> estimated minimum 7-day and 28-day compressive strength. EVERETT, WA
<br /> PART 4- EXECUTION
<br /> A. The work shall consist of constructing unreinforced concrete rigid inclusions (rigid inclusions) as specified herein and as shown on the C. A written schedule for completing the work descr'rbed in this specification and shown on the plans. The schedule shall show the CLIEN7
<br /> plans and disposing of the drilled spoits associated with the rigid inclusions construction, as appropriate. The work shall include drilling contractor's planned number of machines, number of shifts, and working hours. AMWEALTH, LP
<br /> and constructing the rigid inclusions to the specified depth and diameter indicated on the plans. If the contractor proposes a different 4.1 PREPARATION 18230E.VALLEYHIGHWAY#195
<br /> column size and layout, the alternate size and layout should provide the same area replacement ratio specified on the plans. KENT,wAssoa2
<br /> 2.3.2 A QA/QC PROGRAM FOR RIGID INCLUSIONS FOR THE ENGINEER'S APPROVAL PR10R TO STARTtNG WORK INCLUDING, BUT NOT LIMITED T:425.251.1800, F:425.251.1900
<br /> B. The contractor and speciatty subcontractors (hereafter referred to collectively as the contractor unless indicated otherwise) are T0, THE FOLLOWING: A. Protect structures, utilities, and other adjacent construction to avoid damage caused by settlement, lateral movement, and other hazards
<br /> responsible for the construction means and methods and control of the process of the work. This includes the construction sequence, created by drilling operations.
<br /> the safety of the workers, temporary handrails, excavation access, barriers, lifting of materials and construction equipment into and out
<br /> of the excavation, temporary bracing of formwork, the stability of all temporary cut slopes and other methods, techniques, sequences or A. A detailed description of the qa/qc program to be undertaken each day during production to confirm location over the depths and limits B. The elevation of the top of the rigid inclusian shall not shal{ be 24 inches below the building foundations and slabs. The rigid inclusion
<br /> procedures required to perform the work. shown on the plans, horizontal and vertical alignment tolerances, and required volume and compressive strengths specified herein. contractor will need to coordinate with the earthwork contractor on the grading plans prepared for this project.
<br /> B. Details of the procedures to obtain grout samples. Catalog cuts or shop fabrication drawings of the grout sampling device and curing
<br /> 1.2 PRECONSTRUCTION MEETING boxes. 4.2 INSTALLATION
<br /> C. Measures to be implemented each day during rigid inclusion installation to continuously monitor, modify and control grout volume,
<br /> monitoring equipment capable of ineasuring auger depth, penetration rate, and grout volume pumped per unit depth increment and of A. Prevent surface water from entering excavated shafts. Conduct wat�r to site drainage facilities.
<br /> A. A preconstruction meeting shall be held prior to the start of the work and shall be attended by the owner's representatives, the ground printing results, horizontal and vertical alignments, and other related aspects of the rigid inclusion installation process.
<br /> improvement designer (herein refered to as engineer) and/or the geotechnical special inspector, the prime contractor, the excavation 1 � n � B. Rigid inclusions shall be placed by rotating a continuous flight hollow-stem auger into the ground to the depths indicated on the project
<br /> contractor, the ground improvement specialty subcpntractor and the city representative. The preconstruction meeting shall be conducted D. Genera p a a d description of the proposed monitoring operations, including methods to obtain and record monitoring data and copies plans. Advance auger at a continuous rate during insertion that prevents the removal of excess soil.
<br /> to clarify the construction requirements for the work, ta coordinate the construction activities, and to identify contractual relationships of proposed monitoring data forms or report format GEOENGINEERS
<br /> C. Excavate rigid inclusions to depths/elevations indicated on project plans.
<br /> and responsibilities. E. Example format of daily production reports conforming to the requirements stated herein.
<br /> D. Maintain positive (clockwise) rotation of auger during withdrawal. Promptly remove excavated spoils to prevent accumulation.
<br /> 1.3 EXISTING SITE CONDITIONS AND UTfLtTIES 2.3.3 WITHIN ONE BUSINESS DAY AFTER THE END OF A WORK SHIFT, SUBMIT DAILY PRODUCTION REPORTS FOR EACH WORK SHIFi'TO THE E. Grout placement 8410 154th Avenue NE
<br /> Redmond, WA 98052
<br /> ENGINEER. DAILY PRODUCTION REPORTS SHALL BE FILLED �UT, CHECKED FOR CORRECTNESS, AND SIGNED BY THE CONTRACTORS FIELD 1. Grout shall be pumped with sufficient pressure through the auger shaft as the auger is withdrawn to fill the augered hole preventing P: 425-861-6000
<br /> SUPERINTENDENT, AND THE GEOTECHNICAL SPECIAL INSPECTOR AT THE END OF EVERY WORK SHIFT. THE REPOR7S SHALL CONTAIN, BUT NQT hoie collapse and any infiltration of soil into the hole and to cause the lateral penetration of the graut into soft or porous zones of the F: 425-861-6050
<br /> A. The contractor shall visit the site prior to any construction activities for the purpose of observing and documenting the preconstruction BE LIMtTED TO, THE FOLLOWING INF4RMATION: adjacent soil. Grout shall be placed in continuous operation. www.geoengineers.com
<br /> condition of all structures, infrastructure, sidewalks, roadways, and all other facilities adjacent to the site. The contractor shall
<br /> 2. Lift auger 6 to 12 inches at start of grout pumping to facifitate tip plug removal, then return to previously established tip efevation.
<br /> immediately notify the owner's representative and the engineer if signs of movement such as new cracks, increased size of old cracks or
<br /> separation of joints in structures, foundations, streets or paved and unpaved surFaces are observed. The contractor shall provide the A. Day, month, year, time of the beginning and end of the work shift; names of each superintendent in-charge of the work for the rigid 3. A minimum grout line pressure of at least 100 psi should be maintained.
<br /> engineer written documentation of the observed conditions within 24 hours of initial observation. inclusion installation; and a summary of equipment used during the shift. 4. Develop an initial grout head of 10 feet before start of auger withdrawal and maintain during extraction.
<br /> B. Rigid inclusion layout and elevations are based on topographic and other project information presented in the project plans and B. The location and limits of each completed rigid inclusion installed during the work shift and all rigid inclusions completed to-date on a 5. Monitor pumped grout volumes using calibrated monitoring equipment.
<br /> specifications. The contractor shall verify all dimensions, conditions and elevations before proceeding. Any discrepancies shall be plan of suitable scale to clearly detail the iocations of the rigid inclusions.
<br /> 6. Volume of placed grout shall be at least 100 percent of theoretical volume measured at 60-inch segments. If less than required
<br /> brought to the attention of the engineer. C. Time of beginning and completion of each rigid inclusion installed during the work shift. volume is placed for any given 60-inch segment, lower auger minimum of 60 inches, or to bottom of rigid inciusion if less than 60
<br /> C. The contractor shall verify the location of any and al1 existing and proposed utilities. Any conflicts between utility locations and rigid D. Water-cement-aggregate ratios, cement type, brand and compound composition, a record of cement grout volumes and rates, other inches available, and restart withdrawal.
<br /> inclusion locations will be resolved as directed by the engineer. The contractor shall seek approval of the engineer to shift rigid inclusion pertinent cement grout mix data, total installed depth and tip elevation for the rigid inclusion and installation sequence for every rigid 7, tf rout um in is interru ted durin lacement lower au er a minimum of 60 inches or th ri id in I i n �
<br /> locations to avoid confiicts. The contractor shall be responsible for any repair/replacement to damaged utility lines during construction. g p p g p g p � g , e bottom of the g c us o if less
<br /> inclusion. than 60 inches available, and restart withdrawal.
<br /> D. The contractor is responsible for any removal of abandoned utilities, foundation elements, or ofiher underground obstructions that E. Other pertinent observations including, but not limited to cement rout esca es, ground settlement or heave, colla se s of the rout ri id
<br /> g p p � ) g g 8. A head of grout at least 5 feet above the point of injection shall be maintained at all times during the pumping process so that the
<br /> interfere with the rigid inclusions. inclusion, any unusual behavior of any equipment during the rigid inclusions process, and other noteworthy events. In the event of a grout has a displacing action removing any loose material and maintaining the shape of the hole.
<br /> contractor claim, the daily production reports shall be the primary documents to substantiate the reasons and basis for the claim.
<br /> 9. Adjacent rigid inclusions - do not install rigid inclusions within 8 feet of rigid inclusions grouted within the previous 12 hours.
<br /> 1.4 SPECIAL INSPECTION F. Date, time, plan location, sample designation and elevation, and other details of grout sampling.
<br /> 10. Removed excavated material and dispose off site.
<br /> G. Monitoring data forms or report.
<br /> A. In accordance with the local building code, special inspection shall be provided by the owner for all rigid inclusion installation and testing. H. Summary of any downtime or unproductive time, including start and end time, duration, and reason. 4.3 HORIZONTAL AND VERTICAL ALIGNMENT TOLERANCES
<br /> B. The owner's representative that is providing the geotechnical special inspection shall be a qualified field representative appointed by the
<br /> engineer with experience monitoring ground improvement construction. Accurate records documenting the rigid inclusion construction 2,4 QUALITY ASSURANCE
<br /> shall be maintained by the geotechnical special inspector. The contractor shall assist the geotechnical special inspector as necessary to A. The maximum horizontal deviation of the as-installed center of any rigid inclusion projected at the top of the rigid inclusion shall not
<br /> obtain the as-built rigid inclusion locations, elevations, and all other infarmation as required by the owner and engineer. Special exceed 3 in. From the layout center coordinate, unless approved by the engineer.
<br /> inspection and testing of the grout shall be provided by a qualified materials testing agency approved by the engineer. A. Testing o N0. ISSUED DATE
<br /> B. The verfiical alignment of rigid inclusions shall not deviate in any direction by more than 2/o from vertical.
<br /> REVISIONS
<br /> 1. The owner will employ the services of an independent testing(aboratory to provide the grout testing, as described below in this C. If location or out-of-plumb tolerances are exceeded, provide corrective construction. Submit corrective construction proposals to the
<br /> 1.5 QUALITY ASSURANCE specification. engineer for review before proceeding. CONSULTANTS
<br /> B. QAJQG Program CIVIL ENGINEER
<br /> A. The contractor shall submit a reference list indicating the success#ul completion of at least five augercast pile or rigid inclusion projects 1. The contractor shall impiement a qa/qc program to verify that the installed rigid inciusions conform to the requirements stated 4.4 OBSTRUCTIONS CPHConsultanf
<br /> completed during the last 3 years. A brief description of each project with the owner's name and current phone number shall be herein. The qa/qc program shall be implemented as part of the work, at no additional cost to the owner. 11431 Willows Road NE,suite�20
<br /> Redmond,WA 98052
<br /> T:425265.2390, F:425.285.2389
<br /> included. 2. The contractor shall obtain grout samples and provide them to the testing laboratory representative. The representative will form, LANDSCAPEARCHITECT
<br /> � reserve, cure, trans g p p p g A. Subsurface strata may contain rubble, concrete, metal, bricks, granite, stone and blocks, wood debris, abandoned utilities, foundation Ge erCoburn Hutchins GC
<br /> B. The contractor s superintendent shall have a minimum of 3 years experience supervising augercast pile or rigid inclusion installation p port and test the rout sam les, and re ort the test results. The contractor shall coo erate with testin y � Hl
<br /> elements and other materials that can obstruct rigid '+nclusion installation operations. 1607 DexterAve N,suite 3
<br /> using drilling methods and the drill operators and on-site supervisors shall have a minimum of 1 year experience installing augercast laboratory and coordinate samp{ing activities with the testing laboratory, The contractor shall supply incidental items, access, inside Seattle,WA9$109
<br /> iles or ri id inclusions. Prior to startin the work, the contractor shall submit a list identif in the superintendent, drill ri o erators, and storage space, and electrical pawer to the curing boxes. The testing laboratory will supply curing boxes, and molds for use in forming B. Naturally occurring materials, such as cobbles, boulders, dense wefl-bonded or other competent in-situ soils, will not be considered as T:206.285.4422, F:206.285.0644
<br /> p g g Y� b g p STRUCTURAL ENGfNEER
<br /> on-site supervisors assigned to the project. The list shall contain a summary of each individual's experience and shall be sufficiently the samples. obstructions. Boulders, and sand and gravel layers may be encountered within the subsurFace soils, but will not be considered as either BrienenStructural Engineers,ps
<br /> com lete for the en ineer to evaluate the individual's ual'rfications. Work shall not be started until written approval of the contractor's 3. The a c ro ram shall include documentation of all obstructions and the dis osition of how each obstruction was overcome. known or unknown obstructions. 1316 CentralAvenue S,suite 2ao
<br /> p g a �1 �a p g p Kent,WA 98032
<br /> qualifications is given. 4. Graut sam les -testin of samples of fresh rout obtained accordin to ASTM c172 c 172m shall be erformed accordin to the C. Where unknown obstructions are encountered during rigid inclusion installation, the contractor shall install additional rigid inclusions to T:206.397.4000
<br /> p g g g � p g MECHANICALI ELECTRtCAL ENGINEER
<br /> , avoid the obstruction, at the direction of the engineer. Each situation shall be resolved and paid on a case-by-case basis. If such
<br /> C. The owner s representative may suspend the work if the contractor substitutes non-approved personnel for approved personnel. following requirements: Tres West Engineers,inc.
<br /> conditions are encountered, the contractor shall notify the engineer in writing, and provide all pertinent information relating to the nature, 2702 South 42nd Street,su�te 30�
<br /> a. Flow rate -ASTM c939 and ASTM c109/c 109m using a flow cone with 0.75-inch (19-mm) opening. depth, plan location coordinates, expected extent of the obstruction, and proposed new location to overcome the obstruction. Ta 53472.300409
<br /> 1.6 SUBMITTALS b. Compressive strength -ASTM c109/c 109m with cube specimens restrained from expansion according to ASTM c942. D. If difficult drilling is encountered due to the presence of naturalty occurring cobbles, boulders, or dense well-bonded in-situ soiis, or other �NTERIOR DESIGN
<br /> Jensen Fey Architecture+Planning
<br /> c. Testing frequency - obtain six 2-inch (101-mm) cubes for each 50 cubic yard (38 cubic meter) or fraction thereof of grout pfaced, characteristics of the in-situ soils, the contractor may elect to remove the object or submit an alternate location to avoid the object, 7730 Leary Way NE
<br /> but not fess than one set for each day of construction. subject to the acceptance of the engineer and at no additiona! cost to the owner. Such naturally occurring conditions sha11 not be the Redmond,wasao52
<br /> 1.6.1 GENERAL basis for additionaF measurement or compensation. T:425.216.0318
<br /> d. Test two cubes at 7 days, two cubes at 28 days, and hold two cubes in reserve. DRAWING STATUS
<br /> A. Submittals shall be provided by the contractor for the engineer's review and approval. The contractor will not be allowed to begin e. Strength of each grout mixture is satisfactory if every average of any three consecutive compressive-strength tests equals or 100°!o DESIGN
<br /> construction until all submittal requirements are satisfied and found acceptable to the engineer. All submittals shall be provided at least exceeds specified compressive strength and no more than 15% of the compressive-strength test value falls below the specified 4.5 SITE MAINTENANCE DEVELOPMENT
<br /> 15 days prior to initiating work. compressive strength of 4000 psi (27,6 mpa).
<br /> Discrepancies must be reported to the Architect
<br /> 5. The testing laboratory shal{ report test results in writing to engineer, grout manufacturer and contractor within 48 hours of testing. A. At all times during rigid inclusion installation operations, the site shall be maintained cleared of all debris and water. The contractor shall before proceeding. Only figured dimensions are
<br /> List project identification name and number, date of placement, name of testing and inspection agency, location of grout batch in regularly dispose of all waste materials in accordance with the requirements of all agencies having jurisdiction. to be used. Contractors must check all
<br /> 1.6.2 CONSTRUCTION WORK PLAN AND DOCUMENTS work, design compressive strength at 28 days, grout mixture proportions and materials, compressive breaking strength and type of dimensions on site. This drawing is protected
<br /> B. The contractor shall be responsible for and incorporate all sedimentation and turbidity control measures required by applicable federal,
<br /> break for both 7- and 28-day tests in reports of compressive-strength tests. by copyright.
<br /> state, and local regulations.
<br /> A. A detailed construction sequence and planned start of work date. 6. The testing laboratory shall make additional tests of grout if test results indicate that compressive strengths or other requirements �, The contractor shall take all necessa ALL DIMENSIONS ARE SHOWN IN IMPERIAL.
<br /> have not been met, as directed by the engineer. ry precautions and implement measures to prevent any spoil material, or stockpiled materials from
<br /> B. Drilling methods and equipment. entering storm drain structures, drainage courses, and other utility lines, or from leaving the site via surface runoff. The contractor shall
<br /> C. Grout mix designs for each grout mixture. Submit alternative design mixtures when characteristics of materials, project conditions, 7. Additional testing and inspection will be performed, at contractor's expense, to determine compliance of replaced or additional work prevent the migration of spoil return, spoil material, or stockpiled materials into any surface water body, beyond the immediate limits of
<br /> weather, test results, or other circumstances warrant adjustments. with specified requirements. grout mixing operations.
<br /> 1. Indicate amounts of mixing water to be withheld for later addition at project site. 8. The contractor shall correct deficiencies in the work that test reports and inspections indicate do not comply with the contract
<br /> documents.
<br /> 2. Submit compressive strength test results from the supplier no older than 6 months verifying the minimum 7-day and 28-day 4.6 ACCEPTANCE TESTING
<br /> compressive strengths. 9. Grout volume a R c H � T E c T u R E
<br /> � a. Each day or for each change in grout pumping equipment, the contractor shall provide the grouting rate and calculation to verify
<br /> D. Rigid inclusion placement procedures A. Grout volume 600108thAve.NE,suite�os
<br /> � that the required grout volume is achieved using the rigid inclusion equipment and procedure. Bellevue,wAssoo�
<br /> � 1. The acceptance of the rigid inclusion instaflation wilf be based on the diameter and design d�pths specified in the project plans or T:425.559.7888, www.mza-us.com
<br /> o PART 2 -WORK PLAN
<br /> � determined by the engineer. STAMP NORTH ARROW
<br /> , PART 3 - PRODUCTS
<br /> � B. Grout compressive strength ��-`� t, r; ���;,--
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<br /> � 2.1 DESCRIPTION OF WORK 1. The rigid inclusion constructed shall achieve an average compressive strength of at least 4,000 psi with no more than 15% of the `���� ��;� �'r'� 1-�' {�'
<br /> � 3.1 MATERIALS 28-day unconfined compressive strength results shall fall below the targeted unconfined compressive strength of 4,000 psi. ` ~ �j.J'��= ��= ���
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<br /> w A. The work shatl consist of advancing hollow-stem, continuous-flight augers of design diameters to the depths specified on the project `� , r ��
<br /> �' rm t m of I d tion. The cont lete a ualit ass n alit A. Grout mixtures 4.7 COMPENSAT{ON �" ,��&;J'
<br /> � plans. A stabilizing a shall be used at bot o ea s to prevent rota ractor shall comp q y ura ce/qu y �-��;� �,,�;.,,, ,�°.��:�w'.:
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<br /> � control (qa/qc) program throughout the course of the work to demonstrate that the rigid inclusion installation is performed in accordance 1. Prepare design mixtures for each type and strength of grout, proportioned on the basis of laboratory trial mi�cture, field test data, or A. Measurement and basis of payment � "'`.`' � ��
<br /> a ��t�,�:x�1 i
<br /> �, to the requirements stated herein. both. 1. Rigid inclusions, including spoils disposal �
<br /> ¢ a. Use a qualified independent testing agency for preparing and reporting proposed mixture designs based on laboratory trial DRAWING TITLE
<br /> D 2.2 SITE CONDITIONS mixtures. a. Payment shall be by the lineal foot of installed rigid inclusions, installed in accordance with the contract documents, SPECIFICATIONS
<br /> � measured from tip elevation to the 24 inches below building slabs or foundations. Price shall include spoils management,
<br /> � 2. Proportion grout mixture as follows: quality control, and all other associated labor, materials, and equipment.
<br /> � A. The owner has completed subsurFace investigations for the project site. The information is available for review as described in the a. Design compressive strength - 4,000 psi at 28 days; ASTM c109/c 109m with cube specimens restrained from expansion
<br /> �� project geotechnical report. according to ASTM c 942.
<br /> � b. Maximum water-cementitious materials ratio: 0.38. DRAWN CHECKED
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<br /> � B. The contractor shall visit the site and independently verify any access- or work-related restrictions. c. Grout flow- 10 to 25 seconds; ASTM c939 and ASTM c109/c 109m using a flow cone with 0.75-inch (19-mm) opening. TJM ZAS
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<br /> � SCALE @ ARCH E DATE
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<br /> 0 2.3 SUBMITTALS 3.2 EQUIPMENT
<br /> As indicated 01 17
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<br /> GRAPHIC SCALE
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<br /> � A. The following submittals will be required. A. Drilfing and pumping equipment:
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<br /> � 1. Drill rig- capable of advancing hollow-stem auger, continuous-#light augers of design diameters to design depths; with stabilizing arm
<br /> o PROJECT N0.
<br /> at bottom of leads to prevent rotation, and middle guide for augers greater than 40 feet (12 m) in length.
<br /> � 2.3.1 WORK PLAN FOR ENGINEER'S APPROVAL PRIOR TO BEGINNING WORK 21102004-00
<br /> oa. Mark leads at maximum 60-inch (1500-mm) intervals to facilitate measurement of penetration.
<br /> � DRAWING N0. REVISION N0.
<br /> � 2. Hvllow-stem auger- continuous auger flighting without gaps or breaks, of diameter no more than 3 percent less than rigid inclusion
<br /> o A. A written work plan for accomplishing the work described in this section and shown on the plans. The written procedure shall include: diameter; with grout pumping hote at bottom of auger head below cutting teeth. Seal grout-pumping hole with temporary tip plug to
<br /> � 1. Equipment, procedures, and materials to be used for installation of rigid inclusions. Hollow-stem auger equipment with dimensions be fuily opened by grout pressure or reinforcing bar during grout installation. �
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