CONSTRUCTION DOCUMENTS

Transcription

1 Lesson 4 CONSTRUCTION DOCUMENTS 4-1 Version1-1/15 4-1

2 Learning Outcomes Locate Plan Sheet Details Related to Drilled Shafts Calculate REC % and RQD Identify key elements of the Drilled Shaft Installation Plan Identify & interpret applicable 455 Specifications 4-2 Version1-1/15 4-2

3 Project Document Governing Order Special Provisions Technical Special Provisions Plans (including revisions) Design Standards Developmental Specifications Supplemental Specifications Standard Specifications 4-3 Must know this governing order. The Coordination of Contract Documents is set forth in section 5-2 of the Standard Specifications for Road and Bridge Construction. Governing order Special Provisions Specific clauses adding to or revising the Standard Specification, setting forth conditions varying from or additional to the Standard Specifications, for a specific project. Technical Special Provisions Specifications prepared, signed and sealed by an Engineer registered in the State of Florida other than the State Specifications Engineer, or his designee, which are made part of the Contract as an attachment to the Specifications Package. Plans The approved plans, including reproductions thereof, showing the location, character, dimensions and details of the work to be done. Design Standards Are FDOT standard design sheets for common items and are typically included in Plan sets. An example of this type of sheet is the Notes and Details for Square Prestressed Concrete Piles, Index No Developmental Standards A specification developed around a new process, procedure, or material and designated as a developmental specification. Supplemental Specifications Approved additions and revisions to the Standard Specifications. Standard Specifications The directions, provisions and requirements contained herein, together with all stipulations contained in the plans or in the contract documents, setting out or relating to the method and manner of performing the work, or to the quantities and qualities of materials and labor to be furnished under the contract. Version1-1/15 4-3

4 Definition of the Engineer Engineer: Director, Office of Construction, acting directly or through his duly designated representatives 4-4 Version1-1/15 4-4

5 Plans & Specification Checklist PLANS AND DOCUMENTS CHECKLIST 4-5 Version1-1/15 4-5

6 Inspector References Approved Drilled Shaft Installation Plan Complete set of Project Plans with Pay Items Minutes of Previous Meetings Special Provisions Technical Special provisions for project Standard Specifications Supplemental Specifications Design Standards Project Geotechnical Report 4-6 Version1-1/15 4-6

7 Important Plans and Drawings Key Sheet Summary of Pay Items Plan and profile Special Provisions Structural Plans: General Notes Report of Core Borings Foundation Layout Plans Bridge Hydraulic Sheet Drilled Shaft Details Bent/Pier Plans Design Standards (17743 and 17502) 4-7 Version1-1/15 4-7

8 Plans Review 4-8 Version1-1/15 4-8

9 Plan Set- Sheet 1 (Key Sheet) 4-9 Version1-1/15 4-9

10 Plan Set- Sheet 1 (Key Sheet) 4-10 Version1-1/

11 Plan Set- Sheet 1 (Key Sheet) 4-11 Version1-1/

12 Plan Set- Sheet 1 (Key Sheet) 4-12 Version1-1/

13 Plan Set- Sheet 1 (Key Sheet) 4-13 Version1-1/

14 Plan Set- Sheet 1 (Key Sheet) 4-14 Version1-1/

15 Plan Set- Sheet 2 (Summary of Pay Items) 4-15 Version1-1/

16 Plan Set- Sheet 2 (Summary of Pay Items) 4-16 Version1-1/

17 Plan Set- Sheet 3 (Plan & Elevation) 4-17 Version1-1/

18 Plan Set- Sheet 3 (Plan & Elevation) 4-18 Version1-1/

19 Plan Set- Sheet 4 (Report of Core Borings) 4-19 Version1-1/

20 Plan Set- Sheet 4 (Report of Core Borings) 4-20 This notes section explains other symbols that may be used in this plan and special information that may be relevant to the drilled shaft construction. For example, the contractor is advised that artesian water was observed or expected at certain elevation and how high the water reached. WOH: means weight of hammer in the Standard Penetration Test. This is means a very loose or a very soft material or maybe even a void was encountered. We will cover later on what is a Standard Penetration test, or SPT. 50=2 : This means that during the SPT test the hammer reached 50 blows and only advanced 2. This in the industry of soil boring is considered refusal. In general, every time an SPT sampler requires 50 blows or more and advancing less than 6 is considered refusal. Note also the symbols for casing used. This refers to the casing used during the execution of the soil boring. If the soil testing firm needed to use casing during the soil borings, this will typically indicate the presence of permeable soils and formations. Water and drilling fluids are required to maintained cool the drilling tools. If these get lost through the soil or rock formations the drilling will need to use casing to hold the drilling fluid or water. Version1-1/

21 Plan Set- Sheet 4 (Report of Core Borings) 4-21 Version1-1/

22 Plan Set- Sheet 4 (Report of Core Borings) 4-22 Version1-1/

23 Plan Set- Sheet 4 (Report of Core Borings) 4-23 Version1-1/

24 Plan Set- Sheet 4 (Report of Core Borings) 4-24 Version1-1/

25 Plan Set- Sheet 4 (Report of Core Borings) 4-25 Version1-1/

26 Plan Set- Sheet 4 (Report of Core Borings) 4-26 Version1-1/

27 Plan Set- Sheet 5 (Foundation Layout) 4-27 Version1-1/

28 Plan Set- Sheet 5 (Foundation Layout) 4-28 Version1-1/

29 Plan Set- Sheet 5 (Foundation Layout) 4-29 Version1-1/

30 Plan Set- Sheet 5 (Foundation Layout) 4-30 Version1-1/

31 Plan Set- Sheet 5 (Foundation Layout) 4-31 Version1-1/

32 Plan Set- Sheet 5 (Foundation Layout) 4-32 Version1-1/

33 Plan Set- Sheet 6 (Foundation Layout) 4-33 Version1-1/

34 Plan Set- Sheet 6 (Foundation Layout) 4-34 Version1-1/

35 Plan Set- Sheet 7 (Foundation Layout) 4-35 Version1-1/

36 Plan Set- Sheet 7 (Foundation Layout) 4-36 In bridge projects the geotechnical engineer will produce a drilled shaft length letter detailing the required production tip elevations which are based on load tests and soil borings called pilot holes. These production tip elevations may be different from whatever elevations were anticipated tip elevations were presented in the plans. If there are no load testing nor any pilot holes or any other field testing to verify these tip elevations, the tip elevations indicated in the plans will be the ones to construct the shafts to. Note 6 mentions the rock socket. Rock socket is the portion of the shaft that will be in contact with rock. The drilled shaft length letter may contain a revision of the required rock socket lengths. If there are no field testing at all, the rock sockets indicated in the plans will be ones the must be met. Note 7 indicates what type of material should be considered good enough to be considered part of the rock socket. Drilled shafts must meet both: the required tip elevations (indicated in the plans or revised by the drilled shaft length letter) and the rock socket lengths (indicated in the plans or revised by the drilled shaft length letter). Version1-1/

37 Plan Set- Sheet 7 (Foundation Layout) 4-37 Version1-1/

38 Plan Set- Sheet 7 (Foundation Layout) 4-38 Version1-1/

39 Plan Set- Sheet 7 (Foundation Layout) 4-39 Version1-1/

40 Plan Set- Sheet 7 (Foundation Layout) 4-40 Version1-1/

41 Plan Set- Sheet 7 (Foundation Layout) 4-41 Version1-1/

42 Plan Set- Sheet 7 (Foundation Layout) 4-42 Version1-1/

43 Scour Abutment Scour Clear-water contraction scour Scour Abutment Scour Long-term degradation Live-bed contraction scour Short-term scour Drilled Shafts 4-43 Version1-1/

44 Scour 4-44 Version1-1/

45 Scour 4-45 Version1-1/

46 Scour 4-46 Version1-1/

47 Plan Set- Sheet 8 (Hydraulic Sheet) 4-47 Version1-1/

48 Plan Set- Sheet 8 (Hydraulic Sheet) 4-48 Version1-1/

49 Plan Set- Sheet 9 (Drilled Shaft Details) 4-49 Version1-1/

50 Plan Set- Sheet 9 (Drilled Shaft Details) 4-50 Version1-1/

51 Plan Set- Sheet 9 (Drilled Shaft Details) 4-51 Version1-1/

52 Plan Set- Sheet 9 (Drilled Shaft Details) 4-52 Version1-1/

53 Plan Set- Sheet 10 (Bent/Pier Plan) 4-53 Version1-1/

54 Plan Set- Sheet 10 (Bent/Pier Plan) 4-54 Version1-1/

55 Plan Set- Sheet 10 (Bent/Pier Plan) 4-55 Version1-1/

56 Rock Socket Rock socket: Portion of shaft In contact with Rock Version1-1/

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60 Version1-1/

61 Pilot Hole Pilot Hole: When pilot holes are shown in the plans core a pilot hole, prior to shaft excavation, in accordance with ASTM D 2113 Standard Practice for Diamond Core Drilling for Site Excavation and the Department s Soils & Foundations Handbook using a double or triple wall core barrel through part or all of the shaft, to a depth of 3 times the diameter of the drilled shaft below the tip elevation shown in the plans, as directed by the Engineer. The Engineer may require the Contractor to cut any core to a total depth below the bottom of the drilled shaft excavation of up to 5 times the diameter of the drilled shaft Version1-1/

62 CPAM Drilled Shafts are not part of CQC Department responsible for maintaining log of Pilot Hole, Coring and Shaft Excavation 4-62 Version1-1/

63 Cores Cores: Take cores when shown in the plans or directed by the Engineer to determine the character of the material directly below the shaft excavation. Provide equipment to retrieve the core from a depth of 5 times the diameter of the drilled shaft below the bottom of the drilled shaft excavation in accordance with ASTM D 2113 Standard Practice for Diamond Core Drilling for Site Excavation. Cut the cores with an approved core barrel to a minimum depth of 3 times the diameter of the drilled shaft below the bottom of the drilled shaft excavation after completing the shaft excavation, as directed by the Engineer Version1-1/

64 Cores Cores:Continued The Engineer may require the Contractor to cut any core to a total depth below the bottom of the drilled shaft excavation of up to 5 times the diameter of the drilled shaft. For cores or pilot holes, use only a double or triple wall core barrel designed: (a) to cut a core sample from 4 to 6 inches in diameter, at least 5 feet in length, and, (b) so that the sample of material cored can be removed from the shaft excavation and the core barrel in an undisturbed state, and 4-64 Version1-1/

65 Cores Cores: Continued The Engineer will inspect the cores and determine the depth of required excavation. When considered necessary by the Engineer, take additional cores. Place the core samples in suitable containers, identified by shaft location, elevation from and to, and job number, and deliver to the Department within 48 hours after cutting. When called for in the plans, substitute Standard Penetration Tests (SPT) for coring. In such cases, supply these tests at no additional cost per foot to the Department above that bid for core (shaft excavation) Version1-1/

66 Cores Cores:Continued Provide areas for the disposal of unsuitable materials and excess materials as defined in that are removed from shaft excavations, and dispose of them in a manner meeting all requirements pertaining to pollution Version1-1/

67 Standard Penetration Test Borings Anvil 140 lb. Hammer free-falling30 Drill Rod Split-Barrel Drive sampler Seating Spoon6 Second Increment 6 Third Increment 6 SPT Resistance (N-value) is total number of blows to drive sampler the 2 nd and 3 rd 6 inch increments 4-67 Version1-1/

68 Standard Penetration Test Borings Disassemble spoon, avoiding disturbance to sample Note length of sample recovered Describe the sample and any change in material (stratum break) Carefully place representative portion(s) in waterproof container Properly label, store & transport 4-68 After the sampler has been removed from the borehole and detached from the drill rods, the sampling spoon can be disassembled and the soil in the sampling spoon can be examined. If there is soil within the sampler, the soil boring inspector will record the length of the sample recovered or the percent recovery, describe the soil and record the SPT results. Then the inspector will note the location of each stratum with respect to the bottom of the sampler barrel. The inspector will then place a representative portion of each stratum into a waterproof container (jar) and properly label, store and transport the samples to the laboratory facility. In the report of core borings, the N values will be presented at the left side of each boring. Version1-1/

69 Rock Cores Core runs are generally 5 feet in length Most common size is 4 in. In accordance with ASTM D Core drilling is used to obtain intact samples of rock for testing purposes and for assessing rock quality and structure. Rock coring may be required during the execution of pilot holes, prior to construct production drilled shafts or after the excavation of the shaft to verify the conditions of the rock underneath the shaft bottom. The rock coring is performed usually in segments, called runs, that are typically 5 ft in length. Even though for soil exploration purposes smaller sizes are typically used, in our specifications we require core diameters of 4 to 6. Version1-1/

70 Conventional Rock Coring 4-70 Version1-1/

71 Core Barrels Double-tube Core Barrel 4-71 Here is a picture of a double tube core barrel. Core barrels may be single-tube, double-tube, or triple-tube. Single barrels are not acceptable in our specifications. Version1-1/

72 Rock Coring Video 4-72 Version1-1/

73 Core Barrel Components Double tube Core Barrel Diamond bit w/ carbide reaming shell Inner barrel shoe assembly 4-73 Version1-1/

74 Core Drilling Observations Fluids Pressures and Rates Procedural items Version1-1/

75 Fluids Amount of water injected versus amount returned Losses of fluids Color change 4-75 Version1-1/

76 Pressures & Rates Hydraulic down pressure Water pressure Drilling Action (smooth, rough, etc.) Changes in drilling rates, revolutions Rod drops (depth from and to) Loss of circulation Drilling Rate (time in Minutes per 1 ft.) 4-76 Version1-1/

77 Procedural Items Size and type of core barrel and bit Casing size, type, depth Core run data 4-77 Version1-1/

78 Drilled Shaft Rock Core Log Form # Version1-1/

79 Drilled Shaft Rock Core Log Form # (Cont d) Version1-1/

80 Pilot Hole Log Pilot Hole Log Form # Version1-1/

81 Core Handling & Preservation Extruded into a tray Core Or Tray Into core box Left (Top of Run) Right (Bottom of Run) 4-81 Version1-1/

82 Recovered Rock Cores 4-82 Version1-1/

83 Recovery % REC % is defined as the length of core recovered divided by the length of core run and is expressed and reported as a percentage Version1-1/

84 % REC = Recovery % Length of Core Recovered Length of Core Run EXAMPLE PROBLEM (100) Length of Run = 5.0 Recovered 39 REC = (100) 5.0 = Can REC be greater than 100%? 4-84 Version1-1/

85 Rock Quality Designation (RQD) RQD is defined as the sum of all recovered pieces of rock core greater than 4 in length divided by the length of core run and is expressed and reported as a percentage. Ref: ASTM Version1-1/

86 Rock Quality Designation (RQD) (RQD)* *DESCRIPTION OF ROCK QUALITY 0 25 Very Poor Poor Fair Good Excellent * from Federal Highway Administration 4-86 Version1-1/

87 Measuring of Core Pieces Centerline of core Core Dia Version1-1/

88 Rock Quality Designation (RQD) % RQD = Sum of Pieces >4 Length of Core Run (100) PROBLEM Length of Run = 5.0 = Recovered pieces RQD = 60 (100) = Can RQD be greater than REC? Can RQD be greater than 100%? % 4-88 Version1-1/

89 Material Identification I don t know but I m not going to touch it! What is that? 4-89 Version1-1/

90 Material Identification SANDS CLAYS The Inspector needs to record the materials coming out of the hole. ROCK 4-90 Version1-1/

91 Material Identification ROCK 4-91 Version1-1/

92 Material Identification In its natural state may look like this. Coming out of the hole may look like this Version1-1/

93 Material Identification What is Soil? Naturally occurring mineral particles that are readily separated into small pieces. What is Rock? Naturally occurring material composed of mineral particles so firmly bonded together that significant effort is required to separate the particles Version1-1/

94 Soil Type Granular Soils: Fine-grained Soils: Organic Soils: Sands and Gravel Silts and Clays Peat, Organic Soils 4-94 Version1-1/

95 Rock In Florida Drilled Shaft projects: Limestone, Sandstone 4-95 The rock type most encountered in our drilled shaft projects will be limestone, though some sandstones are possible. These type of rocks belong to the sedimentary rocks group. Sedimentary rocks are formed by the cementation of sedimented soils or precipitated materials. Limestone for example is mostly formed by precipitation of calcite, aragonite and typically includes accumulation of shells, corals and fossilized organisms. Our limestone is frequently vuggy and very porous. Parts of the state are known for their sinkhole activity. Even where sinkhole activity is relatively unlikely, the limestone can still be very porous. The relative hardness of the limestone varies widely and can occur over short distances. Version1-1/

96 Field Identification of Materials FIELD IDENTIFICATION OF SOILS/ROCK SOILS Squeezed in Hand & Pressure Released Rolled Between Soil Type Visual Appearance Thumb & Finger When Air Dry When Moist when Moist SAND Individual grain sizes can be detected. It is free-flowing when in a dry condition. Will not form a cast & will fall apart when pressure is released Forms a cast which will crumble when lightly touched Can not be ribboned SILT Contains +80% silt particles with very little fine sand & clay. When dry, it may be cloddy, readily pulverizes to a powder with a soft flour-like feel. Washes off easily. Forms a cast which can be handled without breaking, but can easily be broken into powdery form by hand Forms a cast which can freely be handled. When wet, it readily puddles. Has a tendency to ribbon with a broken appearance; crumbles easily, feels smooth CLAY Fine texture- breaks into hard lumps when Forms a cast which can Forms a cast which can Forms long, thin flexible be handled without be handled without ribbons. Can be worked dry. Difficult to pulverize into a soft flourlike powder when dry. ID based on mass. breaking breaking into a dense, compact cohesive properties of moist soil. ROCK (Terms to describe rock hardness) REMEMBER: Rock formations are tough to classify. If it s hard (+50 blow count on Boring Log Report) and you are not sure what it is-- call it Rock. Collect cuttings whenever recovery is not possible. Description Friable Low Hardness Field Observations (Characteristics) Easily crumbled by hand, pulverized or reduced to powder and is too soft to be cut with a pocket knife. Can be gouged deeply or carved with a pocket knife. Moderately Hard Can be readily scratched by a knife blade; scratch leaves a heavy trace of dust and scratch is readily visible after the powder has been blown away. Hard Can be readily scratched with difficulty; scratch produces little powder and is often faintly visible; traces of the knife steel may be visible Very Hard Cannot be scratched with a pocket knife. Leaves knife steel marks on surface. Example Descriptions of the Soil Components Type Description Sand Describes a sample that consists of both fine and coarse sand particles. Gravel Describes a sample that consists of both fine and coarse gravel particles. Silty Fine Sand Major component fine sand, with non-plastic fines Sandy Gravel Major component gravel size, with fine and coarse sand. May contain small amount of fines Gravelly Sand Major component sand, with gravel. May contain small amount of fines. Gravelly Sand, Silty Major component sand, with gravel and non-plastic fines. Gravelly Sand, Clayey Major component sand, with gravel and plastic fines. Sandy Gravel, Silty Major component gravel size, with sand and non-plastic fines. Sandy Gravel, Clayey Major component gravel size, with sand and plastic fines Silty Gravel Major component gravel size, with non-plastic fines. May contain sand. Clayey Gravel Major component gravel size, with plastic fines. May contain sand and silt. Clayey Silt Major component silt size, with sufficient clay to impart plasticity and considerable strength when dry. Silty Clay Major component clay, with silt size. Higher degree of plasticity and higher dry strength than clayey silt. REMEMBER- Don t come home until you answered all your questions To late after the shaft is installed Version1-1/

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98 Drilled Shaft Installation Plan REQUIRED ON ALL FDOT PROJECTS WITH DRILLED SHAFT FOUNDATIONS 4-98 The Drilled Shaft Installation Plan is a shop drawing describing in detail the Contractor's tools and methods of constructing the drilled shafts. Section , Drilled Shaft Installation Plan describes the minimum requirements of the Drilled Shaft Installation Plan. The intent behind having the Contractor submit this item is to cause him to put thought and planning into the project. Normally, contractors want to take a "wait and see" attitude. For most Contractors, that is the extent of their pre-job planning; desiring to rely on flexibility to adjust once on site and the job begins to develop. There are so many unknowns when dealing with subsurface conditions, that the Contractor could benefit himself to pay closer attention to details regarding methods of installation and equipment ahead of time, thereby minimizing some of the unknown factors. A smooth and successful start will usually be carried all the way through the job. As a Drilled Shaft Inspector you must receive a copy of the Contractor's approved Drilled Shaft Installation Plan. You should be familiar with the installation plan well in advance of the start of shaft construction. Version1-1/

99 Drilled Shaft Installation Plan Contractor prepares Drilled Shaft Installation Plan Submits to Engineer, for Review at Preconstruction Conference Changes to Contractor within 20 days of receipt Contractor resubmits to Engineer Eng. Review Approval Engineer Approves Plan Changes Review 7 Days Approval Changes Test Shaft Construction of Shafts No changes may be made without the Engineers approval 4-99 Version1-1/

100 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: At the preconstruction conference submit a drilled shaft installation plan for review by the Engineer. Final approval will be subject to satisfactory performance. Include in this plan the following details: Version1-1/

101 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 1. Name and experience record of drilled shaft superintendent or foreman in responsible charge of drilled shaft operations. Ensure the drilled shaft superintendent or foreman in responsible charge of the drilled shaft operations has a minimum of one year of experience of installing drilled shafts of the size and depth shown in the plans and a minimum of three years experience in the construction of drilled shafts using the following methods: a. Mineral slurry, b. Casings up to the length shown in the plans, c. Shaft drilling operations on water under conditions as shown in the plans Version1-1/

102 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 2. List and size of proposed equipment, including cranes, drills, augers, bailing buckets, final cleaning equipment, desanding equipment, slurry pumps, core sampling equipment, tremies or concrete pumps, casings, etc. 3. Details of sequence of construction operations and sequence of shaft construction in bents or shaft groups. 4. Details of shaft excavation methods Version1-1/

103 List of Equipment Note: Rig Augers Core Barrels Buckets Version1-1/

104 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 5. Details of slurry, including proposed methods to mix, circulate, desand, test methods, and proposed testing laboratory to document test results. 6. Details of proposed methods to clean shaft after initial excavation. 7. Details of shaft reinforcement, including methods to ensure centering/required cover, cage integrity during placement, placement procedures, cage support, and tie downs Version1-1/

105 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 8. Details of concrete placement, including elapsed concrete placement times and proposed operational procedures for concrete tremie or pump, including initial placement, raising during placement, and overfilling of the shaft concrete. Provide provisions to ensure proper final shaft cutoff elevation. 9. Details of casing removal when removal is required, including minimum concrete head in casing during removal Version1-1/

106 Details of Concrete Placement Note: Methods Tremie Version1-1/

107 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 10. Required submittals, including shop drawing and concrete design mixes. 11. Details of any required load tests, including equipment and procedures, and recent calibrations for any jacks or load cells. 12. Proposed CSL Specialty Engineer to perform, log analyze, and report the test results Version1-1/

108 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 13. Methods and equipment proposed to prevent displacement of casing and/or shafts during placement and compaction of fill. 14. Provide the make and model of the shaft inspection device, if applicable. 15. Details of environmental control procedures used to prevent loss of slurry or concrete into waterways or other protected areas. 16. Proposed schedule for test shaft installation, load tests and production shaft installation. 17. Other information shown in the plans or requested by the Engineer Version1-1/

109 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued 18. For drilled shafts for miscellaneous structures constructed using polymer slurry, identify the polymer slurry meeting the requirements of Section , the ph and viscosity ranges recommended by the manufacturer for the materials to be excavated and a description of the mixing method to be used. Submit the Material Safety Data Sheets (MSDS) for the product, and certifications that the polymer slurry and components meet the requirements of Section Submit the contact information for the manufacturer s representative available for immediate contact during shaft construction and the representative s schedule of availability For drilled shafts for miscellaneous structures constructed using polymer slurry, identify the polymer slurry meeting the requirements of Section , the ph and viscosity ranges recommended by the manufacturer for the materials to be excavated and a description of the mixing method to be used. Submit the Material Safety Data Sheets (MSDS) for the product, and certifications that the polymer slurry and components meet the requirements of Section Submit the contact information for the manufacturer s representative available for immediate contact during shaft construction and the representative s schedule of availability. Version1-1/

110 Drilled Shaft Install. Plan Drilled Shaft Installation Plan: Continued The Engineer will evaluate the drilled shaft installation plan for conformance with the Contract Documents. Within 20 days after receipt of the plan, the Engineer will notify the Contractor of any additional information required and/or changes that may be necessary in the opinion of the Engineer to satisfy the Contract Documents. The Engineer will reject any part of the plan that is unacceptable. Submit changes agreed upon for reevaluation. The Engineer will notify the Contractor within seven days after receipt of proposed changes of their acceptance or rejection. All equipment and procedures are subject to trial and satisfactory performance in the field Version1-1/

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113 Learning Outcomes Locate Plan Sheet Details Related to Drilled Shafts Calculate REC % and RQD Identify key elements of the Drilled Shaft Installation Plan Identify & interpret applicable 455 Specifications Version1-1/

114 Questions? Version1-1/

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