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This is a baseline checklist. Additional quality control items should be added from the Contractor's quality control plan.
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In order to capture QC items unique to the particular wall system, coordinate with the Wall Company's technical representative to add items from the Wall Company's construction manual, recommendations, etc. to this baseline checklist.
3
Because most of the items on the checklist occur repeatedly throughout construction of each wall, the checklist should be completed daily, once for each portion of each wall constructed that day.
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Include daily test results, measurements, and/or documentation that show the following have been met:
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Date:
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Project:
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Project Number:
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Wall quality coordinator:
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Wall on-site supervisor:
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Wall Company's Technical Rep.:
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Resident Engineer:
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Wall Number:
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From STA:
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To STA:
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Lift/Row:
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DateQuality Control Plan
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Date of authorized Quality control plan
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N/A
NoYesRequired Experience
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The wall on-site supervisor has the required experience
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The wall quality coordinator has the required experience
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The Wall Company's technical representative has the required experience
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N/A
NoYesTraining
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The wall construction training was conducted by the wall quality coordinator and the Wall Company's technical representative
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All personnel participating in wall construction attended the wall construction training
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New personnel who did not attend the initial training have been trained by the wall quality coordinator
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N/A
NoYesWall Company's Technical Representative
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The Wall Company's technical representative was on-site during the first 5 days of wall construction of each wall
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The wall quality coordinator coordinated with the Wall Company's technical representative and the Engineer during all phases of wall construction
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The Wall Company's technical representative was contacted, and provided technical assistance, as needed
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The Wall Company's technical representative has been kept up-to-date (through communications, pictures, data, information, site visits, etc.) on construction progress and issues.
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The portion of the wall constructed today was according to the specifications, Wall Company authorized drawings, and the Wall Company's construction manual
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Concerns of the Wall Company's technical representative have been addressed
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Guidance for quality construction from the Wall Company's technical representative has been implemented
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N/A
NoYesWall Company Authorized Drawings and Other Requirements
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Wall facing elements meet specifications, tolerances, and Wall Company authorized drawings
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Wall drainage elements meet requirements
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Soil reinforcement and properties meet Wall Company authorized drawings
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Facing elements delivered to site meet project requirements
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Facing elements delivered to site free of chips, cracks, etc.
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Wall connections meet Wall Company authorized drawings
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Other materials test results meet specifications and Wall Company authorized drawings
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Materials certifications meet specifications and Wall Company authorized drawings
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N/A
NoYesMSE Backfill
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MSE backfill source material is consistent [no apparent changes (e.g. water content, gradation, organics, fines content, etc.) observed in the material]
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MSE backfill is free of organics and other deleterious material
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N/A
NoYesRunoff
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Wall fill graded to drain runoff away from wall face at end of each day
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N/A
NoYesFoundation (Subgrade) Preparation
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Foundation (subgrade) consistently firm (and proof-rolled) throughout and prepared for wall placement (as determined by the Engineer)
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Foundation (subgrade) soft/wet material removed and replaced with compacted MSE backfill or other suitable material as determined by the Engineer
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N/A
NoYesLeveling Pad
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Leveling pad location and dimensions staked and excavated to the correct elevation and horizontal location
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Leveling pad placed correctly according to location and dimension requirements, and constructed level
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Leveling pad material meets Department specifications
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Steps in leveling pads meet specifications and Wall Company authorized drawings
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Leveling pad concrete meets cure time requirements before setting facing elements.
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Leveling pad clean before placement of wall facing elements
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N/A
NoYesSequencing
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Wall facing, backfill, soil reinforcement, drainage elements, filter fabric, etc. placed in correct sequence per authorized drawings and Wall Company's construction manual
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N/A
NoYesDrainage and Filter Fabric
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Drainage elements correctly tied into base drains according to the authorized wall drawings and contract plans
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Drainage elements placed according to the authorized wall drawings and contract plans
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Filter fabric placed according to the drawings
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N/A
NoYesWall Face Bracing
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Wall facing elements temporarily held in place/braced to meet tolerances, according to Wall Company's recommendations
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N/A
NoYesPlaced MSE Backfill
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Maximum fines content (15%) of placed MSE backfill in not exceeded
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Placed MSE backfill meets other gradation requirements
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Placed MSE backfill meets plasticity (PI<6) requirements
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Placed MSE backfill meets electrochemical requirements
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Placed MSE backfill is free of organics and other deleterious material
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Placed MSE backfill not placed in frozen conditions
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Placed MSE backfill has an internal friction angle of not less than 34 degrees
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MSE backfill moisture content requirements for compaction are met
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Placed MSE backfill meets moisture/density requirements
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N/A
NoYesHeavy Equipment Zone
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Heavy equipment not used within 3 feet of back of wall face
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Heavy equipment not used within 3 feet of piles/drilled shafts
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Heavy equipment not used within 3 feet of drainage boxes
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Heavy equipment not used within 3 feet of other obstructions
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N/A
NoYesLifts
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MSE backfill placed starting from near wall face (approximately 3 feet) to back of soil reinforcements
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Lift thicknesses 12 inch (loose) or less as necessary to obtain the specified density