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Safety Cue
Task-specific safety guidance for ordinary work hazards.
Chapter 20 — Capstone
Capstone Project: Build a Complete Paver Patio or Walkway with Drainage and Edging
Plan, lay out, excavate, prepare, drain, pave, cut, restrain, compact, joint, inspect, document, and close out one complete paver patio or walkway, integrating every competency taught in Chapters 1 through 19 into a single finished hardscape.
Field Cue System
These cues appear at the point of work. They identify safety, code, manufacturer, and measurement issues before they become rework or hazards.
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Critical Safety Cue
Serious injury, utility strike, or major damage is possible.
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Field Safety Cue
Practical work-area safety: footing, slopes, traffic, and housekeeping.
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Code Alert
Local requirements vary. Verify permit, inspection, and jurisdictional rules.
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Manufacturer Cue
Follow product-specific instructions for materials and components.
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Measurement Cue
Clearance, layout, elevation, and reference-point guidance.
Job Overview
This capstone chapter qualifies you to integrate every competency taught in Chapters 1 through 19 into one complete, functioning paver patio or walkway. The finished work product is one complete hardscape installation carried from an approved readiness plan through excavation, base, bedding, paver installation, cutting, edging, joint sand, drainage, final inspection, and formal closeout.
You will begin from the exact readiness plan, work-area setup, and layout controls established in Chapters 1 through 3, carry the excavation, base, and bedding sequence from Chapters 4 through 6, install the paver field and cuts from Chapters 7 through 9, restrain and joint the field from Chapter 10, integrate a surface-drainage component from Chapter 17, and close the project with the compiled records and inspection standard required by Chapter 20's own project sequence.
This is the final chapter in the book. The finished, drained, edged, compacted, and documented patio or walkway produced here becomes the handoff site for Book 19 landscaping coordination, and the complete record package produced here is the model for every future hardscape project you plan, execute, and close out independently.
Skills You Will Demonstrate
- HC-115 — Integrate a complete capstone readiness, layout, drainage, excavation, base, and bedding plan from approved site documents before construction begins.
- HC-116 — Excavate, prepare the subgrade, and install and compact an aggregate base to the approved capstone depth, thickness, and slope.
- HC-117 — Install an approved surface-drainage component, screed bedding sand, and protect the bedding layer before paver placement.
- HC-118 — Install the paver field, perimeter and obstacle cuts, border, and edge restraint using the approved pattern, bond, and joint-width controls.
- HC-119 — Compact, joint, and activate the finished paver surface, and verify drainage capture, outlet flow, and overflow function.
- HC-120 — Conduct the final capstone inspection, correct every deficiency, compile complete project records, and issue a formal hardscape closeout for Book 19 handoff.
Where This Skill Fits
Every prior chapter in this book taught one stage of hardscape construction in isolation: inspection, staging, layout, excavation, base, bedding, paver installation, cutting, edging, gravel paths, retaining walls, drainage, capping, steps, borders, surface drainage, repair, and finishing. This chapter does not teach a new physical skill. It requires you to sequence and execute those stages together, in the correct technical order, on one real site, without the chapter boundaries that separated them during instruction.
The System-Sequence Control established at the start of this book — utilities and drainage resolved before excavation, subgrade accepted before base, base accepted before bedding, bedding undisturbed until covered, edge and drainage interfaces coordinated before final compaction, and joint sand installed only in clean, dry joints — governs this chapter exactly as it governed every chapter before it. This is the chapter where that sequence is proven under real project conditions rather than described in outline form.
Scope and Intended Use
This chapter covers:
- obtaining and confirming the approved capstone site plan, dimensions, elevations, drainage plan, utility information, pattern, border, base, bedding, edge, joint-sand, permit, and inspection documents
- completing the Chapter 1 readiness inspection and the Chapter 2 work-area setup for the capstone site
- establishing layout, excavating, preparing subgrade, and installing and compacting base aggregate
- installing an approved surface-drainage component and testing its outlet before covering it
- screeding bedding sand and installing the paver field, cuts, border, and edge restraint
- compacting, jointing, and activating the finished surface, and verifying drainage function
- performing a full final inspection, correcting every deficiency, and compiling complete project records
- issuing a formal hardscape closeout and handing the site off for Book 19 landscaping coordination
This chapter does not authorize the learner to:
- begin excavation on a site that has not passed the Chapter 1 readiness inspection with an approved or conditionally approved decision, all conditions resolved
- substitute this chapter's own procedure for the retaining-wall, stair, or gravel-path procedures in Chapters 11 through 15 if the capstone site plan calls for one of those elements; those chapters' procedures govern any such component built as part of a larger capstone site
- apply sealer as part of this chapter's closeout; sealing follows Chapter 19's cure and compatibility requirements on a separate later visit
- hand off a site to Book 19 landscaping coordination with any unresolved deficiency, unverified drainage outlet, or incomplete record on the closeout package
Any capstone site condition that fails inspection at any stage of this chapter must be corrected and reinspected before the next stage begins.
Reference Conventions
Establish these references before any capstone work begins, and record them on the Capstone Project Record.
| Term | Definition |
|---|---|
| Capstone site | The single approved exterior area, with defined property limits, utilities, drainage, finished elevations, foundation clearances, access, and permit conditions, on which this chapter's complete patio or walkway is built |
| Finished elevation | The approved top-of-paver elevation at each control point on the capstone site plan, from which base thickness and bedding thickness are measured downward |
| Lawful drainage outlet | The discharge point identified on the approved drainage plan as the permitted destination for surface runoff from the capstone site |
| Overflow route | The route surface water follows if the primary drainage component becomes blocked or exceeds capacity, verified before the site is closed out |
| Deficiency list | The running record of every unresolved condition found at any stage of the capstone, carried forward until each item is corrected and reinspected |
| Closeout package | The complete set of utility, layout, excavation, compaction, base, bedding, drainage, paver-lot, cutting, edge, joint-sand, weather, test, inspection, and correction records handed off at the end of this chapter |
Capstone Project Record
Before beginning capstone work, record the project identification directly on the Capstone Project Record:
Site address / location: ______ Project type: ______ (Patio / Walkway) Approved dimensions: ______
Pattern and border: ______ Base and bedding specification: ______ Edge-restraint and joint-sand product: ______
Drainage component and lawful outlet: ______ Permit number(s): ______
Date started: ____________ Crew / installer name: ____________
Prerequisites
- A completed Chapter 1 Hardscape Readiness Worksheet for this exact site, with an approved or conditionally approved decision and every condition resolved
- A completed Chapter 2 work-area setup, material staging plan, and safety inspection for this site
- The approved capstone site plan, dimensions, elevations, drainage plan, utility information, paver pattern, border, base, bedding, edge, joint-sand, permit, and inspection documents
- Demonstrated independent competency in Chapters 3 through 10 and Chapter 17, since this chapter does not reteach layout, excavation, base, bedding, paver installation, cutting, edging, or surface-drainage procedures
- Confirmed utility locating for the full capstone footprint, current and unexpired
Common Field Fundamentals
The capstone applies the same System-Sequence Control introduced at the start of this book to one continuous project: utilities, drainage planning, property limits, access, permits, and material delivery are resolved before excavation; unsuitable soil is removed before compaction; subgrade elevation and slope are accepted before base; base is accepted before bedding; bedding remains undisturbed until covered; edge cuts, drains, restraints, and fixed interfaces are coordinated before final compaction; and polymeric sand is installed only in clean, dry joints.
Plan and layoutReadiness, work area, baseline, corners, curves, offsets, finished elevations
Subgrade and baseExcavation, unsuitable-soil removal, compacted aggregate lifts, slope verification
Drainage and beddingDrainage component installation and test, screed rails, screeded bedding sand
Field, edge, and closeoutPaver field, cuts, border, edge restraint, compaction, joint sand, final inspection, records
Stop-Work Conditions
This chapter requires the same stop-work discipline established in Chapter 1, applied at every capstone stage rather than only at the initial inspection.
HC-115 – HC-120
Capstone Installation Qualification
Capstone Paver Patio or Walkway Construction and Closeout
A. Finished Project Specification
Deliverable: one complete paver patio or walkway built on the approved capstone site, with accepted subgrade, compacted aggregate base at approved thickness and slope, an installed and tested surface-drainage component with a lawful outlet and overflow route, screeded and undisturbed bedding sand, a paver field with the approved pattern and bond, perimeter and obstacle cuts, a border or accent band where specified, edge restraint fastened into the compacted base, fully filled and activated joint sand, and a complete closeout record package.
B. Capstone Record Schedule
| Record | Required Content | Source |
|---|---|---|
| Readiness and setup | Chapter 1 readiness decision, Chapter 2 work-area and staging inspection results | Chapters 1–2 worksheets |
| Layout | Baseline, corners, curves, offsets, diagonals, excavation limits, finished elevations | Field layout per Chapter 3 |
| Excavation and subgrade | Depth, soil conditions, corrections, compaction passes, elevation grid | Field excavation per Chapter 4 |
| Base | Aggregate type, lift count, moisture, compaction passes, final elevation and slope | Field base installation per Chapter 5 |
| Drainage component | Component type, elevation, outlet connection, flow test result, overflow route | Field drainage installation per Chapter 17 |
| Bedding | Rail elevations, screeded thickness, protection until covered | Field bedding installation per Chapter 6 |
| Paver field and cuts | Pattern, bond, alignment checks, cut log, minimum piece sizes | Field paver installation per Chapters 7–9 |
| Border and edge restraint | Border integration, restraint type, fastener spacing, perimeter inspection | Field edge work per Chapters 10 and 16 |
| Compaction and joint sand | Pass count, sand product, activation weather and watering, cure protection | Field jointing per Chapter 10 |
| Final inspection | Dimensions, pattern, joints, cuts, edge security, plane, slope, drainage, transitions, slip and trip hazards | Full-site inspection |
| Deficiency and correction log | Every unresolved item found at any stage, corrective action, and reinspection result | All prior records |
| Closeout and handoff | Maintenance instructions, complete record package, Book 19 handoff confirmation | Full worksheet review |
C. Governing Document Checklist
- Capstone site plan: confirms dimensions, elevations, pattern, border, and finished-surface geometry.
- Drainage plan: confirms the lawful discharge point, pipe or channel route, and overflow route.
- Utility information: confirms utility corridors before excavation and drainage-trench work.
- Base, bedding, edge, and joint-sand specifications: confirm approved thicknesses, products, and installation limits.
- Permit and inspection documents: confirm required permits and inspection checkpoints before, during, and after construction.
D. Acceptance Standards
| Check | Standard |
|---|---|
| Readiness and setup | Chapter 1 readiness decision approved or conditionally approved with all conditions resolved; Chapter 2 work area passed its safety inspection |
| Layout | Baseline, corners, curves, and diagonals verified to the tolerance stated on the capstone site plan before excavation begins |
| Subgrade and base | Subgrade and base elevation, slope, and compaction accepted on a measurement grid before bedding sand is placed |
| Drainage component | Component tested for capture and outlet flow, with a verified overflow route, before it is covered by bedding or backfill |
| Bedding | Screeded to uniform thickness, undisturbed at the time of paver placement, with any disturbed section fully rescreeded |
| Paver field and cuts | Pattern, bond, and joint width consistent with the approved specification; every cut piece meets the stated minimum size |
| Edge restraint and joint sand | Edge restraint fastened into compacted base around the full perimeter; joints fully filled with no washout, haze, or loose units after activation |
| Final inspection | Every item in the Inspection Checklist below passes with no unresolved deficiency before closeout is issued |
E. Preparation — Governing Documents and Prior-Chapter Acceptance
- Obtain the approved capstone site plan, dimensions, elevations, drainage plan, utility information, paver pattern, border, base, bedding, edge, joint-sand, permit, and inspection documents. Confirm every listed document is present and current before proceeding.
- Confirm property limits, setbacks, foundation clearances, accessibility, and lawful drainage outlet. Compare the capstone footprint against the property survey and drainage plan.
- Complete utility locating. Submit or reconfirm the locate request for the full capstone footprint and drainage-trench route.
- Perform the Chapter 1 readiness inspection. Complete a full Hardscape Readiness Worksheet for this site if one is not already approved, or reconfirm an existing approved worksheet remains current.
- Prepare the Chapter 2 work area, material staging, equipment access, silica controls, and public protection. Complete the Chapter 2 work-area safety inspection for the capstone site.
F. Layout
- Establish baseline, corners, curves, offsets, excavation limits, pattern controls, and finished elevations. Use the layout procedure and tolerances established in Chapter 3.
- Square and document the layout. Verify diagonals and record the approved layout on the Capstone Project Record.
- Mark drains, edges, transitions, structures, obstacles, and overflow route. Confirm every marked feature matches the capstone site plan and drainage plan.
G. Excavation, Base, and Drainage
- Excavate to the approved depth. Follow the excavation procedure and stop-work conditions established in Chapter 4.
- Remove organics, roots, soft spots, uncontrolled fill, and unsuitable soil. Correct to the limits established in Chapter 4.
- Shape and compact subgrade. Follow the compaction procedure established in Chapter 4.
- Verify subgrade elevation and slope. Check on a measurement grid against the fixed reference established in Section E.
- Install base aggregate in approved lifts. Follow the lift-thickness and placement procedure established in Chapter 5.
- Compact each lift. Follow the compaction pattern and overlap procedure established in Chapter 5.
- Verify final base thickness, slope, elevation, and edge extension. Check on a measurement grid before installing any drainage component or bedding sand.
- Install channel drain, basin, outlet pipe, or other approved drainage component where specified. Follow the installation procedure established in Chapter 17.
- Test the drainage outlet before covering. Conduct the controlled water-flow test required by Chapter 17 and confirm the overflow route.
H. Bedding and Paver Installation
- Install screed rails. Set rails to the required bedding elevation per Chapter 6.
- Place and screed bedding sand. Follow the screeding procedure established in Chapter 6.
- Remove rails and fill voids. Strike voids flush without overcompacting the bedding.
- Protect the screeded surface. Do not walk, kneel, wheel equipment, or stockpile material on the screeded bedding.
- Establish first paver course and pattern. Follow the pattern-establishment procedure from Chapters 7 and 8.
- Lay the field without disturbing bedding. Place units vertically onto the bedding without sliding them.
- Maintain joint spacing and bond lines. Check against control strings at regular intervals.
- Blend units from multiple pallets where required. Distribute color variation evenly across the field.
- Check alignment and slope throughout. Verify against the fixed reference at regular intervals.
- Mark and cut perimeter, border, curve, drain, post, and obstacle units. Follow the cutting procedure and silica controls established in Chapter 9.
- Replace weak slivers or cracked pieces. Do not install any cut piece below the approved minimum stable size.
- Install border or accent band. Follow the border-integration procedure established in Chapter 16 where a border is specified.
I. Edging, Compaction, and Joint Sand
- Install edge restraint into the compacted base. Follow the fastening procedure and spacing established in Chapter 10.
- Inspect the full field before compaction. Check pattern, joints, cuts, and edge restraint across the entire site.
- Perform initial compaction using the approved protective mat. Follow the pass direction and count established in Chapter 10.
- Correct broken, high, low, or rocking units. Replace or reset units before jointing.
- Install joint or polymeric sand. Sweep into clean, dry joints per Chapter 10.
- Compact, refill, and repeat until joints are full. Follow the repeat-compaction procedure established in Chapter 10.
- Clean all sand from surfaces. Remove sand from paver faces, edges, and adjacent surfaces before activation.
- Activate polymeric sand under approved weather and watering conditions. Follow the exact watering pattern and quantity specified by the manufacturer.
- Protect from rain, irrigation, traffic, and disturbance. Maintain protection through the full cure period.
J. Final Inspection, Correction, and Closeout
- Perform a controlled drainage-flow observation after the system permits it. Confirm capture, outlet flow, and overflow function under the finished surface.
- Inspect dimensions, pattern, joints, cuts, edge security, surface plane, slope, drainage, transitions, slip, and trip hazards. Use the Inspection Checklist below for the full site.
- Prepare a final deficiency list. List every unresolved condition found at any stage of Sections E through I.
- Correct and reinspect every item. Do not close out the project with any unresolved deficiency remaining.
- Apply sealer only after joint, weather, moisture, and cure conditions permit it and only when specified. Follow Chapter 19's compatibility and cure requirements if sealing is included in the capstone site plan.
- Compile utility, layout, excavation, compaction, base, bedding, drainage, paver-lot, cutting, edge, joint-sand, weather, test, inspection, and correction records. Assemble the complete Capstone Record Schedule from Section B into one closeout package.
- Provide maintenance, cleaning, snow, deicing, joint-sand, drainage, load, and sealer instructions. Record these instructions on the closeout package for the property owner.
- Hand off the completed hardscape to Book 19 landscaping coordination. Confirm the site is stable, drained, edged, compacted, and fully documented before handoff.
Common Site Inspection
Review the completed capstone using the same checks regardless of patio or walkway configuration.
- Document check: confirm every governing document listed in Section C is on file with the closeout package.
- Sequence check: confirm every stage in Sections E through J was accepted before the next stage began, with no stage skipped or reordered.
- Drainage check: confirm the drainage component was tested before covering and reconfirmed after the finished surface was complete, with a verified overflow route.
- Surface check: confirm pattern, bond, joint width, edge restraint, and surface plane meet the approved specification across the full field.
- Deficiency check: confirm every item on the final deficiency list is corrected and reinspected, with no open item remaining.
- Closeout check: confirm the complete record package and maintenance instructions are compiled and ready for Book 19 handoff.
Complete the Capstone Inspection Checklist below before issuing the final closeout.
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Failure Points and Troubleshooting
Cleanup
This chapter ends with a stable, drained, compacted, and fully documented paver patio or walkway, not a verbal report of finished work.
- Remove all cutting slurry, excess sand, offcuts, and packaging from the site and dispose of them per Chapter 9 and Chapter 2 controls
- Return excavation, base, and drainage equipment to inspected, cleaned storage condition
- Remove barricades, cones, and temporary protection once the surface has cured and passed final inspection
- Store the complete closeout package, including photographs, with the original Chapter 1 readiness worksheet
- Confirm the property owner has received the maintenance, cleaning, snow, deicing, joint-sand, drainage, load, and sealer instructions
Field Terms
- Capstone Site
- The single approved exterior area on which this chapter's complete patio or walkway is built.
- Finished Elevation
- The approved top-of-paver elevation at each control point, from which base and bedding thickness are measured.
- Lawful Drainage Outlet
- The discharge point identified on the approved drainage plan as the permitted destination for runoff.
- Overflow Route
- The route surface water follows if the primary drainage component is blocked or exceeds capacity.
- System-Sequence Control
- The book-wide requirement that excavation, base, bedding, paver installation, and jointing follow a fixed technical order regardless of chapter boundaries.
- Deficiency List
- The running record of every unresolved condition found at any capstone stage, carried forward until corrected and reinspected.
- Closeout Package
- The complete set of records compiled at the end of the capstone and handed off with the finished site.
- Handoff
- The formal transfer of a stable, drained, edged, compacted, documented hardscape to Book 19 landscaping coordination.
Skill Check
- Why must the Chapter 1 readiness decision be approved or conditionally approved, with all conditions resolved, before capstone excavation begins?
- Why must the surface-drainage component be tested before it is covered by bedding sand, and again after the finished surface is complete?
- Explain the System-Sequence Control rule that base must be accepted before bedding, and describe one problem that results from violating it on a real capstone site.
- What must happen to a deficiency discovered during base installation, and how is the correction different from a deficiency discovered after joint sand is activated?
- Why does edge restraint fastened into loose bedding sand instead of compacted base fail to meet the acceptance standard?
- What thirteen categories of record must appear in the completed closeout package?
- Why is sealing excluded from this chapter's closeout even if the capstone site plan eventually calls for a sealed surface?
- What must be true of the site before it is handed off to Book 19 landscaping coordination?
- Why does this chapter not reteach the layout, excavation, base, bedding, cutting, or edge-restraint procedures from earlier chapters?
- How does the capstone's stop-work discipline for conditions discovered during excavation differ from, or match, the stop-work discipline taught in Chapter 1?
Competency Rubric
| Competency | Independent Pass Standard | Not Demonstrated | With Assistance | Independently |
|---|---|---|---|---|
| HC-115 | Confirms the Chapter 1 readiness plan and all governing capstone documents before excavation, with the site square and elevations verified per Section F | |||
| HC-116 | Excavates, prepares subgrade, and installs and compacts base aggregate to the approved capstone depth, thickness, and slope, verified on a measurement grid | |||
| HC-117 | Installs and tests the approved drainage component before covering it, and screeds undisturbed bedding sand to uniform thickness | |||
| HC-118 | Installs the paver field, cuts, border, and edge restraint to the approved pattern, bond, joint width, and fastening standard | |||
| HC-119 | Compacts, joints, and activates the finished surface, and verifies drainage capture, outlet flow, and overflow function after installation | |||
| HC-120 | Completes the final inspection, corrects and reinspects every deficiency, compiles the full closeout record package, and issues a documented Book 19 handoff |
Mark one column per competency. Only Demonstrated Independently awards the competency; Demonstrated with Assistance authorizes additional supervised practice but does not complete the requirement.
Inspection Checklist — Capstone Final Inspection Worksheet
| Record | Finding | Deficiency (if any) | Prerequisite / Corrective Action | Status |
|---|---|---|---|---|
| Readiness and setup | ||||
| Layout and square | ||||
| Subgrade and base | ||||
| Drainage component and test | ||||
| Bedding | ||||
| Paver field, pattern, and cuts | ||||
| Border and edge restraint | ||||
| Compaction and joint sand | ||||
| Post-installation drainage flow | ||||
| Surface plane, slope, and transitions | ||||
| Slip and trip hazards | ||||
| Closeout package completeness |
Closeout decision: ______ (Approved for Handoff / Conditionally Approved / Not Ready) Conditions or reasons: ____________
Date: ____________ Inspector name: ____________ Reinspection date (if applicable): ____________
Performance Check
With the capstone site complete and every record on the Capstone Final Inspection Worksheet completed, review the finished project against the Acceptance Standards table and confirm that readiness and setup were accepted before excavation, subgrade and base were accepted before bedding, the drainage component was tested before and after covering, the paver field meets the approved pattern and joint standard, edge restraint and joint sand are fully secure, and the closeout package is complete. If any item is incomplete or a deficiency remains unresolved, correct it and reinspect the affected record before issuing the final closeout and handoff.
Project Closeout
You have completed the capstone chapter of the hardscaping sequence: building a complete paver patio or walkway with drainage and edging. This chapter required you to integrate a complete capstone readiness, layout, drainage, excavation, base, and bedding plan (HC-115), excavate and compact an approved base (HC-116), install and protect drainage and bedding (HC-117), install the paver field, cuts, border, and edge restraint (HC-118), compact, joint, and verify drainage function (HC-119), and complete final inspection, correction, records, and closeout (HC-120).
You now have one complete, stable, drained, edged, compacted, and fully documented paver patio or walkway, built by carrying every competency from Chapters 1 through 19 through one continuous, accountable project rather than a series of isolated exercises.
Retain the complete closeout package, including the Chapter 1 readiness worksheet, all Chapter 2 through 19 records referenced in this chapter, photographs, and the Capstone Final Inspection Worksheet. Hand this package off with the completed site to Book 19 landscaping coordination.