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Safety Cue
Task-specific safety guidance for ordinary work hazards.
Project 06
Build a Small Ground-Level Deck Frame
Build, square, brace, connect, and inspect one small detached ground-level deck frame on the approved footings or posts set in Project 05, establishing the beam bearing, joist layout, blocking, and bracing that every later chapter in this book's deck sequence depends on.
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, fire, or major damage is possible.
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Field Safety Cue
Practical work-area safety: lighting, cords, footing, 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 tools, materials, and equipment.
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Measurement Cue
Clearance, layout, spacing, and reference-point guidance.
Job Overview
This project qualifies you to build the structural frame of a small detached ground-level deck on the posts and footings accepted in Project 05, and to bring that frame to square, level or approved slope, and full connector completion before any decking is installed over it. The finished work product is a beam-supported, joist-framed deck frame: beams set on accepted bearing, a squared and braced rim-joist perimeter, joists installed on layout with every required hanger fastener, blocking and bridging in place, lateral and uplift connections completed, and the whole assembly inspected and documented before it is concealed by decking.
You will confirm the posts and supports from Project 05 are accepted and ready to carry load, inspect beam and joist material, assemble and set beams on approved bearing, square and brace the rim-joist perimeter, lay out and install joists with the required hangers and blocking, and complete a framing inspection before Project 07 covers the frame with decking boards.
This project depends entirely on Project 05. No beam is set on a post that has not been plumbed, aligned, connected, and released to framing. The frame built here carries every deck board, guard post, and stair connection addressed in the chapters that follow, so square, level, and connector accuracy established now are not corrected later without removing completed decking.
Skills You Will Demonstrate
- OS-031 — Install beams on accepted bearing, post caps, or approved connections at the correct level or specified slope.
- OS-032 — Install rim or end joists and square the perimeter frame using diagonal measurements.
- OS-033 — Lay out joists from an approved reference and fasten them on bearing or in listed hangers with the full required fastener set.
- OS-034 — Install blocking, bridging, joist restraints, and lateral or uplift connections as specified.
- OS-035 — Square, brace, and hold the frame stable through installation without notching or drilling members outside approved limits.
- OS-036 — Inspect and document the completed deck frame, including dimensions, diagonals, bearing, connectors, and blocking, before decking begins.
Where This Skill Fits
This project follows directly from the accepted, plumb, aligned posts in Project 05 and precedes Project 07's decking installation, which conceals the framing built here. Project 08's stair stringers attach to this frame's rim or approved landing framing. Project 09's guard posts require a verified structural load path into the blocking installed in this project. A frame that is out of square, under-blocked, or missing required hanger fasteners when this project closes carries that error into every later chapter that builds on or conceals it.
The habit built here — square the frame with diagonals before trusting it, drive every required hanger fastener rather than a partial set, and inspect before concealment — is the same habit that governs every framed structure in this book, from a small deck to the Project 20 capstone.
Scope and Intended Use
This project covers:
- confirming posts and supports from Project 05 are accepted and ready to carry beam and joist loads
- inspecting and assembling beams according to the approved built-up fastening schedule, and setting them on approved bearing
- installing and squaring a rim-joist perimeter using diagonal measurements
- laying out and installing joists on bearing or in listed hangers with the full required fastener set
- installing blocking, bridging, joist restraints, and lateral or uplift connections as specified
- bracing the frame to hold square and level throughout construction
- inspecting and documenting the completed frame before it is concealed by decking
This project does not authorize the learner to:
- set a beam or joist on a post or support that has not passed Project 05's plumb, alignment, and connector checks
- assemble a built-up beam using a fastening pattern other than the one specified in the approved plan
- notch, drill, or cut a beam, joist, or rim member outside the limits approved for that member
- proceed to Project 07 decking with a frame that has not passed the dimension, diagonal, bearing, connector, and blocking checks in this project
Any frame condition that cannot be brought to square, level, or full connector completion within the approved tolerance must be corrected and rechecked before this project is declared complete.
Reference Conventions
Establish these references before any beam is set, and do not change them mid-project.
| Term | Definition |
|---|---|
| Bearing | The full, approved contact between a beam or joist and the support that carries its load, as specified by the approved detail |
| Rim joist | The joist forming the outer edge of the frame, to which the perimeter is squared and intermediate joists are referenced |
| Crown | The slight edge-wise curve naturally present in a joist, installed consistently crown-up across the frame |
| Joist hanger | The specified connector supporting a joist end where direct end-bearing is not used, filled with every required fastener hole |
| Blocking | Short framing members installed between joists to resist rotation, transfer load, and support edges, blocking panels, or fixtures |
| Lateral and uplift connection | The specified hardware resisting sideways movement or upward force on the frame, installed where the approved detail requires it |
| Diagonal check | Measuring both corner-to-corner diagonals of a rectangular frame to confirm square; equal diagonals confirm a true rectangle |
Deck Frame Record
Before setting any beam, record the approved framing specification directly on the site-inspection worksheet:
Beam size / species / treatment: ______ Joist size / spacing: ______ Hanger and connector schedule: ______
Date started: ____________ Builder name: ____________
Prerequisites
- Completed and accepted Project 05 post installation, with plumb, alignment, connector, and top-elevation records on hand for cross-reference
- Approved deck dimensions, freestanding support plan, footing and post locations, beam and joist sizes, spans, cantilevers, blocking, connectors, and finished elevation
- Beam and joist lumber on site, inspected for grade, treatment, crown, warp, damage, and length before framing begins
- Sufficient hangers, hanger fasteners, blocking material, and lateral or uplift connectors to complete the full frame without running short mid-task
- A blank site-inspection worksheet and the completed Project 05 post installation records for cross-reference
Common Field Fundamentals
Every framed structure in this book, from a small ground-level deck to a shed floor platform, depends on the same sequence taught here: confirm the support is ready, set and level the primary bearing member, square and brace the perimeter, lay out and install secondary framing with full connectors, add blocking and lateral resistance, then inspect before concealment. Learning that sequence on this deck frame means every later framed structure you build starts from a method you already trust.
Support confirmationPosts and footings verified accepted before beams are loaded
Beam installationBeams assembled, set on bearing, braced, and checked level or to slope
Perimeter squaringRim joists installed and squared by diagonal measurement, then braced
Joist layoutJoists marked from a consistent reference, crowned, and installed on bearing or in hangers
Blocking and connectionsBlocking, bridging, restraints, and lateral or uplift hardware installed as specified
Framing inspectionDimensions, diagonals, bearing, connectors, and blocking checked before decking
Support Confirmation Before Any Beam Is Loaded
No beam is set on a post until Project 05's inspection record confirms that post is plumb, aligned, connected, and released to framing. Loading a beam onto a post that has not been confirmed risks transferring an undetected plumb or connection defect into the entire frame above it.
OS-031 – OS-036
Deck Framing / Structural Qualification
Build a Small Ground-Level Deck Frame
A. Finished-Project Specification
Deliverable: a complete detached ground-level deck frame with beams set on accepted bearing, a squared and braced rim-joist perimeter, joists installed on the approved layout with full hanger fastener sets, blocking, bridging, and lateral or uplift connections installed as specified, and the assembly inspected and documented before decking.
B. Assessed Deck Framing Schedule (Component Schedule)
| Component | Quantity | Format | Standard | Preparation / Purpose |
|---|---|---|---|---|
| Support confirmation record | 1 | Worksheet cross-reference | Posts confirmed plumb, aligned, and connected before loading | Confirms every beam is loaded onto an approved support |
| Beam installation record | 1 per beam | Worksheet entry + photos | Assembled per approved schedule, set on bearing, level or to slope | Confirms the primary bearing member is correctly installed |
| Perimeter square record | 1 per frame | Worksheet notes | Diagonals equal within approved tolerance | Confirms a true rectangular frame before joist installation |
| Joist layout and connector record | 1 per joist | Worksheet entry | Layout followed, crown consistent, hanger fasteners complete | Confirms every joist bears load correctly |
| Blocking and connection record | 1 per frame | Worksheet notes + photos | Blocking, bridging, restraints, lateral/uplift hardware installed as specified | Confirms lateral stability and edge support |
| Framing inspection record | 1 | Signed worksheet | All sections complete and confirmed before decking | Authorizes handoff to Project 07 |
C. Material and Resource Takeoff
- Beams and joists: approved size, grade, treatment, and exposure rating sufficient for the full frame, with extra length allowed for trimming.
- Hangers and connectors: the specified joist hanger, beam connector, and lateral or uplift hardware schedule, with the complete fastener count for every connector.
- Blocking and bridging: material sufficient to block every required line and support every specified edge or fixture location.
- Bracing materials: temporary brace lumber and fasteners sufficient to hold the perimeter square through joist installation.
- Documentation: the site-inspection worksheet, Project 05 post installation records, and photographs required for the framing record.
D. Acceptance Standards
| Check | Standard |
|---|---|
| Support confirmation | Every beam bears on a post confirmed plumb, aligned, and connected before loading |
| Beam installation | Beams assembled per the approved schedule, set on full approved bearing, level or to the specified slope |
| Perimeter square | Diagonal measurements equal within the approved tolerance before any joist is installed |
| Joist layout and bearing | Joists installed on the approved layout, crowned consistently, with every required hanger fastener driven |
| Blocking and connections | Blocking, bridging, restraints, and lateral or uplift hardware installed at every specified location |
| Framing inspection | Dimensions, diagonals, bearing, connectors, and blocking checked and photographed before decking begins |
E. Preparation — Review and Material Inspection
- Review deck dimensions, freestanding support plan, footing and post locations, beam sizes, joist sizes, spans, cantilevers, blocking, connectors, and finished elevation. Confirm the approved specification before touching any framing member.
- Confirm posts, supports, and drainage are accepted. Cross-check against the Project 05 post installation records before proceeding.
- Verify required clearance and ventilation between framing, soil, vegetation, and structures. Confirm the approved elevation preserves drainage beneath the frame.
- Inspect beams and joists for grade, treatment, crown, warp, damage, and length. Set aside any member that does not meet the specification.
F. Beam Installation Procedure
- Assemble built-up beams only according to the approved fastening schedule. Do not substitute a different nail or bolt pattern for the specified schedule.
- Set beams on direct bearing or listed post caps. Confirm full approved bearing contact at every post.
- Align and temporarily brace beams. Hold each beam in position and orientation before checking level.
- Check beam level or approved slope. Adjust bracing and shim only as the approved detail permits before proceeding.
G. Rim Joist and Frame Squaring Procedure
- Install end or rim joists. Set the perimeter members to the approved outside dimensions.
- Square the perimeter frame using diagonal measurements. Adjust corners until both diagonals match within the approved tolerance.
- Brace the frame to hold square. Install temporary bracing sufficient to prevent the perimeter from shifting during joist installation.
H. Joist Layout and Installation Procedure
- Mark joist layout from the approved reference. Use a chalk line and tape measure to lay out every joist location along the rim.
- Crown joists consistently where required. Sight each joist and mark the crown before installation.
- Install joists on bearing or in listed hangers. Seat each joist fully before fastening.
- Install every required hanger fastener. Fill every specified fastener hole in every hanger with no exceptions.
- Maintain approved cantilever, bearing, and end clearance. Verify each joist end meets the approved dimension before final fastening.
- Install blocking, bridging, joist restraints, and rim connections. Complete every location shown on the approved framing plan.
- Install lateral and uplift connections where specified. Use the specified hardware at every required location.
- Do not notch or drill joists outside approved limits. Verify any required opening against the approved detail before cutting.
- Protect field cuts and holes in treated lumber. Apply preservative to every cut end or drilled hole before the member is concealed.
- Verify stair, guard-post, border, picture-frame, and decking-support blocking. Confirm every later-chapter connection point has the blocking it will require.
I. Recheck and Closeout Procedure
- Check frame dimensions, diagonals, level or slope, beam bearing, joist spacing, connectors, blocking, and bracing. Correct any component that falls outside the approved tolerance.
- Complete required framing inspection before decking. Confirm every item on the Assessed Deck Framing Schedule is recorded and accepted.
- Photograph concealed framing. Record every hanger, blocking location, and connection that decking will cover, and label and retain the completed record for reference throughout the rest of this book.
Common Inspection Review
Inspect the completed deck frame using the same checks regardless of beam or joist configuration.
- Support check: confirm every beam bears on a post already accepted, plumb, and connected.
- Beam check: confirm beams are assembled per the approved schedule, set on full bearing, and level or to the specified slope.
- Square check: confirm the perimeter diagonals are equal within the approved tolerance.
- Joist check: confirm layout, crown direction, and full hanger fastener sets at every joist.
- Blocking check: confirm blocking, bridging, restraints, and lateral or uplift hardware are installed at every specified location.
- Documentation check: confirm the framing inspection is recorded and photographed before decking begins.
Complete the Deck Frame Worksheet in the Inspection Checklist section below before beginning Project 07.
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Failure Points and Troubleshooting
Cleanup
This project ends with the frame braced, inspected, and documented — not concealed before it is checked.
- Leave all temporary bracing in place until decking or permanent bracing establishes a stable, connected frame
- Photograph every hanger, blocking location, and connector before decking conceals the frame
- Store unused hangers, fasteners, and blocking material for reuse in later framing chapters
- Label and file the completed deck frame worksheet with the Project 05 post installation records
- Return the documented framing record to the project records for reference throughout the rest of this book
Field Terms
- Bearing
- The full, approved contact between a beam or joist and the support that carries its load.
- Rim Joist
- The joist forming the outer edge of the frame, used to reference perimeter square.
- Crown
- The slight edge-wise curve in a joist, installed consistently crown-up.
- Joist Hanger
- The specified connector supporting a joist end, filled with every required fastener hole.
- Blocking
- Short framing members installed between joists to resist rotation and support edges or fixtures.
- Bridging
- Diagonal or solid members installed between joists to maintain spacing and resist twisting.
- Lateral / Uplift Connection
- Specified hardware resisting sideways movement or upward force on the frame.
- Diagonal Check
- Measuring both corner-to-corner diagonals of a rectangular frame to confirm square.
- Cantilever
- The portion of a joist extending beyond its beam bearing, limited to the approved dimension.
- Deck Frame Worksheet
- The document recording beam, joist, connector, blocking, and inspection findings for the frame.
Skill Check
- Why must a beam never be set on a post that has not passed Project 05's plumb, alignment, and connector checks?
- Why is the rim-joist perimeter squared by diagonal measurement rather than by eye before joists are installed?
- Why must every hole in a joist hanger be filled with the specified fastener rather than a partial set?
- Why are joists installed with a consistent crown direction rather than as they are picked up?
- What is the difference between blocking and bridging, and why does a deck frame require both where specified?
- Why must guard-post, stair, and border blocking be verified before decking conceals the frame?
- What must be done to any field cut or hole made in treated lumber before it is installed?
- What are three possible reasons a deck frame might fail its square or connector check, and how does the learner confirm which one occurred?
- What must the learner do before refastening a beam that was found out of level?
- Why does this chapter require the framing inspection to be documented and photographed before Project 07 begins?
Competency Rubric
| Competency | Independent Pass Standard | Not Demonstrated | With Assistance | Independently |
|---|---|---|---|---|
| OS-031 | Installs beams on accepted bearing at the correct level or specified slope | |||
| OS-032 | Installs rim joists and squares the perimeter using diagonal measurements | |||
| OS-033 | Lays out and fastens joists on bearing or in listed hangers with the full required fastener set | |||
| OS-034 | Installs blocking, bridging, restraints, and lateral or uplift connections as specified | |||
| OS-035 | Squares, braces, and holds the frame stable through installation without unapproved notching or drilling | |||
| OS-036 | Inspects and documents the completed frame, including dimensions, diagonals, bearing, connectors, and blocking |
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 — Deck Frame Worksheet
| Item | Standard | Recorded Finding | Confirmed (Y/N) | Correction (if any) |
|---|---|---|---|---|
| Support confirmation | Posts accepted, plumb, and connected before loading | |||
| Beam installation | Assembled per schedule, full bearing, level or specified slope | |||
| Perimeter square | Diagonals equal within approved tolerance | |||
| Joist layout / bearing | Layout followed, crown consistent, hangers seated | |||
| Hanger fasteners | Every required fastener hole filled | |||
| Blocking / bridging / lateral hardware | Installed at every specified location |
Number of joists installed: ____________ Hanger and connector schedule used: ____________
Deck frame declared complete: ______ (Pass/Fail) Date: ____________ Builder name: ____________
Performance Check
With all six worksheet items recorded, review the completed frame against the Acceptance Standards table and confirm every beam bears on an accepted, plumb, connected post, beams are assembled per the approved schedule and set level or to the specified slope, the perimeter diagonals are equal within tolerance, joists are installed on the approved layout with consistent crown and full hanger fastener sets, blocking, bridging, and lateral or uplift hardware are installed at every specified location, and the framing inspection is recorded and photographed. Complete the Deck Frame Worksheet and correct any incomplete item before beginning Project 07. If an item is incomplete, identify whether the gap is an unconfirmed support, an unsquared perimeter, an incomplete hanger fastener set, or missing blocking or connector hardware before rechecking it.
Project Closeout
You have completed the sixth project in the outdoor structures sequence: building a small ground-level deck frame. This project required you to install beams on accepted bearing (OS-031), install rim joists and square the perimeter (OS-032), lay out and fasten joists with full hanger fastener sets (OS-033), install blocking, bridging, and lateral or uplift connections (OS-034), square and brace the frame through installation (OS-035), and inspect and document the completed frame (OS-036).
You now have a square, level or sloped, fully connected and blocked deck frame, braced and ready to carry the decking boards addressed in the next project. That work carries directly into the next project: laying out, fastening, and inspecting the deck-board surface over this accepted frame.
Keep bracing in place and store your documented deck frame record with the project records. You will reference the hanger and connector schedule, blocking locations, and framing inspection recorded here throughout the remaining deck chapters of this book.