Carpentry NC II cheat sheet

A complete worksite record for a carpentry task typically carries: date, location/unit, task description, materials and quantities used, labor hours and names, equipment used, and the signature of the person who performed and the person who verified.

Verbal instructions become enforceable only when written: repeat the instruction back to the speaker, record it in the logbook or site diary, and secure initials from the issuer before starting work.

Daily time records (DTR) and accomplishment reports must reconcile: total man-hours on the accomplishment report equals the sum of DTR entries for the crew on that date.

Material requisition slips require the item description, unit of measure, quantity requested, quantity issued, and the signature of the requester and the storekeeper; discrepancies are annotated on the slip, not erased.

Site diaries are contemporaneous records: entries are made on the day of the event, corrections are single-line strike-throughs with initials and date, never overwriting or correction fluid.

Written reports follow the technical-report structure: objective or background, methodology or scope, findings or observations, conclusion, and recommendation, with attachments such as photos and test results referenced by number.

Toolbox or pre-task meetings are documented with date, topic, attendees' names and signatures, and issues raised; attendance records support both safety and labor compliance.

Communication hierarchy on a construction site runs from worker to leadman or foreman, then to the site engineer or supervisor; skipping levels is reserved for safety-critical or emergency reports.

Confidential information such as payroll data, bid prices, and personnel records is shared only on a need-to-know basis; unauthorized disclosure is a disciplinary and contractual matter.

Hierarchy of control, most to least effective: elimination, substitution, engineering controls, administrative controls, then personal protective equipment (PPE). PPE is the last line of defense.

Mandatory carpentry PPE: hard hat, safety footwear, eye protection for cutting and nailing, hearing protection above 85 dBA exposure, gloves for handling materials, and respiratory protection when cutting masonry or using solvent-based finishes.

Fall protection is required at heights of 1.8 m (6 ft) or more in general construction; guardrails, personal fall-arrest systems, and safe access ladders are the standard controls.

Scaffold inspection is done by a competent person before each work shift and after any alteration or strong wind; a scaffold tag records the inspection date and pass/fail status.

Portable circular saws must have a functioning lower blade guard and a riving knife where required; the blade is disconnected from power before any adjustment or blade change.

Housekeeping rules: no loose materials on walkways, scrap lumber de-nailed and stacked, and combustible waste removed daily; a clean site reduces slips, trips, and fire load.

Environmental compliance: segregate waste into biodegradable, recyclable, and residual or hazardous; used oil, paint cans, and solvent rags are hazardous waste and never poured into drains or soil.

Dust and silica control: wet cutting or dust extraction with respiratory protection when cutting concrete, brick, or tile; dry sweeping of fine dust is avoided in favor of vacuuming or wet methods.

Incident reporting: any injury, near miss, or property damage is reported to the supervisor immediately and recorded in the accident or incident log; a near miss is investigated like an accident.

Hand tools are inspected before use: hammer handles free of cracks and wedges tight, chisels sharp with intact hoops, saws with secure handles, and levels checked for accuracy by reversing the level on the same surface.

Power tools are matched to the task and rated voltage; extension cords are rated for the tool's current draw, checked for damaged insulation, and protected by a residual current device (RCD/GFCI).

Blades and bits are selected by material and tooth configuration: crosscut or combination teeth for general framing, fine-tooth blades for trim, and carbide-tipped teeth for engineered and abrasive materials.

Sharpening angles for common carpentry edges: plane irons and chisels typically 25 degrees primary bevel with a 30-degree micro-bevel; a sharp edge cuts with less force and is safer than a dull one.

Lumber is stacked on stickers (spacers) on level bearers, off the ground, under cover, and with the same species and grade together; plywood and boards are stored flat to prevent warping.

Cement is stored on pallets in a dry, ventilated area, used first-in first-out, and bags older than the manufacturer's shelf life are tested or rejected; moisture causes lumping and strength loss.

Lifting rule: keep the load close to the body, bend at the knees, keep the back straight, and get help or use mechanical aids for loads beyond a safe two-person lift; team lifting is coordinated by one signal caller.

Maintenance schedule: hand tools cleaned and oiled after use, power tool brushes and cords checked monthly, and defective tools tagged out of service and removed from the work area until repaired.

Fasteners and hardware are stored by size and type in labeled bins; mixing lengths causes wrong-length nailing and wasted material, and loose nails on the floor are a puncture hazard.

Drawing set order and purpose: architectural plans show layout and finishes, structural plans show framing and member sizes, electrical and plumbing plans show rough-in locations, and the specifications govern quality and materials.

Scale reading: the scale ratio is drawing distance to actual distance; a 1:50 detail means 1 mm on paper equals 50 mm on site, so a 20 mm line represents 1,000 mm actual.

Elevation datum and benchmarks: floor levels are referenced to a stated datum (for example, finished floor at 0.00), and all vertical dimensions are taken from that datum, not from the ground.

Grid lines and column references locate all work; a member's position is stated as grid-to-grid plus an offset, and dimensions are read from the dimension line nearest the feature.

Symbols and abbreviations: door and window tags (D1, W2), section and detail callouts, north arrow, and material hatching are cross-referenced to the schedule or legend before ordering materials.

Schedules govern quantities: door and window schedules give size, type, and hardware; the structural schedule gives member size, species or grade, and spacing for framing.

General notes outrank drawn dimensions only where the specification states so; the standard order of precedence is typically contract documents, specifications, then drawings, with the larger-scale drawing governing over the smaller.

A discrepancy between plans is resolved by a request for information (RFI) to the designer; work proceeds only on the written response, and the RFI number is recorded in the as-built file.

The 3-4-5 method squares a corner: measure 3 units along one line and 4 along the other; the diagonal between the points must be 5 units, and multiples (6-8-10, 9-12-15) work the same way.

A building rectangle is checked by equal diagonals: measure both diagonals corner to corner; equal diagonals confirm squareness, and unequal diagonals require adjusting the long side.

String lines and batter boards are set beyond the excavation line so the strings can be re-stretched after digging; the line is transferred to the footing with a plumb bob.

Level transfer uses a spirit level, water level, or laser level referenced to the established benchmark; a site benchmark is a fixed, protected point that is never moved without recording the new elevation.

Wall layout on a slab is marked from the grid or a fixed reference edge, with chalk lines snapped once and not re-snapped over a wrong line; offsets are measured perpendicular to the reference.

Stud layout is set at a standard spacing (400 mm or 600 mm centers, or 16 in or 24 in) measured from a common starting corner so that sheet goods break on stud centers.

Opening layout is set from the same reference as the studs; the rough opening is the finished opening plus the frame and shim allowance, and is checked against the door or window schedule.

Plumb and level checks are done before any permanent fixing: a post is plumb in two perpendicular directions, and a plate is level along its full length before nailing.

Formwork design considers the fresh concrete pressure, the weight of concrete plus formwork and construction loads, and the allowable deflection of the sheathing and supports.

Form panels are coated with a release agent before placing reinforcement; the agent is applied to clean forms and must not contaminate the reinforcement or construction joints.

Shoring and props are plumbed and braced in two directions, with base plates on firm bearing and heads bearing on solid members; props are not placed on backfilled or unconsolidated ground without a spreader.

Form ties and walers are spaced per the form design; overtightening crushes the sheathing and undertightening allows bulging and blowouts under pour pressure.

Camber is built into long-span beams and slabs to compensate for deflection; the specified camber is measured at midspan before the pour.

Form removal times depend on concrete strength, not on a fixed calendar: vertical forms for columns and walls are typically removed after the concrete can stand without damage, while soffit forms and props stay until the concrete reaches the specified stripping strength.

Props under beams and slabs are removed in a planned sequence, usually from midspan toward supports and from the least loaded to the most loaded areas, with reshoring where the design requires it.

After stripping, forms are cleaned, release agent reapplied, and damaged panels tagged for repair; formwork is stacked flat and supported to prevent warping.

Formwork tolerances: check alignment, plumbness, and dimensions against the drawings before and during the pour, because correction after concrete sets is costly.

Platform framing sequence: sill plate anchored to the foundation, floor joists with rim joists and blocking, subfloor, wall panels laid out and tilted up, then top plates and ceiling or roof framing.

Wall framing members: sole plate, top plates (double top plate for load distribution and lap at corners), studs at the specified spacing, headers over openings with jack and king studs, and cripple studs above and below openings.

Header sizing and support: a header spans the opening and bears on jack studs at each end; the bearing length and header size come from the structural plans, not from guesswork.

Roof framing members: ridge board or beam, common rafters, hip and valley rafters, jack rafters, ceiling joists, collar ties, and rafter ties; the ridge is supported by the rafters or by posts depending on the design.

Rafter length is found from the run and the pitch: unit rise per unit run gives the rafter length multiplier, and rafter length equals run times the multiplier for the given pitch.

Pitch is rise over run expressed as a ratio (for example 4:12 means 4 units rise per 12 units run), and the angle equals the arctangent of rise divided by run.

Bracing and lateral stability: let-in or diagonal bracing, sheathing, and blocking provide shear resistance; a wall is not stable until braced or sheathed, and temporary bracing stays until permanent bracing is complete.

Nailing schedule: common nailing is 16d for framing connections and 8d or 10d for sheathing, with edge distance and spacing per the plans; overdriven or missed nails are corrected before covering.

Framing checks before covering: stud spacing, plumb and straightness, header size and bearing, opening dimensions, and blocking for fixtures; the work is inspected and signed off before insulation and sheathing.

Joinery types: butt, lap, half-lap, mortise and tenon, dovetail, dowel, biscuit, and dado or rabbet; each is chosen for the load direction and appearance requirement.

A mortise and tenon joint transfers load through the tenon shoulders; the tenon thickness is typically one-third of the rail thickness, and the joint is glued and pinned where specified.

Dado and rabbet joints are used for shelving and cabinet carcasses; the dado depth is about one-third the board thickness, and the fit is snug but not forced.

Door and window installation: the frame is plumb, level, and square, shimmed at hinge and lock points, and checked by measuring diagonals; the gap around the door is even, and the swing and latch operate freely.

Trim and molding: baseboard, casing, and crown are cut with mitered or coped joints; inside corners are coped for a tight fit, and outside corners are mitered and glued or splined.

Wood movement: solid wood expands across the grain with moisture; panels are floated in grooves, and fasteners and gaps allow movement to prevent splitting and buckling.

Sanding sequence: start with a coarser grit and progress through finer grits (for example 80, 120, 180), sanding with the grain; finish is applied only after dust is removed.

Finish application: sealers and topcoats are applied in thin coats, with sanding between coats; solvent-based finishes need ventilation and respiratory protection.

Hardware installation: hinge and lock positions are marked from the door and frame, and pilot holes are drilled to prevent splitting; hardware is checked for smooth operation before handover.

Quality control is inspection at the source: check materials on delivery against the purchase order and specifications, check work at each stage, and record the result before covering up.

Hold points are stages where work cannot proceed without inspection and sign-off, such as before pouring concrete, before closing walls, and before applying finishes.

Tolerances for finished work: plumb and level within the specified allowance, straight edges checked with a level or straightedge, and dimensions checked against the drawings with a tape.

A punch list records defects found at inspection with location, description, and the responsible trade; each item is closed and verified, and the list is signed off before final acceptance.

As-built drawings record the actual installed conditions, including changes from the original plans, and are submitted with the completion documents.

Completion documents typically include the certificate of completion, as-built drawings, test and inspection reports, warranties, and the operation and maintenance manual.

Concrete strength acceptance is based on test specimens (cylinders or cores) tested per the specification; results below the specified strength trigger evaluation, not automatic rejection.

Material testing and sampling: samples are taken per the specification, labeled with location and date, and tested in an accredited laboratory; results are recorded and compared with the acceptance criteria.

Final inspection verifies that the work matches the approved plans, the punch list is closed, and the site is cleaned and turned over with keys, manuals, and warranties.

A carpenter's duty of care covers safety of self, co-workers, and the public; unsafe work is stopped and reported, and the stop-work authority is exercised without fear of reprisal.

Conflict of interest: a worker does not accept gifts, commissions, or side work that could influence decisions on materials, suppliers, or subcontractors; any potential conflict is disclosed in writing.

Confidentiality: client plans, pricing, and personal data are kept confidential and used only for the project; documents are returned or disposed of securely at project end.

Honest reporting: hours worked, materials used, and test results are reported accurately; falsifying records is fraud and grounds for dismissal and legal action.

Respect and non-discrimination: co-workers are treated with respect regardless of gender, age, religion, or ethnicity; harassment and bullying are reported through the established channel.

Substance and fitness for duty: no working under the influence of alcohol or drugs; impaired work with tools and at height endangers the whole crew.

Environmental and community responsibility: noise, dust, and traffic are controlled, public access is restricted around the site, and damage to third-party property is reported and compensated.

Continuous competence: only tasks within one's training and certification are performed, and unfamiliar work is done under supervision or referred to a qualified person.

Professional communication: commitments on schedule and quality are kept, delays are communicated early, and disputes are raised through the proper channel rather than through confrontation on site.

A complete worksite record for a carpentry task typically carries: date, location/unit, task description, materials and quantities used, labor hours and names, equipment used, and the signature of the person who performed and the person who verified.

Verbal instructions become enforceable only when written: repeat the instruction back to the speaker, record it in the logbook or site diary, and secure initials from the issuer before starting work.

Daily time records (DTR) and accomplishment reports must reconcile: total man-hours on the accomplishment report equals the sum of DTR entries for the crew on that date.

Material requisition slips require the item description, unit of measure, quantity requested, quantity issued, and the signature of the requester and the storekeeper; discrepancies are annotated on the slip, not erased.

Site diaries are contemporaneous records: entries are made on the day of the event, corrections are single-line strike-throughs with initials and date, never overwriting or correction fluid.

Written reports follow the technical-report structure: objective or background, methodology or scope, findings or observations, conclusion, and recommendation, with attachments such as photos and test results referenced by number.

Toolbox or pre-task meetings are documented with date, topic, attendees' names and signatures, and issues raised; attendance records support both safety and labor compliance.

Communication hierarchy on a construction site runs from worker to leadman or foreman, then to the site engineer or supervisor; skipping levels is reserved for safety-critical or emergency reports.

Confidential information such as payroll data, bid prices, and personnel records is shared only on a need-to-know basis; unauthorized disclosure is a disciplinary and contractual matter.

Hierarchy of control, most to least effective: elimination, substitution, engineering controls, administrative controls, then personal protective equipment (PPE). PPE is the last line of defense.

Mandatory carpentry PPE: hard hat, safety footwear, eye protection for cutting and nailing, hearing protection above 85 dBA exposure, gloves for handling materials, and respiratory protection when cutting masonry or using solvent-based finishes.

Fall protection is required at heights of 1.8 m (6 ft) or more in general construction; guardrails, personal fall-arrest systems, and safe access ladders are the standard controls.

Scaffold inspection is done by a competent person before each work shift and after any alteration or strong wind; a scaffold tag records the inspection date and pass/fail status.

Portable circular saws must have a functioning lower blade guard and a riving knife where required; the blade is disconnected from power before any adjustment or blade change.

Housekeeping rules: no loose materials on walkways, scrap lumber de-nailed and stacked, and combustible waste removed daily; a clean site reduces slips, trips, and fire load.

Environmental compliance: segregate waste into biodegradable, recyclable, and residual or hazardous; used oil, paint cans, and solvent rags are hazardous waste and never poured into drains or soil.

Dust and silica control: wet cutting or dust extraction with respiratory protection when cutting concrete, brick, or tile; dry sweeping of fine dust is avoided in favor of vacuuming or wet methods.

Incident reporting: any injury, near miss, or property damage is reported to the supervisor immediately and recorded in the accident or incident log; a near miss is investigated like an accident.

Hand tools are inspected before use: hammer handles free of cracks and wedges tight, chisels sharp with intact hoops, saws with secure handles, and levels checked for accuracy by reversing the level on the same surface.

Power tools are matched to the task and rated voltage; extension cords are rated for the tool's current draw, checked for damaged insulation, and protected by a residual current device (RCD/GFCI).

Blades and bits are selected by material and tooth configuration: crosscut or combination teeth for general framing, fine-tooth blades for trim, and carbide-tipped teeth for engineered and abrasive materials.

Sharpening angles for common carpentry edges: plane irons and chisels typically 25 degrees primary bevel with a 30-degree micro-bevel; a sharp edge cuts with less force and is safer than a dull one.

Lumber is stacked on stickers (spacers) on level bearers, off the ground, under cover, and with the same species and grade together; plywood and boards are stored flat to prevent warping.

Cement is stored on pallets in a dry, ventilated area, used first-in first-out, and bags older than the manufacturer's shelf life are tested or rejected; moisture causes lumping and strength loss.

Lifting rule: keep the load close to the body, bend at the knees, keep the back straight, and get help or use mechanical aids for loads beyond a safe two-person lift; team lifting is coordinated by one signal caller.

Maintenance schedule: hand tools cleaned and oiled after use, power tool brushes and cords checked monthly, and defective tools tagged out of service and removed from the work area until repaired.

Fasteners and hardware are stored by size and type in labeled bins; mixing lengths causes wrong-length nailing and wasted material, and loose nails on the floor are a puncture hazard.

Drawing set order and purpose: architectural plans show layout and finishes, structural plans show framing and member sizes, electrical and plumbing plans show rough-in locations, and the specifications govern quality and materials.

Scale reading: the scale ratio is drawing distance to actual distance; a 1:50 detail means 1 mm on paper equals 50 mm on site, so a 20 mm line represents 1,000 mm actual.

Elevation datum and benchmarks: floor levels are referenced to a stated datum (for example, finished floor at 0.00), and all vertical dimensions are taken from that datum, not from the ground.

Grid lines and column references locate all work; a member's position is stated as grid-to-grid plus an offset, and dimensions are read from the dimension line nearest the feature.

Symbols and abbreviations: door and window tags (D1, W2), section and detail callouts, north arrow, and material hatching are cross-referenced to the schedule or legend before ordering materials.

Schedules govern quantities: door and window schedules give size, type, and hardware; the structural schedule gives member size, species or grade, and spacing for framing.

General notes outrank drawn dimensions only where the specification states so; the standard order of precedence is typically contract documents, specifications, then drawings, with the larger-scale drawing governing over the smaller.

A discrepancy between plans is resolved by a request for information (RFI) to the designer; work proceeds only on the written response, and the RFI number is recorded in the as-built file.

The 3-4-5 method squares a corner: measure 3 units along one line and 4 along the other; the diagonal between the points must be 5 units, and multiples (6-8-10, 9-12-15) work the same way.

A building rectangle is checked by equal diagonals: measure both diagonals corner to corner; equal diagonals confirm squareness, and unequal diagonals require adjusting the long side.

String lines and batter boards are set beyond the excavation line so the strings can be re-stretched after digging; the line is transferred to the footing with a plumb bob.

Level transfer uses a spirit level, water level, or laser level referenced to the established benchmark; a site benchmark is a fixed, protected point that is never moved without recording the new elevation.

Wall layout on a slab is marked from the grid or a fixed reference edge, with chalk lines snapped once and not re-snapped over a wrong line; offsets are measured perpendicular to the reference.

Stud layout is set at a standard spacing (400 mm or 600 mm centers, or 16 in or 24 in) measured from a common starting corner so that sheet goods break on stud centers.

Opening layout is set from the same reference as the studs; the rough opening is the finished opening plus the frame and shim allowance, and is checked against the door or window schedule.

Plumb and level checks are done before any permanent fixing: a post is plumb in two perpendicular directions, and a plate is level along its full length before nailing.

Formwork design considers the fresh concrete pressure, the weight of concrete plus formwork and construction loads, and the allowable deflection of the sheathing and supports.

Form panels are coated with a release agent before placing reinforcement; the agent is applied to clean forms and must not contaminate the reinforcement or construction joints.

Shoring and props are plumbed and braced in two directions, with base plates on firm bearing and heads bearing on solid members; props are not placed on backfilled or unconsolidated ground without a spreader.

Form ties and walers are spaced per the form design; overtightening crushes the sheathing and undertightening allows bulging and blowouts under pour pressure.

Camber is built into long-span beams and slabs to compensate for deflection; the specified camber is measured at midspan before the pour.

Form removal times depend on concrete strength, not on a fixed calendar: vertical forms for columns and walls are typically removed after the concrete can stand without damage, while soffit forms and props stay until the concrete reaches the specified stripping strength.

Props under beams and slabs are removed in a planned sequence, usually from midspan toward supports and from the least loaded to the most loaded areas, with reshoring where the design requires it.

After stripping, forms are cleaned, release agent reapplied, and damaged panels tagged for repair; formwork is stacked flat and supported to prevent warping.

Formwork tolerances: check alignment, plumbness, and dimensions against the drawings before and during the pour, because correction after concrete sets is costly.

Platform framing sequence: sill plate anchored to the foundation, floor joists with rim joists and blocking, subfloor, wall panels laid out and tilted up, then top plates and ceiling or roof framing.

Wall framing members: sole plate, top plates (double top plate for load distribution and lap at corners), studs at the specified spacing, headers over openings with jack and king studs, and cripple studs above and below openings.

Header sizing and support: a header spans the opening and bears on jack studs at each end; the bearing length and header size come from the structural plans, not from guesswork.

Roof framing members: ridge board or beam, common rafters, hip and valley rafters, jack rafters, ceiling joists, collar ties, and rafter ties; the ridge is supported by the rafters or by posts depending on the design.

Rafter length is found from the run and the pitch: unit rise per unit run gives the rafter length multiplier, and rafter length equals run times the multiplier for the given pitch.

Pitch is rise over run expressed as a ratio (for example 4:12 means 4 units rise per 12 units run), and the angle equals the arctangent of rise divided by run.

Bracing and lateral stability: let-in or diagonal bracing, sheathing, and blocking provide shear resistance; a wall is not stable until braced or sheathed, and temporary bracing stays until permanent bracing is complete.

Nailing schedule: common nailing is 16d for framing connections and 8d or 10d for sheathing, with edge distance and spacing per the plans; overdriven or missed nails are corrected before covering.

Framing checks before covering: stud spacing, plumb and straightness, header size and bearing, opening dimensions, and blocking for fixtures; the work is inspected and signed off before insulation and sheathing.

Joinery types: butt, lap, half-lap, mortise and tenon, dovetail, dowel, biscuit, and dado or rabbet; each is chosen for the load direction and appearance requirement.

A mortise and tenon joint transfers load through the tenon shoulders; the tenon thickness is typically one-third of the rail thickness, and the joint is glued and pinned where specified.

Dado and rabbet joints are used for shelving and cabinet carcasses; the dado depth is about one-third the board thickness, and the fit is snug but not forced.

Door and window installation: the frame is plumb, level, and square, shimmed at hinge and lock points, and checked by measuring diagonals; the gap around the door is even, and the swing and latch operate freely.

Trim and molding: baseboard, casing, and crown are cut with mitered or coped joints; inside corners are coped for a tight fit, and outside corners are mitered and glued or splined.

Wood movement: solid wood expands across the grain with moisture; panels are floated in grooves, and fasteners and gaps allow movement to prevent splitting and buckling.

Sanding sequence: start with a coarser grit and progress through finer grits (for example 80, 120, 180), sanding with the grain; finish is applied only after dust is removed.

Finish application: sealers and topcoats are applied in thin coats, with sanding between coats; solvent-based finishes need ventilation and respiratory protection.

Hardware installation: hinge and lock positions are marked from the door and frame, and pilot holes are drilled to prevent splitting; hardware is checked for smooth operation before handover.

Quality control is inspection at the source: check materials on delivery against the purchase order and specifications, check work at each stage, and record the result before covering up.

Hold points are stages where work cannot proceed without inspection and sign-off, such as before pouring concrete, before closing walls, and before applying finishes.

Tolerances for finished work: plumb and level within the specified allowance, straight edges checked with a level or straightedge, and dimensions checked against the drawings with a tape.

A punch list records defects found at inspection with location, description, and the responsible trade; each item is closed and verified, and the list is signed off before final acceptance.

As-built drawings record the actual installed conditions, including changes from the original plans, and are submitted with the completion documents.

Completion documents typically include the certificate of completion, as-built drawings, test and inspection reports, warranties, and the operation and maintenance manual.

Concrete strength acceptance is based on test specimens (cylinders or cores) tested per the specification; results below the specified strength trigger evaluation, not automatic rejection.

Material testing and sampling: samples are taken per the specification, labeled with location and date, and tested in an accredited laboratory; results are recorded and compared with the acceptance criteria.

Final inspection verifies that the work matches the approved plans, the punch list is closed, and the site is cleaned and turned over with keys, manuals, and warranties.

A carpenter's duty of care covers safety of self, co-workers, and the public; unsafe work is stopped and reported, and the stop-work authority is exercised without fear of reprisal.

Conflict of interest: a worker does not accept gifts, commissions, or side work that could influence decisions on materials, suppliers, or subcontractors; any potential conflict is disclosed in writing.

Confidentiality: client plans, pricing, and personal data are kept confidential and used only for the project; documents are returned or disposed of securely at project end.

Honest reporting: hours worked, materials used, and test results are reported accurately; falsifying records is fraud and grounds for dismissal and legal action.

Respect and non-discrimination: co-workers are treated with respect regardless of gender, age, religion, or ethnicity; harassment and bullying are reported through the established channel.

Substance and fitness for duty: no working under the influence of alcohol or drugs; impaired work with tools and at height endangers the whole crew.

Environmental and community responsibility: noise, dust, and traffic are controlled, public access is restricted around the site, and damage to third-party property is reported and compensated.

Continuous competence: only tasks within one's training and certification are performed, and unfamiliar work is done under supervision or referred to a qualified person.

Professional communication: commitments on schedule and quality are kept, delays are communicated early, and disputes are raised through the proper channel rather than through confrontation on site.