HKIS LSD APC Part I Written Assessment cheat sheet

Authorized Person (AP) under Buildings Ordinance must be a registered architect, engineer or surveyor; AP (Surveying) typically leads site formation, excavation and geotechnical works, and certifies survey-related submissions.

AP's statutory duties include supervising building works, ensuring compliance with approved plans and the Buildings Ordinance, and certifying completion; failure can lead to disciplinary action by the Registration Committee.

Ethical principles: act with integrity, objectivity, competence, confidentiality, and avoid conflicts of interest; disclose any potential conflict to clients and employers promptly.

Professional indemnity insurance is not mandatory by law but is commonly required by clients; APs should maintain adequate cover for negligence claims.

Continuing professional development (CPD) is required for registration renewal; HKIS and HKIE mandate minimum CPD hours per year.

When providing expert evidence, an AP owes a paramount duty to the court/tribunal, not the instructing party; opinions must be independent and based on facts within expertise.

Record-keeping: retain site diaries, survey records, and correspondence for at least 6 years (or longer for contracts) to defend against claims.

Whistleblowing: report unsafe or illegal practices to the relevant authority (e.g., Buildings Department) if internal resolution fails, while protecting confidentiality where possible.

Buildings Ordinance (Cap. 123) regulates building works, demolition, and site formation; AP/RSE/RC are statutory roles; non-compliance can lead to stop notices, closure orders, and prosecution.

Lands Ordinance (Cap. 28) governs land resumption, compensation, and related matters; the Lands Tribunal has jurisdiction over certain land disputes.

Town Planning Ordinance (Cap. 131) establishes the Town Planning Board and statutory plans; development must comply with zoning and plan notes.

Environmental Impact Assessment Ordinance (Cap. 499) requires designated projects to have an approved EIA report and environmental permit.

Land Survey Ordinance (Cap. 473) provides for the establishment of the Land Survey Authority and registration of land surveyors; it supports the cadastral survey and boundary determination.

Occupational Safety and Health Ordinance (Cap. 509) and Factories and Industrial Undertakings Ordinance (Cap. 59) impose general duties on employers and occupiers to ensure workplace safety.

Limitation Ordinance (Cap. 347): actions in tort (negligence) generally have a 6-year limitation period from the date of damage, or 3 years for personal injury; latent damage has special rules.

Independent Commission Against Corruption Ordinance (Cap. 204) prohibits offering or accepting advantages in connection with public or private sector business; APs must avoid corruption.

Boundary determination in Hong Kong relies on the Land Survey Ordinance and the cadastral survey; the Land Survey Authority maintains survey records and plans.

Boundaries of lots are defined by the lot boundaries shown on the approved survey plan and the description in the Crown lease or land grant.

Where a boundary is uncertain, the court may consider the original grant, plan, physical features, and evidence of possession; adverse possession can affect boundaries after statutory period.

The Land Survey Ordinance requires that boundary surveys be conducted by registered land surveyors and that survey records be deposited with the Land Survey Authority.

Boundary disputes may be resolved through negotiation, mediation, or litigation; the Lands Tribunal has jurisdiction over certain boundary disputes under the Lands Tribunal Ordinance (Cap. 17).

Survey accuracy standards: for cadastral surveys, the permissible misclosure is typically related to the scale of the plan; e.g., for 1:1000 scale, positional tolerance may be ±0.1 m.

When re-establishing lost boundary marks, surveyors should use the original survey record and coordinate system (Hong Kong 1980 Geodetic Datum) to reconstruct positions.

Professional reports on boundary disputes should include methodology, evidence, plans, and a clear opinion on the boundary location, avoiding speculative statements.

Hong Kong 1980 Geodetic Datum (HK80) is the official geodetic datum; coordinates are in Hong Kong 1980 Grid (HK80 Grid) with Transverse Mercator projection.

Control networks: primary horizontal control is realised through the Geodetic Survey Section's network of triangulation stations; vertical control uses the Hong Kong Principal Datum (HKPD).

GNSS static surveys require at least 4 satellites, good PDOP (<6), and observation sessions of sufficient length (e.g., 30 min for baselines <10 km) for mm-cm accuracy.

Deformation monitoring: use repeated precise levelling or total station measurements; apply rigorous adjustment and statistical tests (e.g., 95% confidence) to detect significant movement.

Monitoring networks should include stable reference points outside the zone of influence; check stability regularly with repeat measurements.

For engineering surveys, setting-out tolerances are often specified in contracts; typical tolerance for structural elements is ±5 mm to ±10 mm.

Least squares adjustment: compute residuals, a posteriori variance factor, and apply chi-square test to assess adjustment quality; blunders can be detected via data snooping.

Coordinate transformation between HK80 Grid and WGS84 requires a set of transformation parameters; use the official 7-parameter transformation provided by the Geodetic Survey Section.

Topographic maps at scales 1:1000, 1:5000, and 1:20000 are produced by the Survey and Mapping Office (SMO) of the Lands Department; they show relief, features, and infrastructure.

Cadastral maps (survey sheets) define lot boundaries and are based on the Land Survey Ordinance; they are used for land registration and boundary determination.

Digital mapping data is available in DWG/DXF and GIS formats; the Hong Kong 1980 Grid is the standard coordinate system.

Map accuracy standards: for 1:1000 topographic maps, horizontal accuracy is typically ±0.5 m and vertical accuracy ±0.5 m at 95% confidence.

Cadastral survey plans must show boundary dimensions, areas, and coordinates; they are deposited with the Land Survey Authority and are public records.

GIS data management: use metadata to document source, accuracy, and date; ensure data integrity through topology checks and regular updates.

When producing maps for engineering design, verify the currency of base maps and supplement with site survey to capture recent changes.

GIS data models: vector (points, lines, polygons) and raster; topology rules ensure spatial relationships (e.g., no gaps/overlaps in cadastral parcels).

Coordinate reference systems (CRS) must be correctly defined; in Hong Kong, use HK80 Grid (EPSG:2326) for local mapping.

Metadata standards: follow ISO 19115 for geospatial metadata; include title, source, accuracy, and processing steps.

Data quality: perform positional accuracy assessment using check points; attribute accuracy via field verification; completeness and logical consistency checks.

Database management: use versioning and backup; for survey data, maintain audit trails of edits and updates.

Data exchange formats: LandXML for survey and engineering data; shapefile/GeoJSON for GIS; DXF/DWG for CAD.

Security and privacy: comply with Personal Data (Privacy) Ordinance (Cap. 486) when handling personal data in GIS; restrict access to sensitive information.

Setting out: establish primary control points, then secondary control; use total station or GNSS RTK to mark design positions; always check with independent method.

Typical setting-out tolerances: for building elements, ±5 mm; for roads and drainage, ±10 mm to ±25 mm; refer to contract specification.

As-built surveys: measure completed works to verify compliance with design; produce as-built drawings and reports; compare with design and record deviations.

For verticality of structures, use plumb lines or total station; acceptable deviation often 1:500 of height.

Machine control and GPS guidance require calibration and verification; check against known points daily.

Records: maintain field books, raw data files, and calculation sheets; sign and date all records for traceability.

When deviations exceed tolerance, issue non-conformance report and recommend remedial measures; consult engineer for acceptance.

Land leases in Hong Kong specify user restrictions, building covenants, and development parameters; breach can lead to lease modification or enforcement action.

Lease modification: apply to Lands Department for modification; may involve premium payment and revised conditions; process includes valuation and legal documentation.

Land exchange: surrender old lot and grant new lot, often for consolidation; governed by Lands Ordinance and government policy; requires premium assessment.

Premium assessment considers land value, development potential, and infrastructure costs; use residual valuation method or comparison with recent transactions.

Land registration: Deeds Registration Ordinance (Cap. 128) provides for registration of instruments; title is not guaranteed, but registration gives priority.

Land resumption: government may resume land for public purposes under Lands Ordinance; compensation assessed at market value plus allowances.

Compliance with lease conditions is monitored by Lands Department; unauthorized building works or change of use can trigger enforcement.

Total station calibration: check collimation error, trunnion axis, vertical index, and EDM offset regularly; use certified baseline for distance calibration.

GNSS equipment: verify antenna height, check against known points, and perform factory calibration annually; monitor PDOP and satellite geometry.

Digital levels: calibrate with invar staff; check collimation error and compensator function; use for precise levelling to ±1 mm/km.

Accuracy standards: for cadastral surveys, positional uncertainty should not exceed 0.1 m at 95% confidence for urban areas; for engineering, follow project specification.

Quality assurance: implement ISO 9001 procedures; use checklists, independent checks, and peer review of calculations and plans.

Instrument maintenance: keep records of calibration, servicing, and repairs; ensure instruments are within calibration interval.

Field procedures: use redundant measurements; apply least squares adjustment; reject outliers using statistical tests.

Site supervision: AP/RSE must supervise building works; keep site diary, record instructions, weather, labor, and incidents; conduct regular inspections.

Safety: comply with Factories and Industrial Undertakings (Safety Management) Regulation; conduct risk assessments; provide PPE; report accidents to Labor Department.

Contract administration: administer under HKIA/HKIS standard forms; certify payments, assess variations, and determine extensions of time.

Professional liability: AP can be liable for negligence, breach of contract, and statutory offences; maintain professional indemnity insurance.

Record keeping: retain contract documents, correspondence, and site records for at least 6 years after completion; longer for latent defects.

Dispute resolution: use mediation, adjudication, or arbitration; Hong Kong has a robust arbitration framework under Arbitration Ordinance (Cap. 609).

When giving instructions, ensure they are within authority; avoid verbal instructions; confirm in writing.

Professional reports should be clear, concise, and structured: introduction, methodology, findings, analysis, conclusions, and recommendations.

Use objective language; distinguish between facts and opinions; support opinions with evidence and references.

Include limitations and assumptions; state qualifications of the author; sign and date the report.

For boundary dispute reports, present the survey evidence, legal principles, and a reasoned conclusion; avoid advocacy.

Use appendices for detailed data, plans, and photographs; ensure all figures are labeled and referenced in text.

Peer review: have reports reviewed by another qualified professional before issuing, especially for high-risk matters.

Confidentiality: do not disclose client information without consent; comply with Personal Data (Privacy) Ordinance.