Technical Capabilities
Project-Specific Engineering Standards & Technical Requirements
How the requirements that govern each package are identified, applied and checked, and who is responsible for what.
Working Within Your Project's Engineering Standards
Projects apply different design codes, material and welding specifications, reinforcement detailing requirements, owner standards, EPC procedures and drawing conventions. We approach each package by identifying the requirements that apply to it, not by limiting work to a fixed list of published codes.
At the start of an assignment, the client-supplied design basis, project specifications, applicable editions, documentation procedures and interface requirements are reviewed for relevance to the drawings, models and schedules being produced. Technical queries are raised where source information or responsibilities are unclear. Where design calculations, independent engineering verification or professional approval are needed, those remain separately defined activities undertaken only by appropriately authorised personnel.
Standards Organised by Requirement
The families of requirements a project typically defines, and what the team reviews for its assigned scope.
Structural Design Basis
Typical project documents
Approved calculations and drawings, design criteria, design codes and the connection basis.
What we review
References to the approved engineering information; design authority and changes remain as defined.
Structural Fabrication and Erection
Typical project documents
Steelwork tolerances, shop practice, welding and bolting specifications and part marking.
What we review
Details and schedules consistent with the supplied requirements.
Concrete and Reinforcement
Typical project documents
Approved concrete design, cover, lap and bar details, and bending and scheduling rules.
What we review
Concrete detail drawings and BBS in the project-required conventions.
Offshore and Plant Technical Standards
Typical project documents
Owner- and asset-specific structural, material, interface and documentation requirements.
What we review
Scope-specific drawing and model constraints and interface references.
Information and Document Management
Typical project documents
Drawing numbering, title blocks, model exchange, file naming, reviews and issue status.
What we review
Registers, file outputs, model coordinates and revision and transmittal format.
Quality and Approval Procedures
Typical project documents
Document checking, review hold points, RFIs and technical queries, and approvals.
What we review
Internal production-review obligations and the named final approval authority.
Project specifications may reference AISC, ACI, AWS, ISO, British Standards, Eurocodes and asset-owner or EPC standards, among other applicable frameworks. This list is illustrative, not exhaustive; applicability and the required edition are defined by each project.
Show example references and how they are used
Client / EPC / asset owner
Project specifications
Client, EPC and Owner Standards and Project Specifications
Drafting and modelling standards, title blocks, numbering, material specifications and file formats for the specific project.
- Responsibility
- Client / project engineering team
- Relevant services
- All services
Usually override or supplement general standards within the contract hierarchy agreed for the project.
- Publisher(opens in a new tab)
AISC
AISC 303
Code of Standard Practice for Steel Buildings and Bridges
Structural steel detailing, fabrication and erection practice, including the exchange of design and detailing information.
- Responsibility
- Contract parties as defined in the project; design by the engineer of record
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Working to AISC 303 does not imply AISC certification.
AISC
AISC 360
Specification for Structural Steel Buildings
Steel design framework referenced by the responsible designer; relevant to how design information is presented on drawings.
- Responsibility
- Responsible structural designer
Design requirements are set by a qualified design authority; detailing does not perform or approve design.
- Publisher(opens in a new tab)
AWS
AWS D1.1
Structural Welding Code — Steel
Weld symbols and weld-related information shown on steel shop drawings, as specified by the design.
- Responsibility
- Responsible designer and fabricator
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Weld notation on drawings is not a welding service or welding certification.
RCSC
RCSC Specification
Specification for Structural Joints Using High-Strength Bolts
Bolt types, joint designations and bolt lists on steel connection details.
- Responsibility
- Responsible designer
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Followed as specified in the approved design and contract edition.
ACI
ACI 318
Building Code Requirements for Structural Concrete
Concrete design framework referenced by the responsible designer; governs cover, laps and anchorage shown on detailing.
- Responsibility
- Responsible structural designer
Reinforcement is detailed from approved design requirements; detailing is not concrete design approval.
ACI
ACI 315 family
Guidance on Detailing Concrete Reinforcement
Presentation of reinforcement drawings, bar marks and placing information.
- Responsibility
- Detailer, to the project-specified reference
- Relevant services
- Reinforced Concrete & Rebar Detailing
Applicable document and edition confirmed per project.
BSI
BS 8666
Scheduling, Dimensioning, Cutting and Bending of Steel Reinforcement
Bar shape codes and bar bending schedules where the contract specifies British practice.
- Responsibility
- Detailer, to the project-specified edition
Exact edition and adoption confirmed for each project.
CEN
Eurocodes
Eurocodes with the Applicable National Annex
Steel and concrete design basis on projects that adopt European standards.
- Responsibility
- Responsible structural designer
Not mixed with incompatible design bases; the project design basis governs.
CEN / BSI
EN 1090-2 (BS EN 1090-2 in the UK)
Execution of Steel Structures: Technical Requirements
Fabrication and erection requirements by execution class (EXC1 to EXC4), which the designer states in the execution specification.
- Responsibility
- Designer (execution class and specification); fabricator (execution and CE/UKCA marking)
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
The detailer works to the stated execution class; it does not select it or certify conformity.
BCSA
NSSS
National Structural Steelwork Specification for Building Construction
UK building steelwork specification commonly adopted as the execution specification alongside BS EN 1090-2.
- Responsibility
- Specifier and steelwork contractor, as set in the contract
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Applies only where the contract adopts it; edition confirmed per project.
Standards Norway
NORSOK M-101
Structural Steel Fabrication
Fabrication requirements on North Sea offshore and some onshore energy projects where the operator specifies NORSOK.
- Responsibility
- Fabricator and responsible offshore structural designer
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Relevant only where the operator or contract specifies it.
Standards Australia
AS 4100
Steel Structures
Steel design basis on Australian projects; member sizes and connection requirements come from the designer working to it.
- Responsibility
- Responsible structural designer
Design to AS 4100 stays with the designer; detailing presents the approved design.
Standards Australia / Standards New Zealand
AS/NZS 5131
Structural Steelwork: Fabrication and Erection
Fabrication and erection requirements by construction category (CC1 to CC4), stated by the designer.
- Responsibility
- Designer (construction category); fabricator and erector (compliance)
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
The detailer works to the stated construction category; it does not select it or certify compliance.
Standards Australia
AS 3600
Concrete Structures
Concrete design basis on Australian projects, including the cover and reinforcement requirements shown on placing drawings.
- Responsibility
- Responsible structural designer
- Relevant services
- Reinforced Concrete & Rebar Detailing
Reinforcement design stays with the designer; detailing presents it buildably.
ISO
ISO 19902
Fixed Steel Offshore Structures
Offshore structural packages where the contract designates this standard.
- Responsibility
- Responsible offshore structural designer
Relevant only where the contract applies it; no offshore structural analysis is implied.
ISO
ISO 19901-3
Topsides Structure
Offshore topsides structural requirements where specified.
- Responsibility
- Responsible offshore structural designer
- Relevant services
- Structural Steel Detailing & Fabrication Documentation
Exact contract edition and discipline scope confirmed per project.
ISO
ISO 19650 series
Information Management Using Building Information Modelling
Model information exchange and naming where a project adopts it.
- Responsibility
- Project information manager / client
- Relevant services
- 3D Structural Modelling & Plant Model Support
Working within an ISO 19650 process does not confer BIM certification.
ISO
ISO 9001
Quality Management Systems
Organisational quality-management framework some clients reference in their supplier requirements.
- Responsibility
- Certifying body (where a certificate is held)
- Relevant services
- Organisational only
PetroHill does not claim ISO 9001 certification.
Practical Technical Requirements Workflow
Requirements are only useful if their applicability is clear. We identify the codes and specifications relevant to the assigned deliverables, confirm conventions and responsibility limits, capture technical queries and submit revision-controlled outputs for the agreed client review. A drawing check is never a substitute for engineering analysis or statutory certification.
- 01
Scope and Inputs
Client scope and approved engineering inputs received.
- 02
Identify Requirements
Applicable standards, editions and client specifications identified.
- 03
Rules and Responsibilities
Drawing and model rules, interfaces and responsibility matrix defined.
- 04
Clarifications
Unclear inputs recorded and technical clarifications obtained.
- 05
Production
Agreed drawings, models and schedules produced.
- 06
Checks and Review
Scope-based checks; authorised comments loop back to clarification.
- 07
Handover
Accepted as contracted; final agreed handover.
Responsibility Matrix
Typical responsibilities, always subject to the project contract.
| Activity | Typical responsibility |
|---|---|
| Design basis, structural calculations and member sizing | Client's engineer or appointed design authority, unless a qualified design scope is separately assigned |
| Approved connection design or delegated connection engineering | Responsible engineer or a contractually appointed qualified designer |
| Drafting, detailing and model production | PetroHill, within the agreed production scope |
| Project-specific drawing and model consistency checks | Assigned production checker under the agreed procedure |
| Technical queries and resolution of missing data | Clarified by the named engineering or client authorities |
| Client review, acceptance and statutory approval | Assigned client, engineer or authority according to the project contract |
| Final record and as-built verification | Responsible field, survey or construction authority supplying verified records; PetroHill documents the agreed updates |
Agreed for Each Package
The information typically agreed with the client before production starts, so both teams work to the same basis. The exact record is defined in the scope of work.
Quality & Delivery- Scope and Discipline
- Applicable Standards and Specifications
- Edition Specified by the Contract
- Client-Specific Departures
- Reference Drawing and Specification Revisions
- Who Supplies and Approves the Design
- Checker Responsibility
- Clarifications and the Agreed Document Hierarchy
Common Questions
How project standards, codes and approvals relate to drafting, modelling and detailing work.
Can you work to our company standards instead of a particular international code?
The applicable client and owner engineering standards, project specifications, drawing procedures and approved design criteria are evaluated at scope review. We confirm whether current personnel and software can meet the requested package before accepting it.
Are you restricted to the codes mentioned on this website?
No. No exhaustive list is intended. Applicability and deliverable responsibilities are determined by the contract and confirmed during review.
Does a code-based drawing mean you certify the structural design?
No. A drawing or model prepared to approved project documentation requirements is distinct from independently checking or approving calculations and structural adequacy.
How are conflicts between owner specifications and published codes handled?
The conflict is recorded as a technical query and an authorised project decision is obtained. We do not impose a universal hierarchy; contractual documents and the applicable law control it.
Working to a specificcode or client specification?
Tell us which standards, specifications and editions apply to your package. Applicability and responsibilities are confirmed in the scope of work before production starts.
