Engineering Roadmaps

For more detailed step-by-step information for your project

BUILDING CONSENT STAGE

Step Infographic

Initial Site Visit

Document Exchange

STEP

1.1

Support by Architect,

Geotech engineer, other consultants if applicable

STEP

2.1

Client Collaboration and

Approval

RFI Stage

STEP

5.1

Meeting and scoping

with DTCE Team

STEP
0

Fee Proposal

STEP
1

STEP
2

Concept Design Stage

(Work-in-progress)

STEP
3

Building Consent Stage

(Work-in-progress)

STEP
4

Clients get documents suitable for Building Consent

Client Collaboration and

Approval

STEP

3.1 STEP
5

Building Consent Application Process

STEP
6

Building Consent Received

Support by Architect,

Geotech engineer, other consultants if applicable

STEP

1.2

Actions required

CLIENT

Explains the scope and details of the project, as well as the reason the work needs to be done
Engages an Architect, Geotech Engineer and other consultants if Applicable
Starts searching for a builder for the project, making sure the builder is a Licensed Building Practitioner and suitably qualified for the project.

Additional information can be found on the website: https://www.building.govt.nz/

DTCE

Consults with the client and architect to determine the engineering scope.

STEP
0

CLIENT

Provides up-to-date documentation including Drawings, Photos and other documents. This will be used by DTCE to produce documentation for the project.

DTCE

Initial site visit if allowed for in the scope to gather necessary information and to reconfirm the scope of the structural engineering.
Provides a site note with a summary of the site visit.

DTCE

Prepares and signs a Fee Proposal.

CLIENT

Provides access to the property.
Instructs DTCE members before access to the property.
Informs tenants (if applicable)

CLIENT

Countersigns a Fee Proposal approving the scope, fees and timing.

DTCE

Requests an additional documents and information related to the project.

STEP
1

STEP
1.1

STEP
1.2

DTCE

Develops concept design documents
Sends updates to the Client on a regular timeframe about the project.

CLIENT

Reviews the concept design documents.
Discuss the provided documents with other other consultants if applicable
Sends DTCE mark ups or clarification notes.

(if the initial scope and/or graphical documents have been changed, then a variation of DTCE Fees might be needed)

CLIENT

Answers questions from DTCE as they arise
Informs DTCE of any changes.

DTCE

Once design is close to completion, DTCE will share the developed documents with the client and architect for review
Discuss the provided documents with other consultants if applicable. (Architect, Geotech Engineer, etc.)

STEP
2

STEP
2.1

DTCE

Develops design documents (Suitable for Building Consent)
Sends updates to the Client on a regular timeframe about the project.

DTCE

Once design is close to completion, DTCE will share developed documents with the client for review.

CLIENT

Answers questions from DTCE as they arise
Informs DTCE any changes.

CLIENT

Reviews the Building Consent design documents
Discuss the provided documents with other consultants if applicable (Architect, Geotech Engineer, etc.)
Sends to DTCE mark ups or clarification notes.

(if the initial scope and/or graphical documents have been changed, then a variation of DTCE Fees might be needed)

STEP
3.1

STEP
3

DTCE

Provides the client with a full set of documents suitable for Building Consent Application.

Clients get documents suitable for Building Consent:

Calculation Bundle,
Design Report,
PS1
Drawing Set,
Construction monitoring recommendations.

CLIENT

Applies for Building Consent or engages an agent to do so.

DTCE

Responds to any possible Request For Information (RFI) from an external reviewer and the Building Consent Authority.

STEP
5

STEP
4

STEP
5.1

CLIENT

Receives Building Consent documentation from the Building Consent Authority.
Informs DTCE about receiving Building Consent and provides Service Record Number (SR) or Building Consent Number.
Keep the stamped drawings on site during construction.

STEP
6

INITIAL SEISMIC ASSESSMENT (ISA)

Step Infographic

Objectives of a Initial Seismic Assessment

The objective of an ISA is to identify any structural weaknesses that increase the life

safety risk to occupants and/or adversely affect neighbouring buildings and people. At the ISA stage, such deficiencies in the building are referred to as potential Critical

Structural Weaknesses. They may be classified as insignificant, significant or severe.

Document Exchange

STEP

1.1 STEP
1

Fee Proposal

Meeting and scoping

with DTCE Team

STEP
0

Initial Site Visit

(Recommended)

STEP
2

STEP
4

ISA Report

Structural Weaknesses
Current %NBS
Report limitations

STEP
3

Initial Evaluation Procedure (IEP)

Additional Information

STEP
4a

The Building is potentially earthquake prone, DSA is strongly recommended

STEP
5a

Option 1

DSA

STEP
5a

Option 2

Retrofit

STEP
4b

34%<%NBS<67%

The Building is potentially earthquake risk building

STEP
5b

Option 1

DSA

STEP
5b

Option 2

The Owner takes

the risk of the

Building

STEP
4c

%NBS ≥ 67%

The %NBS of the Building is above the earthquake risk threshold

STEP
5c

Option 1

DSA

STEP
5c

Option 2

The Owner makes

a commercial

decision

DSA

The Owner might decide to commission detailed seismic assessment

Retrofit

The owner might decide to retrofit the building straight away to current standards. *

DSA

The Owner might decide to commission detailed seismic assessment

Take Risks

The Owner might decide not to proceed with DSA and take responsibility of any Risks. * *

DSA

The Owner might decide to commission detailed seismic assessment

Take Risks

The owner might decide not to proceed with DSA and take responsibility of any Risks * *

%NBS ≤ 34%

*For more complicated buildings, proceeding immediately to a strengthening scheme without completing a DSA may be counterproductive unless there is significant prior knowledge of the building. A DSA is likely to be essential in such cases to gain a suitable understanding of the building and to identify any significant issues that need to be addressed.

** Usually, Banks and insurance companies require at least 67%NBS, Government tenants requires at least 80%NBS for tenancy.

Actions required

DTCE

Consults with the client to determine the engineering scope.

CLIENT

Explains the scope and details of the job, as well as the reason the work needs to be done.
Engages a Geotech Engineer, other consultants (If Applicable)

Additional information can be found on the website:

STEP
0

DTCE

Requests documents and information related to the project.

CLIENT

Provides up-to-date documentation including Drawings, Photos, other documents (if applicable). This will be used by DTCE to produce documentation for the project.

DTCE

Prepares and signs a Fee Proposal.

CLIENT

Countersigns a Fee Proposal approving job.

STEP
1

STEP
1.1

DTCE

Initial site visit to gather necessary information and to confirm scope of the project.
Provides a site note with all necessary information about the project.

CLIENT

Provides access to the property.
Instructs DTCE members before access to the property.
Informs tenants (if applicable).

STEP
2

CLIENT

Client might be asked to provided additional information if required.
Informs DTCE of any changes.

DTCE

DTCE Team works on IEP which is used as the basis for the ISA.

STEP
3

CLIENT

Reviews the report and prepares questions/mark ups/ notes to discuss with the DTCE Team.

DTCE

Prepares and issues IEP and ISA report for the client.

STEP
4

DTCE

Provides the client with a possible solution available for the client, based on IEP report.

CLIENT

Proceeds with a chosen option.

STEP
5

ISA/DSA KEY TERMS

Key terms

Results and reporting of Initial Seismic Assessment

An ISA typically refers to a %NBS value as the principal outcome or result. It should also detail an alpha rating and the relative risk, as shown in Table 1 below (which is taken from Table 2.1: Grading system for earthquake risk in

Section 2-13 of the NZSEE Guidelines).

Initial Seismic Assessments versus Detailed Seismic Assessments

The two broad types of seismic assessment are Initial Seismic Assessments and Detailed Seismic Assessments. However, it is important to appreciate that these lie on a continuum, as shown in Figure 1.

A DSA will generally need to be undertaken to provide more confidence about the significance of a potential Critical Structural Weakness and how this may govern the behaviour of a building in an earthquake.

The relationship between the levels of structural weaknesses is shown in Figure 2.

DETAILED SEISMIC ASSESSMENT (DSA)

Step Infographic

Objectives of a Detailed Seismic Assessment

The objectives of the DSA procedure set out in these guidelines are to:

Provide a procedure that allows different engineers carrying out assessments to consistently assess the level of earthquake shaking at which the ultimate capacity (seismic) is reached for an existing building and to identify the point at which the conditions are met for a significant life safety hazard.
Determine an earthquake rating for that building in terms of %NBS that is more reliable than the rating available from an ISA.
Provide details on the expected mode of failure to assist territorial authorities to make decisions on life safety issues to determine earthquake prone building status.
Determine whether or not a building is an earthquake risk building (ERB) as defined in these guidelines (i.e.<67%NBS)
Provide guidance on the likely needs for retrofit

Document Exchange

STEP

1.1 STEP
1

Fee Proposal

Meeting and scoping

with DTCE Team

STEP
0

Site Visit

(Required)

STEP
2

STEP
4

STEP
3

Detailed Seismic Assessment (DSA)

STEP
4a

The Building is potentially earthquake prone

%NBS ≤ 34%

STEP
5a

Option 1

Retrofit

STEP
4b

34%<%NBS<67%

The Building is potentially earthquake risk building

STEP
5b

STEP
4c

%NBS ≥ 67%

The state of the Building is above the earthquake risk threshold

STEP
5c

Option 2

The Owner makes

a commercial

decision

Retrofit

Take Risks

Retrofit

Take Risks

Owner must retrofit the building to at least 34%NBS of current standards.

Owner might decide to retrofit the building to current standards.

Owner might decide not to proceed with retrofit and take responsibility of any Risks. *

Option 1

Retrofit

Option 2

The Owner makes

a commercial

decision

Owner might decide to retrofit the building to current standards.

Owner might decide not to proceed with retrofit and take responsibility of any Risks. *

Detailed Seismic Assessment Report (DSA Report)

Option 1

Retrofit

* Usually, Banks and insurance companies require at least 67%NBS, Government tenants requires at least 80%NBS for tenancy.

Actions required

DTCE

Consults with the client to determine the engineering scope.

CLIENT

Engages a Geotech Engineer, other consultants (If Applicable)

Additional information can be found on the website:

click here

STEP
0

DTCE

Requests documents and information related to the project.

CLIENT

Provides up-to-date documentation including Drawings, Photos, other documents (if applicable). This will be used by DTCE to produce documentation for the project.

DTCE

Prepares and signs a Fee Proposal.

CLIENT

Countersigns a Fee Proposal approving job.

STEP
1

STEP
1.1

DTCE

Initial site visit to gather necessary information and to confirm scope of the project.
Provides a site note with all necessary information about the project.

CLIENT

Provides access to the property.
Instructs DTCE members before access to the property.
Informs tenants (if applicable).

STEP
2

CLIENT

Client might be asked to provided additional information if required.
Informs DTCE of any changes.

DTCE

DTCE works on DSA report.

STEP
3

CLIENT

Reviews the report and prepares questions/mark ups/ notes to discuss with the DTCE Team.

DTCE

Prepares and Present DSA report for the client.

STEP
4

DTCE

Provides the client with a possible solution available for the client, based on DSA report.

CLIENT

Proceeds with a chosen option.

STEP
5

DSA/ISA KEY TERMS

Key terms

Results and reporting of Initial Seismic Assessment

Section 2-13 of the NZSEE Guidelines).

Initial Seismic Assessments versus Detailed Seismic Assessments

The two broad types of seismic assessment are Initial Seismic Assessments and Detailed Seismic Assessments. However, it is important to appreciate that these lie on a continuum, as shown in Figure 1.

A DSA will generally need to be undertaken to provide more confidence about the

significance of a potential Critical Structural Weakness and how this may govern the behaviour of a building in an earthquake.

The relationship between the levels of structural weaknesses is shown in Figure 2.

CONSTRUCTION MONITORING STAGE

Step Infographic

STEP
7

Pre-Construction Phase

STEP
8

Construction

Process Starts

Producer Statement 3 (PS3)

Construction

STEP

9.1 STEP
9

Construction Process (Work on Remarks)

DTCE Site Visits

STEP

8.1

Producer Statement 4 (PS4)

Construction

Review

STEP

9.2 STEP
10

Code of Compliance

Certificate Application

STEP
11

Code of Compliance

Certificate

RFI Stage

STEP

10.1

Actions required

DTCE

DTCE is usually not involved with this phase unless we are formally engaged to assist with the tendering process.

CLIENT

Engages a builder for the project (from step 0), making sure the builder is a Licensed Building Practitioner (LBP) and is suitably qualified.

Additional information can be found on the website: https://www.lbp.govt.nz/

STEP
7

DTCE

Discuss with the client and the builder Construction monitoring recommendations (See step 4) to monitor vital phases of the construction cycle and provide consultancy services during construction.

CLIENT

Approves and notifies the builder about the responsibility of inviting DTCE to the site at specific milestones mentioned in the Construction monitoring recommendations.

STEP
8

DTCE

Make themselves available to go to the site when the builder requests (with reasonable notice e.g. 24 hours)
Issues site reports to the client and builder which may include directions for anything that needs resolving.

CLIENT

Issues the builder follows the DTCE notes and Construction monitoring recommendations
Reviews and approves variations

BUILDER

Is responsible to contact DTCE to monitor construction at appropriate time according to Construction monitoring recommendations.

STEP
8.1

BUILDER

PS3

The builder issues a PS3 Sixth Schedule to DTCE and Client.

CLIENT

Insures the builder follows the DTCE notes and the Construction monitoring recommendations

CLIENT

Pays all issued invoices by DTCE, before DTCE issues PS4.

DTCE

Confirms that the DTCE designed structure is built in accordance with the consented documents and that all issues have been resolved by the builder.

DTCE

PS4

DTCE issues an invoice for final construction monitoring and preparing and issuing the Producer statement (PS4) based on the resolved notes and PS3 from the builder.
When DTCE has received payment for all issued invoices they will issue the PS4 to the client.

STEP
9

STEP
9.1

STEP
9.2

CLIENT

Insures all possible Request for Information (RFI) from the Building Consent Authority have been resolved by the builder.

DTCE

Submits the PS4 documents to the Building Consent Authority with the application form for a Code Compliance Certificate.

STEP
10

STEP
10.1

CLIENT

Code Compliance Certificate received
Celebrates the building code compliance completion of their project.

STEP
11

Anchor 2

Engineering Roadmaps

For more detailed step-by-step information for your project

BUILDING CONSENT STAGE

STEP

1.1

STEP

2.1

STEP

5.1

STEP 0

STEP 1

STEP 2

STEP 3

STEP 4

STEP

3.1

STEP 5

STEP 6

STEP

1.2

Actions required

STEP 0

STEP 1

STEP 1.1

STEP 1.2

STEP 2

STEP 2.1

STEP 3.1

STEP 3

STEP 5

STEP 4

STEP 5.1

STEP 6

STEP
0

STEP
1

STEP
2

STEP
3

STEP
4

STEP
5

STEP
6

STEP
0

STEP
1

STEP
1.1

STEP
1.2

STEP
2

STEP
2.1

STEP
3.1

STEP
3

STEP
5

STEP
4

STEP
5.1

STEP
6