King CountyKing CountyWastewater Treatment DivisionWastewater Treatment Division

What you need What you need to know about WTD’s to know about WTD’s Technical StandardsTechnical Standards

This session will help This session will help you understand and use you understand and use WTD’s Technical StandardsWTD’s Technical Standards

We’ll answer your We’ll answer your questions as they arise.questions as they arise.

Welcome to WTD’s Welcome to WTD’s Technical Standards training! Technical Standards training!

What you’ll learn in this sessionWhat you’ll learn in this session

1.1. What WTD’s Technical What WTD’s Technical Standards are.Standards are.

2.2. Who uses WTD’sWho uses WTD’sTechnical Standards, Technical Standards, and why they use them.and why they use them.

3.3. How to request a How to request a variance from a WTD variance from a WTD Technical Standard.Technical Standard.

Key points to rememberKey points to remember

1.1. Using WTD Technical Standards is Using WTD Technical Standards is mandatorymandatory for all WTD personnel, for all WTD personnel, contractors, and consultants.contractors, and consultants.

2.2. Most WTD Technical Standards are Most WTD Technical Standards are available on our intranet.available on our intranet.

3.3. You must use the established You must use the established process to vary from a WTD process to vary from a WTD Technical Standard.Technical Standard.

Why use the WTD Why use the WTD Technical Standards?Technical Standards?

They help everyone work smarter…They help everyone work smarter…

Engineers, designers, technical staff, and Engineers, designers, technical staff, and procurement staff: procurement staff: equipment, details, and equipment, details, and techniques that are proven to work welltechniques that are proven to work well

O&M staff:O&M staff: Consistency across facilities to Consistency across facilities to improve safety and lower training costsimprove safety and lower training costs

Contractors, consultants, vendors:Contractors, consultants, vendors: Clear, Clear, well-established criteria to aim forwell-established criteria to aim for

When should you use the WTD When should you use the WTD Technical Standards?Technical Standards?

They’re They’re mandatorymandatory in all project phases: in all project phases:

Scope and criteria development Scope and criteria development

Design development and reviewDesign development and review

Procurement and construction Procurement and construction

Operations and maintenanceOperations and maintenance

Who creates the WTD Who creates the WTD Technical Standards? Technical Standards?

Everyone adds input to help create them:Everyone adds input to help create them:

O&MO&M

EngineeringEngineering

ConstructionConstruction

ConsultantsConsultants

OthersOthers

How does WTD create and revise How does WTD create and revise its Technical Standards?its Technical Standards?

Someone requests a new or revised Someone requests a new or revised standard, usually through their supervisorstandard, usually through their supervisor

Technical Standards Coordinator chooses Technical Standards Coordinator chooses Technical Standards Forum membersTechnical Standards Forum members

Forum creates a new standard, revises an Forum creates a new standard, revises an old one, or takes no actionold one, or takes no action

Technical Standards Coordinator conveys Technical Standards Coordinator conveys decision back to the requesterdecision back to the requester

How does WTD create and revise How does WTD create and revise its Technical Standards? (cont.)its Technical Standards? (cont.)

Established Established process:process:

How do you request a variance How do you request a variance from a WTD Technical Standard? from a WTD Technical Standard?

Discuss the issue with your supervisor or Discuss the issue with your supervisor or the project engineerthe project engineer

Use the proper form (available online)Use the proper form (available online)

Call or email your suggestion to the Call or email your suggestion to the Technical Standards CoordinatorTechnical Standards Coordinator

What Technical Standards does What Technical Standards does WTD create, control and maintain?WTD create, control and maintain?

1.1. Design StandardsDesign Standards

2.2. Standard Equipment Standard Equipment

3.3. Standard Installation DetailsStandard Installation Details

4.4. Guide Construction Guide Construction Specifications Specifications

1) Design Standards1) Design Standards

Instructions to engineers to encourage Instructions to engineers to encourage high-quality, consistent designhigh-quality, consistent design

Include two kinds of information: Include two kinds of information: Standard technologies: Standard technologies: Guidance on acceptable Guidance on acceptable

and unacceptable technologies in WTD projectsand unacceptable technologies in WTD projects Design criteria: Design criteria: Detailed specifications for design Detailed specifications for design

engineers to follow in WTD projectsengineers to follow in WTD projects

1) Design Standards (cont.)1) Design Standards (cont.)

Stored in spreadsheet format:Stored in spreadsheet format:

Division Specification Applicable to Facility Type

Subject Policy Statement

Architectural Roofing All Roof penetrations Roof penetrations for HVAC, plumbing and other shall be through an independent sleeve or opening. This is to separate the roofing from the ducting or pipe so that either can be replaced or repaired without impacting the function of the other. The roofing is to be sealed to the sleeve. The space between the sleeve should be minimal, but also needs to have some cover to prevent leakage down through the gap.

Civil Conveyance Forcemains Inspection 'tees' To make inspection possible, forcemains are required to have an inspection “Tee” spaced not greater than 2,000 feet intervals. The need is to allow sonic and camera inspection of the forcemain condition. The pressure Tee should have a riser of 24 inches and an insert constructed such that the flow line is maintained at the crown of the forcemain. The Tee is to be housed in a vault structure for access.

2) Standard Equipment2) Standard Equipment

Equipment that WTD selects for use in all Equipment that WTD selects for use in all projects and facilities because it’s proven projects and facilities because it’s proven reliable and easy to operate and maintainreliable and easy to operate and maintain

Simplifies O&M tasks, improves safety, Simplifies O&M tasks, improves safety, and reduces cost of training and spare-and reduces cost of training and spare-parts warehousingparts warehousing

Waiver is available for non-standard Waiver is available for non-standard equipment if compatibility is importantequipment if compatibility is important

2) Standard Equipment (cont.)2) Standard Equipment (cont.)

Examples:Examples:

480-Volt Variable Frequency Drives480-Volt Variable Frequency Drives

Programmable Logic ControllersProgrammable Logic Controllers

Low-Voltage SwitchgearLow-Voltage Switchgear

Medium-Voltage SwitchgearMedium-Voltage Switchgear

3) Standard Installation Details3) Standard Installation Details Drawings in engineering plans and Drawings in engineering plans and

contracts that show how to construct contracts that show how to construct common details in WTD facilities in common details in WTD facilities in customary, approved ways customary, approved ways

Organized by type of work: mechanical, Organized by type of work: mechanical, electrical, civil, I&C, etc.electrical, civil, I&C, etc.

May show sizing, fittings, spacings, May show sizing, fittings, spacings, structural details, etc. structural details, etc.

3) Standard Installation Details (cont.)3) Standard Installation Details (cont.)

Example:Example:

4) Guide Construction 4) Guide Construction SpecificationsSpecifications

Starting points for developing construction Starting points for developing construction specifications for WTD projects specifications for WTD projects

Sometimes called “technical specifications Sometimes called “technical specifications or “guide specifications” in contracts or “guide specifications” in contracts

We continually update them to comply with We continually update them to comply with code changes, address problems found on code changes, address problems found on projects, and reflect input from other projects, and reflect input from other agencies and technical publications agencies and technical publications

4) Guide Construction 4) Guide Construction Specifications (cont.)Specifications (cont.)

Example:Example:SECTION 02110SITE CLEARING

PART 1 GENERAL1.01 SUMMARYA. This Section specifies site clearing and grubbing.

1.02 REFERENCED SECTIONS A. The work of the following Sections is related to the work of this Section. Other Sections, not referenced below, may also be related to the proper performance of this work. It is the Contractor’s responsibility to perform all the work required by the Contract Documents.1. Section 01300: Submittals Procedure.2. Section 01195: Protection and Maintenance of Property and Work.

What other Technical Standards do What other Technical Standards do you need to understand and use?you need to understand and use?

Other WTD standards and forms:Other WTD standards and forms: WTD labeling, numbering, and CAD standardsWTD labeling, numbering, and CAD standards WTD project review checklists and comment formsWTD project review checklists and comment forms

Government and industry standards:Government and industry standards: State, country, and local building codes, the State, country, and local building codes, the

Washington state DOE “Orange Book”Washington state DOE “Orange Book” American National Standards Institute (ANSI), American National Standards Institute (ANSI),

Instrument Society of America (ISA), etc.Instrument Society of America (ISA), etc.

Quiz: What are the Quiz: What are the key points to remember?key points to remember?

1.1. Using WTD Technical Standards is Using WTD Technical Standards is mandatorymandatory for all WTD personnel, for all WTD personnel, contractors, and consultants.contractors, and consultants.

2.2. Most WTD Technical Standards are Most WTD Technical Standards are available on our intranet.available on our intranet.

3.3. You must use the established You must use the established process to vary from a WTD process to vary from a WTD Technical Standard.Technical Standard.