Fillable Mechanical Permit Checklist Yes Land use review required (City of Bellevue)

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Mechanical Permit Checklist Yes Land use review required (City of Bellevue)

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June 15, 2021 City of Bellevue | Development Services 1
Mechanical Permit
Checklist
1. Is any equipment located on the exterior or vented to the exterior of a building (examples:
rooftop or wall-mounted equipment, generators, HVAC equipment, exterior louvers, vents or
exhaust terminals)?
□ Yes – Land use review required
see Land Use Requirements for Mechanical Permits (attached)
□ No
2. Does the work include installation or modification of a fume hood, lab, chemical storage, paint
spray booth, fuel tank or kiln?
□ Yes – Fire review required
□ No
3. Does the work include installation of a diesel or propane generator?
□ Yes – Land Use review and Fire review required
□ No
4. Does the work include installation of uninterrupted power source (UPS) equipment (examples:
battery storage and recharging facility)?
□ Yes – 50 gallons or more of electrolyte – Fire review required
□ Yes – less than 50 gallons of electrolyte
□ No
5. Is any equipment over 400 pounds?
See Interpretations & Procedures - Seismic Bracing (attached)
□ Yes - Provide structural information.
□ Equipment is mounted at grade.
□ Equipment is suspended from the structure.
□ New equipment is a replacement unit in the same location, with the weight not
exceeding 5% of the original.
□ No
6. Does the work include the installation or modification of a Type I or Type II kitchen hood?
□ Yes – Submit Type I and Type II Kitchen Hood Submittal Checklist
□ No
7. Are structural or fire rated improvements needed for the mechanical installation (shafts, walls,
exterior screening, rafters, beams, etc.)?
□ Yes - A separate building permit is required
□ No
June 15, 2021 City of Bellevue | Development Services 2
8. Does the work include the installation of a walk-in cooler or walk-in freezer?
□ No
□ Yes (check all that apply)
□ Unit is pre-fabricated.
□ Unit is custom built or built-on-site. (A separate building permit is required)
□ Unit is to be installed on anything other than a slab-on-grade. (Structural information
may be required)
□ Unit is to be installed outside the building perimeter. (A separate building permit is
required)
NOTE:
For roof-mounted mechanical equipment, provide architectural elevation views to verify that new
or existing screening follows the Land Use Code.
Mechanical units are not allowed in side-yard setbacks in residential districts or properties
adjacent to residential districts.
Separate permits are required for fire alarm, fire sprinkler, structural building improvements,
electrical, smoke control and plumbing if that work is being done as part of your project. Refer to
Building Code Requirements for Mechanical Installations (attached) for coordination of structural
and mechanical permits.
If a fuel-fired boiler greater than 200 MBH is going to be installed, a separate permit is required
from the Washington State Department of Labor and Industries (L & I) Boiler Division. Contact
Labor and Industries at Boiler@lni.wa.gov or 360-902-6400.
For questions regarding the checklist, contact the following Development Services staff:
Items 1 & 3 on the checklist
Land Use Review
425-452-4188
Items 5, 7 & 8 on the checklist
Building Review prescreening
425-452-4121
Items 2, 3 & 4 on the Checklist
Fire Review
425-452-4122
Building permit application and other
submittal documents
Permit Processing
425-452-4898
June 15, 2021 City of Bellevue | Development Services 3
Building Code Requirements for Mechanical Installations
When is a separate building permit required?
Many mechanical HVAC installations involve the need to make structural improvements to the
building or structure where new HVAC equipment will be installed. A separate building permit is
typically needed for structural improvements to allow for review and inspection of those
improvements. Some examples of typical structural improvements done as part of an HVAC
installation include:
• Modifications to an existing roof or elevated floor to carry the weight of new equipment.
• Installation of screening as required by the Land Use ordinance.
• Connection of wall-mounted installations to an existing building.
Building plans and structural calculations are required in most cases to justify existing and/or new
construction related to gravity or lateral support of new HVAC equipment. If structural calculations
are required by the City of Bellevue, the calculations, details and drawings must be stamped and
signed by an engineer licensed in the state of Washington. Review Table A (attached) to determine
when lateral engineering is required for your project.
Structural improvements not listed here require a separate building permit. If a separate building
permit has already been submitted for review or has been issued, it is not necessary to provide
the same information with the mechanical permit application. New HVAC equipment should not
be installed on elevated roofs or decks until necessary structural improvements have been
completed and approved by the building inspector.
If screening for exterior equipment is required per the Land Use ordinance, provide lateral and
gravity calculations for review. For projects requiring installation of shafts, plans and details
showing the location and support of vertical and/or horizontal shafts must be provided. In many
cases, shafts must be fire resistance-rated; assembly listing numbers and assembly details must
be provided for review.
The installation of a walk-in cooler or walk-in freezer that is custom built, built on site or installed
outside the building perimeter will require a separate building permit. If the unit is installed on
anything other than a slab-on-grade, structural information is required to verify that the floor
system is sufficient.
June 15, 2021 City of Bellevue | Development Services 4
When is a separate building permit not required?
The following items are considered ancillary to the mechanical work, do not require a building
permit, and may be reviewed as part of the mechanical permit:
• Seismic connections to prevent overturning of equipment during an earthquake.
• Creating an opening in an existing roof and installation of a curb to support new rooftop
equipment.
• Blocking and/or brackets to support ductwork.
• Review of an existing roof or elevated floor assembly for new gravity loads when no
structural improvements are needed. This review is necessary to confirm that an existing
roof deck, floor framing or platform is adequate to support the new or replacement
installation.
• Engineering for gravity is not required for rooftop equipment if the new unit will be in the
same location and the weight does not exceed 5 percent more than the original
equipment.
June 15, 2021 City of Bellevue | Development Services 5
Land Use Requirements for Mechanical Permits
If the equipment to be installed or replaced is located in any of the following locations, please read
the following applicable submittal requirements.
Interior Equipment
For proposal sites located in a Design Review District with ancillary equipment mounted on the
building’s exterior walls (vents, etc.), the permit submittal requirements shall include building
elevation drawings showing all ancillary elements on the exterior walls. The drawings must be to
scale. The location/design of these elements shall be architecturally compatible with the building
exterior design. The equipment’s location and function shall not result in adverse impacts to the
pedestrian environment.
Rooftop Equipment
Visual screening is required for all new/replacement rooftop mechanical equipment. The
existing/proposed equipment visual screening must be accurately portrayed in a rooftop drawing.
Equipment must be consolidated to the maximum extent reasonable. Section-view drawings are
required to show the relationship between the height of the equipment and proposed screening.
Screening shall be a solid, nonreflective visual barrier that is architecturally compatible with the
building exterior and explained with architectural details. Any rooftop mechanical equipment
installation that can be seen from the surrounding properties shall be screened from above and
all sides.
At-Grade Equipment
All at-grade mechanical equipment must be visually screened in a manner that balances security
or maintenance objectives and considers the site and building context. Refer to the Noise Control
Code for maximum permitted noise level.
Residential Installations
All at-grade mechanical equipment installations for single family residential properties must be
located in the rear yard and no closer than five feet to the site’s boundary, or in a side yard and
outside the required structure setback. Refer to the Noise Control Code for maximum permitted
noise level.
June 9, 2020 City of Bellevue | Development Services 1
Seismic Bracing System
Components – MEP,
Sprinkler, Fire Alarm, Smoke Control
Building Division Interpretations and Procedures
Index Number:
IBC-2017-008
Issue Date:
06-09-2020
Code:
2015 IBC & ASCE 7-10
Section:
IBC 1613 & ASCE Ch. 13
1. Components with I
p
= 1.0: The attached Table A specifies the City of Bellevue-approved
seismic
bracing requirements. [Importance factor I
p
as defined in ASCE7-10 Section 13.1.3]
2. Components with I
p
> 1.0: All projects with I
p
> 1.0 require an engineered design of seismic
bracing systems for all mechanical (M), electrical (E), plumbing (P), sprinkler (S)
j
, fire alarm (FA),
and smoke control (SC) system components when the system component has been assigned
an I
p
of 1.5. The component I
p
, shall be taken as 1.5 if any of the following conditions apply.
a. The component is required to function for life-safety purposes after an earthquake,
including fire protection sprinkler systems.
b. The component contains hazardous materials.
c. The component is in or attached to an Occupancy Category IV structure and it is needed for
continued operation of the facility or where its failure could impair the continued operation
of the facility.
3. See WABO/SEAW White Paper 7-2011 for additional guidelines and recommendations.
June 9, 2020 City of Bellevue | Development Services 2
Table A
Guidelines for System Component Seismic Bracing where I
p
= 1.0
Equipment ≤ 75#
75# < Equip ≤ 400#
Equip > 400#
h
Mechanical Ductwork
N/A
N/A
N/A
Gas and Hydronic Piping
N/A
N/A
N/A
M, E, P, equip mounted
≤ 4’ above the floor/roof &
mounted with flexible
connections
a,b,c
No Requirement
No Requirement
Engineering for
gravity and lateral
support
d,e,g
(plan
review required)
M, E, P, equip mounted >
4’ above the floor/roof
a,c
No Requirement
Engineering for
gravity and lateral
support
d,e,g
(field approve)
Engineering for
gravity and lateral
support
d,e,g
(plan
review required)
M, E, P equip mounted
with flexible
connections
b,c
N/A
N/A
N/A
M, E, P equip mounted
from a wall or suspended
from structure
f
N/A
Engineering for
gravity and lateral
support (field
approve)
Engineering for
gravity and lateral
support (plan review
required)
Plumbing Piping (drain,
waste, & vent)
N/A
N/A
N/A
a.
4‘ dimension measured from the floor to the mounting point location
b.
Mechanical, electrical and plumbing components with flexible
connections installed between the components and associated
ductwork, piping, and conduit. Non-Flexible connections will require
plan review.
c.
Water tank restraints required per UPC Section 507.2
d.
Engineering for gravity not required when mounted at grade
e.
Engineering for lateral not required when the height/width ratio is
≤ 1.0 (In all horizontal directions)
f.
Engineering shall address the bracing system, the point(s) of
attachment and the capacity of the building element or structure
supporting the attachment and bracing system.
g.
Rooftop equipment: Change out weight like for like, no engineering
required. New units with weight exceeding 5% of original, engineering
required for gravity (IEBC Section 402.3)
h.
Water heaters ≤ 60 gallons will fall under this category
i.
SMACNA Restraint Manual "Guidelines for Mechanical Systems": 3rd Ed,
2008, 2015 Uniform Plumbing Code Table 313.3 and 313.6
j.
Seismic bracing for fire protection sprinkler systems in seismic design
category D-F designed per NFPA 13 as specified in ASCE 7-10 Section 13
6 8.2
For questions concerning required permits, contact Development Services (425-452-4121)
between 8 a.m. and 4 p.m., Monday through Friday (Wednesday, 10 to 4).
Signature Date:
Gregg Schrader, PE, SE, Building Official
□ Attachments Supersedes:
Gregg Schrader
06/09/2020
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Completed 31 March 2022

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