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POL Government Elected Officials Auditor Griffin-Valade Charter, Code & Policies City Code & Charter Online Code & Charter Title 28 Floating Structu Chapter 28.06  New Construction
28.06.055 Life Safety.

 

(Added by Ordinance No. 181437, effective December 21, 2007.)

 

A.  One and Two Family floating homes.  Floating homes, tender houses, combo-structures and boathouses shall be constructed and maintained in compliance with the requirements of the State Residential Specialty Code, and Title 24, Title 28, and Title 29.

1. Foundation systems.  Foundation systems as specified in State Residential Specialty Code are not applicable to the construction of floating homes.  Floating Homes shall be supported on floatation systems designed in accordance with provisions specified in Section 28.06.030 and Section 28.06.040.  Floating homes shall be securely anchored to the float on which they are constructed using an engineered connection system designed to prevent the home from being dislodged or overturned.

 

2. Framing. Framing lumber shall comply with the requirements of Section 28.06.020 A.

 

3. Allowable alternatives.  Recognizing the unique history and traditions associated with floating homes the following alternatives to the requirements specified in the Residential Specialty Code are allowed without appeal:

a. Exterior wall and opening protection shall be as described in Section 28.06.050 based on the separation between structures in a moorage.

 

b. Sleeping Loft.  In a floating home or combo-structure and within individual dwelling units in a floating structure containing three or more dwelling units, a sleeping loft or accessory living area such as a den, office, hobby room or similar area which is not more than 250 square feet in area that is located above the level of the main floor of a floating home may use the following standards:

(1)  Access to the loft space may be by a "ship's ladder" type of stair having a rise not to exceed 12 inches and a run of not less than 6 inches or an alternating tread device as specified in the Structural Specialty Code.  Width of stairs or alternating tread device shall be a minimum of 30 inches.  Handrails shall be provided at both sides of stair or alternating tread device. Headroom at stair or alternating tread device shall be not less than 6 feet 6 inches at any point.

 

(2)  A loft space need not be provided with exterior openings for natural light, ventilation or emergency escape and rescue provided the loft area is open and unobstructed to the floor below, except for columns and posts and railings not more than 42 inches high, and the floor below onto which the loft opens has exterior openings equal to the total required for the floor area served and the loft.

c.   Porthole assemblies, whether new or salvaged, may be installed in a floating home to enhance the nautical character of the structure. Such assemblies need not comply with the energy conservation requirements of the specialty code provided the total area of all such assemblies installed does not constitute more than two percent (2%) of the total exterior wall area of the floating home.  Such assemblies may be used to meet the required area for natural light and, if openable, to satisfy the required natural ventilation.  Such assemblies may not be used to satisfy the required emergency escape and rescue requirements from sleeping areas.

B.  Floating structures for use and occupancy as other than floating homes, combo-structures, boathouses or tender houses accessory to a floating home shall be constructed and maintained in compliance with the requirements of the Structural Specialty Code and Title 24, Title 28, and Title 29.

1.  Foundation systems.  Foundation systems as specified in the Structural Specialty Code are not applicable to the construction of floating structures. Floating structures shall be supported on floatation systems designed in accordance with provisions specified in Section 28.06.030 and Section 28.06.040.  Floating structures shall be securely anchored to the float on which they are constructed using an engineered connection system designed to prevent the structure from being dislodged or overturned.

 

2.  Framing.  Framing lumber shall comply with the requirements of Section 28.06.020 A.

 

3.  Allowable alternatives.  Recognizing the unique history and traditions associated with floating structures the following alternatives to the requirements specified in the Structural Specialty Code are allowed outright without appeal.

a.  Exterior wall and opening protection shall be as described in Section 28.06.050 based on the separation between structures in a moorage.

 

b.  A loft, mezzanine or accessory area such as a private office, employee work room or similar area which is not more than 250 square feet in area, that is accessible to employees only and that is located above the level of the main floor of a floating structure may use the following standards:

EXCEPTION:  Loft spaces within individual dwelling units in floating structures containing three or more dwelling units shall be permitted to comply with the provisions of Section 28.06.055 A.3.b.

(1)  Access to the loft space shall be permitted to be a "ship's ladder" type of stair having a rise not to exceed 12 inches and a run of not less than 6 inches or an alternating tread device as specified in the Structural Specialty Code.  Width of stairs or alternating tread device shall be a minimum of 30 inches.  Handrails shall be provided at both sides of stair or alternating tread device.  Headroom at stair or alternating tread device shall be not less than 6 feet 6 inches at any point.

 

(2)  A loft space need not be provided with exterior openings for natural light or ventilation provided the loft area is open and unobstructed to the floor below, except for columns and posts and railings not more than 42 inches high, and the floor below onto which the loft opens has exterior openings equal to the total required for the floor area served and the loft.

c. Porthole assemblies, whether new or salvaged, may be installed in a floating structure to enhance the nautical character of the structure.  Such assemblies need not comply with the energy conservation requirements of the specialty code provided the total area of all such assemblies installed do not constitute more than five percent (5%) of the total exterior wall area of the floating structure.  Such assemblies may be used to meet the required area for natural light and, if openable, to satisfy the required natural ventilation.

4. Where the Structural Specialty Code would require two exits be provided from a structure or occupancy within a structure, such exits shall be separated as required by the specialty code.  The point of exit discharge for the exits shall comply with the following:

a. The exits shall discharge directly to a main walkway at two separate locations located as far apart as is practicable; or,

 

b. The exits shall discharge to two separate fingerfloats or walks located on opposite sides of the structure.  Fingerfloats shall each have direct and independent access to a main walkway.  Walks shall each have direct and independent access to a fingerfloat or main walkway.  The point of exit discharge onto the walk shall not be more than fifty (50) feet travel distance from the point of access to the main walkway; or,

 

c. The exits shall discharge to a continuous walk that encircles the structure on at least three sides and which provides the capability for exiting in two directions along the walk to one of two separate and distinct locations where the walk accesses the main walkway.

 

d. Walks need not exceed the width specified in Section 28.60.060 unless the occupant load served by the walk exceeds 150 persons.