Chapter 13.110
BUILDING CODE
Sections:
13.110.020 International Building Code.
13.110.030 International Residential Code.
13.110.040 International Existing Building Code.
13.110.050 International Wildland Urban Interface Code.
13.110.010 Building Code.
The International Building Code, the International Residential Code, the International Existing Building Code, and the International Wildland Urban Interface Code, all published by the International Code Council and adopted and amended by this chapter, shall collectively be referred to as the Building Code. (Ord. 23-1016 § 1 (Exh. A); Ord. 20-1028 § 1; Ord. 16-1008 § 2 (part): Ord. 13-1009 § 1 (part): Ord. 10-1018 § 3 (part): Ord. 07-1012 § 1: Ord. 04-1008 § 3)
13.110.020 International Building Code.
The most current edition of the International Building Code, including Appendix E, as amended by the Washington State Building Code Council and published in Chapter 51-50 WAC is hereby adopted by reference as now or hereafter amended, with the following additions and exceptions:
A. Appendixes E and H are hereby adopted.
B. The following is added to Section 504, Height Modifications:
504.2.1 Five story type VA buildings allowed.
Type VA buildings with B, M, R-1 and R-2 occupancies may be increased to five stories in height in accordance with all of the following:
1. The building is equipped throughout with an approved automatic sprinkler system in accordance with Section 903.3.1.1; and
2. The building is equipped with a complete, approved fire alarm and detection system; and
3. The fire sprinkler alarm system is provided with annunciation for each floor; and
4. The building does not exceed 70 feet in height; and
5. The vertical exit enclosures shall be smoke proof enclosures in accordance with Section 909; and
6. Special inspection is provided for the lateral support portion of the structural system; and
7. The building must comply with all other applicable provisions of Title 13 of the SeaTac Municipal Code.
(Ord. 23-1016 § 1 (Exh. A); Ord. 20-1028 § 1; Ord. 16-1008 § 2 (part): Ord. 13-1009 § 1 (part): Ord. 10-1018 § 3 (part): Ord. 07-1012 § 1: Ord. 04-1029 § 1: Ord. 04-1008 § 3)
13.110.030 International Residential Code.
The most current edition of the International Residential Code, including Appendix F, Appendix Q and Appendix U, as amended by the Washington State Building Code Council and published in Chapter 51-51 WAC, is hereby adopted by reference as now or hereafter amended, with the following additions and exceptions:
A. Table R301.2, Climate and Geographic Design Criteria, is hereby amended to read as follows:
|
Ground/Roof Snow Load: |
20 psf with drift calculations; 25 psf without drift calculations |
|
Wind Speed: |
85 mph |
|
Topographic Effects: |
No |
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Seismic Design Category: |
D2 |
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Subject to Damage From: |
|
|
Weathering: |
Moderate |
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Frost Line Depth: |
18 inches |
|
Termite: |
Slight to Moderate |
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Decay: |
Slight to Moderate |
|
Outside Design Temperatures: |
24F Heat; 83F Cool. |
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Ice Shield Underlayment Required: |
No |
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Flood Hazards: |
FEMA # 530320 |
|
Air Freezing Index: |
50 |
|
Mean Annual Temperature: |
51.4 |
B. Section R105.2(1) is hereby amended to read as follows:
1. One-story detached accessory structures constructed under the provisions of the IRC used as tool and storage sheds, tree supported play structures, playhouses and similar uses, provided the floor area does not exceed 200 square feet (18.58 square meters).
C. The following is added to R405.1.1 to read as follows:
Drainage. Provisions shall be made for the control and drainage of water around and under buildings.
Adequate provisions shall be made to insure that under floor spaces remain free of running or standing water by the installation of drains. Additional drains are required in foundations to relieve water from under floor spaces where it is determined by the Building Official that such drainage is required. Drain pipes shall be of sufficient size to adequately convey water to an approved location, but shall be a minimum size of 4 inches. Provisions shall be made to prevent the drainage system from becoming blocked.
(Ord. 23-1016 § 1 (Exh. A); Ord. 20-1028 § 1; Ord. 16-1008 § 2 (part): Ord. 13-1009 § 1 (part): Ord. 10-1018 § 3 (part): Ord. 07-1012 § 1: Ord. 04-1008 § 3)
13.110.040 International Existing Building Code.
The most current edition of the International Existing Building Code, as amended by the Washington State Building Code Council and published in Chapter 51-50 WAC, is hereby adopted by reference, as now or hereafter amended. (Ord. 23-1016 § 1 (Exh. A); Ord. 20-1028 § 1; Ord. 16-1008 § 2 (part): Ord. 13-1009 § 1 (part): Ord. 10-1018 § 3 (part): Ord. 07-1012 § 1: Ord. 04-1008 § 3. Formerly 13.110.050)
13.110.050 International Wildland Urban Interface Code.
The most current edition of the International Wildland Urban Interface Code as amended by the Washington State Building Code Council and published in Chapter 51-55 WAC is hereby adopted by reference, as now or hereafter amended. (Ord. 23-1016 § 1 (Exh. A))
13.110.060 Copies on file.
Repealed by Ord. 23-1016. (Ord. 20-1028 § 1; Ord. 16-1008 § 2 (part): Ord. 13-1009 § 1 (part): Ord. 10-1018 § 3 (part): Ord. 07-1012 § 1: Ord. 04-1008 § 3)