这是用户在 2024-5-4 19:25 为 https://up.codes/viewer/california/nfpa-13-2022/chapter/10/installation-requirements-for-standard-pe... 保存的双语快照页面,由 沉浸式翻译 提供双语支持。了解如何保存?
Standard pendent, upright, and sidewall sprinklers shall be selected for use and installation as indicated in this chapter and shall be positioned and spaced in accordance with Section 9.5.
标准下垂、直立和壁挂式洒水喷头应根据本章的规定进行选择和安装,并应根据第 9.5 节的规定进行定位和间距设置。
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All requirements of Section 9.5 shall apply to standard pendent and upright spray sprinklers except as modified in Section 10.2.
除第 10.2 节中的修改外,第 9.5 节的所有要求均适用于标准垂直和直立式喷水灭火器。
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Upright and pendent spray sprinklers shall be permitted in all occupancy hazard classifications and building construction types unless the requirements of 9.3.2 apply.
除非第 9.3.2 节的要求适用,否则垂直和直立式喷水灭火器应允许在所有占用危险分类和建筑构造类型中使用。
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Quick-response sprinklers shall not be permitted for use in extra hazard occupancies under the density/area design method.
根据密度/面积设计方法,在高危占用场所不得使用快速响应洒水喷头。
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Except as permitted by 10.2.4.1.2, the protection area of coverage per sprinkler (As) shall be determined in accordance with 9.5.2.1.
除非符合 10.2.4.1.2 的规定,每个喷头的保护覆盖区域(A s )应根据 9.5.2.1 确定。
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The requirements of 10.2.4.1.1 shall not apply in a small room as defined in 3.3.206.
根据 3.3.206 中定义的小房间,不适用于 10.2.4.1.1 的要求。
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The protection area of coverage for each sprinkler in the small room shall be the area of the room divided by the number of sprinklers in the room.
小房间中每个洒水器的保护覆盖区域应为房间面积除以房间内洒水器数量。
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The maximum allowable protection area of coverage for a sprinkler (As) shall be in accordance with the value indicated in Table 10.2.4.2.1(a) through Table 10.2.4.2.1(d).
洒水器(A s )的最大允许保护覆盖面积应符合表 10.2.4.2.1(a)至表 10.2.4.2.1(d)中指示的值。
Table 10.2.4.2.1(a) Protection Areas and Maximum Spacing of Standard Pendent and Upright Spray Sprinklers for Light Hazard
表 10.2.4.2.1(a)轻危标准下垂和直立式洒水喷头的保护区域和最大间距。
Construction Type 建筑类型 System Type 系统类型 Maximum Protection Area 最大保护区域 Maximum Spacing 最大间距
ft2 m2 ft m
Noncombustible unobstructed
不可燃的无阻碍
Hydraulically calculated
水力计算
225 20 15 4.6
Noncombustible unobstructed
不燃不阻燃
Pipe schedule 管道进度表 200 18 15 4.6
Noncombustible obstructed
不燃阻燃
Hydraulically calculated
水力计算
225 20 15 4.6
Noncombustible obstructed
不可燃障碍物
Pipe schedule 管道进度表 200 18 15 4.6
Combustible unobstructed with no exposed members
可燃物无障碍,无暴露部件
Hydraulically calculated
水力计算
225 20 15 4.6
Combustible unobstructed with no exposed members
可燃物无障碍,无暴露部件
Pipe schedule 管道进度表 200 18 15 4.6
Combustible unobstructed with exposed members 3 ft (910 mm) or more on center
可燃物无障碍,裸露构件中心距 3 英尺(910 毫米)或更多
Hydraulically calculated
水力计算
225 20 15 4.6
Combustible unobstructed with exposed members 3 ft (910 mm) or more on center
可燃物无障碍,中心距离 3 英尺(910 毫米)或更多的裸露构件
Pipe schedule 管道进度表 200 18 15 4.6
Combustible unobstructed with members less than 3 ft (910 mm) on center
可燃物无障碍,中心距离小于 3 英尺(910 毫米)的构件
All 130 12 15 4.6
Combustible obstructed with exposed members 3 ft (910 mm) or more on center
可燃物被暴露的构件阻挡,中心距离为 3 英尺(910 毫米)或更多
All 168 16 15 4.6
Combustible obstructed with members less than 3 ft (910 mm) on center
可燃物被小于 3 英尺(910 毫米)的构件阻挡
All 130 12 15 4.6
Combustible concealed spaces in accordance with 10.2.6.1.4
根据 10.2.6.1.4 的规定,可燃隐蔽空间。
All 120 11 15 parallel to the slope
15 与斜坡平行


10 perpendicular to the slope*
10 垂直于斜坡*
4.6 parallel to the slope
4.6 与斜坡平行


10 perpendicular to the slope*
与坡度垂直的 10*
*See 10.2.6.1.4.4. *见 10.2.6.1.4.4。
Table 10.2.4.2.1(b) Protection Areas and Maximum Spacing of Standard Pendent and Upright Spray Sprinklers for Ordinary Hazard
普通危险的标准挂壁式和直立式喷水灭火器的保护区域和最大间距表 10.2.4.2.1(b)
Construction Type 建筑类型 System Type 系统类型 Protection Area 保护区域 Maximum Spacing 最大间距
ft2 m2 ft m
All All 130 12 15 4.6
Table 10.2.4.2.1(c) Protection Areas and Maximum Spacing of Standard Pendent and Upright Spray Sprinklers for Extra Hazard
表 10.2.4.2.1(c) 额外危险标准挂壁式和立式喷水灭火器的保护区域和最大间距
Construction Type 建筑类型 System Type 系统类型 Protection Area 保护区域 Maximum Spacing 最大间距
ft2 m2 ft m
All Pipe schedule 管道进度表 90 8.4 12* 3.7*
All Hydraulically calculated with density
通过密度水力计算

≥0.25 gpm/ft2
(10.2 mm/min) (10.2 毫米/分钟)
100 9 12* 3.7*
All Hydraulically calculated with density
通过密度水力计算

<0.25 gpm/ft2 <0.25 每分钟/英尺 2
(10.2 mm/min) (10.2 毫米/分钟)
130 12 15 4.6
*In buildings where solid structural members create bays up to 25 ft (7.6 m) wide, maximum spacing between sprinklers is permitted up to 12 ft 6 in. (3.8 m).
*在建筑物中,当坚固的结构构件创建宽度达到 25 英尺(7.6 米)的区域时,允许喷头之间的最大间距最多为 12 英尺 6 英寸(3.8 米)。
Table 10.2.4.2.1(d) Protection Areas and Maximum Spacing of Standard Pendent and Upright Spray Sprinklers for High-Piled Storage
高堆储存区域标准挂壁式和立式喷水灭火器的保护区域和最大间距表 10.2.4.2.1(d)
Construction Type 建筑类型 System Type 系统类型 Protection Area 保护区域 Maximum Spacing 最大间距
ft2 m2 ft m
All Hydraulically calculated with density
通过密度进行液压计算

≥0.25 gpm/ft2
(10.2 mm/min) (10.2 毫米/分钟)
100 9 12* 3.7*
All Hydraulically calculated with density
通过密度进行液压计算

<0.25 gpm/ft2
(10.2 mm/min) (10.2 毫米/分钟)
130 12 15 4.6
*In buildings where solid structural members create bays up to 25 ft (7.6 m) wide, maximum spacing between sprinklers is permitted up to 12 ft 6 in. (3.8 m).
*在建筑物中,固体结构构件创建的区域最宽可达 25 英尺(7.6 米),喷头之间的最大间距可达 12 英尺 6 英寸(3.8 米)。
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In any case, the maximum area of coverage of a sprinkler shall not exceed 225 ft2 (20 m2).
在任何情况下,喷头的最大覆盖面积不得超过 225 平方英尺(20 米 2 )。
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The maximum distance permitted between sprinklers shall comply with Table 10.2.4.2.1(a) through Table 10.2.4.2.1(d).
喷头之间允许的最大距离应符合表 10.2.4.2.1(a)至表 10.2.4.2.1(d)的规定。
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The distance from sprinklers to walls shall not exceed one-half of the allowable distance between sprinklers as indicated in Table 10.2.4.2.1(a) through Table 10.2.4.2.1(d).
喷头到墙壁的距离不得超过表 10.2.4.2.1(a)至表 10.2.4.2.1(d)中所示的喷头允许距离的一半。
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The requirements of 10.2.5.2.1 shall not apply where walls are angled or irregular, and the maximum horizontal distance between a sprinkler and any point of floor area protected by that sprinkler shall not exceed 0.75 times the allowable distance permitted between sprinklers, provided the maximum perpendicular distance is not exceeded.
当墙壁是倾斜或不规则的时,10.2.5.2.1 的要求不适用,且喷头与受其保护的任何地板区域的最大水平距离不得超过喷头允许距离的 0.75 倍,前提是不超过最大垂直距离。
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The requirements of 10.2.5.2.1 shall not apply within small rooms as defined in 3.3.206.
根据 3.3.206 中定义的小房间,10.2.5.2.1 的要求不适用。
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Sprinklers shall be permitted to be located not more than 9 ft (2.7 m) from any single wall.
喷水灭火器可距任何单面墙不超过 9 英尺(2.7 米)的位置。
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Sprinkler spacing limitations of 10.2.5 and area limitations of Table 10.2.4.2.1 (a) shall not be exceeded.
不得超过 10.2.5 的喷水灭火器间距限制和表 10.2.4.2.1(a)的区域限制。
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Under curved surfaces, the horizontal distance shall be measured at the floor level from the wall, or the intersection of the curved surface and the floor to the nearest sprinkler shall not be greater than one-half the allowable distance between sprinklers.
在弯曲表面下,水平距离应该从墙壁或弯曲表面与地板的交点处测量到最近的喷头,距离不得大于喷头之间允许距离的一半。
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Sprinklers shall be located a minimum of 4 in. (100 mm) from a wall.
喷头应距墙壁最少 4 英寸(100 毫米)。
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Unless the requirements of 10.2.5.4.2 or 10.2.5.4.3 are met, sprinklers shall be spaced not less than 6 ft (1.8 m) on center.
除非符合 10.2.5.4.2 或 10.2.5.4.3 的要求,否则喷头之间的间距不得少于 6 英尺(1.8 米)。
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Sprinklers shall be permitted to be placed less than 6 ft (1.8 m) on center where the following conditions are satisfied:
洒水器可以放置在距离中心不到 6 英尺(1.8 米)的地方,前提是满足以下条件:
  1. Baffles shall be arranged to protect the actuating elements.
    挡板应该被安排好以保护执行元件。
  2. Baffles shall be of solid and rigid material that will stay in place before and during sprinkler operation.
    隔板应采用坚固而刚性的材料,能在洒水器运行前后保持在原位。
  3. Baffles shall be not less than 8 in. (200 mm) long and 6 in. (150 mm) high.
    隔板长度不得少于 8 英寸(200 毫米),高度不得少于 6 英寸(150 毫米)。
  4. The tops of baffles shall extend between 2 in. and 3 in. (50 mm and 75 mm) above the deflectors of upright sprinklers.
    隔板顶部应延伸在直立式洒水器的偏转器上方,距离偏转器顶部 2 英寸至 3 英寸(50 毫米至 75 毫米)。
  5. The bottoms of baffles shall extend downward to a level at least even with the deflectors of pendent sprinklers.
    隔板底部应向下延伸至少与下垂洒水喷头的偏转器齐平的水平面。
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In-rack sprinklers shall be permitted to be placed less than 6 ft (1.8 m) on center.
货架内洒水喷头允许间距小于 6 英尺(1.8 米)。
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Under unobstructed construction, the distance between the sprinkler deflector and the ceiling shall be a minimum of 1 in. (25 mm) and a maximum of 12 in. (300 mm) throughout the area of coverage of the sprinkler.
在无障碍的情况下,喷水器偏转器与天花板之间的距离应在整个喷水器覆盖范围内保持在最小 1 英寸(25 毫米)和最大 12 英寸(300 毫米)之间。
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The requirements of 10.2.6.1.1.1 shall not apply where ceiling-type sprinklers (concealed, recessed, and flush types) have the operating element above the ceiling and the deflector located nearer to the ceiling where installed in accordance with their listing.
当天花板式喷头(隐蔽式、嵌入式和平齐式)的操作元件位于天花板上方,偏转器位于靠近天花板的位置并符合其清单要求时,不适用于 10.2.6.1.1.1 的要求。
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The requirements of 10.2.6.1.1.1 shall not apply for light and ordinary hazard occupancies with ceilings of noncombustible or limited-combustible construction where either 10.2.6.1.1.3(A) or 10.2.6.1.1.3(B) applies.
在非可燃或有限可燃构造的轻型和普通危险场所,如果适用于 10.2.6.1.1.3(A)或 10.2.6.1.1.3(B),则不适用于 10.2.6.1.1.1 的要求。
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Where a vertical change in ceiling elevation within the area of coverage of the sprinkler creates a distance of more than 36 in. (900 mm) between the upper ceiling and the sprinkler deflector, a vertical plane extending down from the ceiling at the change in elevation shall be considered a wall for the purpose of sprinkler spacing as shown in Figure 10.2.6.1.1.3(A).
在洒水器覆盖区域内天花板高度垂直变化,导致天花板与洒水器偏转器之间的距离超过 36 英寸(900 毫米)时,从天花板下垂直延伸的平面将被视为墙壁,用于洒水器间距的目的,如图 10.2.6.1.1.3(A)所示。
FIGURE 10.2.6.1.1.3(A) Vertical Change in Ceiling Elevation Greater Than 36 in. (900 mm).
图 10.2.6.1.1.3(A) 天花板高度垂直变化大于 36 英寸(900 毫米)。
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Where the distance between the upper ceiling and the sprinkler deflector is less than or equal to 36 in. (900 mm), the sprinklers shall be permitted to be spaced as though the ceiling was flat, provided the obstruction rules are observed as shown in Figure 10.2.6.1.1.3(B).
当天花板与洒水器偏转器之间的距离小于或等于 36 英寸(900 毫米)时,允许将洒水器间距设置为天花板是平的,前提是遵守障碍物规则,如图 10.2.6.1.1.3(B)所示。
FIGURE 10.2.6.1.1.3(B) Vertical Change in Ceiling Elevation Less Than or Equal to 36 in. (900 mm).
图 10.2.6.1.1.3(B) 垂直天花板高度变化小于或等于 36 英寸(900 毫米)。
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Under obstructed construction, the sprinkler deflector shall be located in accordance with one of the following arrangements:
在受阻建筑下,洒水喷头偏转器应按以下安排之一设置:
  1. Installed with the deflectors within the horizontal planes of 1 in. to 6 in. (25 mm to 150 mm) below the structural members and a maximum distance of 22 in. (550 mm) below the ceiling/roof deck
    安装时偏转器位于结构构件下方水平面内,距离天花板/屋顶板最大距离为 1 英寸至 6 英寸(25 毫米至 150 毫米),距离天花板/屋顶板最大距离为 22 英寸(550 毫米)。
  2. Installed with the deflectors at or above the bottom of the structural member to a maximum of 22 in. (550 mm) below the ceiling/roof deck where the sprinkler is installed in conformance with 10.2.7.2
    在结构构件的底部或以上安装偏转器,最大距离不超过天花板/屋顶板下方 22 英寸(550 毫米),喷头安装符合 10.2.7.2 的规定。
  3. Installed in each bay of obstructed construction, with the deflectors located a minimum of 1 in. (25 mm) and a maximum of 12 in. (300 mm) below the ceiling
    安装在每个受阻建筑的舱内,偏转器位于天花板下方最少 1 英寸(25 毫米)至最多 12 英寸(300 毫米)处。
  4. Installed with the deflectors within the horizontal planes 1 in. to 6 in. (25 mm to 150 mm) below composite wood joists to a maximum distance of 22 in. (550 mm) below the ceiling/roof deck only where joist channels are fire-stopped to the full depth of the joists with material equivalent to the web construction so that individual channel areas do not exceed 300 ft2 (28 m2)
    在复合木梁下方的水平平面内安装偏转器,距离天花板/屋顶板最多 22 英寸(550 毫米),距离梁道的下限为 1 英寸至 6 英寸(25 毫米至 150 毫米),只有当梁道被阻火到与腹板结构等效的材料的全深度时,个别梁道区域不超过 300 平方英尺(28 平方米)。
  5. * Installed with deflectors of sprinklers under concrete tee construction with stems spaced less than 71/2 ft (2.3 m) on centers, regardless of the depth of the tee, located at or above a horizontal plane 1 in. (25 mm) below the bottom of the stems of the tees and complying with Table 10.2.7.2(a) or Table 10.2.7.2(b)
    * 安装有洒水喷头偏转器的混凝土 T 形构造,茎距小于 7 1 / 2 英尺(2.3 米)中心,无论 T 形构造的深度如何,位于或高于水平面以下 1 英寸(25 毫米)处,符合表 10.2.7.2(a)或表 10.2.7.2(b)的规定
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Unless the requirements of 10.2.6.1.3.2 or 10.2.6.1.3.3 are met, sprinklers under or near the peak of a roof or ceiling shall have deflectors located not more than 36 in. (900 mm) vertically down from the peak as indicated in Figure 10.2.6.1.3.1(a) and Figure 10.2.6.1.3.1(b).
除非满足 10.2.6.1.3.2 或 10.2.6.1.3.3 的要求,否则屋顶或天花板顶部或附近的洒水器的偏转器应垂直向下距离顶部不超过 36 英寸(900 毫米),如图 10.2.6.1.3.1(a)和图 10.2.6.1.3.1(b)所示。
FIGURE 10.2.6.1.3.1(a) Sprinklers Under Pitched Roof with Sprinkler Directly Under Peak; Branch Lines Run Up Slopes.
图 10.2.6.1.3.1(a) 斜屋顶下的喷水器,喷水器直接位于顶峰下;分支管沿斜坡铺设。
FIGURE 10.2.6.1.3.1(b) Sprinklers at Pitched Roof; Branch Lines Run Up Slopes.
图 10.2.6.1.3.1(b) 屋顶斜坡处的喷水灭火器; 分支管线沿斜坡铺设。
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Under saw-toothed roofs, sprinklers at the highest elevation shall not exceed a distance of 36 in. (900 mm) measured down the slope from the peak.
在锯齿状屋顶下,最高处的洒水器不得超过距离 36 英寸(900 毫米),从山顶向下测量。
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Under a steeply pitched surface, the distance from the peak to the deflectors shall be permitted to be increased to maintain a horizontal clearance of not less than 24 in. (600 mm) from other structural members as indicated in Figure 10.2.6.1.3.3.
在陡峭倾斜的表面下,从顶部到偏转器的距离可以增加,以保持与其他结构构件的水平间隙不少于 24 英寸(600 毫米),如图 10.2.6.1.3.3 所示。
FIGURE 10.2.6.1.3.3 Horizontal Clearance for Sprinkler at Peak of Pitched Roof.
图 10.2.6.1.3.3 倾斜屋顶顶部洒水器的水平间隙。
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Sprinklers under a roof or ceiling in combustible concealed spaces of wood joist or wood truss construction with members less than 3 ft (900 mm) on center with a slope having a pitch of 4 in 12 or greater shall be positioned in accordance with Figure 10.2.6.1.4 and the requirements of 10.2.6.1.4.1 through 10.2.6.1.4.6.
木椽或木桁架构造的可燃隐蔽空间屋顶或天花板下的洒水器,其成员间距小于 3 英尺(900 毫米),坡度为 4 比 12 或更大,应按照图 10.2.6.1.4 的规定和 10.2.6.1.4.1 至 10.2.6.1.4.6 的要求进行定位。
FIGURE 10.2.6.1.4 Sprinklers Under Roof or Ceiling in Combustible Concealed Spaces of Wood Joist or Wood Truss Construction with Members Less Than 3 ft (900 mm) on Center with a Slope Having a Pitch of 4 in 12 or Greater.
图 10.2.6.1.4 木椽或木桁架构造的可燃隐蔽空间屋顶或天花板下的洒水器,成员间距小于 3 英尺(900 毫米),坡度为 4 比 12 或更大。
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Sprinklers shall be quick-response.
洒水器应为快速响应型。
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Sprinklers shall be installed so that a row of sprinklers is installed within 12 in. (300 mm) horizontally of the peak and between 1 in. and 12 in. (25 mm and 300 mm) down from the bottom of the top chord member.
应安装洒水器,使洒水器的一排在距离顶点水平 12 英寸(300 毫米)以内,并在顶弦成员底部下方 1 英寸至 12 英寸(25 毫米至 300 毫米)之间安装。
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Sprinklers shall be installed so that the sprinklers installed along the eave are located not less than 5 ft (1.5 m) from the intersection of the upper and lower truss chords or the wood rafters and ceiling joists.
喷头应安装在屋檐沿线,距离上下桁或木椽和天花板桁交点不少于 5 英尺(1.5 米)处。
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Sprinklers installed where the dimension perpendicular to the slope exceeds 8 ft (2.4 m) shall have a minimum pressure of 20 psi (1.4 bar).
在垂直于坡度的尺寸超过 8 英尺(2.4 米)的地方安装的喷头,最低压力应为 20 磅/平方英寸(1.4 巴)。
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The requirements of 10.2.6.1.4.3 or 10.2.6.1.4.4 shall not apply to sprinklers installed at the corner of the eave of a hip type roof where located directly under the hip line spaced in accordance with 10.2.5.2.2 or located on the slope plane not less than 5 ft (1.5 m) from the intersection of the upper and lower truss chords or the wood rafters and ceiling joists on the eave and no more than 5 ft (1.5 m) from the hip line.
不得适用于安装在屋脊边角处的喷水器,其位置直接位于屋脊线下,间距符合 10.2.5.2.2,或位于坡面上,距离上下桁架或木椽和天花板横梁的交点不少于 5 英尺(1.5 米),距离屋脊线不超过 5 英尺(1.5 米)的 10.2.6.1.4.3 或 10.2.6.1.4.4 的要求。
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The special requirements of 10.2.4.2.1 and 10.2.6.1.4 shall not apply when the exposed combustible sheathing in the roof or ceiling space are constructed of pressure impregnated fire retardant-treated wood as defined by NFPA 703.
当屋顶或天花板空间中的暴露易燃护套构建为 NFPA 703 定义的压力浸渍阻燃处理木材时,不适用于 10.2.4.2.1 和 10.2.6.1.4 的特殊要求。
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Unless the requirements of 10.2.6.1.5.2 are met, where two sets of joists are under a roof or ceiling, and no flooring is over the lower set, sprinklers shall be installed above and below the lower set of joists where a clearance of 6 in. (150 mm) or more is between the top of the lower joist and the bottom of the upper joist as indicated in Figure 10.2.6.1.5.1.
除非满足 10.2.6.1.5.2 的要求,在屋顶或天花板下有两组横梁且下面没有地板的情况下,当下横梁顶部与上横梁底部之间的间隙为 6 英寸(150 毫米)或更多时,应根据图 10.2.6.1.5.1 的指示,在下横梁的上方和下方安装喷水灭火器。
FIGURE 10.2.6.1.5.1 Arrangement of Sprinklers Under Two Sets of Open Joists — No Sheathing on Lower Joists.
图 10.2.6.1.5.1 两组开放楼梁下洒水器布置 — 下层楼梁无护板。
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Sprinklers shall be permitted to be omitted from below the lower set of joists where at least 18 in. (450 mm) is maintained between the sprinkler deflector and the top of the lower joist.
当洒水器偏转器与下层楼梁顶部之间保持至少 18 英寸(450 毫米)时,允许省略下层楼梁下方的洒水器。
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Unless the requirements of 10.2.6.2.2 or 10.2.6.2.3 are met, deflectors of sprinklers shall be aligned parallel to ceilings, roofs, hips, or the incline of stairs.
除非符合 10.2.6.2.2 或 10.2.6.2.3 的要求,洒水器的偏转器应与天花板、屋顶、屋脊或楼梯的倾斜线平行。
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Where sprinklers are installed in the peak below a sloped ceiling or roof surface, the sprinkler shall be installed with the deflector horizontal.
在斜坡天花板或屋顶下方安装洒水器时,洒水器应安装偏转器水平放置。
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Roofs having a pitch not exceeding 2 in 12 (16.7 percent) are considered horizontal in the application of 10.2.6.2, and sprinklers shall be permitted to be installed with deflectors horizontal.
屋顶的坡度不超过 2/12(16.7%)时,在 10.2.6.2 的应用中被视为水平,洒水器可以安装偏转器水平放置。
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Sprinklers shall be located so as to minimize obstructions to discharge as defined in 10.2.7, or additional sprinklers shall be provided to ensure adequate coverage of the hazard.
喷头应布置在位置上,以减少 10.2.7 中定义的排放障碍,或者应提供额外的喷头,以确保对危险的充分覆盖。
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Sprinklers shall be arranged to comply with one of the following arrangements:
喷头应布置成以下布置之一:
  1. Subsection 9.5.5.2, Table 10.2.7.2(a) or Table 10.2.7.2(b), and Figure 10.2.7.2(a) shall be followed.
    应遵循 9.5.5.2 小节、表 10.2.7.2(a)或表 10.2.7.2(b),以及图 10.2.7.2(a)。
  2. Sprinklers shall be permitted to be spaced on opposite sides of obstructions not exceeding 4 ft (1.2 m) in width, provided the distance from the centerline of the obstruction to the sprinklers does not exceed one-half the allowable distance permitted between sprinklers.
    允许将喷头间距设置在不超过 4 英尺(1.2 米)宽的障碍物的对立面,前提是从障碍物中心线到喷头的距离不超过喷头之间允许距离的一半。
  3. Obstructions located against the wall and that are not over 30 in. (750 mm) in width shall be permitted to be protected in accordance with Figure 10.2.7.2(b).
    靠墙放置且宽度不超过 30 英寸(750 毫米)的障碍物,应允许按照图 10.2.7.2(b)的规定进行保护。
  4. Obstructions located against the wall and that are not over 24 in. (600 mm) in width shall be permitted to be protected in accordance with Figure 10.2.7.2(c). The maximum distance between the sprinkler and the wall shall be measured from the sprinkler to the wall behind the obstruction and not to the face of the obstruction.
    靠墙放置且宽度不超过 24 英寸(600 毫米)的障碍物,应允许按照图 10.2.7.2(c)的规定进行保护。洒水器与墙之间的最大距离应从洒水器到障碍物后面的墙壁测量,而不是到障碍物的正面。
  5. Obstructions no greater than 12 in. (300 mm) in width in hallways up to 6 ft (1.8 m) in width shall be permitted in accordance with Figure 10.2.7.2(d) when the sprinkler is located within the allowable obstruction zone and the closest edge of the obstruction is a minimum of 12 in. (300 mm) away from the centerline of the sprinkler.
    在宽度不超过 6 英尺(1.8 米)的走廊中,宽度不超过 12 英寸(300 毫米)的障碍物可以按照图 10.2.7.2(d)的规定允许,当洒水器位于允许的障碍区域内,并且障碍物最近的边缘距离洒水器中心线至少 12 英寸(300 毫米)时。
  6. Sprinklers shall be installed below fixed obstructions over 4 ft (1.2 m) wide.
    洒水器应安装在宽度超过 4 英尺(1.2 米)的固定障碍物下方。
  7. Sprinklers shall not be required under obstructions 4 ft. (1.2 m) or less wide when the provisions of Table 10.2.7.2(a) or Table 10.2.7.2(b) and Figure 10.2.7.2(a) are maintained.
    当保持表 10.2.7.2(a)或表 10.2.7.2(b)和图 10.2.7.2(a)的规定时,宽度不到 4 英尺(1.2 米)的障碍物下不需要喷头。
Table 10.2.7.2(a) Positioning of Sprinklers to Avoid Obstructions to Discharge [Standard Spray Upright/Standard Spray Pendent (SSU/SSP)]
表 10.2.7.2(a) 避免障碍物喷头位置 [标准喷水直立式/标准喷水垂直式(SSU/SSP)]
Distance from Sprinkler to Side of Obstruction (A) (ft)
喷头到障碍物侧面的距离(A)(英尺)
Allowable Distance of Deflector Above Bottom of Obstruction (B) (in.)
遮流器距障碍物底部的允许距离(B)(英寸)
Less than 1 少于 1 0
1 or more 1 或更多 21/2 or less
2 1 / 2 或更少
11/2 or more
1 1 / 2 或更多
31/2 or less
3 1 / 2 或更少
2 or more 2 个或更多 51/2 or less
5 1 / 2 或更少
21/2 or more
2 1 / 2 或更多
71/2 or less
7 1 / 2 或更少
3 or more 3 或更多 91/2 or less
9 1 / 2 或更少
31/2 or more
3 个 1 / 2 或更多
12 or less 12 或更少
4 or more 4 或更多 14 or less 14 或更少
41/2 or more
4 1 / 2 或更多
161/2 or less
16 1 / 2 或更少
5 or more 5 或更多 18 or less 18 或更少
51/2 or more
5 1 / 2 或更多
20 or less 20 或更少
6 or more 6 或更多 24 or less 24 或更少
61/2 or more
6 个 1 / 2 或更多
30 or less 30 或更少
7 or more 7 或更多 35 or less 35 或更少
Note: For A and B, refer to Figure 10.2.7.2(a).
Table 10.2.7.2(b) Positioning of Sprinklers to Avoid Obstructions to Discharge [Standard Spray Upright/Standard Spray Pendent (SSU/SSP)]
表 10.2.7.2(b) 避免障碍物影响喷水器排水位置 [标准喷射直立式/标准喷射垂直式(SSU/SSP)]
Distance from Sprinkler to Side of Obstruction (A) (mm)
从洒水器到障碍物侧面的距离(A)(毫米)
Allowable Distance of Deflector Above Bottom of Obstruction (B) (mm)
遮挡物底部以上偏转器允许的距离(B)(毫米)
Less than 300 少于 300 0
300 or more 300 或更多 65 or less 65 或更少
450 or more 450 或更多 90 or less 90 或更少
600 or more 600 或更多 140 or less 140 或更少
750 or more 750 或更多 190 or less 190 或更少
900 or more 900 或更多 240 or less 240 或更少
1100 or more 1100 或更多 300 or less 300 或更少
1200 or more 1200 或更多 350 or less 350 或更少
1400 or more 1400 或更多 420 or less 420 或更少
1500 or more 1500 或更多 450 or less 450 或更少
1700 or more 1700 或更多 510 or less 510 或更少
1800 or more 1800 或更多 600 or less 600 或更少
2000 or more 2000 或更多 750 or less 750 或更少
2100 or more 2100 或更多 875 or less 875 或更少
Note: For A and B, refer to Figure 10.2.7.2(a).
注意:对于 A 和 B,请参考图 10.2.7.2(a)。
FIGURE 10.2.7.2(a) Positioning of Sprinkler to Avoid Obstruction to Discharge (SSU/SSP).
图 10.2.7.2(a)位置喷头以避免阻碍排放(SSU/SSP)。
FIGURE 10.2.7.2(b) Obstruction Against Wall (SSU/SSP).
图 10.2.7.2(b) 阻挡墙壁 (SSU/SSP)。
FIGURE 10.2.7.2(c) Obstructions Against Walls (SSU/SSP).
图 10.2.7.2(c) 障碍物靠墙(SSU/SSP)。
FIGURE 10.2.7.2(d) Obstruction in Hallway.
图 10.2.7.2(d) 走廊中的障碍物。
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Continuous or noncontinuous obstructions less than or equal to 18 in. (450 mm) below the sprinkler deflector that prevent the pattern from fully developing shall comply with 10.2.7.3.
位于洒水器偏转器下方小于或等于 18 英寸(450 毫米)的连续或非连续障碍物,阻止喷洒图案充分发展的,应符合 10.2.7.3 的规定。
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