Tool

Soffit Sprinkler Placement

Enter the width and height of the soffit to find required sprinkler placement. Supports NFPA 13-2019 Chapter 10 standard spray and Chapter 12 residential sprinklers — pendent, upright, and sidewall orientations.

Soffit Sprinkler Placement

Select sprinkler type, then enter soffit dimensions to find required placement per NFPA 13-2019 Chapter 10 (standard spray) or Chapter 12 (residential).

Sprinkler type

Sprinkler standard

Orientation

Soffit dimensions

Soffit width

Horizontal projection of the soffit from the wall (D). Must be 30 inches or less.

Soffit height

Vertical distance from the bottom of the soffit down to the sprinkler deflector (B).

Section view

Place sprinkler this far from the wall

1' 8"

A = (D − 8″) + B · NFPA 13-2019 Figure 10.2.7.1.2(b)

Engineering disclaimer

Results are for preliminary engineering only. Final designs must be reviewed by a licensed fire protection engineer and verified against NFPA 13/14 and the local AHJ.

NFPA 13-2019 Chapter 10 standard spray and Chapter 12 residential sprinklers. Pendent/upright and residential sidewall use the obstruction-against-wall formula; standard sidewall uses Table 10.3.6.1.4.

Required placement

Sprinkler standard: Standard spray (Ch 10)
Orientation: Pendent / upright
NFPA reference: NFPA 13-2019 Figure 10.2.7.1.2(b)
Soffit width (D): 2'
Soffit height (B): 4"
Distance from wall (A): 1' 8"
Rule applies: Yes — soffit is 30 inches wide or less