Through-Penetration F/T Rating Calculator

Determine F and T fire ratings, fill volume, and material requirements for through-penetration firestop systems.

Opening width (in)

Opening height (in)

Barrier thickness (in)

Penetrant type (1-4)

Required fire rating (hrs)

Tab to move between fields

F-rating (hrs)

Opening area (sq in)64

T-rating (hrs)2

Fill material (gal)1.66

Needs intumescent collar (0/1)0

Material cost ($)$74.70

Sleeve Recommended1

How to Use This Calculator

What each input means

Opening width (in): Width of the penetration opening.
Opening height (in): Height of the penetration opening.
Barrier thickness (in): Thickness of the fire-rated wall or floor.
Penetrant type (1-4): 1 = Metallic pipe, 2 = Plastic pipe, 3 = Cable/conduit, 4 = Mixed.
Required fire rating (hrs): Required hourly fire resistance rating.

Opening area (sq in): Total area of the penetration opening.
F-rating (hrs): Flame passage resistance in hours.
T-rating (hrs): Temperature rise resistance in hours.
Fill material (gal): Volume of firestop fill material needed.
Needs intumescent collar (0/1): 1 = intumescent collar required (plastic penetrants).
Material cost ($): Estimated material cost.

Identify Input Parameters
4 parameters
Opening width (in) = 8, Opening height (in) = 8, Barrier thickness (in) = 6, Penetrant type (1-4) = 1 = 5 input(s) provided
Calculate F-rating
F-rating
2 = 2
Calculate Opening area
Opening area = openingWidthIn * openingHeightIn
64 = 64
Calculate T-rating
T-rating
2 = 2