ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Danish Institute of Fire and Security Technology

Sprinkler Research – Glass Construction

Anders Drustrup

7th International Fire Sprinkler Conference & Exhibition

2008 Copenhagen, Denmark

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Purpose with testReplace a “standard” passive fire protective system with a combined active and passive system.

Passive systemGlazed partition (3200 mm x 2035mm)Aluminium frame with Intermediate mullionTempered glass

Active systemWindow sprinklerk-factor 80 LPM/bar½ (5.6 GPM/psi½)Quick response bulb 68°

Required Classification EI 60, Integrity 60 minutesInsulation 60 minutesAccording to EN 1364-1 (ISO 834, temperature curve)

EN 1364-1 Fire resistance tests for non-loadbearing elements – Part 1: Walls

DEKO Glazed partition

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Motivation

Reduced building costs for 60 minutes partition

Partition with fire resistant glass 1300 –1600 €

Partition with tempered glass including sprinkling 450 - 530 €

Reduction approx. 65 %

Reduced self-weight

25 mm fire resistant glass 65 kg/m2

6 mm + 8 mm tempered glass 35 kg/m2

Reduction approx. 45 %

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Furnace specifications

22 Gas burners

215 kW per burner

Total capacity approx. 4700 kW

Test Setup

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Furnace Temperature

0

100

200

300

400

500

600

700

800

900

1000

0 5 10 15 20 25 30 35 40 45 50 55 60 65 70

Time [Minutes]

Te

mp

era

ture

[C

°]ISO 834

Maximum

Average

Minimum

Temperature equlibrium reached, 45 minutes

Maximum furnace effect8 minutes

Test results

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Test results after 62 minutes

Measured temperature rise on unexposed side:

•All temperatures on glass and frame below 140 C°

•All temperature curves showed a tendency to level out

Radiation from test specimen

•Radiation was approx. 1.1 kW/m2 at test stop

Deflection of test specimen

•Measured deflection of between ± 2 mm

DEKO Glazed partition

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Test Summary

• Integrity and Insulation criteria fulfilled

• Insignificant radiation from test specimen

• Insignificant deflection of test specimen, indicating low temperature gradient in test specimen

• Dry spots around centre post observed

• Fracture of glass after test stop (during the cooling phase).

DEKO Glazed partition

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Critical parametersinfluencing the stress in the glazing

Passive system:• Type of glass, • Edge handling• Size of glass• Blocking up of the glass• Fixation of glass in frame

Active system:• Response time • Spray pattern• Water flow • The formation of dry spots

during the test• Position of mullions

ADR/2008-05-27

Danish Institute of Fire and Security Technology

Sprinklered glazed partition

Needs for the futureStandardised methods for combined systems:A standard to evaluate the critical parameters of the active and

passive systemwith rules for field of application of test results, to be used in thefollowing FSE calculations.

Possible technical committee’s in CEN to the undertake the work:

CEN/TC 127 Fire safety in buildingCEN/TC 191 Fixed fire fighting systems

Suggestions:• Prescribed fire exposure scenarios for the period up to activation of

the active system (passive system only).

• Verification of the passive systems ability to withstand the fire exposure until the active system responds.

• Verification of the passive systems ability to withstand the thermal

shock originating from the water cooling the passive system immediately after the active system respond.

• Verification of that the combined systems ability to withstand the long term fire exposure after the active system respond.