paroc fire safe system int

Building InsulationJanuary 2012

PAROC® FireSAFE systemFire protection of steel structure

2

ContentFire protection of steel structure ............... 3

Demands regarding fire insulation .......... 4

Why choose PAROC® Stone wool? ......... 6

Dimensioning of the insulation ................ 8

In built columns with square profile ....... 12

HSQ-beams ........................................ 13

Fire insulation of concrete decks ........... 14

Fire insulation of steel decks ................ 15

System components ............................. 16

Installation of PAROC® FireSAFE system 18

Alternative installation method .............. 19

PAROC® Energywise House™ With the Energywise House™ concept,

Paroc would like to give advice and

instructions about what you can do to

reduce the energy consumption when

building new houses or when renovating.

An energywise solution means that higher

requirements than those stipulated in the

building regulations are fulfilled, which

is a good investment for the future. So,

when you want to build energywise, think

PAROC® Energywise House™.

FIRE PROTECTION OF STEEL STRUCTURE

3

During a fire the load bearing steel frame work is heated up very quickly. After a fire period of 15-40 minutes such structures has lost half of their structural strength and should be collapsed at the subsequent influence of heat or under high temperature difference. Depending on thickness of profiles, cross sections and concrete stress of the applicable metal frame the fire resistance is limited to 15-40 minutes. At the same time the minimal demanded fire resistance limit for basic erection trusses, including metal frame work must be 30 to 150 minutes. The final demand is depending on the regulatory degree of the building fire resistance and the construction design types.

Idea behind the fire insulationThe scope of the metalwork fire protection is to improve the thermal insulation, the heat protection of the metal surfaces by the thermal insulation screening and maintaining the high temperature and direct fire impact. The use of thermal protection screens allows to slow down the heating of metal work and to keep their functional design properties during the specified period of time.

Cost efficiencyThe need of fire protection of steel structure with the increasing of the fire safety regulation requirements bringing fire safety to the building and constructions is one part of the problem. There is also a general need, as always, to keep the general costs for the fire protection down. These two parameters lead to the necessity of development and introduction of a high quality and efficient fire protection system into the construction practices.

The PAROC® FireSAFE systemParoc has developed a fire protection system based on the application of the non-combustible stone wool slab PAROC® FPS 17. The system has high resistance against impact of water, do not absorb moisture from the environmental atmosphere and has long life time. The class of fire resistance demanded for the specific steel frame is provided by a relevant selection of thicknesses of the PAROC® FPS 17. The thickness is depending on the massiveness section factor of the protected element but also on the critical steel temperature, which normally is 450 or 500 degrees centigrade.

ApprovalThe PAROC® FireSAFE system covering fire protection of steel structure, page 8 - 12, is approved in ETA-08/0093 given by VTT, Espoo, Finland.

Fire protection of steel structure

The PAROC® FireSAFE systemprovides the required fire resistance limit up to R210 (3½ hours) for protected components and metal frame. The system is approved by data in ETA-08/0093 about the fire protection.

F I R E P R O T E C T I O N O F S T E E L S T R U C T U R E

4

Rules for fire protection of our buildings are given from several authorities.– National rules for building

regarding new houses and changes in buildings are basically meant to protect human lives.

– Rules from insurance companies – basically for the protection of economical values.

– Rules from work protection, authority who looks at the safety for people in work life. Look for protection during time of building the house.

– Farming regulations – mainly for the protection of animals

– Further more there are a lot of regulations connected to special types of buildings.

To most of this rules there are many standardized test methods and to these connected conditions for the different classes of constructions and material that are given in the regulations. This principal for fire technical dimensioning is based on the so called standard fire curve, which means a medium development for a fire affecting the building. The method often gives a solution on the “safe side”. It is nowadays more and more common to go more deeply in to this. Then is a suspected development of the fire considered (most commonly including cooling phase) and calculates the time that the current building is expected to withstand the fire. To make such a dimensioning of a building demands a lot of experience and advanced tools. But this type of more advanced dimensioning is normally profitable – at least for bigger buildings.

In the following there is a short description given of the head rules in national regulations. It is limited to the demands that are connected to stone wool products from Paroc.

Demands regarding fire insulation

Fire technical building classesIn the national regulations the buildings are normally divided into classes. The parameters classifying a building are:– numbers of floors– type of use of the building– area of the building– fire load

Demands on material and constructions are various between the classes.

The classification can be increased by adding of the letter M when the construction shall withstand some mechanical influence and with the letter C for automatically closing doors. The term REI 60-M means that the construction, in addition to mechanical influence shall withstand load, tightness and temperature demands for 60 minutes.

Euro classesCoatingClass division of coatingThese are all requirements for the material used in a building. More information about this is to be found in PAROC® Insulation Theory.

A building is normally divided in fire cells. Houses for living or offices, stairs, garage, rooms for heating equipment, for collection of scrap, hotel room’s corridors for escaping are all examples of fire cells.

The demands regarding fire insulation of load bearing structures various a lots from country to country also within the EU.

From material point of view the rules, test methods and demands are all the same. Also the way of identifying the different classes for constructions is equal. The demand EI 60 has the same meaning where ever you go within EU.

It is when the type of building should be identified the differences starts to be evident. Also the way of identifying the load of fire in MJ/m2 varies a lot between countries. The third parameter is the number of storeys in the building.

All those parameters and varying demands make it impossible to compare the demands for different countries. Instead you can find a short brief country by country in the following:

The PAROC® FireSAFE systemuses all the advantages of complex fire protection at which additional function of slabs- reduction of thermal losses or undesirable heating at normal conditions.

Fire classified constructionsIn the national regulations are time requirements raised for different types of constructions in a building.– Load carrying ability – R. The

time that the construction is able to withstand the current load at a standard fire

– Integrity – E. The time that the construction keeps tight a standard fire

– Insulation – I. The time it takes for the cold side of the construction to reach a certain temperature, normally 140 °C mean temperature raise at a standard fire.

Construction classes R, RE, E, EI and REI may appear. They are followed by the time demand given in minutes, 15, 30, 45, 60, 90, 120, 180, 240 or 360.


5

Finland and EstoniaFor most buildings up to two floors there are almost no demands at all. Between 2 and 4 floors the demands vary between R 15 and R120 depending on use of the building. The most common demand is R 30 except for residential buildings where the normal demand is R 60.

Above this and the toughest building class, P1, has demands between R15 and R240. Depending on fire load the demand is varying like this: Fire load < 600 MJ/m2 has a typical demand of R 60, between 600- 1200 Mj/m2 it is R 90 that is most typical and above 1200 MJ/m2 the normal demand is R 120.

R 30 to R 120 covers most of the needs for fire insulation of steel structure. In extreme cases also higher classes are required. For buildings with more than 8 storeys and for very high fire load these higher classes are demanded.

SwedenFor the two lowest classes of buildings there are limited demands from R 15 to R 30. For storeys below basement the needs are higher.

For the toughest class the requirements are divided depending

on the fire load. With a fire load < 200 MJ/m2 the “normal” demand is R 60, in some cases also R90. When fire load goes up to 200 - 400 Mj/m2 the demands are raised to R 120 and in some cases R 180. For a load of fire above 400 MJ/m2 the needed class is R 240.

PolandIn Poland there are 5 classes of different buildings due to fire demands. The need for load bearing structure varies from none for the lowest class to 240 minutes for the class called “A”. These buildings have a fire load of more than 4000 MJ/m2. For the more “normal” buildings the demands varies between 60 and 120 minutes but also 30 minutes are in some cases enough to fulfil the requirements.

DenmarkIn Denmark the buildings are divided into 6 different groups which also depending on the usages of the building. It depends on if the building is occupied during day time or night time and what kind of activities that is taking place in it.

For the load bearing structure the demands vary from 30 to 120 minutes

depending on the usage classification and height above the ground.

NorwayNorway has chosen to keep 4 classes depending on fire hazard risk, from minor to very serious. Also the size and the design of the building are influencing the demands. Depending of if the load bearing structure is primary or secondary or placed the top storey basement the requirements vary between 30 and 120 minutes.

LithuaniaIn Lithuania the buildings are divided depending on their purpose, fire risk. There are five different classes from P1 with permanent or temporary residence to P5, other purpose which includes different industrial buildings, farming and other uses. Also the amount of fire load is divided into classes from 1-3 where 3 is below 600 MJ/m2 and 3 is above 1200 MJ/m2.

From this the demands are varying between R 45 and R 120 for load bearing structure.

The shape of the building and the amount of floors are two parameters influencing the demands for fire protection.


6

Why choose PAROC® Stone wool?

Stone wool is versatile non-combustible thermal insulationPAROC® Stone wool is the most versatile and commonly used thermal insulation material in many European countries.

PAROC® Stone wool uniquely combines excellent thermal and sound insulation properties with a highly fire retardant material. In addition to construction, stone wool is used in conditions that impose extremely demanding and versatile requirements on insulation such as the shipping industry and nuclear power plants.

Excellent fire resistance properties in constructionsPAROC® Stone wool is made of stone and can therefore be used as thermal insulation in applications with highly demanding fire specifications. Almost all types of mineral wool are classified as non-combustible material, but PAROC® Stone wool has an exceptionally high melting temperature of around 1000 °C, providing longer protection. Therefore, rather than adding to the fire load, PAROC® Stone wool offers an effective fire resistant thermal insulation solution. Most non-coated PAROC® Stone wool products are classified in best Euroclass A1.

Because of its unique fire properties PAROC® Stone wool can be utilized as fire insulation and as structural protective cladding. In structures insulated with PAROC® Stone wool, the spreading of any fire is retarded or prevented altogether.

The right products guarantee the best resultsOf all mineral wools stone wool possesses the best alkali resistance properties. This is particularly important when dealing with the cement and lime-based mortars associated with rendered facades.

Life-long insulation materialPAROC® Stone wool retains its thermal insulation properties for the entire lifetime of a building. PAROC® Stone wool is a chemically robust material with a strong resistance to organic oils, solvents and alkalis.

Retains its formPAROC® Stone wool does not expand or shrink, even as a result of dramatic changes in temperature or humidity. Therefore no cracks will form at the joints of the slabs and there is consequently no risk of heat leakage or moisture condensation.

Figure 1: The behavior of certain construction materials in a “standard” fire. A “standard fire” simulates the development of temperature of a fire in normal room space.

The PAROC® FireSAFE systemis independent of any earlier covering like varnish or paint. It does not demand cleaning of the surfaces aimed to protect.

PAROC PROTECTION

®

The insulation that also protects from fire and moisture

PAROC® PROTECTION is our concept for Nordic designed Stone wool, a material that has got superior properties when it comes to protection of fire and moisture. Living in a home with PAROC® Stone wool insulation provides increased protection against moisture. Stone wool namely does not absorb water particularly well and due to its high steam permeability, it dries quickly if exposed to water. PAROC® Stone wool insulation is also non-combustible and is therefore classified in best Euro Class A1.


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Does not absorb or accumulate moisturePAROC® Stone wool does not absorb or accumulate moisture in a capillary way, ensuring rapid evaporation in regular structures. A building insulated with PAROC® Stone wool stays dry, ensuring healthy internal air quality and the longevity of the building. Extensive research carried out in Finland by Tampere University of Technology (Microbial Growth in the Insulation of Concrete Panel Facades, 1999) and Turku University (Microbial contamination in rendered insulation layer of concrete walls, 1999) confirms that PAROC® Stone wool is a poor environment for microbe growth.

Efficient sound insulationDue to its porous fiber structure and high density, PAROC® Stone wool provides excellent insulation against external noise through walls and roofs as well as internal noise through partitions, intermediate floors and acoustic ceilings.

The PAROC® FireSAFE systemprotects also from corrosion by the water vapour permeability property of stone wool.

PAROC® Stone wool withstands very high temperatures. The image shows a test sample of the PAROC® UNS product before and after an EN ISO 1182 non-combustion test where the test sample is burned at a temperature of 750 °C. PAROC® UNS are in several of our markets developed into PAROC® eXtra™ with the same or better fire properties.

Due to a “breathing”, air-permeable structure, moisture evaporates quickly in correctly realized constructions.

Stone wool does not melt even in a fire. Thus a structure can withstand a fire considerably longer, which can critically improve the chance of rescue and limit damage.

SustainablePAROC® Stone wool is sustainable throughout its lifecycle. Stone wool is a proven, durable insulation material that provides significant energy saving, fire protection and excellent sound insulation properties for a multitude of applications. Stone wool does not contain any ingredients or chemicals that prevent or impede recycling.

Paroc – an expert in insulationAs one of the leading thermal insulation manufacturers, Paroc, together with the top researchers and institutions in the field, has developed considerable expertise in the thermal insulation sector.

PAROC® Stone wool and indoor air qualityPAROC® Stone wool is an extremely clean material and as such has been selected as the insulation material for houses built for people with allergies and respiratory illnesses. The Finnish Building Information Foundation and the Indoor Air Association both classify PAROC® Stone wool as the best M1 grade in the emission classifications as it does not pollute internal air.


8

COLUMNS AND BEAMS

Fire resistanceThe bigger volume of steel in relation to exposed area the better fire resistance it has. How quickly the steel structure is heated up at a specified fire exposure can simply be described as the relation between the fire exposed surface and the steel volume of the profile. This relation is called the section factor F/A.

A high section factor gives a quick temperature raise of the steel. This means that slim steel structures demands thicker insulation boards. See Figure 2.

When I profiles has a greater height than 450 mm the insulation shall be installed following the profile. At pictures below you can find the

Dimensioning of the insulation

formulas for different profiles and their positions in the building.

CalculationThe simplified dimension tool is based on a more advanced instruction from Assessment report 103203.22 from SINTEF NBL. The approximate method is built on the fact that the steel profile is fully used from statically

Table 1:

Insulation thickness at square RHS -profiles, fire from 4 sides, critical temperature 450 °C

Fire class

R 30 R 60 R 90 R 120

Thickness of steel mm

Thickness of PAROC® FPS 17

mm

Thickness of steelmm


mm



mm



mm

>4 20 >10 20 >14 20 12.0 40

8.0 20 12.0 25 10.0 50

6.3 25 8.0 - 10.0 30 8.0 60

5.0 30 6.3 50 6.3 –

4.0 30 5.0 50

Time

Temperature

Figure 2

High F/A

Low F/A

Alternative 1Use the table 1 and 2 to find the fire class and the needed thickness for the most common steel profiles.

point of view. Dimensioning can always be done due to the following tool with acceptable safety margins.

MethodsTests are made according to EN 13501-2 and ENV 13381-4 and calculations according to ENV 13381-4 Annex H.

The PAROC® FireSAFE systemhas a relatively low weight and minimizes the loading on the protected constructions. There is no need to consider the weight of PAROC® FPS 17 at all in the static load calculations.

h

b

F=2b+2h

b

F=2a+2b

a

h

b

F=b+2h

b

h

F=4b+2h

b

h

F=3b+2h


9

Table 2:

Insulation thickness for different beams, 3- and 4-sided fire exposure, critical temperature 450 °C

Fire class

R 30 R 60 R 90 R 120

Steel profile Thickness of PAROC® FPS 17

mm


mm


mm


mm

3-sidedfire exp.

4-sided fire exp.

3-sidedfire exp.

4-sided fire exp.

3-sidedfire exp.

4-sided fire exp.

3-sidedfire exp.

4-sided fire exp.

IPE 160 – 600 20 20 IPE 330-600 20 20 IPE 600 25 30 IPE 600 40 50

IPE 240-300 20 25 IPE 500 30 40 IPE 550 50 50

IPE 160-220 25 30 IPE 360-450 40 40 IPE 450-500 50 60

IPE 220-330 50 50 IPE 400 60 60

IPE 160-200 50 60 IPE 300-360 60 –

HE 100A – HE 600A 20 20 HEA 180-600 20 20 HEA 600 20 20 HEA 360-600 40 40

HEA 100-160 20 25 HEA 320-500 20 25 HEA 300-340 40 50

HEA 300 20 30 HEA 240-280 40 60

HEA 200-280 30 40 HEA 220 50 60

HEA 100-180 40 50 HEA 200 50 –

HEA 100-180 60 –

HE 100B – HE 600B 20 20 HEB 100-600 20 20 HEB 320-600 20 20 HEB 300-600 30 40

HEB 220-300 20 25 HEB 240-280 40 40

HEB 200 20 30 HEB 180-220 40 50

HEB140-180 25 40 HEB 160 40 60

HEB 120 30 40 HEB 120-140 50 60

HEB 100 40 50 HEB 100 60 –

HEA profile HEB profile HEM profile

a b c d e f

F/A (m–1)

F/A (m–1)

F/A (m–1)

F/A (m–1)

F/A (m–1)

F/A (m–1)

HE 100 A 184 138 HE 100 B 154 115 HE 100 M 85 65

HE 120 A 185 137 HE 120 B 141 106 HE 120 B 80 61

HE 140 A 174 129 HE 140 B 130 98 HE 140 M 76 58

HE 160 A 161 120 HE 160 B 118 89 HE 160 M 71 54

HE 180 A 155 115 HE 180 B 110 83 HE 180 M 68 52

HE 200 A 145 108 HE 200 B 103 77 HE 200 M 65 49

HE 220 A 134 100 HE 220 B 97 73 HE 220 M 62 47

HE 240 A 122 91 HE 240 B 91 68 HE 240 M 52 40

HE 260 A 118 88 HE 260 B 88 66 HE 260 M 51 39

HE 280 A 113 84 HE 280 B 85 64 HE 280 M 50 38

HE 300 A 105 78 HE 300 B 81 60 HE 300 M 43 33

HE 320 A 98 74 HE 320 B 77 58

HE 340 A 94 72 HE 340 B 75 57

HE 360 A 91 70 HE 360 B 73 57

HE 400 A 87 68 HE 400 B 71 56

HE 450 A 83 66 HE 450 B 69 55

HE 500 A 80 65 HE 500 B 67 55

HE 550 A 79 65 HE 550 B 67 55

HE 600 A 79 65 HE 600 B 67 56

HE 650 A 79 65 HE 650 B 66 56

IPE profile Rectangular RHS profile Square RHS profile

g h i j k l

F/A (m1)

F/A (m1)

DxB mm

Godstj. mm

F/A (m–1)

F/A (m–1)

DxB mm

Godstj. mm

F/A (m–1)

F/A (m–1)

IPE 80 330 270 100x50 3,2 313 274 40x40 3,2 313 258

IPE 100 300 247 4 250 221 4 250 211

IPE 120 279 230 100x60 3,6 278 238 60x60 3,2 313 249

IPE 140 259 215 5 200 175 4 250 203

IPE 160 241 200 120x60 3,6 278 242 80x90 3,6 278 220

IPE 180 226 188 5 200 178 5 200 161

IPE 200 211 176 120x80 5 200 169 100x100 5 200 159

IPE 220 198 165 8 125 110 8 125 103

IPE 240 184 153 150x100 5 200 167 120x120 5 200 157

IPE 270 176 147 8 125 108 8 125 101

IPE 300 167 139 160x80 5 200 175 150x150 6,3 159 125

IPE 330 156 131 8 125 113 12,5 80 66

IPE 360 146 122 200x100 5 200 173 180x180 6,3 159 124

IPE 400 137 116 10 100 90 12,5 80 65

IPE 450 130 110 250x150 6,3 159 134 200x200 6,3 159 124

IPE 500 121 104 12,5 80 70 12,5 80 65

IPE 550 113 98 300x200 6,3 159 131 250x250 6,3 159 123

IPE 600 105 91 12,5 80 68 12,5 80 64

300x300 10 100 78

12,5 80 63

a b c d e f g hi j k l

F/A R 30 R 60 R 90 R 120 R 150 R 180 R 21050 20 20 20 25 40 40 5060 20 20 20 30 40 50 6070 20 20 20 40 50 6080 20 20 25 40 5090 20 20 25 40 60

100 20 20 30 50110 20 20 40 50120 20 20 40 60130 20 20 40 60140 20 20 40 60150 20 20 50160 20 25 50170 20 25 50180 20 25 50190 20 25 50200 20 25 50210 20 30 60220 20 30 60230 20 30 60240 20 30 60250 20 30 60


10

Alternative 2Find the section factor F/A by using data for the steel profile due to the information from the steel supplier. In figure 3 the fire class and the needed thickness of insulation are to be found. For further steel temperatures see the appendix “Dimensioning of the insulation” to the approval ETA-08/0093.

Figure 3:

Insulation thickness for PAROC® FPS 17. Critical steel temperature 450 °C

Table 3:

F/A for the most usual profiles


11

Installation1. The insulation is fastened by welding of

steel pins (Ø 2, 8 mm) with washers (Ø 30 mm).

2. Pins on beams are fastened maximum 50 mm from the edges.

3. Pins on columns are fastened maximum 110 mm from the edges.

4. The maximum distance between faste-ners on columns is 400 mm.

5. For beams the maximum distance between fasteners is 300 mm.

6. When installing insulation on H or I profiles with a distances between flan-ges of more than 200 mm a butt-butt board is placed behind board joints.

7. The butt-butt board shall be 100 mm in width and of the same thickness as the main insulation.

8. When the distance between flanges is more than 300 mm a rear noggin is placed behind the butt-butt board, made from the main insulation thick-ness.

9. Both slabs are cut with over dimension so they fit tight. No glue or equal is needed.

10. All edges are fully covered by the connecting slab.

11. At installation on beams the slabs on the sides shall cover the bottom layer slab and not vice versa.

12. No openings are allowed.


12

In built columns with square profile

Table 4:

Fire resistance: R 90 and Critical steel temperature 450 °CThickness of PAROC® FPS 17;

Steel thickness, mm

Thickness of PAROC® FPS 17, mm

1x13 mm plaster board,(1 layer on both sides)

2x13 mm plaster board,(2 layers on both sides)

5.0 40 25

6.3 40 25

8.0 30 20

10.0 25 20

Fire resistanceA usual way of building is to place a square profile in the wall. By this method the thickness of fire insulation can be reduced because the gypsum board contributes to the fire protection as it is fire rated. This has been calculated by SINTEF NBL, and as a result we can reduce thicknesses of the PAROC® FPS 17 in some configurations.

FastenersFasteners are placed according to instructions on page 11.

Fire insulation of steel in external plaster board wall

Fire insulation of steel in partitions

It is sometimes possible to insulate columns in a façade at three sides. This can only be done in R 60 with two layers of plaster board on the inside. On the outer side it must be, at least, 9 mm plaster board installed. The steel must be placed free from openings like windows and unclassified doors etc.

At fire insulation of steel installed into partitions the insulation thickness can be reduced due to the fact that the plaster board also bring fire resistance.

For class R 60 this is not as interesting as it is allowed to use PAROC® FPS 17, 20 mm on RHS

The façade must as well be classified as non combustible. When RHS -profiles, at a critical steel temperature of 400 - 600 °C, the class R 60, and thicknesses of the steel down to 5 mm are used the PAROC® FPS 17, 20 mm can be used 3-sided.

profiles down to 5 mm steel thickness. The plaster board is not needed to be placed in connection to the fire insulation although the illustration shows this. For the fire class R 90 the following table can be used:


13

HSQ-beams

Fire resistanceHSQ- profiles are often used together with concrete elements. The dimensions of the visible flange are the input data when deciding about needed fire protection. The construction is tested with 50 mm overlapping insulation on both sides, to simplify the installation.

CalculationThe way of dimensioning is taken from the the assessment report 103203.56 from SINTEF NBL as.

Input data:• Thickness of the flange at the

current HSQ-profile

Decide the fire class and the critical steel temperature for the construction.

Find the needed thickness in table 5.

The PAROC® FireSAFE systemwith stone wool slabs are chemically neutral in contact to metal surfaces and structures applied in the system.

The PAROC® FireSAFE systemthe stone wool material is also used in many other sensitive conditions and constructions such as marine applications, insulation of atomic engineering or equal.

The PAROC® FireSAFE systemis possible to use under a wide range of conditions concerning temperature and moisture.

Table 5:

Thickness in mm of PAROC® FPS 17 to reach respectively fire classification:

tsmm

Ai/Vs (mm-1)

R 60 R 90 R 120

450 ºC 500 ºC 450 ºC 500 ºC 450 ºC 500 ºC

HSQ 1 15 67 20 20 20 20 40 25

HSQ 2 10 100 20 20 40 25 60 40

max 400 mm

max 50 mm


14

Fire resistanceIn some buildings there is a need to raise the fire class for a concrete deck, either in an existing one or for a new building. Normally the covering of the reinforcement is dimensioned in the concrete. This protection can be increased by putting a layer of PAROC® FPS 17 underneath.

CalculationThe background for dimensioning is to be found in the assessment report 103203.55 from SINTEF NBL as.

When using a 20 mm board of PAROC® FPS 17 the concrete deck can stand a fire up to 120 minutes.

DimensioningWhen the insulation is installed as in the figure can 20 mm PAROC® FPS 17 be used for required fire resistance up to 120 minutes, where the concrete cover of the reinforcement steel bars are inadequate. It is prerequisite that the slab in other respects is designed according to relevant construction standard. The insulation is fastened by Würth Expanding nail and a washer 8,4 x 30 x 1,5 mm or equal.

Fire insulation of concrete decks

The PAROC® FireSAFE systemdoes not bring any environmental pollution in the working space during installation.

The PAROC® FireSAFE systemhas a long life time, at least 50 years or equal to the life time of the building. No special maintenance is needed.

max 300 mm

max 300 m

m

max 50 mm


15

Fire resistanceSometimes there is a need to protect flat roofs on a steel deck from fire from the inside. This can be done by adding a layer of insulation underneath the profiled steel deck. The insulation is fastened by welding.

CalculationThe background for dimensioning is to be found in the assessment report 103203.58 from SINTEF NBL as.

The needed thickness of insulation is found in the table 6 depending on the needed fire class for the structure.

Fire insulation of steel decks

Table 6:

Thickness of PAROC® FPS 17 needed to meet classification R 30 and R 60

Steel thicknessmm

Steel temperature ºC

450 ºC 500 ºC 550 ºC 600 ºC

R 30 R 60 R 30 R 60 R 30 R 60 R 30 R 60

0,6 40 - 40 - 30 60 25 60

0,65 40 - 40 - 30 60 25 60

0,72 40 - 30 60 25 60 25 60

0,85 30 60 30 60 25 60 20 50

1,00 30 60 25 60 20 50 20 50

1,25 25 60 20 50 20 50 20 40

1,50 20 50 20 50 20 40 20 40

2,0 20 40 20 40 20 30 20 25

2,5 20 40 20 30 20 25 20 20

3,0 20 25 20 25 20 20 20 20

300 – 500 mm

max 50 mm


16

System components

The PAROC® FireSAFE systemcomponents are possible to store for a long period of time in dry conditions.

The PAROC® FireSAFE systemadmits conformity to high aesthetic requirements to the appearance of the fire protected surfaces.

Product data PAROC® FPS 17

Stone wool slabs PAROC® FPS 17Stone wool slabs PAROC® FPS 17 are made by melting basalt rocks at a temperature of about 1500 °C. This temperature at production gives the fibre a stable structure without melting under temperatures up to 1000 °C. The ability to stand high temperatures and the non-shrinkable properties are provided with its unique structure; the wool fibres are randomly located in horizontal and vertical direction in different angels between each other.

It is possible to produce the stone wool slabs with a glass fibre tissue covering without influencing the reaction to fire properties. The covering allows putting finishing-decorative facing after installation of the system.

The pins for welding are made of steel with a covering of copper making the welding possible. The diameter of the steel is about 2, 8 mm and it has a washer of 30 mm fastened. Alternatively the installation can be done by screwing, see page 19.

ApplicationEfficient fire protection slab especially for steel structures and air and smoke chimney fire protection as well as fire class door insulation.

Property In accordance with

Width x Length EN 822600 x 1200 mm1200 x 1800 mm

Thickness EN 82320 - 120 mmTolerances: T5; EN 13 162

Fire classification EN 13 501-1A1

Thermal conductivity EN 13 162λD = 0, 038 W/mK

Package typePlastic covered packages on a pallet or loose slabs on a pallet.


17


18

General: Mounting I-profiles >200 mm

Installation of PAROC® FireSAFE system

Welding

The slab should cover the end of the slab it is installed against. No steel shall be visible as shown in the schematic figures below.

Follow the instructions at the welding equipment to install the pins properly.

Foresee that the pins are properly fastened. The pins should be possible to bend aside (without insulation) and stay fastened. The same method is used for welding to steel sheet in roofs.

The insulation is fixed using steel pin/washers. The pin is an Ø 2, 8 mm and has a fixed washer at Ø 30.0 mm.

The pin used is chosen 2-3 mm greater than the insulation thickness.

The welding is done by Capacitor Discharge (CD) equipment - or equal.

The pin is a copper covered steel pin with the washer included.

1. Cut the installation pieces with a width of 100 mm and a length suitable to the profile with 2-3 mm extra length. Use always the same thickness of slab as used for the current profile.

2. Press the pieces of insulation between the flanges behind a coming joint.

When the beam or column has a height over 300 mm the piece of insulation is completed with across placed piece against the web.

See instructions on page 11.


19

Alternative installation method

The PAROC® FireSAFE systemthe stone wool material also brings sound reducing properties beside the thermal and fire resistance functions.

The PAROC® FireSAFE systemis ecologically safe for the environment. The PAROC® Stone wool slabs has the highest grade, M1, regarding environmental pollution.

Max 200

Max 150

25

100

300

Max 600

>400

>300

Max 200

100

25

100

max 150

Max 600

≤ 400

≤ 300

The ETA approval allows also the steel structure fire protection to be installed by screwing.

ScrewingThe insulation is fixed using special screws, PAROC® XFS 001 Fire Spring. The first stage of installation is to push 100 mm wide pieces of PAROC® FPS 17 between the flanges of the steel profile, with a maximum centre-to centre spacing of 600 mm. The thickness of the slab must be at least 40 mm. If the height of the beam is greater than 400 mm a piece of slab must be placed edge-on between the insulation and web to provide additional support. If the breadth is greater than 300 mm then 2, 8 mm pins must be welded to the centre line of the flange at 300 mm intervals.

Cut the insulation so that it is equal to the height of the beam, plus the thickness of the flange insulation. At least two bolts at intervals of 200 mm or less. The spacing between the bolts is shown in the figure below. It is recommended that the bolts length is twice the insulation thickness.

Insulation should be fixed to the top of RHS profiles by butt welding. The steel pins are fixed at intervals of less than 400 mm and less than 110 mm from joints in the insulation.

Installation of PAROC® FPS 17 onto concreteWhen installing the board to concrete an expanding nail is used. The nail is 6x60 mm for fastening of 20 mm board, and there is a hole drilled with a diameter of 6 mm. The deep of the drilling is 40 mm. The expanding nail is fastened together with a steel washer 8,5 x 30 x 1,5 mm by a hammer. For other thicknesses the length of fasteners will be 40 mm longer than the thickness of the slab.

2060BIEN0112

PAROC GROUPP.O.Box 47FI-00621 Helsinki, FinlandPhone +358 46 876 8000 www.paroc.com

A M E M B E R O F P A R O C G R O U P

The information in this brochure describes the conditions and technical properties of the disclosed products, valid at the time of publication of this document and until replaced by the next printed or digital version. The latest version of this brochure is always available on Paroc web site.Our information material presents applications for which the functions and technical properties of our products have been approved. However, the information does not mean a commercial guarantee, since we do not have full control of third party components used in the application or the installation.We cannot warrant the suitability of our products if used in an area which is not provided in our information material.As a result of constant further development of our products we reserve the right to make alterations to our information material.PAROC and red and white stripes are registered trademarks of Paroc Oy Ab. © Paroc Group 2012

Paroc Group is one of the leading manufacturers of mineral wool insulation products and solutions in Europe. PAROC® products and solutions include building insulation, technical insulation, marine insulation, structural stone wool sandwich panels and acoustics products. Paroc has production facilities in Finland, Sweden, Lithuania and Poland, and sales and representative offi ces in 13 countries across Europe.

Building Insulation produces a wide range of products and solutions for all traditional building insulation. The building insulation is mainly used for thermal, fi re and sound insulation of exterior walls, roofs, fl oors, basements, intermediate fl oors and partitions.

Sound absorbing ceilings and wall panels for interior acoustic control, as well as industrial noise control products, are available in the range.

Technical Insulation is used for thermal, fi re and sound insulation in building techniques, industrial processes and pipe work, industrial equipment and ship structures.

PAROC® fire proof panels are lightweight steel-faced panels with a core material of stone wool.PAROC® panels are used for façades, partition walls and ceilings in public, commercial and industrial buildings.

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