name of the building       identification of the compartment           variant 2
Calculation of the Protection Level D Variant 2 can be used for an alternative proposition, e.g. improving the fire resistance
Schuine rand: Go to START
DATA Symbol Unit  D -REF CHANGING DATA CHANGED CHANGE ? Variant 2
Comments[1]
WATER SUPPLY Factor [2]        
Water storage type w1   0 1. Water storage for general use, automatically filled  0   0 no 0  
Water storage capacity   m³ 158 Estimated capacity of water storage available for fire fighting 160 m³        
    m³ 175 Required Capacity for fire extinguishment[3] 525 m³      
  w2   1[4] Available capacity as % of required 30% 4 4[5] no 1  
Distribution network                   
Nominal diameter of main water piping   mm 34,3 DN100 (4") flow capacity 676,9        
Looped network ?     68,6 no total m³/h 676,9        
  w3   2 Distribution network supply capacity ADEQUATE   0 no 2  
Hydrant hose connections[6]   m 180 Building perimeter ( = 2 * (b+l))  180 m      
    # 4 Number of available 2.5" (70) connections[7] 4          
    # 0 Number of available 3" (80) connections[8] 0          
    # 0 Number of available 4" (110) connections[9] 0          
    # 0 Equivalent number of 2.5" (70) connections 4   4    
  w4   0 Average distance between connection on the building perimeter 45   0 no 0  
Static pressure[10]   m  4 Floor level height  H+ or H- + ceiling height 2        
      3,9 Required network static pressure 3,7 bar      
  w5 bar 5 Available static pressure in the distribution network 0 bar 3 no 0  
  3 w = 7 3
      0,86 WATER SUPPLY Factor  W = 0,70   0,86
Normal protection Factor [11]        
Discovery       There is a watch service or continuous human presence   yes   0      
warning       There is also a (manually operated) warning system  yes   0      
Call to fire brigade       Guaranteed transmission to the fire service  yes   0      
Occupants alarm       There is also an alarm to the occupants  yes   0      
Discovery and alarm system n1   0 Modified discovery and alarm system     0 no 0  
Extinguishers n2   0 1. Extinguishers adequate (type and quantity) 0   0 no 0  
Fire hose stations n3   0 1. Adequate number and location 0   0 no 0  
Fire brigade arrival n4   2 2. Arrival after 10 to 15 min 2   2 no 2  
Occupants' training n5   2 2. Only a limited number of persons trained 2   2 no 2  
  4 n = 4 4
      0,81 Normal protection Factor  N = 0,81   0,81
Special protection factor   
Automatic fire detection s1     Guaranteed transmission of the detection signal to the fire brigade directly  / through control room[12] yes          
      0 3. by smoke or flame detectors  8   8      
      0 Electronic supervised system - fault monitoring yes   2      
      0 Individual identification of small fire zones (detector, room)  yes   2      
Improved water supply s2   0 Inexhaustible water supplies (4 times adequate)[13] no   0      
  s3   0 Reserved for fire fighting only no   0      
Control of water supply s4   0 Under control of building user (independent) no   0      
Energy supply s5   0   Single flow/pressure source[14] 0   0      
Sprinkler protection s6   0   None 0   0      
Other automatic s7   0 Other automatic extinguishing systems (CO2, foam, inert gas) no   0      
Responding fire station s8   8 1. Full time station 24h/24  7d/7 8   8      
Industrial fire brigade s9   0   None 0   0      
      8 MODIFIED SPECIAL PROTECTION ???? s = 20 no 8  
      1,48 Special protection factor  S = 2,65   1,48
Fire resistance factor   
Structural /compartments fs min. 30 Average fire resistance (REI) of the structural and separating elements: 60 min. 60      
Outside walls ff min. 30 Average fire resistance of the outside walls ( E = flame tightness) 60 min. 60      
Ceiling or roof fd min. 30 Average fire resistance of the ceiling or the roof (RE) 60 min. 60      
Interior walls[15] fw min. 0 Average fire resistance of interior walls (EI) 0 min. 0      
      26,25 MODIFIED calculated weighed average for fire resistance f = 52,5 yes 52,5  
      1,30 MODIFIED Initial structural fire resistance (stability) Fo = 1,57 no 1,30  
      1,24 Fire resistance factor [16] F = 1,44   1,49
Escape protection factor   
Automatic fire detection  u1     Some data are already entered at factor S          
      0 3. by smoke or flame detectors  8 see at S 8    
      0 Electronic supervised system - fault monitoring yes see at S 2    
      0 Individual identification of small fire zones (detector, room)  yes see at S 2    
      0 Partial detection system, only in areas critical for people safety[17] no   0      
      2 No more than 300 persons to be warned simultaneously yes   2      
      0 Evacuation alarm with spoken messages by voice communication system no   0      
Subcompartments u2   0   None 0   0      
Exit path protection u3   0  No stairs used for exit 0   0      
Horizontal exits     0   No horizontal exits 0   0      
Signage and illumination     4 Exit paths completely marked and illuminated yes   4      
Sprinklers? u4   0   None 0   0      
Other automatic system u5   0 Other automatic extinguishing systems (CO2, foam, inert gas) no see at S 0    
Smoke vents actuation u6   0 Smoke venting actuated by automatic detection no   0      
Responding fire station u7   8 1. Full time station 24h/24  7d/7 8 see at S 8    
Industrial fire brigade u8   0   None 0 see at S 0    
      14 MODIFIED ESCAPE PROTECTION ???? u = 26 no 14  
      1,98 Escape protection factor  U = 3,56   1,98
Salvage factor                 
Compartmentation y1   0   None 0   0    
PHYSICAL PROTECTION y2                
Detection     0 Partial detection system, only in areas critical for business continuity[18] no   0      
Sprinkler     0 Local sprinkler protection for critical equipment[19] no   0      
Other systems     0 Other LOCAL automatic extinguishing systems (CO2, foam, inert gas) no   0      
ORGANISATION y3                
FINANCIAL     2 Safeguarded financial and economical data[20] yes   2      
EQUIPMENT     4 Easy access to spare parts and replacements yes   4      
REPAIRS     2 Repairs possible with minimal help yes   2      
RELOCATION     0 Immediate transfer of activities possible no   0      
COOPERATION     0 Written agreements for relocation exist no   0      
PRODUCTION CENTRES     0 Production capacity available at more than one location no   0      
      8 MODIFIED ACTIVITIES PROTECTION ???? y = 8 no 8  
      1,48 Salvage factor  Y = 1,48   1,48
Protection levels D  
        Protection levels for:            
WATER SUPPLY Factor  W 0,86    Property D 1,53    
Normal protection Factor  N 0,81    Occupants D1 1,61   Date of this analysis
Special protection factor  S 1,48    Activities  D2 1,52    
Fire resistance factor  F 1,49     date(s) of the analysis
Escape protection factor  U 1,98      
Salvage factor  Y 1,48                
[1]
Motivate your input here.
[2]
Factor w is defined as the sum of (unfavourable) factors wi for which the values can be found in the next table.
[3]
The required quantity in m³ is equal to the total fire load density in MJ/m² divided by 4.  A smaller quantity will can reduce the efficiency of fire fighting operations.
[4]
Does not apply when there is no storage available

[5]
Does not apply when there is no storage available

[6]
  An adequate number of fire hydrants is required. One 2.5" (70) hose connection is necessary per 50 m of building perimeter of the building. One 3" connection equals two 2.5"(70); one 4"(100) connection  equals three 2.5" (70).
[7]
standard DIA 100 pillar hydrants have usually 2 x 2.5" hose connections. Wet and dry riser outlets are also to be included.
[8]
can be found on DN80 underground  hydrants
[9]
can be found on DIA 100 underground hydrants.
[10]
The static pressure of the water distribution system, expressed in meter water column should  be greater than  the height of the building + 35 m
[11]
Normal protection means the chain: discovery - alarm - manual intervention
[12]
Automatic detection systems accelerate the discovery of a fire and the fire brigade intervention. They can only be considered if there is a guaranteed connection to the fire brigade, which will immediately react to the signal.
[13]
Rivers, lakes and any other water storage that can guarantee 4 or more times the quantity of water needed are considered as inexhaustible.
[14]
Water supplies, which have double energy supplies for maintaining the water pressure, are highly reliable.
[15]
Interior walls which subdivide the compartment in fire areas, none of them should be more than 25 % of the compartment, and no area should be larger than 1000 m²
[16]
Considering the value of S
[17]
Only applicable when there is no compartment wide detection
[18]
only applicable if there is no compartment wide detection. Can be other areas than for peoples' safety
[19]
Only applicable if there is no compartment wide sprinkler protection
[20]
E.g. by back-ups, physical separation, doubles at other places