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. sprinkler protection
 
 
DATA Symbool Unit D -REF
DATA VARIANT 2 NEW VALUES VARIANT 2 Comments[1]
Water supply factor[2]                
Water storage type w1   0 Unchanged   0  
Water storage capacity   m 150 Estimated capacity of water storage available for fire fighting REF 2000 150  
    m 150 Required Capacity for fire extinguishment[3] 150 m    
  w2   0[4] Available capacity as % of required 100% 0  
Distribution network              
Nominal diameter of main water piping   mm 676,9 DIA350 (14") flow 676,9  
Looped network ?     1353,8 OK REF 1353,8  
  w3   0 Distribution network supply capacity ADEQUATE   0  
Hydrant hose connections[5]   m   Building perimeter ( = 2 * (b+l)) m 700,00  
    # 0 Number of available 2.5" (70) connections[6] 8      
    # 0 Number of available 3" (80) connections[7] 0      
    # 6 Number of available 4" (110) connections[8] 0      
      18 Equivalent number of 2.5" (70) connections[9] 8 REF 18  
  w4   0 Average distance between connection on the building perimeter 38,89 m 0  
Static pressure[10]   m 12 Floor level height H+ or H- + ceiling height 12      
    bar 4,7 Required network static pressure 4,7 bar    
  w5 bar 3 Available static pressure in the distribution network 2 REF 3  
  3 w = 3  
      0,86 Water supply factor W = 0,86  
Normal protection Factor[11]                
Discovery     0 Continuous human presence , watchman service REF   0  
warning     0 There is also a (manually operated) warning system REF   0  
Call to fire brigade     0 Guaranteed transmission to the fire service REF   0  
Occupants alarm     0 There is also an alarm to the occupants REF   0  
Extinguishers n2   0 Unchanged 0   0  
Fire hose stations[12] n3   0 Unchanged 0   0  
Fire brigade arrival n4   2 Unchanged 2   2  
Occupants' training n5   2 Unchanged 2   2  
  4 n = 4  
      0,81 Normal protection Factor N = 0,81  
Special protection factor                
Automatic fire detection s1   OK Guaranteed transmission of the detection signal to the fire brigade directly / through control room[13] REF OK  
      0 1. Automatic detection by sprinklers + flow or pressure switch 4   4  
      0 Electronic supervised system - fault monitoring REF   0  
      0 Individual identification of small fire zones (detector, room) REF   0  
Improved water supply s2   0 Inexhaustible water supplies (4 times adequate)[14] REF   0  
  s3   0 Reserved for fire fighting only OK   2  
Control of water supply s4   0 Under control of building user (independent) OK   2  
Pressure / Flow energy source s5   0 Unchanged[15]     0  
Sprinkler protection s6   0 2. Sprinklers with one independent water supply   14  
Other automatic s7   0 Unchanged 0 0  
Responding fire station s8   4 Unchanged 4   4  
Industrial fire brigade s9   0 Unchanged 0   0  
    4 SPECIAL PROTECTION FOR VARIANT 2 s = 26  
      1,22 Special protection factor S = 3,56  
Fire resistance factor                
Structural /compartments fs min. 15 Average fire resistance (REI) of the structural and separating elements: 60 REF 15  
Outside walls ff min. 15 Average fire resistance of the outside walls ( E = flame tightness) 60 REF 15  
Ceiling or roof fd min. 15 Average fire resistance of the ceiling or the roof (RE) 60 REF 15  
Interior walls[16] fw min. 0 Average fire resistance of interior walls (EI) 0 REF 0  
      13,125 Calculated weighed average for fire resistance f   13,125  
      1,15 Initial structural fire resistance (stability) Fo = 1,15  
      1,12 Fire resistance factor[17] F = 1,06  
Escape protection factor                
Automatic fire detection u1     Some data are already entered at factor S        
      0 1. Automatic detection by sprinklers + flow or pressure switch 4 see at S 4  
      0 Electronic supervised system - fault monitoring REF see at S 0  
      0 Individual identification of small fire zones (detector, room) REF see at S 0  
      0 Partial detection system, only in areas critical for people safety[18] REF   0  
      2 No more than 300 persons to be warned simultaneously REF   2  
      0 Evacuation alarm with spoken messages by voice communication system REF   0  
Subcompartments u2   0 Unchanged 0   0  
Exit path protection u3   0 Unchanged 0   0  
Horizontal exits     0 Unchanged 0   0  
Signage and illumination     4 Exit paths completely marked and illuminated REF   4  
Sprinklers? u4   0 Unchanged 0   0  
Other automatic system u5   0 Unchanged 0 see at S 0  
Smoke vents actuation u6   0 Smoke venting actuated by automatic detection REF   0  
Responding fire station u7   4 Unchanged 4 see at S 4  
Industrial fire brigade u8   0 Unchanged 0 see at S 0  
    10 ESCAPE PROTECTION FOR VARIANT 2 u = 14  
      1,63 Escape protection factor U = 1,98  
Salvage factor                
Compartmentation y1   0 Unchanged 0   0  
PHYSICAL PROTECTION y2              
Detection     0 Partial detection system, only in areas critical for business continuity[19] REF   0  
Sprinkler     0 Local sprinkler protection for critical equipment[20] REF   0  
Other systems     0 Other LOCAL automatic extinguishing systems (CO2, foam, inert gas) REF   0  
ORGANISATION y3            
FINANCIAL     2 Safeguarded financial and economical data[21] REF   2  
EQUIPMENT     4 Easy access to spare parts and replacements REF   4  
REPAIRS     2 Repairs possible with minimal help REF   2  
RELOCATION     0 Immediate transfer of activities possible REF   0  
COOPERATION     0 Written agreements for relocation exist REF   0  
PRODUCTION CENTRES     0 Production capacity available at more than one location REF   0  
    8 ACTIVITY PROTECTION FOR VARIANT 2 y = 8  
      1,48 Salvage factor Y = 1,48  
Protection Levels D                
        Protection levels for:        
Water supply factor W 0,86   Property D 2,63  
Normal protection Factor N 0,81   Occupants D1 1,61 Date of this analysis
Special protection factor S 3,56   Activities D2 3,67  
Fire resistance factor F 1,06   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 m is equal to the total fire load density in MJ/m 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]
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).
[6]
standard DIA 100 pillar hydrants have usually 2 x 2.5" hose connections. Wet and dry riser outlets are also to be included.
[7]
can be found on DN80 underground hydrants
[8]
can be found on DIA 100 underground hydrants.
[9]
enter at least 1 connection !
[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]
Adequate: means that each point of the compartment can be reached with at least on water jet from a hose reel with sufficient water flow to fight a beginning fire.
[13]
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.
[14]
Rivers, lakes and any other water storage that can guarantee 4 or more times the quantity of water needed are considered as inexhaustible.
[15]
Water supplies, which have double energy supplies for maintaining the water pressure, are highly reliable.
[16]
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 m
[17]
Considering the value of S
[18]
Only applicable when there is no compartment wide detection
[19]
only applicable if there is no compartment wide detection. Can be other areas than for peoples' safety
[20]
Only applicable if there is no compartment wide sprinkler protection
[21]
E.g. by back-ups, physical separation, doubles at other places