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  • Users: saliba11
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  1. saliba11

    air leakage velocity calculation

    I have simple question which I couldn't figure out. Let say, there is 50 Pa pressure difference continuously between a closed room and outside which is in atmospheric condition. The room pressure is bigger than the outside. When opening the door (Area of door is 3 m2) of room to outside, what...
  2. saliba11

    concrete pipe software

    Hi all, is there any special software for designing of concrete piping. which gives horizontal laying length, gradient, curve radius, deflection angle, opening length as a result automatically. kind regards saliba
  3. saliba11

    span for vertical piping

    Hello all, What shall be the criterias for maximum allowable span for vertical piping. Is it same for horizontal piping criterias. thanks in advance saliba
  4. saliba11

    Leakage monitoring system

    We have underground preinsulated heating and chilled water underground piping, and installed leakage monitoring system for the system. Beside, customer asks for lekage monitoring system for hot water drainage underground piping. do we really need this system fordrainage piping. could you...
  5. saliba11

    heat dissp. of electric cables

    what is the heat dissipation of electric cable having the size 1000 watt. Does it neglectd in HVAC calculations or not. your kind response is appreciated. best regards
  6. saliba11

    UNDERGROUND OXYGEN LINE

    COULD ANYONE GIVE ME ANY INFORMATION ABOUT THE DESIGN OF UNDERGROUND PIPELINE CONTAINING OXYGEN USED FOR WELDING IN A SHIPYARD. Q=1000 M3/H. OP. PRESSURE = 15 BAR. WHAT KIND OF A MATERIAL TO USE. CAN CARBON STEEL PIPE BE USED. IS THERE ANY THRUST BLOCK NEEDED. PIPELINE IS ABOUT 10 KM...
  7. saliba11

    holiday inspection

    Hello all, we have cs, 10", preinsulated, underground piping. It is a hot water drainage pipe. Is it required holiday testing before backfilling. For drainage piping is this holiday testing mandatory thanks in advance saliba
  8. saliba11

    holiday inspection

    Hello all, we have cs, 10", preinsulated, underground piping. It is a hot water drainage pipe. Is it required holiday testing before backfilling. For drainage piping is this holiday testing mandatory thanks in advance saliba
  9. saliba11

    crude oil Tank Vent

    We have dia: 92 m, heigth:16 m floating roof crude oil storage tank. Oil has escaped from the vents (located on roof) during filling and emptying operation of the tank. At first oil starts to pass from the vents, then after oil passing stops. Could anyone indicate a reason for this. Have...
  10. saliba11

    direct buried pipe expansion

    Do we need an expansion loop or something else for an insulated direct buried underground Carbon Steel piping. 1 meter under tight soil. Operating temperature is about 100 C. regards saliba
  11. saliba11

    Buried Piping expansion

    Do we need an expansion loop or something else for an insulated direct buried underground CS piping. Operating temperature is about 100 C. regards saliba
  12. saliba11

    viscosity calculation

    using ASTM D 341, If I had two values of viscosities at two different temperatures I could fit those values in the above equation and found the fuel constants A and B and then interpolate to find the value of viscosity at a different temperature. Presently, I know the viscosity of a Heavy Fuel...
  13. saliba11

    buried valve

    we have butterfly and gate valves on our main fire fighting ring, which is burried 2.5 meter underground HDPE. Can we place buried valves without using valve pits. can you inform me about the general procedure of placing buried valves? thanks regards
  14. saliba11

    hydraulic software

    can anyone help me about comparison of softwares "PIPENET" and " FLOWMASTER". for transient analysis and fire network analysis.
  15. saliba11

    wall strength for pipe carrying

    Hello all, I have 8, 10 and 14 inch pipe at 80 C. we are planning to carry these pipes on the dike wall. Each have a connection to process liquid tanks. Is this a right application. Is there any constraint for carrying pipe on the wall. is there any calculation method for wall strength...
  16. saliba11

    pipes on the dike wall

    Hello all, I have 8, 10 and 14 inch pipe at 80 C. we are planning to carry these pipes on the dike wall. Each have a connection to process liquid tanks. Is this a right application. Is there any constraint for carrying pipe on the walll. thanksin advance best regards
  17. saliba11

    FRP pipe allowable stress

    Hello all, I am analysing a 30" fire water FRP pipe according to Asme B31.3 using Caesar II. 31.3 appendix A does not contain allowable stress value for FRP pipe. I need to have it to compare with the code stress. Does anyone know how can I find the allowable stress values for FRP pipe...
  18. saliba11

    thrust block calculation

    Hello all, we have a underground FRP fire fighting pipe having design pressure of 25 bars. I modelled the piping with caesar. For to size thrust blocks at bends, and connections I need to calculate the loads on the thrust block. How shall I treat the thrust block points in Ceasar. Should...
  19. saliba11

    fire pump critical speed

    hello all, we have a 20" suction, 16" discharge 5400 gpm fire pump. Is there any concept like "criticial speed" for suction and discharge lines.? Does any code indicate a maximum speed not to exceed in these lines. thanks.. saliba

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