I need to design a LPG system for a high rise bldg. The owner request that any apartment use gas meter. Its my first time design a LPG with gas meter in each apartment. The building has 90 floor story, each story has 3mts high. Could you help me with a diagram for the riser including the...
Wareagle, thank for your response, I verified this column and i only found conductor with "W" rating. The reason of my question is that the owner want to use cable THHN this cable is less expensive that XHHW. I think that the riser is dry location so the "W" rating is not necesary. Please...
I have the following doubt. A office Bldg. have a XTRM (utility owner) that feed a MDP, i understand that the service entrace conductor need to be XHHW (wet location) inside conduit. But what happened between the MDP and the Meter Module, which type of cable I need to specify, each Meter...
Thank you bimr, I am using the Figure 7.2 "Drainage Fixture Units for Fixtures and Groups and Figure 7.6 Building Drains and Sewers. Both Figures from Plumbing Codes Handbook 2000.
By the way the sanitary civil engineer that design the utility sewer line, What kind of concept do they use to...
I need to design a sanitary line, I am using the building drains and sewers to select the maximum number of drainage fixture units connected to any portion of the building on the building sewer. In this moment i am design a office building with 2400 drainage fixture units to 1/16 inch slope per...
The specifications request Cast-Iron ASTM-A126, But the manufacturer uses "Cast-Iron ASMT-A48". I verified the ASTM summary for both specifications and found that the difference is that the A48 is Standard Specification for Gray Iron Castings as for A126 is Standard Specification for Gray...
WE NEED TO INCREASE THE CFM TOTAL THROUGH THE COIL OF DX SYSTEM, THE CAPACITY OF THE EQUIPMENT IS 20 TONS, THE NOMINAL FLOW IS 8000 CFM, BUT WE NEED TO GET MORE CAPACITY OF THIS EQUIPMENT, THEREFORE WE INCREASE THE FLOW TO 12,500 CFM, BUT THE PRESSURE OF THE EQUIPMENT ARE WRONG, PER EXAMPLE...
I NEED TO KNOW, THE PRESSURE RELATIONS BETWEEN THE CORRIDORS AND THE DEPARTMENT STORES IN A MALL CENTERS REQUIEST IT IS. SPECIFICALLY THE POSITIVE OR NEGATIVE THE CORRIDORS
Are you using a specific pressurisation unit to serve the chilled water or are you using the mains site water (boosted to feed toilets etc). We are using the mains site water.
A dedicated feed to the chilled water can be set to give you the design pressure. Do you have an expansion vessel or a...
thanks friartuck, but we have booster system to increase the pressure installed in the building, to elevate the pressure to 150 psig, our question is, the following:
we only need to change the setting of the safety device, per example: pressure regulation to 90 psi and relief to 100 psi,it is...
I HAVE PROBLEM WITH THE MAKE UP FOR THE CHILLED WATER PIPE. WE INSTALLED AIR CONDITIONING FOR A 15 FLOOR BUILDING, THE CHILLED PLANT IS LOCATED IN THE GROUND FLOOR ALSO THE MAKE UP. THE RELIEF VALVE ARE ACTUATED ALL TIME. THIS VALVE IS SETTING TO 20 PSI, ALSO THE REGULATING VALVE IS SETTING...
WE HAVE A STEEL ROOF WITHOUT INSULATION, WE NEED TO DECREASE THE HEAT LOAD TO THE ROOM, WE CAN NOT INSTALL INSULATION BELOW ROOF, WE THINK THAT THE HEAT TRANSFER WILL DECREASE WITH THE USE OF ALUMINUM FOIL ABOVE STEEL ROOF. WE VERIFY THE TABLE 3.3 "SURFACE RESISTANCE OF AIR" WE HAVE A STEEL...
hello IRstuff:
the duct is clean and the leaks are little.
the condenser is clean
the installation have 1 years.
the A/C charge is complete.
the systems never work right
the fan was selected with external estatic pressure to be 0.6 inchs of water.
Any questions more please contact me
THE THERMOSTATA ARE LOCATED IN THE RETURN DUCT, AND THE THERMOSTAT SET IS 60°F, WE DONT USE STRATIFICATION, BECAUSE THE SUPPLY AND RETURN DUCT ARE HIGH. IN PEAK LOAD ALL COMPRESSOR ARE RUNNING, SO THE RETURN TEMPERATURE IN 80°F
WE HAVE ARE COOLING A CORRIDOR WITH PARTITION IN THREE SIDE, GLASS WITH 10 MTS OVERHANG AND STEEL ROOF WITHOUT INSULATION. THE AREA IS 200M2 WE INSTALLED 25 TONS. THE CORRIDOR HAVE 13 MTS OF HEIGHT AND WE ARE USING FLEXIBLE DUCT 3MTS BELOW ROOF, THE RETURN GRILLE IS IN 1MTS BELOW ROOF. WE HAVE...
