I try to find forumula for Moment of Inertia for corrugated hollow pipes. Main Pipe is made of Solid wall construction over which smaller diameter hollow plastic pipe is spirally welded.
Main PIPE:
1200 mm inside diameter
20 mm wall thickness
Spirally wrapped PIPE:
60 mm outside diameter
6 mm...
thanks cvg.
Could you tell the brand name of this pipe?
An ? would like to know that what was the stifness value of pipe? In which system did you used this pipe (sewer?) ?
Is there anybody who knows about MRP (metal reinforced corrugated pipe)? The pipe is like double wall HDPE corrugated pipe but there is a metal layer inside the pipe.
ASTM code : ASTM F2435 - 05
I want to know about your experience and views (positive or negative) and the advantages of...
Is there anybody who knows about MRP (metal reinforced corrugated pipe)? The pipe is like double wall HDPE corrugated pipe but there is a metal layer inside the pipe.
ASTM code : ASTM F2435 - 05
I want to know about your experience and views (positive or negative) and the advantages of...
Is there anybody who knows about MRP (metal reinforced corrugated pipe)? The pipe is like double wall HDPE corrugated pipe but there is a metal layer inside the pipe.
ASTM code : ASTM F2435 - 05
I want to know about your experience and views (positive or negative) and the advantages of...
Is there anybody who knows about MRP (metal reinforced corrugated pipe) production machine? The pipe is like double wall HDPE corrugated pipe but there is a metal layer inside the pipe.
I know a Chinese company which produces this machine but I wonder if there is any other manufacturer...
thanks for the responses.
As a result, I understand that, for a buried PE pipe system, there is no need to take special precautions for elongation of the pipe. Up to certain temperature change, restriction of the soil is enough. But, If temperature change is extreme, low thrust capacity...
My question is about pipeline elongation & contraction for underground condition.
We are designing a drinking water pipeline. The type of the pipe is HDPE (polythene) and the transport water line length is 2500 m, dia of pipe is 630 mm. Pipe will be buried in nearly 1,5 m. depth...
What is the maximum diameter of a main sewer pipe that a lateral sewer pipe (house connection pipe) can be connected? For example, is it possible a DN 200mm pipe, connect to DN 1600mm main sewer pipe?
Are there any standards for the max. pipe dia.?
thanks for the replies...
Just an idea...
if the problem is simplified as force balance (downward by the mass of droplet and upward direction by airstrem force), below equation can be written.
we can assume the water droplets have spherical shapes (dia,R) ,lifted by air stream and hanged by zero velocity, airstream...
I dont remember any code states to install fire dampers on discharge and intake ducts but if the hvac room is fire rated, intake fire damper can prevent the fire&smoke from outside to hvac room by intake duct and discharge fire damper can do same job from hvac room to outside. If the periphery...
Because galvanizing is a process to cover black steel pipes most kind of welding cause to "burn" galvanized layer and once it damaged corrosion is a matter of time. But there is also welding type which doesnt affect the galvanize layer so be sure you use the correct type of welding.
Proper insulation and vapor barrier can solve attic condensation problem but depending on humidity rate there may be a risk of condensation if the water vapor that is drift up into attic from building , is not exhausted. It can condense upon the cold roof frame members. Passive ventilation...
From "ASPE Data Book Vol.4 service hot water systems" ,you can find hot water demand per fixtures for hospitals.Multiplying fixtures quantity by demand, find the total demand,multiply it by demand factor (0,25) then multiply by storage factor (0,60) to find storage capacity.
HOT WATER DEMAND...
BELOW TEXT IS FROM "NFPA 92A -1996 EDITION" IT MAY BE HELPFUL FOR THE DISCUSSION.
"2-4 Elevator Smoke Control.
2-4.1
Elevator hoistways have proved to be a readily available conduit for movement of smoke throughout buildings in past fires. This is because the elevator doors have not been...
Similiar to TD2K's method,
if pipe line is long enough ,put a pressure gage ,find the pressure drop (Pa/m) then using friction loss table find the flow rate .
of course it doesn't give a precise results
Ercan
