building control now advise a fall of 1 in 40 which equates to 25mm per metre, however I belive that 1 in 80 is more than adequate 12.5mm per metre, I think if push came to shove you could get away with 1 in 100, 10 mm per metre,
Steve
To calculate the slope of a manhole pipe, measure the vertical drop between the inlet and outlet pipes and the horizontal distance between them. The slope is determined by dividing the vertical drop (in inches or feet) by the horizontal distance (in the same units). For example, if the vertical drop is 2 feet and the horizontal distance is 20 feet, the slope would be 2/20, or 0.1, which translates to a 1:10 slope. It's essential to maintain the proper slope to ensure effective drainage and prevent blockages.
To calculate the fall (slope) on a 6-inch pipe over 20 meters, you first need to determine the desired slope percentage. A common recommendation for drainage pipes is a slope of 1% to 2%. For example, using a 1% slope, the fall would be 0.2 meters (or 20 centimeters) over the 20-meter length. This means you should lower one end of the pipe by 20 centimeters relative to the other end to ensure proper drainage.
1/8" per foot
The volume of the pipe is [ (pi) x (Radius)2 x (length) ].The radius of the pipe is 50 mm = 0.05 meter.Volume = (pi) (0.05)2 (10) = 0.07854 cubic meter (rounded) = 78.54 litres.That's the volume of the pipe. We have no way of knowing how much watermay be in it. It may be empty, or full of spiders, etc.
The sewage pipe from the home to the tank must drop from the horizontal between 1 in 80 and 1 in 40 to ensure the water and solids stay together in transit.
2.5 m
Vertically it is unrestricted
Pipe with a Nominal Bore of 4 inch (100mm) Outside Diameter 114.3mm
inlet will be 100mm osma type collar to receive 100mm plastic pipe or on a commercial installation may be larger
1m over the 60mm
Given one invert, and the length of the pipe and the slope of the pipe, you multiply the the length of the pipe by it's slope (expressed as a decimal ratio) and add the result to the known invert.
For proper fall. Pipe should slope 1" for every 8'.
When installing a water heater discharge pipe, it is important to follow regulations that require the pipe to be made of an approved material, have a proper slope, and terminate in a safe location. Best practices include using a dedicated pipe for the discharge, ensuring it is properly supported, and avoiding any obstructions or bends in the pipe.
ANSWER: the area of the 100mm (10cm) pipe is pi times it's radius squared which equals 78.5 square cms.The length is 6 metre, which is 600 cms. Therefore the volume in the pipe is 600 x 78.5 cubic centimeters which is 47,100 cc's. A thousand cc's is equal to one Litre. Your answer is 47.1 Litre.
Wouldnt that depend on the temperature as there is something caled " Pressure / temperature relationship
With a level
The best practices for installing a 4" cast iron pipe in a residential plumbing system include ensuring proper slope for drainage, securely connecting the pipe joints with appropriate fittings, supporting the pipe adequately to prevent sagging, and following local building codes and regulations.