Normal Pumper connection size is 5 inch STORZ connection.
Varies by type of truck, e.g., pumper, tender, tanker, hood-and-ladder, brush truck, etc.
The ones that I see are 2-3/8" thick and 6"x12" in size.
Depends on the size and type. Some don't carry any at all, and must be fed from a hydrant or water tanker truck.
A fire hydrant system consists of a network of pipes. Hydraulic calculations allow one to predict the flow and pressure at any particular point. Alternatively, it is a method of calculation to optimize the system by changing the pipe size or flow or pressure so that desired pressure or flow can be achieved at a particular point. Avijit Roy, Kolkata, India
there is no connection between the size of your head and your femur bone
It depends on age, brand, and model. Older hydrants (of standard size) are generally around 370-500ish pounds. There were some low-rise models that were as little as 100 pounds or so. Modern hydrants tend to be 800+ pounds.
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Iron Pipe Size
no bum
Iron Pipe Size
It varies. I have seen a range of between 50 psi to 225 psi. It is affected by distance, size of water lines and their configuration and elevation change from source to the hydrant, as well as the type of pressurization, gravity or pump. On average though 80 to 100 psi. Of course a larger nozzle would decrease the residual pressure while a smaller nozzle would tend to increase residual pressure. 125 psi is about the maximum pressure for a "hand line" in order to be manageable.