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The modified single stack, also known as the secondary ventilated stack, is a configuration similar to the single stack system, except a parallel auxiliary vent stack is provided to allow for increased airflow.
1) A single-stack system where supplementary vent stacks are provided is often referred to as a modified single-stack system (see figure 12). This system is actually an extension of the single-stack system, with the aim being to provide supplementary dry-venting to the stack when its wet-vented capacity is exceeded.
27 kwi 2023 · Single stack system. This is the simplest system, in which the waste matter from baths, sinks, et as well as foul matter from the W.C. is discharged in one single pipe, called the soil and waste pipe (S.W.P.). This pipe terminates as the vent pipe at its top, and no separate vent pipe is provided.
1 sty 1976 · Single stack system of plumbing provides a simple solution for drainage in multi-storeyed buildings but limits the discharge in stack. Higher discharge loads necessitate a larger diameter stack. Modified one-pipe system may prove to be cheaper in such cases.
It has quantified the difference in building drainage system performance between a 10 story and 20 story building of common system configurations (single-stack system, modified one-pipe system, fully-vented system, and single-stack system with AAVs) using 100 mm and 150 mm diameter vertical stacks.
Aliaxis has developed innovative single stack solutions that eliminate the need for a separated vent pipe, allowing customers to save space, costs and installation time and ensure better system performance.
16 lut 2021 · Simulated elements of operational performance, including the stack pressure profile, airflow, and resultant trap retention depth for the 10 story building with 100 mm diameter stack in system...
