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Q.2
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What is the need for P/S traps and what is the difference between them?
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| A.2 |
- European type water closets have a built in water trap to prevent waste gases from
entering the bathroom. Indian type or squatting type water closets require a separate water
trap to be connected to the outlet. These water traps can be P type (outlet into the wall)
or S type (outlet into the floor).
- From the maintenance point of view, there is no difference between the two. From
installation point of view, for European type closet, P trap would normally be used in upper
floors where the waste pipe is outside the wall. However these can also be used on ground
floors if the pipeline for waste is on an outside wall.
- S Trap requires a pipeline to run below floor level and is therefore used on the ground
floor or on upper floors if the roof slabs are made deep enough. S trap installation is more
aesthetic as not much of the soil line is seen and it has the advantage of placing the closet
against any wall, not necessarily an outside wall.
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Q.3 |
What is water head?
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| A.3 |
Water head is the vertical height of inlet of water supply from the bottom of the storage tank
to the inlet of the Cistern.
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Q.4
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Do we need Cast Iron brackets for basins?
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| A.4 |
Cast Iron brackets are not required if the pedestal takes the weight of the basin and the
basin is erected to the wall for support. Today most basins have the provision for rag
boltholes and if fitted with the rag bolt, wash basin do not require brackets or a pedestal
for support.
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Q.5
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Why do smaller products of similar size vary extensively in prices?
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| A.5 |
- Un-branded sanitaryware products are made with basic process and quality controls and do
not confirm to ISI mainly due to lack of vitrification of the product. Such products fired
at low temperature may look glossy at the time of sale, but are likely to craze or crack
because of water absorption.
- Similar looking product, which is made of Vitreous China is fired at high temperature
(over 12000(Raise to 0) Centigrade) making the product non-absorbent or other words Vitreous China to
achieve vitrification, the process controls need to be more stringent and the cost of firing is
much higher resulting in higher prices.
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