BS EN 33:2019 pdf free download.WC pans and WC suites – Connecting dimensions.
BS EN 33 specifies the connecting dimensions of WC pans and WC suites regardless of the materials used for their manufacture.
BS EN 33 does not apply to siphonic action WC pans and WC suites.
NOTE 1 Other connecting dimensions are permitted, e.g. special designs of WC pans, if the manufacturer supplies or recommends the appropriate fittings.
NOTE 2 The shape of the appliance in the figures is for illustration only; it in no way prejudices the final shape of the appliance, which is left to the initiative of the manufacturer.
6 Fixing dimensions for the seat
lithe WC pan manufacturer does not provide a WC seat with the WC pan or does not recommend a suitable WC seat model, the fixing dimensions for the WC seat shall comply with the dimensions given in Table 8 and Figure 2. The angle a is defined to ensure the stable position of the WC seat and its lid in the upright position (see Figures 3a to 3e).BS EN 33 pdf download.