We studied different commercial typologies and measured their levels between the public and private space.

Catering

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  For the cafeteria, more public activities happen in the catering hall.

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  It has a progressive relation because of the different needs of privacy.

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  For the catering space,the dinning hall is an main public space and it is connected by the entrance and exit.

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  The level of public activity in the fast food shop is related to the main street outside.The waiting hall is lively.

Shopping

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  For the supermarket,the entrance and the check out place have many public activities besides the shopping space.

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  For the service trading space，Most public activities happen in the service space and rest area.

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  The square has the highest level of public activities and it influences the inner space of the dress shop greatly.

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  It has a progressive relation among the different spaces in the bookshop. The entrance hall has a high level of public.

Others

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  The main public place is the reception desk and the cash machine where people can deal with their problems more quickly.

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  Although the exhibition space has a large space,it has really low level of public activities.The entrance hall and the gift shopping are more public