Importance of concrete plinth for shelter

N年前個Senior Inspector話，鐵柱底生鏽係因為狗柯尿，我再諗過。

很多時生鏽發生在鐵避雨亭的柱底部，

因為避雨亭與地面接觸的底部會較常被路面水或狗尿沖刷，

為柱底加上石矢圍邊可以避免這問題。

而且，在麻石或磚頭面的鐵柱油油漆後，加上石矢圍邊，可以簡化磚面的收口工序，唔駛花工夫去界。

只需用225-450的PVC筒，加上鐵網，倒入石矢或英泥漿，就可完成石矢圍邊。

Simply as concrete plinth to be 20x20 or 30x30 chamfer embraces the base of the post is also useful

Oftenly, the rush or deterioration of a rain shelter started from the base of the post.

As in that area, it has a relatively higher duration of wetted by groundwater flow or pee of dogs. 

The post of steel rainselter just above the ground would better be designed with concrete plinth to prevent those damage.

Moreover, when the post is constructed on a paving block or granite paving, the concrete plinth eases the process of trimming the paver.

After painting of the post, use around Dia. 225-450 PVC pipe as formwork and wire mesh as reinforcement and pour concrete or mortar to construct the concrete plinth

Please add your comment on the design thinking of concrete plinth.