26 - To draw the rain troughs, let us draw a ´line´ around the roof and then draw the trough lines by using ´line´ as in the picture. Let us choose its thickness by using ´out line´.

27 - Let us use ´loft´ to create the rain trough.

28 - By using ´line´ again let us create the rain pipe and while drawing with ´line´, let us not forget to select the ´enable in render´ and ´enable in viewpoint´ options under ´rendering´.