11-10-2009, 09:40 AM
Marco, most of the concrete coaling towers with which I'm familiar had concrete roofs, as in the photo below. Tar (not tarpaper) was applied to the roof to waterproof the concrete. (The angle of the light hitting the roof in the photo makes the roof look lighter in colour that it actual is.)
![[Image: CPRailM-424satChathamSt-July86-v-4.jpg]](http://i23.photobucket.com/albums/b399/doctorwayne/THB%20prototype%20photos/CPRailM-424satChathamSt-July86-v-4.jpg)
It's difficult to tell from your photo of the prototype, though, if that roof was concrete - it appears that the gable end is sheathed in corrugated metal, which would mean, of course, that the roof couldn't be concrete. The "doghouse" at the top of the spiral staircase looks to be corrugated metal, too.
Wayne
It's difficult to tell from your photo of the prototype, though, if that roof was concrete - it appears that the gable end is sheathed in corrugated metal, which would mean, of course, that the roof couldn't be concrete. The "doghouse" at the top of the spiral staircase looks to be corrugated metal, too.
Wayne