Tue, 19 Dec 2023 04:44:14 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251056#Comment_251056 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251056#Comment_251056 Wed, 30 Nov 2016 19:20:05 +0000 barney
It's also more difficult to service for systems that need short runs - HWS primarily - easier to stack similar functions and service them vertically - less material cost and less energy "lost"

Regards

Barney]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251060#Comment_251060 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251060#Comment_251060 Wed, 30 Nov 2016 20:02:56 +0000 Ed Davies http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251061#Comment_251061 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251061#Comment_251061 Wed, 30 Nov 2016 20:20:29 +0000 barney
Regards

Barney]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251071#Comment_251071 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251071#Comment_251071 Wed, 30 Nov 2016 22:28:42 +0000 djh
A house with that footprint would typically be terraced.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251081#Comment_251081 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251081#Comment_251081 Thu, 01 Dec 2016 09:14:16 +0000 Nick Parsons http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251094#Comment_251094 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251094#Comment_251094 Thu, 01 Dec 2016 10:22:56 +0000 ringi Posted By: Nick ParsonsLots of 1920's/30's semis about 5.5 - 6.5m wide, and 8+m deep. 5.6 is wide for a terrace in this neck of the woods.

This is getting to the limit of what normal sized floor joists can cope with.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251107#Comment_251107 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251107#Comment_251107 Thu, 01 Dec 2016 11:51:45 +0000 EasyBuilder http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251113#Comment_251113 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251113#Comment_251113 Thu, 01 Dec 2016 12:08:37 +0000 Nick Parsons
Yes, but many of the 20s and 30s semis round here have 4 x 2 (100 x 50mm) joists with the span broken by sleeper walls. No joist in these houses would be spanning the full width.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251118#Comment_251118 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251118#Comment_251118 Thu, 01 Dec 2016 12:39:11 +0000 ringi Posted By: Nick Parsons''This is getting to the limit of what normal sized floor joists can cope with.''

Yes, but many of the 20s and 30s semis round here have 4 x 2 (100 x 50mm) joists with the span broken by sleeper walls. No joist in these houses would be spanning the full width.

I was assuming the joists would run from the front and back walls to the "spine wall", so would be half the depth of the house. (Running them the other way don't work if the stairs are next to the party wall.) Sleeper walls don't help on the 1st floor.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251119#Comment_251119 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251119#Comment_251119 Thu, 01 Dec 2016 12:40:55 +0000 ringi Posted By: EasyBuilderThat’s a good response Ed. I was basing my thoughts on the possibility that a roof could be insulated with rockwool whereas a wall may need to use a rigid insulation which is about five times the cost for the same U value. I’m not sure how to cost the building elements more accurately for now.

It is hard to get enough space at the edge of a sloping roof for rockwool without increasing the height of the building, or lowing the ceiling.]]> http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251158#Comment_251158 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251158#Comment_251158 Thu, 01 Dec 2016 15:47:26 +0000 EasyBuilder http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251159#Comment_251159 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251159#Comment_251159 Thu, 01 Dec 2016 16:08:29 +0000 ringi http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251167#Comment_251167 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=14727&Focus=251167#Comment_251167 Thu, 01 Dec 2016 22:06:26 +0000 djh Posted By: EasyBuilderOh I agree – and the eaves are where you’d lose most heat. However, the point I was trying to illustrate with my slightly far fetched example was that the most cost effective shape depends upon the relative costs of the different building elements. For all I know walls could be >2.5 times more expensive per square meter than roofs and floors.
I can see your point in principle, but I [have to] assume that it isn't widely acknowledged in practice because the price differences aren't as extreme, or may even be reversed?]]>