carnehan wrote:...in a word no but you did get me wondering so I went and had a little read up on it. Apparently, trusses and joists have particular loads they can withstand but a screw or nail should have little impact on that and can be treated much like having a knot in the wood - an element that is factored in to those load tolerances. A big no no is to chop a chunk of the truss out or bore a large hole through one as this will greatly affect the load. Another option to disperse the weight being placed on the truss is to spread that weight between two trusses rather than relying on the one.
There you go, I learnt something new today. My roof shouldn't fall in round me!
It has also been bothering me, Im due to be laying a baseboard structure in the next 12 months or so, I’ve been playing around with all these elaborate plans of avoiding the webs, which is just serving to introduce a stupid amount of weight, I’ve not seen many stories in the newspaper recently however, reporting how roofs have collapsed due to model railways