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Just about to install some of these mid-span of my room-in-roof attic trusses (above detached garage) and wanted to know if they only provide lateral (read sideways I think) support to stop the joists wanting to turn over or do they help spread the load across the neighbouring joists in any...

Just looking up timber prices for joists, to get an idea of how much it will costs/quantities etc, and I cant help thinking the marked prices below are incorrect. I have taken them from the TP website (just went to ring them, but shut after 12 on sat). For joists (and rafters?) I assume I...

Hi Just looking over the Trada span tables for C16 and I have worked out that for my joists I could run with 38x220. 38mm seems a little on the slim side, I know its the depth that makes up the strength but just wanted to see if anyone has any advice along the line of 'Oh yeah, no one ever...

Jeds - Many thanks for that concise answer, I thought my calcs were out, forgot about the conversion to Newtons. Would I apply the same principle when working out lintels on the opposite side of the garage, where I have a door and a window that require lintels. I.E. would I just take the...

(I apologise in advance, far too long winded - the last two sentances are probably all you need to read but I know how you guys like your info!) Just running through some caculations and I would be grateful if anyone could confirm my 'workings'. Obviously I will check with lintel company etc...

Hi I tried following the link to your item and screfix came back with an ITEM NOT FOUND - perhaps you could check it?? C.

Hi Read a few posts on screeding where the recommended depth for screed was between 50mm and 80mm. I will have a garage floor to finish off with screed, the existing hardstanding is on an incline with around a 200mm height difference from one end to the other (~6m long). 1) Would it be...

I have notice them too lately, the always seem to be on my block work when I brush it down. Does anyone know where those red worms come from? I always find them under blocks I leave lying around on concrete and also underneath my sandbags - they obviuosly like the damp conditions but they...

Nice tip about the water in drum first, thanks! C

Thats great, thanks for your replies. Sorry for posting in wrong forum, did not realise there was a tools one, nor a computing one! I best get over there and see if I can help anyone - more my field. Ta.

Hi What length Spirit Level do you guys find works best when building up block work etc? I have a 1200mm one but I tend to stick to the 400mm for individual blocks as its easier to handle. Watching a bricky the other day and I noticed his was larger then mine and I got to thinking :wink...

Thanks for those. As it happend that day turned out real nice and the surface dried out in no time. I always get worried with mortar as I check what I have laid the next day and tend to find it soft and crumbly ( :( ), the following day its pretty hard ( :) )but after that its gone rock solid...

Hi Woke up this morning and forgot to cover the DCBs that I have aleeady laid, with the rain they have taken up water (you can see the darker water patch for a good inch or so on top of the blocks). Is it best to wait and lay only on to dry blocks or does it not really matter too much? I...

Out of curiosity - what happens when a bag of cement goes beyond the shelf life stamped on the side of the bag? (to be honest, I cant actually read the 'dots' that should make up the date!). I've done a little searching and it seems to be related to the additives they put into the cement to...

Oops - sorry for the wrong terminology there too, I of course meant Mortar Bed Thickness, and not joint thickness - thats beginners for you! Cheers for all the feedback.

oh, I forgot to ask what you ment by being Thermally Liable - at first I thought it was to do with the effects of heat/sun on the wall and expansion, is that along the right line? C.

If I had a big joint at Christmas I would most certainly missed New Year - though it could explain why my levels are out!! NoseAll - thanks, I am slightly surprised with the answer - I assumed that because most mortar joints are 10/20mm that a 60mm horizontal joint may cause problems. Your...

Hi Doing some block work for garage and just need to bring the level up on the first few courses of my garage, however the mortar gap seems like its going to be getting too thick at one end, varying from 40-60mm. A neighbour suggested that this is too thick (60mm) for mortar to take weight...

Just looking at doors - what size gap should I leave in my blockwork (100mm 440x210 DCBs) to fit a 838mm door and associated frame? I guess a gap of 2 blocks would make sense, but that would leave me with around 100mm wider gap than the door itself - is that too much? I've no idea what...

(I take it that the measurement is taken fom the corner 'point' to the start of the doo gap?) C.