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Now I am no expert, in fact I claim to know little more than you do :shock: , but my hunch is your rafters are 'balanced' on the trussed purlins with them taking the weight of the roof with that load being transferred to the gable ends just like you said at the beginning. Without doubt...

In that case if you can just check and confirm if the ceiling joists are tied to the rafters at the eves. If they are and there is a continous run of joists from front to back (joists can be overlapped and joined togehter), then you have a coupled roof which means the ridge is not taking any...

Is that a trussed purlin I see before me? You need to show more pictures for us so we can be sure of the direction of the ceiling joists.

Call in the C4 Time Team to investigate.

I find doing U value calculations a very enjoyable part of building design. The thin bed morta system is used to overcome the morta bridging problem. As seen on Tommy Walsh's 60 day eco house build last Monday on Freeview Quest channel @ 6pm

The reason for placing high and low at opposite sides is so there will be thru flow when breezy outside, but when not breezy, as long as there is a temperature differential between the high and low vents (eg the sun is heating the roof a little) there will be still be some air flow via the...

My thought is you come across sounding like a Sales Person/Accountant.

Simon where is the damp coming from? Does the floor get damp after rain? Does the roof leak? Is the garage detatched from the house?

RedHerring, with concrete slabs, they should not be too thin relative to their area. I cannot at this moment recall where I last saw a table for this, but from memory even 150mm is pushing it for this size slab although if the ground is stable it may not crack over time if made from strong...

Interesting ideas. You should have the rebar mesh top and bottom of the 150mm slab. But as for the rest of your ideas, since the top of the slab is only just above ground level, the DPM will not keep the slab dry since the slab will be wet from the ground. I know DPMs are often placed...

The water that collects during rainy times is to be expected if it does not have anywhere to drain to as you have concluded yourself. You next need to explain to this forum if it is just the kitchen that has low earth levels under floor boards, how old the property is and is the low level as...

To have gone to all the trouble of having plans drawn but not have first inquired ino the cost is unusual. My guess would be between £10000 and £100000

how many feet drop is outside ground level from floorboard level?

Research the nature of the Cuckoo

Just corbel the stack brickwork and forget any support. With a 45 degree angle you describe, it would not worry me. But is that building regs legal? However you may find the brickwork on the party wall that is revealed once the breasts are removed was not made well and you get sound...

I have heard there is a new type of brick called the 'Civil Engineering Brick', it is a lot easier to lay apparently.

I didn't know that.... Sounds to me you need a new architect, or are most architects like this? He enjoys you spending your money however. Has this been done on Grand Designs? - I think it has and the doors kept on jamming. Your architect should take a look at old and new bridge...

Looking at the defelction on a 6m beam of various sizes, all I could say was what that builder on Cowboy Builders says to Mellinda "It just can't be done! It just can't be done!!!" Of course in the program Mellinda replies something like "Well it must be done!!" I think that 6m beam will...

What makes you think this? The gable ends support little weight if it is a typical roof construction. It is the other 2 walls where the weight is transferred due to the coupled roof design. Therefore your steel beam would need to support half of the total roof weight...

I assume you will have a cement mixer? If you are middle aged like me, why not treat it like making concrete driveway and split it into 9 sections of 1.3m x 1.3m? Lay 100mm of hardcore over a number of weeks, compact it and blind it. Lay DPM, then do one 75mm x 1.3m x 1.3m concrete...