Olly Writes

Woodwork, writing, walks, DIY and more!

Hanging Out

With the 7x2in joists all cut to length, ends re-sealed and ready to fall in to place, my next job was to set out the positioning and spacings for each of the sixteen hangers (eight on either side) and then, to fit them in to place. Below, you can see a mock-up of what I needed to achieve, where the joist must sit 32mm (1¼in) higher than the wall plates, in order to clear the existing truss-frame by a good 5mm, which had already begun to deflect where I’ve previously used it, in appropriately, to store goods (it’s only 4in/100mm deep and is riddled with woodworm, you see).

If you look closely at that first photo, you’ll see that one of these scraps has been trimmed to a depth of 143mm (32mm less than 175mm). I later used this same block, temporarily screwed in place, to set each hanger in its correct position, with regards to the height of each joist needing to be higher than the wall plates.

In this photo from 2009, you can just about see my former storage solution, with a long length of 4x2in and an old light fitting spanning the distance between the two 4x2in joists!

Now, the joist at the far end, closest to the rear wall, was going to be 50mm or 2in away from that wall (though, this distance is actually dictated by the width of one leaf of a joist hanger). Moving back towards the front of the floor and, I also wanted to bolt one of the 7x2in joists directly to the existing truss – this was also notched accordingly to sit over the blockwork pillars at either end, which carry the vertical load of the truss and the roof itself, down to the floor.

…Okay, so I over-cut the length of each notch by about 10mm each end!! 😳 It doesn’t matter too much as this joist is, again, bolted to the existing truss plus, there’ s more than half its overall thickness sitting on top of the blockwork. Still, to be on the safe side, I’ll fit a a pair of folding wedges, later, to seal off each gap.

If you’re waiting to read more on these new Metabo 10.8v Powermaxx 12 drills I bought before Christmas then, I’d been asked to write a gust blog post over on the Toolstop Blog, which I’m aiming to get done within the next week.

Whenever you’re fitting joists, whether it’s for a floor or for a roof, it’s advisable to sight down each length and note where the ‘camber’ or curve is on each edge (I marked mine with an arrow, as above). You should then ensure that all joists are set out in the same manner. I prefer to fit mine with the convex edge pointing upwards but, there’s also a good case for fitting them so that it looks like they’re “sagging” downwards… In a situation like this though, where the floor is unlikely to be walked on (I don’t know anyone less than 3ft tall…), it’s not critical which way they go. This floor is primarily for storage, after all.

Fixing the hangers was fairly straight-forward at first. Several builder’s merchants recommended these Simpson Strong-Ties to me, where I am essentially fixing timber joists to timber wall plates. Twist nails were uses to secure the face of each hanger to the walls, ensuring compliance with the specification, with regards to the minimum number of fixings in each part of the hangers (four in the top, eight on the face and four in to the joist). I’m not saying that it was easy banging those small nails in to masonry, though!! 😉 Where the roofing sheets (which I didn’t want to remove!) made the angle too acute for me to comfortably hammer a nail in to the top of each hanger, I instead reached for my Powermaxx 12 drill and fitted the angle driver attachment – which arrived just in time, thanks to both Toolstop and Metabo! – which allowed me to drive four 1inx6 stainless steel screws in for a secure fixing. Where the straps were too long and could not reach down behind the back of the wall plates with the corrugated roof sheets in place, I opted to bend them back towards the joists. This is better than simply cutting them off, which would, of course, expose portions of the steel that hasn’t been galvanised and could lead to premature failure of each hanger.

You can also see, in the photo above, where I’ve already begun draught-proofing around the eaves with a can of expanding foam. For future reference though, I must stress that these cans should ideally be used and thrown away on the same day. Otherwise – as I discovered – despite all your best efforts at cleaning (see foam eater), the foam will still go-off and cure inside the nozzle, which renders only capable of producing a mere dribble of foam, at best! I’ve been advised to try the gun-grade expanding foam instead, which apparently can be used even one-week after the first application.

If I wasn’t too busy wrestling with each 3m length as I tried to fit each one in to position, I’d have taken an action-shot that would tell you all you need to know about fitting joists in to a space where the roof’s already covered. You see, on new-builds and renovation work where the roof is still to be done, you can attach all the hangers to both wall plates and each joist will simply drop in to place. This wasn’t practical in my situation and, as according to the Building Regulations, a joist depth of 175mm was the minimum I could get away with to cover a 3m span. So, after fixing all the hangers down one wall, on the opposite side, I only fixed one-half of each hanger. By binding the other half out of the way, I could drop a joist in at one end  and swing it round in to the other, before securing the second-half of each hanger. It worked very well; I just wish I’d taken the time to grab a photo but, my arms were very tired for the next couple of days!

All the joists were in place before the end of my first full-day. I do wish I’d allowed a couple of millimetres on the length of each one though, as it only made the task of swinging each one in to position that bit more difficult – lots of hammer-action and swearing was required!! Leaving any high-up shelves in place does help when you’re doing a job like this and are working on your own at the same time. I did make sure to clear them all off first, though! 😉 Sighting across the tops revealed that everything was surprisingly parallel and level. Alright, so, spirit level did show that they weren’t all perfect but, I should be able to shim up or plane-down the high-spots, if at all necessary.

At the end of Day 2 (my first full day on this job), it was nice to have somewhere to store these other long lengths of wood and, at the same time, to be able to try the new floor out for size! 😀 I’ve already discovered that, for anything over 3m/10ft in length, I need to close the up-and-over door behind myself as I lift each length up. Otherwise, there isn’t enough clearance and I just end up trying to put a hole in the roof!

Thanks for reading.

Advertisements

5 responses to “Hanging Out

  1. Walnut Weasel 13/02/2011 at 13:54

    Look’n good! This should be a big help.

  2. joeabbott 13/02/2011 at 19:13

    Great post … I created a similar lumber storage structure earlier and documented that here, but haven’t blogged about it. I will but one question I have is: are you able to access your wood easily? My situation is that I’m very rarely using the lumber up there and starting to forget what I have!

    But, a loft that spans your entire workspace is genius! Nice work.

    • Olly Parry-Jones 13/02/2011 at 23:01

      Thanks, Joe.

      I like what you’ve done and the method you’ve used to brace the columns is very interesting; not something I’d seen before.

      That’s one problem I haven’t yet overcome – how I’m going to get up there… I thought about fitting a loft ladder that folds or slides down but, it would consume a lot of space and could be expensive. I might go for a lightweight aluminium stepladder (they’re very cheap, these days) and set it up as and when required. Really, I should of course be making one out of wood – and, if I can find the time, I will do that! Either way, I could the either suspend it below the joists with ladder hooks or, even, up in the roof space itself. Maybe I could even hang it off the purlins, saving a bit of space up there…!

      The floor itself is approximately 10ft square. There’s another 7ft+ from the first joist to the door, which provides me with the clearance to throw stuff up and, also, I still have some room to assemble tall units. It’s not only for storing wood; it’ll allow me to clear all the household junk from the storage units, so that I can remove those and move my machines around again, which should free-up some floor space.

  3. joeabbott 14/02/2011 at 16:39

    The bracing I used reflects the fact that I’m in earthquake country. We don’t have many ‘quakes here but it doesn’t take more than one for someone to be worried about having hundreds of pounds of loose lumber crashing down.

    An idea that you don’t see in the pictures I’d posted is that I nested a set of three dual-tube fluorescent light fixtures between the loft joists. As long as the garage door is down, it’s a beautiful bit of lighting!

    When you come up with your system for storing/accessing lumber, please post. I have ladders in the garage but they’re either nested away or too cumbersome to maneuver around. I usually wheel over a sturdy assembly cart I built, lock the wheels, and climb on that to get at something! I could use an inspired idea to help me out here!

  4. Steve Anderson 20/02/2011 at 14:17

    Murphy was a pretty experienced joiner but out of work because of the credit crunch so decided to leave the Emerald Isle for work in the Smoke. He searched high and low finally coming a across a site advertising “Joiner wanted”. Feeling emboldened, but not a little desperate, Murphy headed straight to the Foreman’s office.

    Finding the Foreman at home he went straight to the point volunteering his services as the best the industry has to offer “to be sure”. The Foreman not unimpressed by Murphy’s gusto and resume was a little reserved given the huge number of candidates that had crossed his threshold but had proven unsuitable.

    The Foreman went straight to the point stating that he needed to test Murphy’s knowledge .. “so Murphy do you know the difference between a Joist and a Girder?”. Hesitating for a brief moment, Murphy sucked his lip and in best Irish brogue replied “Yes, now I tink that is obvious to be sure, and well tis easy, Joist wrote Ulysses and Goethe wrote Faust”

I welcome your thoughts.

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: