Roof truss install - what would you do?

[BadgerBadger]

One of the pieces in our build jigsaw puzzle is how to handle our roof truss installation.  We've split our build into trades and have bricklayers taking us up to wall plate - I'm now working out the most effective way of getting the roof on.

 

We're using pre-fab roof trusses, there's a fair few of them but they're relatively modest in size at max. 6.5m span, and max. 4m height.  Max weight of each is ~100kg.

Site is a little restricted and we only have a clear working area of about 8m x 10m in front of an L-shaped house.  We can comfortably get rigid lorries in but then there's not really space to move a telehandler around to offload them.

 

Across the entrance to the site we have some overhead cables - at a squeeze we have 5m height clearance under some phone cable and then there's some electricity cables above at 8-9m.
  
The road in-front of our site is relatively narrow and if a vehicle is stopped at the entrance others can only just squeeze by, if at all.  So not ideal for anything other than very short job.

Options in my mind:

 

- See if I can get trusses delivered on a low-bed hiab-equipped lorry to squeeze under overhead cables onto site.  Offload trusses to ground, and then hire telehandler/operator to get them up to wall-plate.  Or lift ~100kg trusses individually by some other means?

 

- Hire telehandler/operator to offload delivery lorry from the road, and somehow manoeuvre trusses through access onto site under overhead restrictions.  This feels like it could be very tight as the access width relatively narrow too so not sure it's realistic.

 

- Contract lift crane setup on site. Lift truss packs from delivery lorry parked on road/neighbouring drive, over the overhead cables and straight onto wall-plate. Likely a 25m reach, so would be a pretty big crane.

 

Or something else - what would you do?

 

I'm quite drawn to the big contract lift option as it gets the complicated bit done in one hit, and it's then hopefully a relatively straightforward job for carpenter/ourselves to set out the trusses.  Alternatively, if I had a simple way of lifting individual trusses then I just need to get them onto site in the most effective way.
 

[markc]

Roof trusses are easy to carry, and depending where you are in the country a spider platform with winch will place roof trusses like a small tower crane.

if you can give me more info I can give a more specific answer. Mobile cranes are a big overkill for most truss systems

[nod]

1 hour ago, BadgerBadger said:

One of the pieces in our build jigsaw puzzle is how to handle our roof truss installation.  We've split our build into trades and have bricklayers taking us up to wall plate - I'm now working out the most effective way of getting the roof on.

 

We're using pre-fab roof trusses, there's a fair few of them but they're relatively modest in size at max. 6.5m span, and max. 4m height.  Max weight of each is ~100kg.

Site is a little restricted and we only have a clear working area of about 8m x 10m in front of an L-shaped house.  We can comfortably get rigid lorries in but then there's not really space to move a telehandler around to offload them.

 

Across the entrance to the site we have some overhead cables - at a squeeze we have 5m height clearance under some phone cable and then there's some electricity cables above at 8-9m.
  
The road in-front of our site is relatively narrow and if a vehicle is stopped at the entrance others can only just squeeze by, if at all.  So not ideal for anything other than very short job.

Options in my mind:

 

- See if I can get trusses delivered on a low-bed hiab-equipped lorry to squeeze under overhead cables onto site.  Offload trusses to ground, and then hire telehandler/operator to get them up to wall-plate.  Or lift ~100kg trusses individually by some other means?

 

- Hire telehandler/operator to offload delivery lorry from the road, and somehow manoeuvre trusses through access onto site under overhead restrictions.  This feels like it could be very tight as the access width relatively narrow too so not sure it's realistic.

 

- Contract lift crane setup on site. Lift truss packs from delivery lorry parked on road/neighbouring drive, over the overhead cables and straight onto wall-plate. Likely a 25m reach, so would be a pretty big crane.

 

Or something else - what would you do?

 

I'm quite drawn to the big contract lift option as it gets the complicated bit done in one hit, and it's then hopefully a relatively straightforward job for carpenter/ourselves to set out the trusses.  Alternatively, if I had a simple way of lifting individual trusses then I just need to get them onto site in the most effective way.
 

I hired a small crane for our workshop As the Attic trusses where 120kg  and almost 4000 tall making them top heavy 

But on the main house I won’t hire a crane as the max weight is a bit less 

So we will pull them up the side of the Scaffolding by hand 

Like I did on our previous build 

12 meter trusses 

 

When I first started in the build trade 

There where no tele handlers and you hardly ever saw a crane on site 

The you have should be manageable between three 

[oldkettle]

Not sure whether you have fitted your trusses yet, but I have just watched this video by Robin Covett. Looks doable with enough manpower - the lifting part is close to the end.