Carryfast:
The premise remains.He needs to know the height in feet and inches and a 4 m trailer won’t go under a marked 13 foot bridge.
Technically it should! For a bridge to be marked up as 13 foot, then the absolute minimum it should be is 13’3" which converts to 4.0386m
You’re supposed to go by the marked height not any supposed safety margin added to the figure.
P OFF Carrryfast, you just said “you’re supposed to go by the marked height not ANY supposed safety margin”
Well this poor non-UK driver pulling a 4mt trailer wanted to go under a bridge marked up as 4m1 . In his eyes, coming down the road at 30/40 mph he was safe to go under it, END OF !!! He obviously didn’t have time to get out his calculator to work out WTF 13’0 was
and wether there was a discrepancy between the one he recognized and the mis-information on the one he didn’t !!
The ‘poor non UK driver’ didn’t need to get out his calculator coming down the road.All he needed to do was establish the height of the vehicle in feet and inches before starting the journey leaving the yard on the other side of the Channel.
Just like the ‘poor UK driver’ needs by law to have a height indicator in imperial in the cab.In addition to obviously needing to establish the height in metres if going to the continent.Which leaves the question of a possible stupid loophole in the law that allows for no imperial height indication needed here on vehicles involved in international journeys.
switchlogic:
As it happens I’ve used Whitworth plenty of times on stuff made in my lifetime, and just before, as an apprentice mechanic on old Leyland buses
What reg were the buses ?.
I was born at the end of the 1950’s and don’t think that much made since then generally used Whitworth fastenings.While if it did I wasn’t familiar with it.
Late 60s to late 70s, they used a real hotchpotch of weird sizes. Still got many of my strange spanners that are next to useless. Back then you could even get most weird sizes from Snap On, maybe you still can
switchlogic:
As it happens I’ve used Whitworth plenty of times on stuff made in my lifetime, and just before, as an apprentice mechanic on old Leyland buses
What reg were the buses ?.
I was born at the end of the 1950’s and don’t think that much made since then generally used Whitworth fastenings.While if it did I wasn’t familiar with it.
Late 60s to late 70s, they used a real hotchpotch of weird sizes. Still got many of my strange spanners that are next to useless. Back then you could even get most weird sizes from Snap On, maybe you still can
Blimey. Let’s just say yes given the choice of having to use a mixture of Whitworth and AF I’d obviously go with metric every time.However as I’ve said in the real world since around 1960 it’s generally a comparison of AF v Metric.In which case there’s no reason to think that using imperial is an inferior standard while often an advantage in terms of fewer tools needed to do a similar job.
Blimey. Let’s just say yes given the choice of having to use a mixture of Whitworth and AF I’d obviously go with metric every time.However as I’ve said in the real world since around 1960 it’s generally a comparison of AF v Metric.In which case there’s no reason to think that using imperial is an inferior standard while often an advantage in terms of fewer tools needed to do a similar job.
Despite the smaller increments of metric allowing for more precise measurements.
Blimey. Let’s just say yes given the choice of having to use a mixture of Whitworth and AF I’d obviously go with metric every time.However as I’ve said in the real world since around 1960 it’s generally a comparison of AF v Metric.In which case there’s no reason to think that using imperial is an inferior standard while often an advantage in terms of fewer tools needed to do a similar job.
Despite the smaller increments of metric allowing for more precise measurements.
In what sense. 7/16,1/2,9/16,5/8,11/16,3/4,25/32,7/8 AF etc all fit their respective applications as precisely as metric tools fit theirs.
Blimey. Let’s just say yes given the choice of having to use a mixture of Whitworth and AF I’d obviously go with metric every time.However as I’ve said in the real world since around 1960 it’s generally a comparison of AF v Metric.In which case there’s no reason to think that using imperial is an inferior standard while often an advantage in terms of fewer tools needed to do a similar job.
Despite the smaller increments of metric allowing for more precise measurements.
In what sense. 7/16,1/2,9/16,5/8,11/16,3/4,25/32,7/8 AF etc all fit their respective applications as precisely as metric tools fit theirs.
Sorry, I should have explained that better. I meant a higher degree of accuracy during design and manufacturing processes.
There is also the fact that metric units are interrelated. For example: one litre of water weighs 1kg (at 4 degrees celcius) or one Newton is the force required to move 1kg a distance of 1 metre.
Radar19:
I didn’t even know there were Imperial and Metric spanners.
You’ll rarely need imperial tools these days. Cant remember when I last had to pick up an A/F spanner. Probably when I didn’t have the right metric one and substituted an imperial one (as Carryfast pointed out some metric & imperial spanners are the same size. In fact they can be useful with rounded metric bolt heads, pop a slightly smaller A/F spanner on it, hammer it down if need be and boom, bolt undone)
I feel a podcast coming on - Spanner Chat with Carryfast & Luke
Radar19:
I didn’t even know there were Imperial and Metric spanners.
You’ll rarely need imperial tools these days. Cant remember when I last had to pick up an A/F spanner. Probably when I didn’t have the right metric one and substituted an imperial one (as Carryfast pointed out some metric & imperial spanners are the same size. In fact they can be useful with rounded metric bolt heads, pop a slightly smaller A/F spanner on it, hammer it down if need be and boom, bolt undone)
I feel a podcast coming on - Spanner Chat with Carryfast & Luke
Metric and imperial spanners to undo rounded off rusty bolt heads is always useful. 11mm=7/16, 13mm=1/2 inch, 17mm=11/16, 19mm=3/4 inch ect ect. Not an exact exchange but near enough with a hammer
And there was a mad time (80s ?) when you could have machines, vehicles, trailers with a mad mix of both imperial and metric fastenings. You had to be very careful on choosing sockets and spanners, put a 13mm on a 1/2 inch or a 19mm on a 3/4 and you would round it.
But getting back to heights, how do you all measure your height, do you hold a pole up to the corner closest to the drivers door and take that as accurate or do you measure all four corners of the trailer and use the highest. If you have measured it at full weight do you check again empty (could be significant differences when we were riding on steel, not so much now) And what do you use for measuring, a proper telescopic pole with angled top of just any leghth of wood then measure it with a spool measure ?
stevieboy308:
And 4m truck will fit under a 13’3" / 4.0386m even you won’t argue that point
The rule is that you must know the height of the vehicle in imperial and you must obey/use the ‘marked’ height on the sign.
But you agree a 4m truck will fit under a 4.0386m bridge?
I do hope when you’re doing the conversion into old school so you can understand it, the rounding doesn’t knock off more than 387mm
4m goes under 4.1m so the driver has no need to know what feet and inches are…4.1 is 4.1…but…for 387… of a gap…id still be crawling under with half of me hanging out of the window whilst going under…
how hard is it to get a tape measure out of the poud shop for the princley sum of £1…works well enough for me…and…they usualy have meters and feet/inches.small enough to fit nicely in every limpers lidl bag…i personaly dont comprehend what 387mm is unless i look it up.
Let’s just say yes given the choice of having to use a mixture of Whitworth and AF I’d obviously go with metric every time.However as I’ve said in the real world since around 1960 it’s generally a comparison of AF v Metric.In which case there’s no reason to think that using imperial is an inferior standard while often an advantage in terms of fewer tools needed to do a similar job.
7/16,1/2,9/16,5/8,11/16,3/4,25/32,7/8 AF etc all fit their respective applications as precisely as metric tools fit theirs.
