terrylamar
Well-Known Member
There. I fixed it for ya'
We are talking about Canada, sweet pea.
Flats,
- Thread starter hurgoll
- Start date
We are talking about Canada, sweet pea.
terrylamar
Well-Known Member
No, you can have 20,000 lbs. on a spread!
johnday
Well-Known Member
That's each axle on a spread. What is a closed spread? I'm not familiar with that term.
Duck
Sarcastic remark goes here
Duhh, ... I got that bass ackwards.
But that's 20,000 per axle. It takes two axles to make a "spread".
terrylamar
Well-Known Member
If your axles are spread in Canada, you only get 20,000 for both, not each. This is for the Western Provinces, I'm not sure about Ontario and Eastward.
terrylamar
Well-Known Member
If you have a sliding front or rear axle that opens to 10' 1" this is a spread. When you close the axles it is closed. A closed spread.
Gittyup-n-go
Active Member
So ur best bet is not to run a spread in Canada?
R
Racer X 69
Guest
I think that is when she has a headache.
R
Racer X 69
Guest
From the British Columbia Commercial Transport Regulations:
I made the text for what should correlate to our 10' 1" spread axle trailers bold and red.
3m to 3.4m = 9.84ft to 11.15ft.
21,000kg = 46,297.02lbs
Looks to me like the regs are about the same there as they are here. Actually, if the tires and axles are rated for it, up there you can carry more on a 10' 1" spread than you can down here.
terrylamar
Well-Known Member
Track Width
Semi-trailers and full trailers manufactured after
December 31, 1993, must have a track width
(outside of tire to outside of tire) of not less than
2.5 m nor more than 2.6 m. (Container chassis
trailers are exempt.)
Weight
a) truck tractor steering axle, maximum 5,500 kg,
except a self-loading truck tractor or bed truck
b) tridem drive truck tractor steering axle,
maximum 7,300 kg, except permanently
mounted equipment will be allowed 9,100 kg
c) single axle equipped with dual tires, maximum
9,100 kg
d) tandem axle, maximum 17,000 kg
e) tridem axle on semi-trailer and trailer, minimum
2.4 m to maximum 3.7 m axle spread, legal
24,000 kg
f) in c) and d) above any axle cannot exceed
9,100 kg or any 2 adjacent axles cannot
exceed 17,000 kg
g) maximum single tire weight 3,000 kg, except
steering axle of straight truck is allowed
maximum single 9,100 kg, maximum twin
steer 17,000 kg (subject to tire size 100 kg/cm
tire width and rated tire capacity)
Note: The maximum allowable weight on a tridem axle for
T.A.C. lowbed semi-trailers, granted by an overload permit,
is 28,000 kg (2.4 to 3.0 m axle spread), or 29,000 kg (over
3.0 to 3.7 m axle spread).
2. Axle Weight – Spacing of
(Non-Compliant Commercial
Vehicles)
The number and spacing of axles to carry maximum
legal weights are shown below.
7
Table 1 – Maximum Weight
Column 1 Column 2
Distance between the centres of the Maximum gross
first axle and last axle of any group of axles weight of
of a vehicle or combination of vehicles axle group
less than 1.00 m ...........................................9,100 kg
1.00 m up to but not including 1.20 m ........16,500 kg
1.20 m up to but not including 1.90 m ........17,000 kg
1.90 m up to but not including 2.30 m ........18,000 kg
2.30 m up to but not including 2.60 m ........19,000 kg
2.60 m up to but not including 3.00 m ........20,000 kg
3.00 m up to but not including 3.40 m ........21,000 kg
3.40 m up to but not including 3.80 m ........22,000 kg
3.80 m up to but not including 4.20 m ........23,000 kg
4.20 m up to but not including 4.60 m ........24,000 kg
4.60 m up to but not including 5.00 m ........25,000 kg
5.00 m up to but not including 5.30 m ........26,000 kg
5.30 m up to but not including 5.70 m ........27,000 kg
5.70 m up to but not including 6.10 m ........28,000 kg
6.10 m up to but not including 6.50 m ........29,000 kg
6.50 m up to but not including 6.90 m ........30,000 kg
6.90 m up to but not including 7.20 m ........31,000 kg
7.20 m up to but not including 7.60 m ........32,000 kg
7.60 m up to but not including 8.00 m ........33,000 kg
8.00 m ........................................................34,000 kg
Maximum allowable spacing for tandem axles in B.C.
is 185 cm unless the first and/or last is a steering
axle or one that articulates in the manner of a
steering axle.
Spread-axle tandems that have a spacing greater
than 185 cm (6 ft.) but not more than 307 cm (10 ft. 1
in.) are allowed on a semi trailer if their combined
axle weight is not more than 9,100 kg (20,000 lbs.).
Tandem axles of this type are measured as a unit
and the weight of both axles together must not be
more than 9100 kg (20,000 lbs.).
If we look at the portion of the regulation you left out, we see that 20,000 is the limit for spread-axle tandems that have a spacing of greater than 6 ', but not more than 10'1".
johnday
Well-Known Member
SweetDaddy
Well-Known Member
I thought you couldn't even go into the western providences with a spread axles??
terrylamar
Well-Known Member
Legally, yes, in practice, most scales won't call you on it, especially, if you are light. I don't take chances though and close my axles everytime I go into Canada.
eamac2004
Well-Known Member
Is it true that dump valves on spread axles are used similar to that of a tri axle dump valve on a tractor so that the rear axles pivot better during turns? I always just thought the dump valve was to help you unhook a tractor from the trailer. I was never aware of this because at my last company, we took turns spreading the gravel out in the parking lot from where people dragged the axle at a 90 degree pivot.
freedhardwoods
freedhardwoods
A dump valve only releases air pressure. On a trailer (without a lift axle), it releases the pressure from the air bags which takes the pressure off of an axle. The axle will still drag around a turn, but with only its own weight pushing down, it doesn't dig in very much.
Most tri axles (and some trailers) have lift axles. A lift axle requires 2 dump valves and 2 separate sets of air bags all working together.
To lift an axle, one dump valve releases the pressure on the weight supporting bags and the lift bags inflate and pick up the axle.
To lower the axle, the other dump valve releases the pressure on the lift bags, and the weight supporting bags inflate to help support the trailer.
Edit - I haven't worked on a lift axle for a long time. They might use just one complicated valve to do everything these days.
Duck
Sarcastic remark goes here
Yep. Cuz if it malfunctions & you're rolling down the road with 40,000 lbs on a single axle cuz the rear deflated, or if it fails to deflate & the guy doesn't know it & it rips the tires off the rims. Or if the guy is an idiot and thinks that ALL spread axle trailers are like that & pulls one that doesn't have the auto-dump thingy on it.
Les2
Hobbie Trucker
Contrary to popular belief dump valves do more harm than good. Mostly due to the fact that they aren't used properly or they are over used. East Mfg would void a warranty if there was a dump valve hooked up on one of their trailers...
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