This finish should also be rolled and made uniform, so that, in order that the water may pass off freely, there will be no obstruction between the stone roadbed and side ditches.
When the road passes through villages and towns the grading should reduce the roadbed to a grade as nearly level as possible.
The macadam road consists of a mass of angular fragments of rock deposited usually in layers upon the roadbed or prepared foundation and consolidated to a smooth, hard surface produced by the passage of vehicles or by use of a road roller.
The rolling not only consolidates the material, but puts the roadbed in proper shape for travel immediately.
After the roadbed has been thoroughly prepared, if made of loam or clay, it should be rolled and made as hard and compact as possible.
This condition is more liable to be found on dry, sandy soils, and where the roadbed is subject to the direct rays of the sun, and where the winds sweep off all the binding material from the surface.
Care should be taken to keep the stone set up perpendicular with the roadbed and set lengthwise across the road with joints broken.
On roads where the heaviest travel would come the roadbed was made eight inches deep.
A rolling road is not objectionable, and besides there is no better roadbed for laying on metal than the hard crust formed by ordinary travel.
The roadbedshould be first graded, then carefully surface-drained.
The foundation to receive the metal, if the natural roadbed is not used and the bed is of soft earth, should be rolled until it is hard and compact.
The roadbed appears to be almost as solid as a plank road, but is much easier for the teams.
At the end of the line, in the middle of the earthenroadbed walked an old horse, with an earnest face and a dump cart hitched to him, and in the cart were the boxes of books which Susan had helped Oliver to pack the evening before.
And in what superb condition are the roadbed and track," added the Photographer.
In places the sharp stones blasted from the roadbed cover the steep and forbidding descent for hundreds of feet below us.
About a hundred yards of roadbed ruined--that's the extent of my loss, for I'd charged off the trucks to profit and loss two years ago.
The road along the northern bank of the Yaque is the better of the two, since the roadbed is good and there are few rivers to cross.
The roadbedis very rough and the passengers are considerably shaken up, but the memory of what used to be helps to mitigate the discomfort.
After leaving Sanchez the end of the Samana range is soon reached and for miles the train travels across a mangrove swamp, where the bushy vegetation is exceedingly dense and the roadbed is covered with grass.
Considerable bridging is required and a gravel surface provided throughout the entire length to insure an all year road, so the cost of even this narrow roadbed will be high.
While most of the roadbed will be entirely new work, it will not be of heavy construction, the country being comparatively flat.
Drainage structures under roadbed to protect embankment and private water supply 82.
The work was handled by the contractors in a very creditable manner, and an excellent roadbed was secured.
The old road which this paving was to follow in a general way contained many sharp curves and had a roadbed not eighteen feet wide on the average.
The width of roadbed is 20 feet and the maximum grade is 5 per cent.
This construction was a five per cent development to eliminate the heavy grades and narrow roadbed of the former road.
Permanent way, the roadbed and superstructure of a finished railway; -- so called in distinction from the contractor's temporary way.
Ralph was interested, as there struggled from the cindered roadbedan erratic form.
One temple was somewhat disfigured, and her dress was soiled with roadbed dust and grime.
The roadbed of the St. Petersburg and Moscow Railway was made 30 feet wide on top, for a double track of 5 foot gauge, with a gravel ballasting two feet deep.
The roadbed was raised from six to ten feet above the ordinary level of the country, and was 30 feet wide on top.
The spread rails had merely switched the train off the track onto the level of the highway roadbed into the flat field.
In a moment the train rushed on, leaving the four standing on the roadbed looking disconsolately in the direction of the town.
He fell with a grunt of anger and pain and lay rolling on the cinders which lined the roadbed for a moment without speaking.
As far as the eye could reach stretched the roadbedand its telegraph poles, finally disappearing in the haze of the morning.
No other roadbed may equal this, for none other has access to the famous Sherman granite, the best and cleanest ballasting material known, which has created this unrivaled pink trail across plains and mountains.
The Canadian Pacific is not double tracking its roadbed to the Coast for nothing.
Construction and Maintenance of Railway Roadbed and Track Lea.
The smooth packed surface acts like a roof, and almost before the rain stops falling all surface water is drained off to the sides so that an inch down under the surface the roadbed is as hard as it was before the rain.
The roadbed was none too smooth, and he had to be careful how he picked his steps.
They came limping, flying, rolling along the roadbed from the direction of a train standing stationary on the out track.
The roadbed was somewhat neglected and uneven, but he had run over it twice within a few months, and as they started out Roberts announced that their special orders had shown clear tracks.
They had noted or guessed his sharp pursuit of them, had joined each a hand, and spreading out the others practically barricaded the narrow tunnel roadbed so he could in no manner get past them.
As she reaches theroadbed the express rumbles over the trestle.
At the bridge the roadbed terminates and a trestle carries the tracks for a distance of fifteen yards.
The nature of her mission gives her strength to travel over the rough roadbed with incredible speed.
The opposition can make it plain enough that your crowd dynamited its own roadbed through a well-founded fear that the tracks clear through weren't strong enough to stand the passing of a train.
A large amount of solid rock has to be blasted out here before the roadbed can be laid.
We'll blow out the roadbed here, and then where are you?
I'll have the blast against the roadbed here ready in five minutes, Black.
With the roadbed gone at this point also, he did not see the slightest chance for the S.
The rails have been blown skyward and a big hole torn out of the roadbed itself.
Very extensive repair shops have been erected at Alexandria, and furnished with costly machinery for the use of the road, and I understand that the iron and the roadbed are now much better than when the Government began to use it.
The roadbed has been placed in first-rate condition.
When that road was recaptured from the public enemy not only was the roadbed a good deal washed away and damaged, but neither rails nor sound ties were left upon it.
And in addition, the electric locomotive is much easier on track and roadbed than the old 'iron horse' driven by steam generated either from coal or oil.
