This steel septum was protected on either side by a thin wall of asphaltic concrete supported by rubble stone embankments, and owing to irregular settling of 'the embankments became greatly distorted, apparently, however, without causing leakage.
Elsewhere, a simple concrete or masonry wall or core has been used above as well as below ground, being carried up between embankments either of earth or rubble stone.
Is probable, however, that, all things considered, Materials random rubble in which the flattest side of each block of stone is dressed to a fairly uniform surface, so that it may be bedded as it were in a tray of mortar, secures the nearest approach to uniform elasticity.
On descending into the substratum the finer material decreases and more stones are met with; farther down are seen larger fragments of unaltered rock closely packed, and this brash or rubble grades insensibly into the unbroken rock below.
In the flatter parts of the valley occur large beds of loam and rubble, sometimes in terraces parallel with, but several hundred feet above, the river, proving by their disposition and appearance that the valley has been formed by the action of water.
The anicut or dam at Bezwada, begun in 1852, consists of a mass of rubble, fronted with masonry, 1240 yds.
Grey tufa period; ashlar masonry of tufa, coated with fine white stucco; rubble work of lava.
No traces of this are alluded to by modern travellers, but in all likelihood it was only formed of rubble plastered (as is the case still with such Nirvana figures in Indo-China) and of no durability.
The actual construction of successful masonry dams has varied from the roughest rubble masonry to ashlar work.
'The rubble mound of the breakwater' was very, tostly'to the railway company, as time after time it was swept away by storms. On it is a central wall of some 38 ft.
She trotted through the streets, making her way through rubble and debris to the park in the center of the city.
It was formed of a rubble mound quarried by convict labour at the summit of the island, and was lowered by a wire-rope incline to the sea.
In some cases, as, for example, when a high earthen embankment crosses a gorge, and there is plenty of stone to be had, it is desirable to place the outer bank upon a toe or platform of rubble stonework, as in fig.
The potting must be done very firmly, using turfy loam with which a little mortar rubble has been mixed.
In case of adhesive clayey subsoil this can generally be secured by placing over the sloping bottom a good layer of coarse rubbly material, communicating with a drain in front to carry off the water, while earthenware drain tubes may be laid beneath the rubble from 8 to To ft.
Of the best rubble masonry, an ashlar floor of blocks of close-grained trachyte being laid directly under the bridge, where the action was severest.