En Samling Afhandlinger Om Veje 1876-1881

OUR ROADWAYS. 11 2 in. by half-an-inch in thickness are laid. Wood blocks 3 in. in breadth, are placed upon these wooden strips, and heated asphalte poured into the joints, which penetrates under and adheres firmly to the blocks. 'Henson's Wood Pavement.—The main principle on which Mr. Henson proposes to construct his paving, is placing felt on the bed and between the joints, thus giving, as lie asserts, an elasticity to the road, and allowing by the felt jointing for the ex- pansion and contraction of the blocks. He also varies the shapes of the blocks; in one roadway they are to be bevelled on the top edges, in another at every fourth or fifth block, and in another a A groove is to be cut down the centre of the block, the object of this last being to prevent the surface water from soaking down the joints to the foundation. The Ligno-Mineral Wood Pavement, which is laid in Gracechurch, Fore, and Coleman Streets, possesses certain peculiarities, and differs from others in that it is mostly composed of hard wood, such as elm, oak, beech, or ash, which has been subjected by hydro-carburetted oils to a treatment termed mine- ralization. The blocks, which are 9 in. long, 3 in. wide, and 6 in. deep, arc sawn at an angle of about 60 deg., the object of this being to expose the fibre obliquely to the wearing face, and to distribute the weight of the traffic from the one block to those adjacent to it in the line of thrust. On the sides of the blocks near