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1 crushed-stone ballast
• баластра от трошен камъкEnglish-Bulgarian polytechnical dictionary > crushed-stone ballast
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Crushed stone — 20 millimetre crushed stone, for construction aggregate and landscape uses. Crushed stone or angular rock is a form of construction aggregate, typically produced by mining a suitable rock deposit and breaking the removed rock down to the desired… … Wikipedia
crushed rock — noun rock fragments and pebbles • Syn: ↑gravel • Derivationally related forms: ↑gravel (for: ↑gravel), ↑gravelly (for: ↑gravel) … Useful english dictionary
Track ballast — forms the trackbed upon which railroad ties (US) or railway sleepers (UK) are laid. It is packed between, below, and around the ties. It is used to facilitate drainage of water, to distribute the load from the railroad ties, and also to keep down … Wikipedia
Track (rail transport) — Permanent way redirects here. For other uses, see Permanent way (disambiguation). Twin rail tracks in a wooded area … Wikipedia
Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… … Wikipedia
A3 motorway (Romania) — Infobox road marker state = highway name = Autostrada Transilvania name notes = type = route = alternate name = A3 maint = National Company of Motorways and National Roads of Romania section = length km = 415 length round = length ref = length… … Wikipedia
Railroad tie — While wooden ties dominate North American railways, concrete is widely used in other parts of the world. A railroad tie/railway tie (North America), or railway sleeper (Europe) is a rectangular item used to support the rails in railroad tracks.… … Wikipedia
Rail transport — Railroad and Railway both redirect here. For other uses, see Railroad (disambiguation). Rail transport is the conveyance of passengers and goods by means of wheeled vehicles specially designed to run along railways or railroads. Rail transport is … Wikipedia
Marion Steam Shovel (Le Roy, New York) — Marion Steam Shovel U.S. National Register of Historic Places … Wikipedia
building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… … Universalium
D&R Canal Trail — [[file: |250px]] … Wikipedia