block system


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block system

[′bläk ‚sis·təm]
(civil engineering)
A railroad system for controlling train movements by using signals between block posts, that is, the structures that contain the instruments indicating the positions of trains, conditions within block sections, and control levers for signals and other functions.
(mining engineering)
A system of pillars in which a series of entries, rooms, and crosscuts are driven to divide the coal into blocks of about equal size which are then extracted on retreat.
References in periodicals archive ?
Apart from this, the eco bio block system was also used in Delhi for Yamuna cleaning many years back and it had shown successful results.
Each block system will accommodate curves, steps, corners, caps and setbacks differently.
During construction, the bottom fabric of the coir block system should be anchored properly to the base with wooden wedges and /or metal staples.
RoLanka's BioD-Block[TM] is a coir fiber block system consisting of a densely packed elongated mattress coir fiber block attached to a bristle coir woven fabric.
The Terra Block System features a line of machines that manufacture Compressed Earth Blocks using common soil as the raw material.
Features include: adjustable preloaded movable jaw for fast part loading on the manual model, enclosed vise body to keep out chips and debris, and a quick change machinable jaw block system that comes with four sets of 7075 T-6 aluminum jaw blocks or four sets of ductile iron jaw blocks.
Upon implementing the new schedule, administration and faculty revised report cards, student records, and curriculum to conform to a block system with 6-week grading periods.
RAPID xDSL COPPER NETWORK DEPLOYMENT can be achieved with the DSLink DSL Terminal Block System.
The new machine features a slide block system and helps eliminate the possibility of fabric contamination with oil, resulting in lowered operating and maintenance costs.
Last winter, when Lego rolled out its programmable robot building block system, Lego Mindstorms, the company created a Web site (www.
Fritz Haller built his 1987 USM furniture factory using the MAXI steel building block system, with possibilities for extension as rational and ordered as the products it houses.
Block system access calls from locations outside the business service area and during those times the business is closed