. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. CONSTRUCTION. can make large breaches in them, which is a great advantage to them, and a no Ids difadvantage to the beiieged. The retrenched baftion, or redoubt in form of one within the baftion, mull increafe the expence at leaft one-third. defence, is in the fquare, equal to reo decrees, in the p»n. tagon, to 138, in the hexagon, to 130, and in a conftru on pnrt of a right line, to 90 degrees. He fuppofeatwo forts of fortification, viz. the trreat. i-i The ditch before it is bul, il
. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. CONSTRUCTION. can make large breaches in them, which is a great advantage to them, and a no Ids difadvantage to the beiieged. The retrenched baftion, or redoubt in form of one within the baftion, mull increafe the expence at leaft one-third. defence, is in the fquare, equal to reo decrees, in the p»n. tagon, to 138, in the hexagon, to 130, and in a conftru on pnrt of a right line, to 90 degrees. He fuppofeatwo forts of fortification, viz. the trreat. i-i The ditch before it is bul, ill defended, as there are no which he makes the exterior iide equal to 200 toife! in a5 tenai lies for that purpofe. And as it is hollow or empty it polygons ; his line of defence equal to feven tenths of t e may be taken as, as the mam baftion, by means of a exterior fide, or 140 toifes; and the face of his baftion equal fecond rune, and thereby occafion the lofs of the place, to half the tenaille, or line between a Banked ancle and I - efpecially as no retrenchment can be railed within it to enable interfeftion of the lines of defence ; and the little in wh ch thebefieged to capitulate with more advantage. he makes the exterior fide in every figure equal to 7o toifes retired flanks, or batteries appear to be too near to the line of defence equal to feven tenths of this, or to , 0 one another, being only feven toifes diftant f,om outline to or 120 toifes, and the face of the baftion equal to hall the tenaille, his conftrudion in both being the .- , - - , , ,. ;, „." r .--— '«'«"« ^ 1 vj, jj vx, m me \^, x/, 10 rec tne lares in the hexagon, and by conltrudtion on pan of a right A C, B D, draw the flanks C E, D F, and form the curtain line, it is no lets an angle than one of 143 f 48". by drawing E F He affigns no reafon whatsoever for the length of his Mr. Bl'ondd "takes on each flank ro toifes for his fquare perpendicular
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Keywords: ., bookcentury1800, bookdecade1810, booksubjectencyclo, bookyear1819
