Journal . a-* ADN30IJJ-3 THE IMPACT I ELASTIC BODIES. 139 Curves of Efficiency j of hammer blow for. fall okiying steel tube (PREPARATORY PILE TUBE l^oiAi-^i^.W, DTTtO VITrt HEIMET, WOOD CAP A CONICAL SNOE\) & SET PER BLOW or J ton RAM when DRIVING. To CAST 17-I8oia VlBROCOWCRETE PILES ~IG 3 LCHC7H Of PTVE TU6E 2° 30 i+o 50 go. -5 TtWPeR^RYCOMPREiSIOH o-s 2>tT s PER BIO* *M P= WEIGHT of PILE IMCLUDINC, CftPASHOE W = WEIGHT OF RAM RATIOS of -E-W This relationship affords a convenient means of comparingdifferent sizes of piles which are required to carry loads pro-portion
Journal . a-* ADN30IJJ-3 THE IMPACT I ELASTIC BODIES. 139 Curves of Efficiency j of hammer blow for. fall okiying steel tube (PREPARATORY PILE TUBE l^oiAi-^i^.W, DTTtO VITrt HEIMET, WOOD CAP A CONICAL SNOE\) & SET PER BLOW or J ton RAM when DRIVING. To CAST 17-I8oia VlBROCOWCRETE PILES ~IG 3 LCHC7H Of PTVE TU6E 2° 30 i+o 50 go. -5 TtWPeR^RYCOMPREiSIOH o-s 2>tT s PER BIO* *M P= WEIGHT of PILE IMCLUDINC, CftPASHOE W = WEIGHT OF RAM RATIOS of -E-W This relationship affords a convenient means of comparingdifferent sizes of piles which are required to carry loads pro-portional to their cross sectional areas. The initial energy of the hammer, whether it be of a weightfalling by gravity, or of single or double acting piston type = II or where t»=the actual striking velocity of the kinetic 2; member of the hammer and hcorresponding to v. the equivalent height of fall To ascertain a safe load which a pile will carry without settlementby an independent calculation for any given instance.—A fairestimate of the resistance of the ground to penetration by thepile, which has been actually overcome by the hammer, maybe made by the following method without entailing referenceto special charts or curves of pile driving data. 140 THE IMPACT OF IMPERFECTLY ELASTIC BODIES. Let W = weight of the hammer expressed in tons
Size: 1595px × 1565px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade186, bookpublisherlondon, bookyear1861
