ASME B107.57:2001 pdf download

ASME B107.57:2001 pdf download BRICKLAYERS’ HAMMERS AND PROSPECTING PICKS: SAFETY REQUIREMENTS
blade:the tapered portion of the bricklaycrs’ hammer-head directly opposite the face.
c hasnxfer:the angled na surface or ecuivalent radiuscncircling the penimeler of the face of the bricklayers’harmmer and prospccling picks and an both ends of thecutting edge of the bnicklaycrs” hanmer.
cheeks:see sides.
cuuarimrg edge rbit):the edge directly opposite the faccof the bricklayeis” hammerhead at the extreme end ofthe blaie.
eye:an apening or apcrture in the bricklayers” hammeror prospecting pick located between the blade or pickand the face into which the handle is inserted if thehandle is separate.
face: the portion of the bricklayers” hammerhead orprospecring pick head, exclusive of the bell and chamfer,localed on the end of the head opposite from the bladeor pick end.
hardle:the portion that protrudes from the harmner-head or pick head and by which the toal is held.handie grip:rraterial securely atiached to the gripend of some styles of hammer or pick handles.
hardness:the condition of the hammerhead or pickhead resulting frorn heal treatme n1.
neck:on some bricklayers’ hammers of aiternativedesign (see Fig. 1). the portion of the harmmerheadbetween the bell and the hammer eye.
pick:the portion of the prospecting pick direcilyopposite the face.
safety message: the information irnprinted on or af-fixed to the hammer that is intended to promote safety.sides:outside srfaces of the harnincr-hcad, on eithersidc of the eye. located between the blade and charnferar neck an tricklayers” harmmers and the pick end andchanfer on prospecting picks: also called cheeks.
lop of hanamser er pick:the portion of the hanmcror prospecting pick head opposite the handle entry.
4 GENERAL REQUIREMENTS
4.1 Design
Bricklayers’ hammers shall have a facc on one endof thc hcad and a cutting edge on the opposite endfor use in setting and cutting isplining) bricks. masonry tile. concrete tile. and concrete blocks and for chippingmortar fron bricks. Prospecting picks shall have a faceon one end of the head and a pick on the oppositeend of the head for use in pulling samples from theground.
4.1.1 The faces of the heads shall be flat.
4.1.2 The faces shall have a chamfcr of 45 deg (orequivalcnt radiusy all around the perimeter with thewidih equalto appraximately 0.06 in. (1.5 mm).4.1.3 ihe undcrside of the cutting edge or bitof the bricklayers’ harnner shall have a beve] ofapproximalely 3D deg to 45 deg.The two ouler comersof the cutting edge shall have a chanfer of approxi-mately 4s deg or equivalent radius.
4.1.4 Handles shall be of any design. includingergonomic,that can withstand the tests specified inparas.4.4.3 and 4.4.4.
4.1.5 The head and handle shall be free of nonfunc-tional sharp edges. points,and surface roughness thatcould inflict personal injury on the user while handtingthe bricklayers” hammer or prospecting pick.
4.2 Materials
4.2.1 Heads shall be made from special -quality. fine-grain.hot-rolled,carbon steel barsconforming 1o thechenical requirements specified in Table 1 and toASTM A 576 or from an equivalent material such asalloy stecl conforrning lo ASTM A 322 or ASTM A 681.4.2.2 Hcads shall bc frce of nmanufacluring andmaterial defects. such as seams. Eaps. pipcs. and coldshuts that could jeopardize sound constructicn. Theyshall conform to requirements for nechanical propertiesspccifed in para. 4.3 and shall wichstand the sinkingtest specihed in para.以.4.3.
4.2.3 Handlev shall be madc of any suitable materialthat will withstand the lest rcquircmcnts in paras.4.4.3and 4.4.4.
4.3 Mechanical Properties
4.3.1 The faces of the hammerheads and pick headsshall be hardened and lempered to a hardness of i5HRC to 60 HRC or equivalent. The steel directlybehind the face shall be a toughened supporting corc.gradually decrcasing in hardness.