. A detailed study of bridge specifications . tance in designing rivet spacing in structuralsteel. The minimum allowable distance between rivets is governedby the size of the dolly on the riveter, while the maximum distanceallowable is determined by the character of the stress, v^hich the ma-terial betv/een the rivets takes. However, for convenience and sim- I plicity, only one maximum spacing is specified. The width of the shoulder fS) ondollies is usually 1/4 inch. Therefore,the minimum rlistance from the center of ^the rivet head to the edge of the dollywould be 1 Is ( — + ~H), where His th
. A detailed study of bridge specifications . tance in designing rivet spacing in structuralsteel. The minimum allowable distance between rivets is governedby the size of the dolly on the riveter, while the maximum distanceallowable is determined by the character of the stress, v^hich the ma-terial betv/een the rivets takes. However, for convenience and sim- I plicity, only one maximum spacing is specified. The width of the shoulder fS) ondollies is usually 1/4 inch. Therefore,the minimum rlistance from the center of ^the rivet head to the edge of the dollywould be 1 Is ( — + ~H), where His the diam-4 2 eter of the head. Therefore, in a 7/8-inch rivet, the distance fx) would bec- l~l/3r. inches. Hence, there must be at least that m^uch cleare^nce for riveting. • In case multiple punches are used, the minimum allov^rable distance would be greater than 7 1 111 — -f — or 1 r-r 4 16 The distances between the punches are determined by the size orthickness of the jaws which hold them. This fact necessitates a r—^^^^. greater spacing than 1 11_16 -inches, and, for convenience, it is made three diameters of a rivet. The naxiinura allowable distance is determined hjr consider- Ing the material betTreen two rivets as acting under compression. low, to keep this little column A, from failing, the factor i should not he too great. Assume a limit for — ~. Theil. taking the radius of gyra- Ir 1 tion of a 5/8 inch plate, (the thinnestallowahle), ahout its x-x axis, in Figure. It is found tohe .108 inches. Therefore, the al-
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