. Details of riveted railroad truss bridges . ld the two members in line. An extra plate the same sizeas cover plate is also riveted over the end of the two aids in holding the two members In line and protects jointfrom the deteriorating influences of the weather. Sometimes the outside plate is omitted and a detailas shown in is used. Little difference is seen in thegeneral detail. Por purpose of erection the field rivets areplaced in the end post. The only apparent disadvantage in tJiisdetail is the absence of a plate to hold the joints in align-ment . shows another
. Details of riveted railroad truss bridges . ld the two members in line. An extra plate the same sizeas cover plate is also riveted over the end of the two aids in holding the two members In line and protects jointfrom the deteriorating influences of the weather. Sometimes the outside plate is omitted and a detailas shown in is used. Little difference is seen in thegeneral detail. Por purpose of erection the field rivets areplaced in the end post. The only apparent disadvantage in tJiisdetail is the absence of a plate to hold the joints in align-ment . shows another detail almost identical with thatof except that there is an irregular-shaped plate rivetedon the outside of the two members instead of a plain plate. -29- No advantage can be claimed for this detail on account of thedifficulty which will result in laying out and constructing thisplate in the shop. ITo doubt the appearance, isslightly improvedbut this is hardly worth the extra expense incured. Not with- OOOOOOQO \ ^Q^\ o o o o o o o \. standing this fact however this form of detail seems to have metfavor with a number of bridge companies. The American BridgeCompany use only the single large gusset plate on the inside. Oh account of the very few different details usedfor this connection, the selection of a standard detail is avery simple matter. would be the detail chosen. -30- Intermediate Post. The simplest form of intermediate post consists of twochannels held back to hack hy means of plates or lattice order to make any kind of connection with the top chord it isnecessary to cut the flange away. A hetter form is to have theflange turned and 49 show these two details. EI □ □ The latter detail is hetter on account of the additionalstrength gained hy not cutting the flange. The out side measur-ments can remain the same. The one objection to turning theangles in ^ is the difficulty found in riveting the la
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Keywords: ., bookcentury1900, bookdecade1900, bookiddetails, booksubjecttheses
