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July, 1909 --Spar DecKw Saiehtieinmeeteeen sent TAE Marine. REVIEW __ Sio0eé TAN &-- 1 --ToP-- and material are considered the same and have a value of 26 tons per sq. in. The beam and frame are considered one piece from the center keelson to center keelson and where the frame is cut, a number of rivets are put in equal to the area of section of the material lapped or butted ti- gether. This rule is considered throughout the ship and a table of rivets for standardized materials is supplied the men to assist in laying out the work. The number of rivets, according to calculation, is one 34-in. diameter riv- et per in. for depth of web. Example:--5-in. channel requires five Tivets, 6-in. channel requires 6 rivets, 7-in. channel requires 7 rivets, 8-in. channel requires 8 rivets, 9-in. channel Tequires 9 rivets, 10-in. channel re- Ouiree 10 rivets, il-in.. channel" re- quires 11 rivets, 12-in. channel re- quires 12 rivets. Where the channels are increased in thickness over the Standard sizes the diameter of rivets is increased. Molds are made in the mold loft for all beam connections, which are carefully considered before passing On to the ironworkers. a Al Cae Fig. 2 shows an arch beam connec- tion to the ship side, which is built up with plate and angles, forming a deep web from side to side. The bottom part of the beam is riveted to the side tank top and con- nected to same with a number of rivets equal to the area of section of the web frame. When the web frame and arch beam are riveted up in the ship they form a belt in one piece equal to any section of the web frame through a line of rivet holes--its unavoidable weakest section. Between the arch beams the charinel beams are short, only running from the ship-side to the hatch opening, but the same number of rivets are put in these short beams. In this case the number of rivets might be reduced, say, to 8 diameters of the rivet. The side launching on the great lakes is a valuable test on beam con- nections. Beam brackets have never shown any damage through this system of launching nor has there ever been | any report of weaknesses of beam ends on the great lakes. : Zek In Conclusion. stevenson Taylor, 4 the con- clusion of the reading of the paper, said that his experiences in Detroit had been of the most delightfuf char- acter, that he had renewed old ac- quaintanceships and made many valu- able new ones and that he had learned something as well, having seen a back action engine in actual operation. Upon motion of Mr. Babcock a res- olution of thanks to everyone asso- ciated with the entertainment of the members was adopted. In conclusion, President Bowles stated that it was his misfortune never to have been in Detroit before. He had seen many things to make him. proud in his visit to the lakes and that the only thing comparable to it was the building of the American navy. He stated that the enthusiasm of those in attendance added to the regrets of those who were absent will arouse such a volume of interest as to result in further meetings of the society along the great lakes, THE NEW CLERMONT. Construction work on the replica of Robert Fulton's first steamboat, the Clermont, which will play an import- ant part in the Hudson-Fulton celebra- tion next fall, is progressing rapidly at the yards of the Staten Island Ship- building Co. at Mariners' Harbor, Staten Island, where it is being built. The -boat will be ready for launching early next month and the interior work and the installation of the en- gine will be completed after it is afloat. The Clermont will be ready in ample time for participation in the celebration. Sandwiched in between a modern commercial scow on one side and a palatial ocean going private yacht on the other, the Clermont certainly looks the part of the strangest craft seen around New York in a hundred years. At present her keel is laid, her plank- ing is on, her bottom boards are placed and the construction of the interior has been begun. The bottom of the boat is absolutely flat for its entire length, the sides are almost perfectly perpendicular and the bows are sharply wedge-shaped. Most of the parts of the reproduction of the en- gine have been cast and are about ready for installation. The strange looking old fashioned boiler is just being finished and but for the instal- lation of certain safety devices now required by law but unknown in Ful- ton's time the Clermont will be seen exactly as she was on Aug. 17, 1809, when she made her first trip.