93 [ 23 ] 



longitudinal trimmer in the west v/ing, one in the west connecting range, 

 four in the Ubrary, three in the central hall, three in the lecture-room, 

 and two in the east connecting range. 



Second atory. — The timbers in the floor of the second story will be 3 

 by 12 inches, set 16 inches from centre to centre. The girders will be 

 twelve inches square (12 by 12 in.) running longitudinally through the 

 museum. The trimmers and trimmer beams will be 5 by 12 inches. 

 The timbers will be of the best white pine. 



Toivers, 6^c. — All the floors of the towers will be of the best white pine 

 timber, 3 by 12 inches square. There will be seven floors in the higher 

 central front tower; five floors in the lower front tower; four floors in the 

 central rear tower ; seven floors in the octagonal tower ; seven floors in 

 the campanile tower ; five floors in the tower of the west wing; two floors 

 in the porch of the chemical lecture-room. 



The floor-beams of the galleries of the museum, library, and lecture- 

 rooms will be 3 by 10 inches, of the best white piue timber, set 16 inches 

 from centre. The girders of the gallery fronts, 8 by 12 inches. 



All these timbers and girders will be firmly anchored to the walls. 



All the floors in the building will have one row of herring-bone bridg- 

 ing of joists, 3 by 4 inches, for every 12 feet of length of beam. 



Columns. — There will be 56 columns, six inches square and twenty- 

 two (22) feet high in the library, set per plan. 



In the great lecture room there will be 10 columns of iron, twenty- 

 seven (27) feet high. (Plan No, 1.) 



In the museum there will be 120 columns, six inches square, and 

 27 feet high. 



Roofs. — The roof of the central building to be framed with a tie beam, 

 one king post, two queen-posts, and four strutts. 



The timbers in all of the frames will be of the following forms, dimen- 

 sions, and materials : 



'J'ie-beam, 6 by 15 inches, of the best white pine. 



Two rafters, 6 by 12 inches, of best white pine. 



Kingpost, 6 by 8 inches, of best white oak. 



Two queen-posts, 6 by 6 inches, of best white oak. 



Four strutts, 6 by 8 inches, of best while pine. 



The roof plate will be 3 by 12 inches, of best white pine. 



The purhues will be of the best white pine timber, 3 by 10 inches, set 

 three feet ^3 ft.) from centre to centre, quartered into the rafters two in- 

 ches, (2 in.) and kept from slipping by brackets of white pine eighteen 

 inches (IS in.) in length, firmly fastened to the rafters. 



The roof of the east lecture room will be flamed in the same manner 

 as that of the central building, of timbers of the same size and material. 

 Its span will be forty-nine feet, (49 ft.) and the number of frames seven 



(7.) ^ . , 



The roof of the east connecting range will also be framed in the same 

 manner, of timbers of the same size and material. The number of frames 

 in it will be six (6.) 



The roof of the western wing will be framed in the same manner, and 

 with timber of the same description, but of the following dimensions : tie- 

 beam, 4 by 12 inches ; rafters, 4 by 10 inches ; king-post, 4 by 8 niches ; 

 queen posts, 4 by 6 inches; strutts, 4 by 6 inches; purlines, 3 by lU 



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