 | Percy Gaillemard L. Smith - 1876 - 260 pages
...should be supported at such small intervals that it need not be too large for economy or convenience. It has been found by experience that these objects...with longer principal rafters, roofs such as that in Figs. 385 to 388 must be used. CHAPTER XV. ROOF COVERINGS. General Remarks. — Eoofs are covered with... | |
 | Henry Fidler - Construction industry - 1891 - 322 pages
...should be supported at such small intervals that it need not be too large for economy or convenience. It has been found by experience that these objects...with longer principal rafters, roofs such as that in Figs. 80 to 83 must be used. CHAPTER III. ROOF COVERINGS. General Remarks.—Eoofs are covered with... | |
 | Building - 1891 - 324 pages
...should be supported at such small intervals that it need not be too large for economy or convenience. It has been found by experience that these objects...with longer principal rafters, roofs such as that in Figs. 80 to 83 must be used. CHAPTER III. ROOF COVERINGS. General Remarks. — Eoofs are covered with... | |
 | Calvin Franklin Swingle - Factories - 1913 - 456 pages
...to draw the principal rafters in position, ascertain their length, divide them into portions 8 ft. long, and place a strut under each point of division. By this it will be seen that a king post truss is adapted for a roof, with principal rafters 16 ft. long — ie, those having a span... | |
 | Walter Noble Twelvetrees - Building - 1915 - 352 pages
...should be supported at such small intervals that it need not be too large for economy or convenience. It has been found by experience that these objects...longer principal rafters, roofs such as that in Fig. 9 must be used. Further consideration will be given to roofs which form a feature in the design of... | |
| |
... convenience or economy. 3. The tie beam should be supported at such small intervals that it need not be too large for economy or convenience. It has been found by experience that these objects can be attained by limiting the distance between the points... 