The Design of Simple Roof-Trusses in Wood And Steel. With An Introduction to the Elements of Graphic Statics
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In our eReader you can find the full English version of the book. Read The Design of Simple Roof-Trusses in Wood And Steel. With An Introduction to the Elements of Graphic Statics Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Design of Simple Roof-Trusses in Wood And Steel. With An Introduction to the Elements of Graphic Statics
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To quickly assess the difficulty of the text, read a short excerpt:
Two 3^" X 2i" XtV" angles have an area of 2 X 2.43 =4.86 square inches.
Angles with 22" legs do not have as much bearing for purlins as those with longer legs, and sometimes are not as economical. In this case, two 4" X 3" Xt^b" angles having an area of 4.18 square inches will safely carry 34500 lbs., making a better and more economical combination than that tried above. This combination will be used.
Thus far it has been assumed that the two angles act as one piece. Evidently this cannot be th...e case unless they are firmly connected. The least radius of gyration of a single angle is about a diagonal axis as shown in 98 ROOF-TRUSSES.
Table XII, and for a 4" X 3" X A" angle its value is 0.65.
If the unsupported length of a single angle is I, then in order that the single angle shall have the same strength as the combination above, — r- must equal = 9.4, or ' 0.65 ^ 1.27 ^ ^' / = 6'. I. Practice makes this, length not niore than f (6.1), or about 4 feet. Hence the angles will be rigidly con- nected by rivets every 4 feet.
What to read after The Design of Simple Roof-Trusses in Wood And Steel. With An Introduction to the Elements of Graphic Statics?
You can find similar books in the "Read Also" column, or choose other free books by Howe, Malverd A. (Malverd Abijah), B. 1863 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Two 3^" X 2i" XtV" angles have an area of 2 X 2.43 =4.86 square inches.
Angles with 22" legs do not have as much bearing for purlins as those with longer legs, and sometimes are not as economical. In this case, two 4" X 3" Xt^b" angles having an area of 4.18 square inches will safely carry 34500 lbs., making a better and more economical combination than that tried above. This combination will be used.
Thus far it has been assumed that the two angles act as one piece. Evidently this cannot be th...e case unless they are firmly connected. The least radius of gyration of a single angle is about a diagonal axis as shown in 98 ROOF-TRUSSES.
Table XII, and for a 4" X 3" X A" angle its value is 0.65.
If the unsupported length of a single angle is I, then in order that the single angle shall have the same strength as the combination above, — r- must equal = 9.4, or ' 0.65 ^ 1.27 ^ ^' / = 6'. I. Practice makes this, length not niore than f (6.1), or about 4 feet. Hence the angles will be rigidly con- nected by rivets every 4 feet.
What to read after The Design of Simple Roof-Trusses in Wood And Steel. With An Introduction to the Elements of Graphic Statics?
You can find similar books in the "Read Also" column, or choose other free books by Howe, Malverd A. (Malverd Abijah), B. 1863 to read onlineMoreLess
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