What is an I joist?
What will be an ideal response?
?Another type of load-bearing structural beam is the wood I joist, sometimes referred to as T-JI. Their characteristic "I" shape, commonly found in steel beams, provides high bending strength and stiffness characteristics. This allows them to span greater distances using substantially less material than would be required for solid lumber spanning the same distance. I- joists are made of softwood veneer bonded top and bottom flanges connected by a thin composite panel web. The flanges are commonly made of laminated veneer lumber and the web of either plywood or oriented strand board. Flanges are finger-jointed to make use of shorter wood scrap during manufacturing. The flanges are grooved to receive the veneer web, and assembled under pressure with waterproof glue. Wood I joists are manufactured in various thicknesses with depths from 9-1/4 to 24 in., and lengths up to 80 feet. I joists are used extensively in residential construction and are finding increased use in commercial applications as well. Their light weight makes them easy to handle and precludes the need for costly handling equipment.
You might also like to view...
¿En qué rango de temperatura funcionan los sistemas criogénicos?
a. desde 212 °F (100 °C) b. por debajo de los - 100 °F (-73,33 °C) c. -60° a 0° (-51,11 °C a -17,77 °C) d. 0° a 60° (-17,77 °C a 15,55 °C)
In the designator 600S162-54, the 54 represents _____.
a. web depth b. base steel thickness c. type of framing member d. flange depth
Metabolic bone disease (MBD) is commonly seen in young iguanas provided
A. A diet high in calcium B. A diet low in calcium C. An inappropriate wavelength of light to synthesize vitamin D3 D. A and C above E. B and C above
As many as two parts, if very small, can be drawn on one sheet of paper.
Answer the following statement true (T) or false (F)