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A cylindrical concrete tank, 30 m external diameter, is to be prestressed circumferentially by means of high-strength steel wire (E, = 2 x 105 N/mm2) jacked at 4 points, 900 apart. If the minimum stress in the wire immediately after tensioning is to be 450 N/mm2 and coefficient of friction is 0.5, calculate :
(a) The maximum stress to be applied to the wires at the jack, and
(b) The expected extension at the jack.
Soil Classification: Based on particle size, the soils can be classified as under, adopting the IS soil classification system: 0.002 0.075 0.425 2.36 4.75
Asolid circular shaft of 25 cm diameter is to be replaced by a hollow shaft .The ratio of external to internal diameters being 2to1.Find the size of the hollow shaft if the maximum
I have building 50 m * 53 m 3 floors without expansion joint in basement what are opinion please ? thanks
The thickness of a saturated specimen of clay under a consolidation pressure of 100 kN/m 2 of is 24 mm and its water content is 20%. On enhance of the consolidation pressure to 20
Example. With a surveyor compass the angles observed in traversing the lines AB, BC, CD, DE and EF are as. Compute the included angles and indicate them in a neat sketch.
Reason in checking the ratio (i.e. design flow to full-bore flow > 0.5) in circular pipe design For checking of self-cleansing velocity for pipes, there is another criterion t
A square group of 9 piles was driven into soft clay extending to a large depth. The diameter and length of the piles were 30 cm and 9 m respectively. If the unconfined compression
Your home mortgage is $300,000 for 30 years with a nominal annual rate of 7%. The monthly payment is most nearly: Solution: n = 360 months interest = 7%-annual ÷ 12-months/year
why we perform survey work from whole to the part?
Define the term - pre- tensioning It is a method of prestressing in which tendons are placed, inside ducts or passages provided in concrete, after concrete gains sufficient str
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