The bond of prestressing wires in Hoyer’s system can be formed by ___________

The bond of prestressing wires in Hoyer’s system can be formed by ___________ Correct Answer Helical crimping

Bond of prestressing wires may be considerably improved by forming surface indentations and by helical crimping of wires in Hoyer’s system, strands have considerable better bond characteristics than plain wires of equal cross sectional area supplementary anchoring devices are required when single wires of larger diameter are used in the pretensioned units.
Bissoy MCQ

Related Questions

Calculate vertical prestressing force if wires of 5mm diameter with an initial stress of 1000n/mm2 are available for circumferential winding and Freyssinet cables made up of 12 wires of 8mm diameter stressed to 1200n/mm2 are to be used for vertical prestressing?
The Hoyer’s system of prestressing proves to be economical for ___________
The Hoyer’s method of prestressing is done by ___________
Study the following statements.
1. A bond formed by the transfer of electrons between atoms of the element is called ionic bond.
2. A bond formed by sharing of electrons between atoms of the elements is called covalent bond.
Which of the statements given above is/are correct?
A rectangular concrete beam 360mm deep and 200mm wide, is prestressed by means of fifteen 5mm diameter wires located 65mm from the bottom of the beam and three 5mm wires, located 275mm from top of the beam, initial tension stress is 840n/mm2. Calculate prestressing force?
Calculate the number of wires which are subjected to prestressing force of 471.5kn, the section adopted is 50000 using 7mm diameter high tensile wires initially stressed at 1100n/mm2?
Calculate the spacing of 5mm wires having a loss ratio of 0.075, compressive stress is 10.75n/mm2, 5mm diameter wires stress is 1000n/mm2, 12 wires of 8mm diameter are stressed to 1200n/mm2(Nd = 840n/mm2)?
A bond gets matured in 10 years . invested TK. 42,000 in this bond and received Tk. 105000 once the bond matured . If the bond was under simple interest . then what was the rate of interest per annum?
If the bond length of C-Cl bond in chloromethane is 178pm, what will be the probable bond length of C-Br bond in bromomethane?
Propositions as regards the liability of the surety under the surety bond are:
1. The liability of the surety is mutually exclusive of the liability of the accused under his personal bond.
2. The liability of the surety is contingent on the liability of the accused under his personal bond the liability of the surety.
3. is limited to the amount of the surety bond.
Now which of the following is correct