How to do visual checks on the reinforcement bar at site?
When the base of the object is inaccessible we use an indirect method of surveying. A tachometer is used to measure the distance between the two points with the use of an analytical lens. There are two methods Stadia method: In this method diaphragm of the tachometer are provided with two stadia haiRead more
When the base of the object is inaccessible we use an indirect method of surveying.
A tachometer is used to measure the distance between the two points with the use of an analytical lens. There are two methods
- Stadia method: In this method diaphragm of the tachometer are provided with two stadia hair .the difference between staff intercept gives stadia reading.
- Tangential Method: in this method, the tachometer is not provided with stadia hairs, the reading is taken by single horizontal hair.
D=(f/L)S + (f + d)
D=horizontal distance between tachometer and stadia rod.
f/L = multiplying constant
S= Staff Intercept
Elevation formula:
v = KSsin(2©)/2 + Ccos(2©)
© = Theta= Angle of elevation or depression.
K & C = Tachometric Constant
substance method and tangential method is also used to find the elevation between two points.
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nikeetasharma
The test of reinforcement bar at site are as follows; The dia of reinforced bar should not vary. Bars should not be brittle in nature.It should no break in pieces during bending. The pitch length between the twist should be 8 - 12 times that of the nominal dia of bar. The length of the bar should beRead more
The test of reinforcement bar at site are as follows;
- The dia of reinforced bar should not vary.
- Bars should not be brittle in nature.It should no break in pieces during bending.
- The pitch length between the twist should be 8 – 12 times that of the nominal dia of bar.
- The length of the bar should be between 11 to 12 meters.
- Reinforced bars should be grey in color.
- It should not be corroded.
- Bars should be free of grease, paint and other material.
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