Answer / sk

1.vibrators are used to compact the concrete placed to make
it homogenous mass removing air voids present in it.2.0.2
bags per sq.m 3.no.because it falls in critical zone
4.higher dia bar dia considered 5.isolated footing is a
footing having single column and cg of column and footing
pass from same point.

Answer / kamlesh chauhan

(1)pin or needle vibrattor is used for beams,columns and
slab bottom for vibration of concrete,while plate vibrators
are used on surface to compact the conc in layers.(2)cement
consumption is 0.12 bags.(3)question is not cleared(4)bars
are laps as per lower level for which casting of columns
are over.

Answer / kartik khanna

vertically no. of bricks used of dimensins 19*9*9cm along
with a key mortar dimension of 10mm with each brisk is 10

slly horizontally the no of bricks used will be 10

length of cement used will be 10cm vertically and 8cm
horizontally

so area of cement used is 80 cm^2

1m^2=28.8 bags of cement
.8 *10^-2 m^2=.2304 bags of cement

but if we take mortar of 1:3 ratio instead of cement then
the cement used will be .2304\3=.0768bags of cement

Answer / modipraveen

Hi, I am answering a answer for each question.

Pin/ Needle vibrator are to remove air/void in concrete
generally its used for deep thing like Beam, columns and flat
slab and even slab where heavy reinforcement is used.
Plate vibrator are used to have rigid base like grade slab,
RCC/CC roads.

in M-20 Grade of concrete what do u mean by (M)

15 Answers   GVK,

---

What are the precautions needs during concrete pouring in very hot weather?

1 Answers  

---

Basic civil interview questions 

0 Answers   IOCL, SSC,

---

what is a well

0 Answers  

---

For removal of formwork of simply supported slab / beam from where to start the deshuttering? ( Max Bending moment of the simply supported beam is in the center hence is it required to start from the supports?)

0 Answers  

---

---

which type of binding wire gauge using gulf countries

2 Answers   Al Rashed,

---

How to Determine the Quantity of Cement Sand , Aggregete and Reinforcement Bars in 30 feet X 40 Feet and Height is 4 Feet .

1 Answers   Hiranandani, KEC,

---

why hanger rods are used in beam

3 Answers  

---

stub column means

5 Answers  

---

How can i find number of brichs required for given quantity of wall in m^3..

5 Answers   vasanth construction,

---

is their any instrument which can detect steel after casting of slab,etc. for verification of steel in slab,etc.

1 Answers  

---

a)tell density of steel , concrete, bricks , sand and aggregates.? b) what is knife test for wooden doors ? c) what is the meaning of term abrasion? what is tested in it? d) why pile foundation is provided in BCS?e) By total station what activities can be performed and on what principle it works? f) what is creep?

4 Answers  

---