Answer / yogesh jadhav

as per IS 456 2000
development length formula is Ld=0.87fyd(dia)/4tbd
tbd for various concrete is M20=1.2 m25=1.4 m30=0.5 m35=1.7
m40 and above=1.9
for deform bars 60%increase the value of tbd for compression it is increse by 25%
for example m25 grade concrete and fy 415
ld=0.87*415*D/4*1.4*1.6=40.29D
for m25 and fy=500 ld=48.54D approx 50D
anchorage length=Ld+2D
straight anchorage length=SAL=AL+8D

Answer / sagar tiwari

lap length formula=d*50=mm

for example=12*50=600mm is the lap length of 12 mm bar

(d is the dia of bar)

Answer / sjtbehera

Lap length decided by devlopment length of the steel and grade of concrete. 50D generally taken as thumb rule in m20 grade. In m25 grade it is 41d.

Answer / bunty sharma

Developing length generally depends on the grade of concrete and grade of reinforcement.And it is decided by the given formula on the basis of IS code;456 :2000
Ld=0.87fyd/4tbd

Answer / bhushan08

46D
Where D is the dia of steel bar,

Answer / harshit

IN horizontal lap is 39.5 in vertical lap is 49.5 in m25 grade

Answer / shekarpuppala127

49d where d is dia of bar

shear stress where is max.min in beams?

2 Answers  

Adout concrete

1 Answers   Bhel, TATA,

What is reinforced concrete?

0 Answers  

use 1:1.5:3 concrete footing size 9'9" *9'9" and square 12" and also trapezoidal 22" use of 4 columns. calculate how much amount f concrete use. and also tell me the details about course aggregate and fine aggregate and cement bags use .(note; 20mm coures aggregate use)

1 Answers   CMS,

tensile strength of shuttering ply wood=?

2 Answers   L&T,

pls tell me , what is the density of cement when normal packed

4 Answers  

cause of cylinder test failure

0 Answers  

Critical Path Method is...

0 Answers  

What is the wall thickness of NP-3&NP-4 hume pipe as per I.S code

0 Answers   Private,

polavaram project is situated inwhich place?

8 Answers  

What is the basis of choice for cement sand plaster in ratio 1:4 and 1:6 on interior walls of a residential apartment.

3 Answers   Gammon,

what cement consumction plaster 15mm think per sqmt 1:3&1:6 how much kg.

3 Answers