There is no difference. Different suppliers and contractor describe the same situation with 3R or 3D. Here is how to think about it.
A piping segment is formed or bent at a radius. The radius is measured at the centerline of the bend. The radius of the bend centerline is 3 times the nominal diameter of the piping segment being bent.
3R means the bend radii is three times the nominal pipe diameter.
3D means three times the nominal pipe diameter is the bend radii of the piping segment.
Caution don't begin to convert 3R to 1.5D. Not applicable with this terminology. Standard long ells can be purchased with 3R bends, being 10 inch pipe ells have a bend radii of 30 inches.
3r + 3r + 2t = 6r + 2t
7r = 3r - 527r (- 3r) = 3r - 52 (- 3r)4r = - 524r / 4 = -52 / 4r = -13
(3r - 2)(3r - 2) or (3r - 2) squared.
3r+10=5r-46 --> add 46 to both sides 3r+10+46=5r-46+46 3r+56=5r --> subtract 3r from both sides 3r+56-3r=5r-3r 56=2r --> divide both sides by 2 56/2=2r/2 28=r
1/99 − 1/100 = 1/9900
Need more information, but here are some examples for pipe elbows; you need to enter the elbows' centerline radius: 10" steel pipe with a 2R or 10" radius: if it is a 90 degree ell C/L-to-END is 10"; for a 76 degree ell it is 7.81" 10" steel pipe with a 3R or 15" radius: if it is a 90 degree ell C/L-to-ENC is 15"; for a 76 degree ell it is 11.72" The way to calculate this is to draw a right triangle with the smaller angle being 38 degrees (half of the 76 degree angle). The length of the triangle's "side adjacent" to the angle will be the length of the ell's centerline radius (15" in the case of the above 3R elbow). Multiply the tangent of the angle of 38 degrees by the length of the ell's centerline radius to get the length of the ell's "centerpoint-to-end" length.
3r + 3r + 2t = 6r + 2t
7r = 3r - 527r (- 3r) = 3r - 52 (- 3r)4r = - 524r / 4 = -52 / 4r = -13
5
how do i solve -3r+3r=-6(7+7r)-7(4-7r)
3R is Recycle,Reduce and Reuse
(3r - 2)(3r - 2) or (3r - 2) squared.
3r+10=5r-46 --> add 46 to both sides 3r+10+46=5r-46+46 3r+56=5r --> subtract 3r from both sides 3r+56-3r=5r-3r 56=2r --> divide both sides by 2 56/2=2r/2 28=r
(3r - 8)(3r - 8)
Exactly as in the question: 3r-1
3R stands for reduce,reuse and recycle...XD
3R stands for reduce,reuse and recycle...XD