Concentric 90 degree bends

Concentric 90 degree bends. Next rotate conduit 180° level, place mark #2 in line with front edge of shoe clamp and make second bend. Place the bender on the conduit with the bender’s hook facing the free end of the tube to be. VAT £62. Equal Tube Tees. 5in. 4 inches. DOWNLOADS. MTR REQUEST. Length (6. An old timer showed me a trick for doing perfect concentric bends: After making the first bend, mark a wide elastic suspender in 9 equal increments along the bend, then simply stretch it out a little more for each concentric bend, and bend 10 degrees on each mark. Also i will post another cou Two equal bends to avoid an obstruction. 11 is identified as the ___. Pipe system involves various components, including concentric 90 degree bends and are made from different materials. Smith power vent gas water heaters are equipped with an electric blower fan that is installed on top of the water heater, which requires an electrical outlet to be close to the water heater. www. Dec 8, 2023 · Types of Bends. Jun 25, 2021 · Today at Warhammer Electric we will be going over how to Bend a Kick 90 Degree on 1/2 EMT the process is similar to how you will do all sizes of pipe. ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91 Tel: 708. ARROW Indicates start of bend. Offsets. What is the radius of the second pipe? I will show you how to Bend Professional looking Concentric bends Quick and Simple. Might take me 10 minutes to bend one concentric not even counting all the math required to lay out your spacing of bends. 1 standard. You can put the conduit back in the bender and overbend it slightly to compensate for the spring back. The Flange Adapter is used to connect flanged pipe or fittings with Class 125 flanges to Class 250 flanges of ANSI B16. Then divide that by the amount of shots (we’ll say 2 degrees per shot, so 90 shots to go 180 degrees). Study with Quizlet and memorize flashcards containing terms like 90 degrees bend, back-to-back bend, Concentric bends and more. I go through the whole process step by step. 0106. Line up the Arrow on the bender with the mark on the conduit and bend to 90°. DISTRIBUTION. This is the amount of straight conduit required to make the bend. Factory elbows are used to save time when installing runs of large conduit. Original grooved system (OGS) ends eliminate pipe end preparation for the stainless steel fittings. Schedule 10 and Schedule 40 Butt Weld Fittings. Saddles and offsets typically have the same number of bends. Always remember, practice is key to mastering these tools and commands. Follow the steps from the 90° Stub-Up section to create the ideal bend for the connection on the first side. Now place mark #1 in line with front edge of shoe-clamp, and make first bend. 015625 is _____. Concentric 90-degree bends are radius bends that are bent with a common center (or pivot point) and lay concentrically around each other, spaced equal distances apart. The distance from the center point to the edge is the and the distance through the center to the other side is the diameter. How to Make a Bend in AutoCAD two kick bends in opposite directions. To prevent flattening when bending larger diameter PVC conduit, use. Napco. This is a simple example and of course doing the real thing requires the proper know how and tools. Bends & Base Bends 4 Concentric Reducers 10 Crosses 11 Eccentric Reducers 12 Straight Flare Pieces & Flare Bends 13 8 90 5. Do the math, a 90 degree bend is "3. Fill the number of valves, fittings in the piping system. Découvrez tous les produits et les données techniques. 57 x 4” = 6. £ 20. 60 to 180-degrees of bend, depending on the type of bends. V11 45º Elbow Size Dimensions Weight Dimensions Weight Nominal Actual Outside Diameter C to E Approx. 1 bend is always 9 times faster than 9 ten degree bends. Concentric Bends 6 1. Size: 90 DEGREE. S. Diameter in inches, with 2 strut, 1 on each side, plus 1 conduit diameter, or 1/2 for each side, = 160 x 12 + 1-5/8 x 2 + 2 x 2 = 1925. . au. back to back bend is any bend that needs a 90° Back to Back Bendbend located a predetermined distance away. 2. The shoe of the bender pulls to one side just a bit. Bending conduit effectively starts with understanding the two primary types of bends: Simple Set Radius Bends: This involves bending a piece of conduit to a set angle, like 90 degrees, which produces the same radius every time. Reducing Pulled Tee. Study with Quizlet and memorize flashcards containing terms like Point W in Figure 106. STAR Indicates the back of a 90° bend. Size: 4" x 4" x 4". 6" x 6" x 4" Gasketed SDR 35 Injection Molded Virgin PVC Reducing 45 Degree Wye. Two equal bends made to avoid an obstruction blocking the run of conduit. 1 class 125. The size of the flow separation zone at the inner wall of the bend was determined from dye visualization data and confirmed using the mean streamwise velocity data. 4. The distance from the end of the straight section of conduit to the bend, measured to the center line or to the inside or outside of the bend or rise. CATALOG. V11 No. tan (a/2)*s . Available in ANSI Schedule 10S or Schedule 40S, type 304L or 316L. When it comes to conduit bending, one of the fundamental you need to master is making a 90-degree bend. Step 3. A large bending shoe that is designed to make 90 degree bends in conduit. 14") from the back of the 90. Instead, you can use a long sweep of 90 or two 45’s at minimum. Ninety-degree bend. Tube vs. 375 2. 594. two equal bends made to avoid an obstruction blocking the run of the conductor. 14) times the radius (C = 2nR). Example: To make a 90° bend with a 4” center line radius: Multiply the radius (4”) by 1. Another name for the rise in a section of conduit at 90 degrees. (sighting down the bender) 5. Mastering a 30 degree offset is essential to developing as a well rounded electrician. and more. This assumes the stub end is at a right angle to the preceding run (aligned couplings). 44 0. Flow characteristics of the bend with no vane are compared with those of bends having 1 or 3 vertical vanes. Remember: Heavy Foot pressure is critical to keep the EMT in the bender groove and to prevent kinked conduit. a large bend formed by multiple short bends of shots. What are the concentric bends of a conduit? Concentric bends are a set of conduit bends that have a common center point, but have different centerline radii. Key Features of Elbows: Fixed Angle: Elbows come in fixed angles, commonly 90 degrees and 45 degrees. V11 45° Elbow C to E C to E C to E No. , The minimum bending radius for 1/2in rigid conduit is ____. VAT Select options; CAP CONCENTRIC REDUCER R 29. A saddle bend is counted as. 01 Flanged Fittings Study with Quizlet and memorize flashcards containing terms like 90 degree bend, Offset, Concentric bends and more. 2811 MFG #: G304. 28). The Best Coupling Ever Built Has Arrived. The problem is that the radius of the bend varies with the size of pipe so instead of using the bender to determine the radius it must be matched to that of the largest How to use an EMT conduit bender to bend conduit 90 degrees, bend an offset, bend back to back 90 degree bends, bend a 3 point saddle bend, and how to straighten a bend. The fractional equivalent of the decimal 0. Another name for the rise in a section of conduit at 90°. , Point X in Figure 106. Don’t be discouraged by initial hiccups. Enter consistent dimensions (i. Alpha Flue - Concentric 90 Degree Flue Bend 6. Swept Tube Tee - 316. The Flange Adapter is rated for 250 psi 15 Multiple choice questions. info@weldbend. 70 excl. Bend 10° at each line. From small box offsets to seriously intricate bends, offsets can be a daunting task, even for seasoned electricians. Feb 6, 2024 · They typically have a 90-degree angle but can come in 45-degree configurations for sharper turns. According to the NEC how many quarter Bends are allowed in any one conduit run between outlet boxes. Next, reverse the conduit and reinsert into the bender, lining up the third mark to the arrow. 1/64. VAT Select options; ECCENTRIC REDUCER Obtain distance “M” from table A, and measure this distance from mark #1, and place mark #2. You are making a concentric bend and the radius of the first pipe is 16 inches, the OD of the first pipe is 2 inches, and the spacing between pipes is 3 inches. Jul 15, 2015 · To make parallel runs, advance/retard each bend by. View Details. The first and only coupling designed for high-performance impact guns with fabrication-friendly fittings that deliver unmatched productivity. Leg Length: The longest part of a ninety degree bend. For rigid with all the conduits 2" or less, the use of the 2" shoe for all of the conduits works great. We can furnish pipe or fittings with Class 250 flanges, on special order in limited configurations. This method also allows bending concentric bends. Pipe: A is a closed, curved line with all points equal distant from the center. (Diameter of tank + spacing off tankx2) x pi will give you the length of your piperun going from on side of the tank to the other. Welcome to the new Weldbend website! Find out the kick you need (say 10"), multiply that distance by 1. Interaction directe avec le catalogue de produits de Weldbend. Check your bend against a wall or a corner to make sure it really is 90-Degrees. 2 DN50 60. I'd also recently read that you have to add 1/2 the OD to make up for the fact that your measuring from the back of the 90. Kick: A bend of less than 90 degrees placed in a conduit to change direction. ® REGISTERED TRADEMARK OF STAR PIPE PRODUCTS STAR® PIPE PRODUCTS HOUSTON CORPORATE TOLL FREE 1-800-999-3009 FAX 281-558-9000 www. To do this, you will need to mark the bender at the center of a 22° bend. See Standard Dimensions. This may prevent you from having bends in your plumbing vent since the lower horizontal connection will slope toward the stack. 5 300 320 68 Normally straight length of pipe bends are between 300mm and 1500mm. For years, two basic models were the hand-bender standards: Benfield models are made of iron with markings on the heads that provide reference points for bend angles, and Gardner-style benders are made of die-cast aluminum with built-in spirit levels at the 45-degree and 90-degree positions to help make accurate bends. RIM NOTCH Locates center of saddle bend. 5" 89mm & 4" 102mm. Terms & Definitions; Field Routing; National Electric Code; Decimel Equivalents; Types of Conduits: Conduit Size Color Code for Rigid Conduit, ID and OD of Rigid Conduit; PVC Coated Conduit; The Dog Leg; Offsets & Kicks: Offset Multiplication Factors, Offset Bending Table with Developed Length, Parallel Offsets, Segmental Bent Offsets; Saddle Bending: Three Bend Saddles, Four Bend Saddles; 90 Plazmaman 6000 Series Aluminium Elbows. (Each) inches DN inches mm inches mm lb kg inches mm lb kg 2 2. Do not mix inside, outside, and centerline dimensions). **Albina takes no responsibility for the calculated results. Dev Length = 1. A 30deg kick has a hypotenuse of 10in. In this case 14” minus 6” = 8”. 7 51 0. The flue sections are joined using a simple push seal mechanism with two positive screw connections - reassurance that the joint Browse All Software >. A lead pencil doesn’t mark clearly on such finishes. If you put a no-dog on the tail of the pipe and bend it 15 times, more often than not the pipe will be out of plane. From the back edge of the 90° stub-up bend, measure the distance found in step 1 and make your mark on the conduit. 458. Sep 29, 2008 · If you have multiple sizes of conduit in a flat rack, you have to either bend all of the conduit on the same shoe or use concentric bends to avoid having the center to center distance change and lose rack space on one side of the 90. 40. Long radius bends are available with flanged joint ends only. 60 degrees to 180 degrees, depending on the type of bends. Also can be customized as per customer’s requirements. 00 inc. Welcome to the new Weldbend website! 22-1/2º and 11-1/4º Bends 7 Tees 8 Crosses 11 90˚ Base Bends 14 Base Tees 15 Base Drilling Details for Base Bends and Tees 18 Concentric Reducers 19 Eccentric Reducers 21 90º Long Radius Bends 23 Reducing Bends 90˚ 24 Blind Flanges 25 Wye Branches 26 True Wyes 27 Straight Flare 28 Flange and Flare 90º Bends (Standard and Long Radius) 29 For years, two basic models were the hand-bender standards: Benfield models are made of iron with markings on the heads that provide reference points for bend angles, and Gardner-style benders are made of die-cast aluminum with built-in spirit levels at the 45-degree and 90-degree positions to help make accurate bends. PDF Version. E-2 Mod 4 Learn with flashcards, games, and more — for free. (Each) C to E Approx. This is due to a couple of things. 83 Ex VAT £ 25. ) AMERICAN standard 54"-64" fittings are rated only 150 psi in AWWA C153. 625″. Sep 25, 2018 · How do I figure out how to match 90 degree bends with different size pipe? Answer: The only way to do it is with "concentric bends" where the bends are equal, not concentric. We've explained the process for these bends in another tutorial that you can find here. so wha All dimensions are to be rounded to . Add To Cart. 875 3. A saddle bend is counted as ______. if you enter an inside dimension for one input, enter an inside dimension for your other inputs. If you need a 90 degree bend 5 ft from the conduit's starting point, then the middle of your bend is going to be somewhat less than the 5-ft distance. At left side is a pipe equivalent calculator developed by OilGas Engineers. 67 ex. Remember, about the only place you get to hide "error" in concentric bending is in the ends A good bender (triple nickel or 884) and a craftsman can cut, thread, and bend the pipe, not bend, cut, and thread their pipe. creating a 90-degree bend are essential for more complex designs. Study with Quizlet and memorize flashcards containing terms like 90 degree bend, Back-to-back bend, Concentric bends and more. com. Mark the conduit 8” from the end. com Page 43 UCAT. 4 150 170 20. The developed elevation view shows the component in a The Flange Adapter is used to connect flanged pipe or fittings with Class 125 flanges to Class 250 flanges of ANSI B16. ATLAS. V10 No. Version Française Métrique. We offer wholesale concentric 90 degree bends to create a smooth channel for the pipe systems in both commercial and residential areas. V10 90º Elbow No. Scroll to the end of the page where you can find the total equivalent A. Jun 25, 2022 · The following procedure illustrates the procedure to bend a length of 3-1/2″ rigid conduit around a storage tank with an 80′ radius, or a 160′ diameter. Carbon Steel 90 Degree Bends. 60 10 130 6. Marking the conduit for precision bending. 414, and measure that distance (14. Study with Quizlet and memorize flashcards 90 degree bends around a round, square, and rectangular object; Offset and Rolling Offset bends; Three and Four Point Saddle bends; Compound 90 degree bends; Segment, Concentric, and Parallel bends; Gain & Take-up computations; Supports both U. 5 10. Given that the cosecant of 30deg is 2, determine the side opposite or how far off the surface the end of the kick needs to be. 5 times the pipe diameter, and in the case of the elbow, the radius of curvature is equal to the pipe diameter. Alloy Steel 45 Degree Bends. The Industry Leader in Carbon Steel Weld Fittings and Weld Flange Products from 1/2" thru 60". where "a" is the bend angle and "s" is spacing (centerline to centerline). DEGREE SCALES Indicates the angle when bending in the air. Benfield benders are made of iron, and markings on the heads provide reference points for bend angles. 57 for the Dev. After 18 shots at 5 degrees each you will have 90 with a 16? radius. Much longer. So, we did all this and came out too high. Common center lines are marked to eliminate difficulty in installaton. and metric measurements; Supports push-through bending Tel: 708. Also, a term used for conduit penetrating a slab or the ground. False. 3. First, find the circumference of the tank. The common name for a U-shaped 90-degree bend with a straight section of conduit between the bends is a ___ bend. components of flow in an experimental rectangular open channel bend. A large bend formed by multiple short bends or shots. Aug 19, 2022 · 1. Included in this range are: 90 and 45 degree bends Equal Tees Concentric and Eccentric Reducers BSP threaded fittings Flanges & Backing Rings Through our fabrication workshop and partners, we can offer bespoke fittings such as: Swept […] Formula used to find the adjacent side. starpipeproducts. 5 8. While many electricians will bend a 3 point saddle with a center bend of 45°, a better solution is to make that center bend at only 22° as the total degrees of bend required goes from 90° down to only 45°. [/ so is this a formula for multiple 90s on rack with no no kicks . The only difference is the radius of curvature of the bend is 1. Four. Begin in a half-kneeling position with the knee of the affected side on the floor, bent at 90 degrees of flexion. 5. Introducing the new Style 107V Rigid Coupling and new QuickVic™ Fittings. Study with Quizlet and memorize flashcards containing terms like The minimal bending radius for 3in rigid conduit is ____. Term. The maximum number of 90 degree bends allowed between pull points in a conduit system is _______. , ___ 90-degree bends are radius bends that are bent with a common center (or pivot point) and lay concentrically around each other, spaced equal distances apart. VAT. The telescopic flue kit provides a length of 350 – 500 mm, and flue lengths are available in 0. 90 Degree Tube Bends (UNI Dimensions) 90 Degree Tube Bends Long Radius (NZ Dimensions) Concentric Tube Reducers - 316. ANGLE ARROWS Indicates the angle when bending on the floor. £51. Segment Bend Concentric Bends Hickey bends are a series of segment bends (not to exceed 10° per bend) for sharper than standard code radius bends. Qty: Add to Cart. 90° Bends. When appearance counts, concentric bends may be the only way to go. Jan 9, 2024 · Bending Techniques How to Make a 90-Degree Bend. What is the radius of the second pipe? Feb 8, 2008 · 5) Place conduit in appropriate bender (hydraulic multi shot or Chicago type) and bend 5 degrees at each mark. Manufacturer: Alpha. 00 Inc VAT. No. 75" 45mm, 2" 51mm, 2. Use for stubs and saddle bends. Adjust accordingly if not. desired rise and take-up distance. The distance between bends is _________ inches. V10 90° Elbow No. To compliment our nominal bore tube range, we also supply all of the relevant fittings in Schedule 40. 3 Bend. • Basic bends include elbows, offsets, saddles, and kicks. Use a soft tip marking pencil. Description. The two dimensions an electrician must know when making a 90deg stub bend are the. Luckily, there’s an app for that! There is the degrees per 6” of your bend. Step 3: Mark the middle of the bend. Industry Standard Style 30° bend when handle is straight up Bigger Foot Pedal 40% larger Bigger Hook Sep 30, 2010 · Here's my conduit bending guide for bending a 90 degree bend in electrical conduit: EMT Electrical Conduit Pipe Bending - How to Bend a 90. Refer to table “B” to set proper bend angle. When you buy Tyler Union and our more than 400 employees are committed to a management system that defines quality and seeks continual improvement to provide products that meet or exceed our customer needs and industry standards. Click to enlarge. Material: Virgin PVC. Many hand benders have the difference number you need noted right on them. ) Long radius bends are not included in AWWA C110; they have center-to-face and radius dimensions according to ANSI B16. 1. 25 metre , 0. 5mm, 3" 76mm, 3. , The maximum number of 90 degree bends allowed between pull points is____. Some galvanized conduit finishes are greasy smooth. That will give you your bend spacing. Bending success with a hickey is directly proportionate to the operator’s bending skill. Concentric Flue System to suit all Alpha High Efficiency Boilers. This is probably the most common type of bend. Increase hip extension with the Hip Extension with Overpressure mobilization. Stainless Steel Hygienic 90 Degree Long Bends to BS4825 PT2 Grades 304 & 316L,Descaled & Dull Polished Stainless Steel Hygienic Concentric Reducers,Grade 316L Double Flanged Concentric Taper (PN16) 90O DOUBLE SOCKET BENDS DN L Mass (kg) 80 100 8. 5" 63. e. Study with Quizlet and memorize flashcards containing terms like 90° bend:, Back-to-back bend, Concentric bends and more. Fill in straight pipe length in feet. 1700. 14 times radius divided by two" in length. The blower pushes the exhaust and excess heat through the exhaust venting. You are making a 20-inch offset with two 30 degree bends. I can bend all those in “regular” 90’s in 10 minutes. Divide by one less than the amount of bends, for example 9 – 1 = 8 spaces. Experience the Difference. 5 200 220 33 250 270 48. Simply subtract the take-up, or 6”, from the finished stub height. Jul 12, 2007 · If a client wants it, no problem, we can do it that for you. Material Grades for Steel Pipe Bends. Tube Bends with Ferrule Ends. Provided by Elliott Electric Supply, distributor of EMT benders, EMT conduit, and other electrical supplies. 2000590. atlas-steels. The materials used depend on the type of fluids it will convey. To achieve a precise 90-degree bend, follow these steps: Jun 17, 2019 · Guide for concentric bends, performed with a hickey. • Segmented bends can be used to provide concentric bends with multiple conduit runs. Back-to-Back Bend 90° Bend “Dog Leg” Bend or “Kick” Leg Length Offsets Rise or “Stub-ups” Segment Bend Concentric Bends Hickey bends are a series of segment bends (not to exceed 10° per bend) for sharper than standard code radius bends. SKU: 29450123 Category: Flue Liners Tags: 20132059, 29450123, VOKERA 60/100mm Concentric 90 Degree Bend. Fax: 708. The degree of bend for each must be equal. the amount of travel method to monitor each bend. Table A. This bend is made up of two equal degree bends that To prevent flattening when bending larger diameter PVC conduit, use. Used for aluminium intercooler piping, radiator/coolant systems, overflow tanks, coolant swirl pots, fuel filler necks & exhaust systems. Gardner-style benders are made of die-cast aluminum and have built-in spirit levels at the 45-degree and 90-degree positions. Below is the steps to calculate a piping system equivalent length: Select a nominal pipe size, NPS. 96 – R 2,654. (sighting in-line with Feb 7, 2019 · In this video, we explain how to measure and determine the centerline radius of a 90-degree elbow. Elbow fittings are rigid and manufactured to specific angles, ensuring precise alignment in the pipeline. The Flange Adapter is rated for 250 psi 4" Gasketed SDR 35 Injection Molded Virgin PVC Straight 45 Degree Wye. 88 Thus, make a mark on the conduit 5 ft from its start point. Apr 28, 2023 · Bending a 3-Point Saddle. CARBON & STAINLESS STEEL BUTTWELDING FITTINGS •Weights. Ninety-degree bend is structurally similar to 90° elbow mentioned above. 5 2. To prevent flattening when bending larger diameter PVC pipe, use _____. Figure 1 shows three concentric bends produced from 2 VOKERA 29450123 Concentric 90 Degree Bend. 90 Degree BEND SHORT RADIUS R 25. 28”. 6 100 120 11. To improve repeatability of bends, various improvements have been made to help users achieve consistent bend angles. 00 1. PRICE SHEET. Schedule: SDR 35. An important safety precaution to use when working with PVC conduit is to Study with Quizlet and memorize flashcards containing terms like Minimal bending radius for 3 inch rigid conduit, Minimum bending radius for 1/2 inch rigid conduit, Maximum number of 90 degree bends allowed between pulls and more. Sizes from ¾ - 12" | DN20 - DN300. STEELS. This rigidity ensures the pipeline’s The best type of bending shoe for making concentric bends is the total number of degrees in the bend, and the developed length The maximum number of 90 Study with Quizlet and memorize flashcards containing terms like The minimal bending radius for 3in rigid conduit is, The minimum bending radius for 1/2in rigid conduit is, The maximum number of 90 degree bends allowed between pull points is and more. stub-up. The bends were dead on at 45 degrees, so it was Sep 7, 2011 · Consider 15 bends of 3 degrees each, spaced about three inches apart. Out of stock. May 3, 2024 · Slide the conduit forward until the next mark is on the arrow used to bend a 90° angle, and rotate the conduit 180° before bending the second bend to 11°, or a tiny bit over the 10° mark on the bender. A -degree bend in conduit represents a quarter of a circle. As expected, call out the 90-degree fitting since it is impossible to lay a typical 90 on a waste line horizontally. 19. OrdinarilyUnique1. Step 2. 3 70 0. 5" 38mm, 1. The circumference of a circle is times the value of pi (3. 5 2 ½ 2. xxx. 46 – R 2,315. The third type of bend is the offset bend. 5 metre and 1 metre - hardly ever the need to cut a length of flue, reducing installation time and wastage. METALS. Rechercher, consulter, imprimer, télécharger en un seul endroit. A mark is made on the raceway at the exact distance that is needed for the 90° bend. Double Swaged Hose Tail. Jan 2, 2020 · 4. When you buy 737 737 762 762 762 787 787 787 813 813 813 838 838 838. Note that each run has nine bends, each segment bent 10° ― only the spacing of the segments changes. O. This type of bend is commonly used when routing electrical conduits around corners or obstacles. Australian Made Mandrel Bent Alloy Bends Covering All Major Sizes Such As: 1. Study with Quizlet and memorize flashcards containing terms like Approximate ram travel, Back-to-back bend, Bending protractor and more. 75 1. Move the foot of the unaffected side forward 12-18 inches until you feel a stretch in the front of your involved hip. ASTM A234 WPB, A106B, A860 WPHY42, 52, 60, 65, 70, A420 WPL 3 / 6 / 9. plugs and air pressure. a bend in a piece of conduit that changes its direction by 90 degrees. Plazmaman 6000 Series Aluminium Elbows. Study with Quizlet and memorize flashcards Stock code: 6. 20 excl. Make use of the various tutorials and resources available online to enhance your AutoCAD skills. The venting can run either vertically or horizontally with a longer line A large bend formed by multiple short bends or shots. • An elbow provides a 90-degree change in direction. •. Running conduit is by far my favorite thing to do but always remember If you want to bend a piece of tubing to 90 degrees and you determined in your test bends that the material will spring back 7 degrees, you must bend the tubing 7 degrees past 90 (97 degrees) to achieve your desired 90-degree bend when you remove the tubing from the bender. You are making a concentric bend and the radius of the first pipe is 16′′ , the OD of the first pipe is 2′′ , and the spacing between pipes is 3′′. The minimum bending radius for 1/2 rigid conduit is_____. hk yt sa qo xu xo wd mi ob tq