KC Bit & Supply, Rock Bits for the Rotary Drilling Industry

Workover Mills designed to drill metal and cement for well completion. The advantages of using a Work Over Mill are: No moving parts and no lost cones. The Bear Claw, Hurricane, and Aardvark Mills are designed for specific drilling applications. KC Bit & Supply has the LOWEST prices available on these mill …

How Can I Eliminate Surface Voids in Concrete?

While many variables must be considered in the elimination of surface voids or bug holes in concrete castings, there are a number of precautions that can remedy this unsightly problem. Careful preparation and methodical practices can eliminate even the worst of …

Lessons Learned From Combined Whipstock Operation: …

After waiting on cement to set, the cement was drilled out and a successful formation test achieved. An additional 130 ft of rathole was then drilled with the mills to place the stabilizers on the ...

Anchor Bolt Tolerances

2016-8-2 · in. bolt—2-3/4 in. hole; 2 in. bolt—3-1/4 in. hole; and 2-1/2 in. bolt—3-3/4 in. hole. AISC, Steel Design Guide Series 1, Column Base Plates, suggests that using oversize holes meeting these criteria may still not accommodate field varia-tions in anchor bolt placement and suggests adding 1/4 in. to the hole diameter listed. The guide recom-

Concrete Calculator | Volume Calculator | Concrete2you

Our concrete calculator allows you to accurately work out the amount of concrete you''ll need for your project. Simply add the measurements for your concrete order to the relevant shapes above (you only have to fill in the shape/s you want to use) You can build up a concrete calculation for complicated areas by adding additional shapes of each type.

Anchoring Instructions

2021-8-4 · On a 12" (300 mm) concrete slab, drilled holes must be 1.5" (38 mm) diameter and a depth of 8.5" (215 mm), (EC-1600 machine foundation requirement). Caution: Completely clean and dry the drilled holes. Make sure no oil or water is in the drilled holes. If you clean and dry the drilled holes …

Simple Ways to Fill Concrete Holes (with Pictures)

2021-5-19 · Before attempting to fill a hole, clear out loose concrete and other debris. Then, mix the mortar, fill in the hole, and level it to blend it in with the surrounding structure. Concrete takes time to cure, so keep the patch moist for several days for a stronger fix. Patching concrete holes is a simple weekend project and it can help protect ...

Hole Saw Drill Bits

These hole saw drill bits are tipped with diamond grit and are capable of drilling holes through ceramic tiles, hard plastics, fibro cement, and fibreglass. Very similar to diamond drill bits, they are designed to be dipped in water after every 20 seconds of use.

Reinforced Concrete Design

2014-6-30 · = concrete compressive design strength at 28 days (units of psi when used in equations) Deformed reinforcing bars come in grades 40, 60 & 75 (for 40 ksi, 60 ksi and 75 ksi yield strengths). Sizes are given as # of 1/8" up to #8 bars. For #9 and larger, the number is a nominal size (while

PRECAST CONCRETE MANHOLES

2019-3-20 · Using an allowable concrete stress of 45% of the minimum specified compressive strength of 4,000 psi, the allowable compressive stress would be 1,800 psi. Substituting this value for s yields the following: = 3.4 s H 1,800 = 3.4H then H = 530 feet The above example illustrates that precast concrete …

Chapter 6 DRILLING AND WELL CONSTRUCTION

and tools, deep holes can be drilled. The depth record is 11,145 ft, completed in New York in 1953 (Campbell, 1973). Large rigs can drill 18 to 24 in. holes to several hundred feet. Cable tool rigs have several advantages over certain rotary methods: 1. There is no potential for plugging producing formations with drilling muds. 2.

How to Drill Holes | PlanItDIY

We''ll look at how to make a basic small pilot hole in a piece of wood, as well as larger holes for different applications. Then we''ll drill holes in different substances such as metal, brick and tile. So let''s get started. Standard drill bits come is a variety of sizes …

How Can I Eliminate Surface Voids in Concrete?

While many variables must be considered in the elimination of surface voids or bug holes in concrete castings, there are a number of precautions that can remedy this unsightly problem. Careful preparation and methodical practices can eliminate even the worst of surface voids…

How to Drill Concrete with a Regular Drill | Hunker

Step 3. If you hit a spot in the concrete where you can not get the drill bit to go any further stop and back out and increase the diameter of your drill bit as in step two. Once the hole is slightly larger take a hardened nail, place it in the hole and give a few whacks with a …

Coiled Tubing Solutions

2016-3-18 · used in combination with a 3.35 in. turbo mill. This system was chosen because of the plug form of the cement. Result: The underreamer used in combination with the turbo mill successfully milled 1,118 ft of cement in a single run. Using water and high viscous pills, an average rate of penetration (ROP) of 74.50 ft/hr was achieved. Well Cleaning 5

Reinforced Concrete: Drilling and Troubleshooting

Drilling into Reinforced Concrete. First, determine the wall thickness by drilling a test hole and ensure that it is not a '' thin concrete wall (< 8cm thick).''. It is best to keep the drilling depth 1-2 cm shallower than the wall''s thickness to prevent spalling (splintering or chipping) on the inner wall. Due to the density of ferro-concrete…

CONSTRUCTION CROSS-SECTION DRAWINGS AND …

2021-5-24 · 4" (100 mm) min. thickness for concrete min 6" wide x 12" deep (150 mm x 300 mm) concrete curb set 1/4" (7 mm) below top of pavers and control joints @ 15'' (5 m) oc concrete / asphalt base patio / sidewalk / plaza drawing no. 3" (75 mm) min. thickness for asphalt 2" (50 mm) dia. drain hole filled with pea gravel locate at lowest elevations 1.

Some Rust on Rebar Is Acceptable| Concrete Construction ...

1994-3-1 · Some Rust on Rebar Is Acceptable. By Concrete Construction Staff. Question: The project inspector is requiring us to wire-brush mill scale and rust off all our rebar. Although the rebar has been at the site for a couple of weeks, we don''t think the rust is that heavy or will interfere with the bond between the concrete and steel.

Minor Cracks and Fractures

2014-4-15 · QUIKRETE® Latex Cement is a two-part repair product consisting of a special latex powder and liquid latex bonding agent. This material is made for patching and smoothing concrete and masonry surfaces over larger areas. It can be applied from a thickness of 1/16" TO A FULL ¼". QUIKRETE® Latex Cement can be used indoors and out,

Downhole Milling Tools

2019-7-29 · the mill. Flat-bottom mills are available for casing and tubing of all weights and sizes. Gauge Mills Gauge mills are designed for running downhole before a whipstock or casing patch is set. These slightly overdrift mills clean up unsuspected restric-tions, ensuring proper hole size. Gauge mills are precision ground to casing weights.

Guidelines for Dowel Alignment in Concrete Pavements

movement due to thermal contraction and expansion of the concrete. One such study was conducted by Segner and Cobb at the University of Alabama (1967). This study used dowel pull-out test results to show that vertical tilt was more critical to pavement performance than horizontal skew. The study showed that a horizontal skew of 19.1 mm

Used Cement Silo for sale. Cemen Tech equipment & more ...

Cement Silo 11′ diameter (1) – one – Cement Silo 11′ diameter x 33′ tall silo, approximate 3,200 cf capacity, two pneumatic fill pipes, 12″ diameter round discharge at coned bottom, 34″ x 34″ flanged square opening on top for baghouse, (...

Guide to laying bricks

4. Laying Bricks. Remove the dry blocks from the footing and spread a layer of mortar about 10mm thick along the footing to the length of about 5 bricks. Place the corner/end brick in place squarely up against the string line. Tap this brick down with the trowel …

Historically, drillers have relied on openhole cement ...

2021-7-26 · Historically, drillers have relied on openhole cement plugs or cased hole whipstocks for sidetracking wells. By incorporating an innovative downhole anchor with a whipstock assembly, drillers can set whipstocks in open holes without concern for cement plug integrity. Advances in whipstock and mill design are also significantly

The Ins and Outs of Cement Board Repair

Reinforced Concrete: Drilling and Troubleshooting

Concrete Calculator – CCS Group

Use our concrete calculator to determine the amount of concrete needed to pour your concrete slab. Enter the width and length of your slab in metres. Then enter the thickness of your slab in millimetres. The amount of concrete you require will display in cubic metres in the blue box.