- 16 -
Form: MM-A4/A5SC Revised 07/13/16
Usage Calculation
The calculations below are nominal and could vary depending on the hardness of the
concrete, aggregates used and the possibility of bits hitting steel reinforcement.
Whirly Bit, Taper Bit and “H” Thread Bit
(B)Bit=180 holes x 9” (22.86cm)
B=1620” (4114.8cm)
Number of bits needed = (number of holes x hole depth)/1620”
Taper Steel and “H” Thread Steel
(S)Steel=600 holes x 9” (22.86cm)
S=5400” (13716cm)
Number of steels needed = (number of holes x hole depth)/5400”
Example:
Need 50,000 Holes 12” (30.48cm) Deep for the job.
(50,000 x 12)/1620 = 371 Bits
(50,000 x 12)/5400 = 112 Steels
Drill Bit Installation
1. Check to see that the hole through the center of the drill steel is not blocked, if so
remove the object.
2. Clean the tapered end of the drill steel and the inside of the drill bit with a non-
oily cleaner, making sure not to leave any oily residue.
3. Make sure a brass shim is in the drill bit. If not, carefully roll a new one and slide
it into the bit making sure that the ends do not overlap.
4. Put the drill bit on the tapered end of the drill steel and tap it on a firm surface to
seat the bit.
Drill Bit Removal
1. Swing latch so that drill steel can be removed from drill.
2. Pull drill steel out of drill.
3. Using two hammers, place one hammer on bottom side of bit. Using other
hammer, strike the bit on the topside. Rotate drill steel 1/4 turn and strike top of
bit again. Repeat procedure until bit comes off.
CAUTION: Bit may pop off of drill steel with some force.
Содержание A-4SC
Страница 11: ... 11 Form MM A4 A5SC Revised 07 13 16 A 4SC A 5SC Safety Decal Kit Placement Cont 012287 00006 012287 00062 ...
Страница 22: ... 22 Form MM A4 A5SC Revised 07 13 16 Plumbing Diagram Part 1 ...
Страница 24: ... 24 Form MM A4 A5SC Revised 07 13 16 Plumbing Diagram Part 2 ...
Страница 26: ... 26 Form MM A4 A5SC Revised 07 13 16 Plumbing Diagram Part 3 ...
Страница 28: ... 28 Form MM A4 A5SC Revised 07 13 16 ...
Страница 29: ... 29 Form MM A4 A5SC Revised 07 13 16 ...
Страница 30: ... 30 Form MM A4 A5SC Revised 07 13 16 ...
Страница 31: ... 31 Form MM A4 A5SC Revised 07 13 16 ...
Страница 32: ... 32 Form MM A4 A5SC Revised 07 13 16 ...
Страница 33: ... 33 Form MM A4 A5SC Revised 07 13 16 ...
Страница 34: ... 34 Form MM A4 A5SC Revised 07 13 16 ...
Страница 35: ... 35 Form MM A4 A5SC Revised 07 13 16 ...
Страница 36: ... 36 Form MM A4 A5SC Revised 07 13 16 ...
Страница 37: ... 37 Form MM A4 A5SC Revised 07 13 16 ...
Страница 38: ... 38 Form MM A4 A5SC Revised 07 13 16 ...
Страница 44: ... 44 Form MM A4 A5SC Revised 07 13 16 ...
Страница 46: ... 46 Form MM A4 A5SC Revised 07 13 16 ...
Страница 47: ... 47 Form MM A4 A5SC Revised 07 13 16 ...
Страница 48: ... 48 Form MM A4 A5SC Revised 07 13 16 ...
Страница 49: ... 49 Form MM A4 A5SC Revised 07 13 16 ...
Страница 50: ... 50 Form MM A4 A5SC Revised 07 13 16 ...
Страница 51: ... 51 Form MM A4 A5SC Revised 07 13 16 ...
Страница 52: ... 52 Form MM A4 A5SC Revised 07 13 16 ...
