MIL-HDBK-1025/10
with their feet placed so that they will be clear if the cover should be accidentally dropped. Figure
11 shows the methods and steps for removing a circular manhole cover.
WARNING
A manhole cover may weigh from 90 to 160 kilograms (200 to 350 pounds).
HOOKS UNDER RIM OF COVER
HOOKS ENGAGING
CIRCUMFERENTIAL
INSERT POINT 1.2 TO 1.5 METERS
(4 TO 5 FEET) INTO OPENING,
HOOK UNDER
THIS PULL SIMPLY UNSEATS COVER 1.2
THEN TWIST HOOK 90 AND PULL
CIRCUMFERENTIAL RIB
TO 1.5 METERS (4 TO 5 FEET)
UPWARD UNTIL RIB IS ENGAGED.
STEP 3
STEP 2
STEP 1
THIS HOOK PULLS COVER
STRAIGHT OFF FRAME
NOTE
1.
FEET ALWAYS IN
THE CLEAR
2.
BOTH HANDS
USED
THIS HOOK LIFTS COVER
3.
WEIGHT
LEVEL WITH FRAME
SHARED BY BOTH PERSONS
KEEP FEET CLEAR
THIS PULL SIMPLY UNSEATS
THIS PULL CARRIES COVER SLIGHTLY
COVER OFF FRAME
MORE THAN HALFWAY OFF FRAME
STEP 4
STEP 5
Figure 11
Steps in Removing a Manhole Cover
a. If the manhole cover does not lift readily, first check to be sure the cover is not secured
by a locking device. If a locking device is not holding the manhole cover, loosen the cover by
placing a block of wood on the cover near the rim and striking the wood with a heavy hammer.
Insert a manhole hook into one of the manhole cover holes. Pry the cover while the block of
wood is being struck at several different points around the circumference of the cover.
b. If snow, ice, or other surface conditions cause insecure footing around the manhole
cover, either clear the working area with a shovel or broom, or spread sand or other suitable
material around the cover to ensure firm footing. Do not strike the manhole cover with a steel or
iron tool. Use a hardened bronze cold chisel to remove ice from a cover. A bronze cold chisel
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