SEABEE COMBAT
WARFARE
NMCB SPECIFIC
106A
MAN-DAY CAPABILITY
Contingency Operations
• References:
• NAVFAC P-437, Planning Guide for Navy
Facilities, Vol. 1
• NAVFAC P-437, Planning Guide for Navy
Facilities, Vol. 2
Contingency Operations
• NAVEDTRA 12543, Naval Construction
Force/Seabee 1 &C
• Seabee Crew Leader Handbook
• Seabee Construction Management I & II
Abbreviations
• MC =
Total Manday Capability of Direct Labor Personnel (projects + training)
• DL =
Number of Direct Labor Personnel Assigned
• WD =
Number of Available Workdays in the Deployment
• ME =
Manday Equivalent (converts typical workdays to 8 hour mandays)
• AF =
Availability Factor
Manday Capability
• In order to calculate the construction
activity duration's, you must first
understand the Manday Capability
Equation.
• The equation used to determine the direct
labor manday capability at the mainbody
site and each detail site is as follows.
Manday Capability
Manday Capability (MC)- the total number of
mandays that a NMCB, DET, DFT, etc. is able to
produce within a specified period of time.
Direct/Indirect/Overhead Labor
• Direct Labor personnel are those whose efforts
contribute to project work-in-place (WIP).
• Indirect labor personnel provide project support
and include mechanics, expeditors, EA’s (except
when surveying), MLO / CTR, Staffs and the Ops
/ QC staff.
• Overhead labor personnel provide battalion
support such as disbursing, galley ops, personnel,
admin and supply.
Workdays
• Workdays (WD) - The number of available
workdays is the total number of calendar
days minus all off days.
• Off days may include: Sundays; half of the
Saturdays; all holidays; battalion turnover
(up to 10 days for mainbody); one day for
mid-deployment party; and one day for the
change of command.
Manday Equivalent
• Manday Equivalent (ME) - is the actual
manhours worked “swinging hammers” on
the job site during a workday. It is the
length of the workday, minus lunch, minus
breaks minus travel time to and from the job
site (including lunch), divided by 8 (the
number of hours in a manday).
Availability Factor
• Availability Factor (AF)- Takes into account that
Seabees assigned as direct labor are not available
100% of the time.
• About 20% of the direct labor personnel’s time is
lost to : leave, liberty, inspections, quarters, medical,
dental, haircuts, military drills, battalion indoc,
watches, collateral duties, etc.
Availability Factor
• Availability Factors for planning purposes
are provided by higher headquarters.
• They vary between .60 and .90 depending
on the deployment site.
• The typical percentages are .75 for
mainbody sites and .85 for detail sites.
• The typical percentage for contingency
construction is .90.
Example #1
• How many Mandays of construction can a
det with 60 direct labor personnel do in a
deployment with 150 workdays, an
availability factor of .80 and a manday
equivalent of 1.125?
•Answer #1
• MC = DL x WD x ME x AF
• MC = 60 x 150 x 1.125 x .80
• MC = 8,100
Example #2
• How many Direct Labor personnel would
be required for a detail tasked to do 4,000
mandays in a deployment with 150
workdays?
• Use 1.125 as the manday equivalent and .90
for the availability factor.
Answer #2
• DL = MC / (WD x ME x AF)
• DL = 4,000 / (150 x 1.125 x .90)
• DL = 4,000 / 151.875
• DL = 4,000 / 151.875 = 26.337 or 27
Example #3
• How many Workdays would it take for 70
direct labor personnel to do 3,150 mandays
of construction with an availability factor of
.75 and a manday equivalent of 1.125?
Answer #3
• WD = MD / (DL x ME x AF)
• WD = 3,150 / (70 x 1.125 x .75)
• WD = 3,150 / 59.0625
• WD = 53.33 or 54
Example #4
What would our Manday Equivalent be if we had
a crew of 12 working from 0630 to 1700, traveled
5 minutes to and from work, 1 hour for lunch
(including travel time) and two 10 minute breaks?
Answer #4
• ME = WD - Travel time - break time -lunch / 8
• ME = 10.5 - .167 - .33 - 1 / 8
• ME = 1.125
Example #5
• If a crew of 8 reported 125 mandays direct
labor in a month with 21 workdays and a
manday equivalent of 1.125, what was the
actual Availability Factor?
Answer #5
• AF = MD / (DL x WD x ME)
– AF 1.125 IS FOR MAIN BODY ONLY
• AF = 125 / (8 x 21 x 1.125)
• AF = 125 / 189
• AF = .6613756 or 66%
NAVFAC P-437 VOL 2
INDEX OF COMPONETS
NAVFAC P-437 VOL 2
COMPONETS
NAVFAC P-437 VOL 2
FACILITIES
NAVFAC P-437 VOL 2
ASSEMBLIES
SMEAC
•
•
•
•
•
Situation
Mission
Execution
Administration
Command and control
SMEAC #1
• Situation: Dayton peach accord requires deployment to NATO
forces to Bosnia to which the United States has committed 5,000.
Permanent and temporary campsites are required to house U.S. Forces.
• Mission: Construct campsite to house JTF forces.
Construct one
(1) 750 man tent camp. Provide for repair of runway for C-130
aircraft. Convoy security will be provided by JTF as requested.
SMEAC #1 cont.
• Execution:
Be prepared to deploy with in 5 days, advise ALCON
when available for airlift. Provide specific airlift/sealift requirements
to 2NCB within 48 hours. Identify Class IV materials required for
camp construction within 72 hours. Upon completion of tasking,
redeploy to originating site (approx. 60 days).
• Administration:
Operate own self-sufficient camp. Resupply
requests through JTF. CESE support through own command, require
anticipated schedule for airlift within fire days of arrival.
SMEAC #1 cont.
• Command and control:
–
–
–
–
OPCON - JTF
ADCON - NMCB 74
Advise ADCON on arrival
Revise schedule for construction and submit weekly
sitrep.
NAVFAC P-437 VOL 2
INDEX OF COMPONETS
NAVFAC P-437 VOL 2
COMPONETS
CONVERT MANHOURS
TO MANDAYS
• MD = MH / 8 hour in a workday
• MD = 7,501 / 8
• MD = 937.625 or 938
FORMULA FOR MANDAY
CAPABILITY
• DL = MD / WD / ME / AF
• DL = 938 / 56
(60 - 4 days for mount out)
/ 1.25 / .90
– ME 1.25 is for contingency ops only
• DL = 14.88 or 15
RATIO
• CM
6 TO 1
– WILL BE CHANGING TO 8 TO 1 BUT IT HAS NOT
GONE INTO EFFECT YET
•
•
•
•
HM
IDC
YN/PN
MS
100 TO 1
150 TO 1
50 TO 1
50 TO 1 LESS THEN 50 PEOPLE
THERE WILL BE NO FSA’S
RATIO cont.
• SK
• ET
• GM
UNDER 100 THERE WILL BE
ONLY 1
DEPENDS ON SMEAC
DEPENDS ON SMEAC
RATIO cont.
• FSA
– FOR EVERY ONE MS THERE WILL BE
ONLY ONE FSA’S
– 1 TO 1
RRR
•
•
•
•
46 LEVEL I
20 LEVEL II
6 CRETE MOB.
TOTAL
– 72 PEOPLE
MAIN SUPPLY ROUTE
• MSR
• 6 EO’s
– FOR EVERY 10 MILES OF ROADS
SECURITY
• SECURITY PLT HAS 45 PEOPLE
–
–
–
–
PLT COMMANDER
ASST. PLT COMMANDER
RIGHT GUIDE
14 IN SQ
WATER WELL
• TOTAL OF 21 PEOPLE
–
–
–
–
OIC
MS
IDC
18 DL
THE END
• ANY QUESTIONS