1. SEABEE COMBAT
WARFARE
NMCB SPECIFIC
106A
MAN-DAY CAPABILITY

2. Contingency Operations
References:
NAVFAC P-437, Planning Guide for Navy Facilities, Vol. 1
NAVFAC P-437, Planning Guide for Navy Facilities, Vol. 2

3. Contingency Operations
NAVEDTRA 12543, Naval Construction Force/Seabee 1 &C
Seabee Crew Leader Handbook
Seabee Construction Management I & II

4. 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

5. 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.

6. 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.

7. 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.

8. 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.

9. 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).

10. 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.

11. 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.

12. 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?

13. Answer #1 MC = DL x WD x ME x AF MC = 60 x 150 x 1.125 x .80

14. 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 as the manday equivalent and .90 for the availability factor.

15. Answer #2 DL = MC / (WD x ME x AF) DL = 4,000 / (150 x 1.125 x .90)
DL = 4,000 / = or 27

16. 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?

17. Answer #3 WD = MD / (DL x ME x AF) WD = 3,150 / (70 x 1.125 x .75)
WD = or 54

18. 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?

19. Answer #4 ME = WD - Travel time - break time -lunch / 8

20. 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?

21. Answer #5 AF = MD / (DL x WD x ME) AF = 125 / (8 x 21 x 1.125)
AF IS FOR MAIN BODY ONLY
AF = 125 / (8 x 21 x 1.125)
AF = 125 / 189
AF = or 66%

22. NAVFAC P-437 VOL 2 INDEX OF COMPONETS

23. NAVFAC P-437 VOL 2 COMPONETS

24. NAVFAC P-437 VOL 2 FACILITIES

25. NAVFAC P-437 VOL 2 ASSEMBLIES

26. SMEAC
Situation
Mission
Execution
Administration
Command and control

27. SMEAC #1
Situation: Dayton peach accord requires deployment to NATO forces to Bosnia to which the United States has committed 5, 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.

28. 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.

29. SMEAC #1 cont. Command and control: OPCON - JTF ADCON - NMCB 74
Advise ADCON on arrival
Revise schedule for construction and submit weekly sitrep.

30. NAVFAC P-437 VOL 2 INDEX OF COMPONETS

31. NAVFAC P-437 VOL 2 COMPONETS

32. CONVERT MANHOURS TO MANDAYS
MD = MH / 8 hour in a workday
MD = 7,501 / 8
MD = or 938

33. FORMULA FOR MANDAY CAPABILITY
DL = MD / WD / ME / AF
DL = 938 / 56 ( days for mount out) / 1.25 / .90
ME is for contingency ops only
DL = or 15

34. RATIO CM 6 TO 1 HM 100 TO 1 IDC 150 TO 1 YN/PN 50 TO 1
WILL BE CHANGING TO 8 TO 1 BUT IT HAS NOT GONE INTO EFFECT YET
HM 100 TO 1
IDC 150 TO 1
YN/PN 50 TO 1
MS 50 TO 1 LESS THEN 50 PEOPLE THERE WILL BE NO FSA’S

35. RATIO cont. SK UNDER 100 THERE WILL BE ONLY 1 ET DEPENDS ON SMEAC
GM DEPENDS ON SMEAC

36. RATIO cont.
FSA
FOR EVERY ONE MS THERE WILL BE ONLY ONE FSA’S
1 TO 1

37. RRR
46 LEVEL I
20 LEVEL II
6 CRETE MOB.
TOTAL
72 PEOPLE

38. MAIN SUPPLY ROUTE
MSR
6 EO’s
FOR EVERY 10 MILES OF ROADS

39. SECURITY SECURITY PLT HAS 45 PEOPLE PLT COMMANDER ASST. PLT COMMANDER
RIGHT GUIDE
14 IN SQ

40. WATER WELL
TOTAL OF 21 PEOPLE
OIC MS
IDC
18 DL

41. THE END
ANY QUESTIONS