establishing  the  UCD.  UCDs,  except  for  specific projects with critical completion dates, are established by  the  battalion.  When  delay  of  a  UCD  becomes necessary,   the   battalion   must   advise   2ndNCB/ 3rdNCB  in  writing  of  the  cause  and  estimated  duration of  the  delay.  The  UCD  reflected  in  the  SITREP, however,  shall  not  be  adjusted  until  approved  by 2ndNCB/3rdNCB.   When   adjusting   UCDs,   the battalion  takes  appropriate  action  to  ensure  that  only the  minimum  number  of  UCDs  are  affected  by  the delay. BARCHARTS Barcharts are used to plot and track your progress as you work your project. They graphically show you if you are ahead, behind, or on schedule. Barcharts help you track how well you are doing against what you had planned. At the end of each month you need to  update  your  level  II  barchart  with  the  actual man-days expended and percent completed. To plot these figures, you need to total the man-days expended for  direct  labor  (from  your  time  cards)  and  obtain  the percent   complete   from   the   SITREP.   To   make   a progress  curve  you  just  connect  the  dots.  If  the progress curve is above the planned progress curve, your project is ahead of schedule; if below, you are behind.  As  previously  stated,  man-days  expended have nothing to do with percent complete. However, a  rough  comparison  can  be  made  between  the man-days expended as a percent of the total man-day estimate  versus  the  scheduled  percent  complete.  A large  variation  in  these  numbers  indicates  a  problem. Figure 2-26 is a level II with an actual progress curve and  cumulative  man-days  figures.  This  illustration shows all the information plotted through the end of the  project. PHOTOGRAPHIC  COVERAGE The battalion shall provide to 2ndNCB/3rdNCB on a monthly basis at least two color slides of each active  project.  These  slides  must  arrive  not  later  than the fifth of each month. Vantage points are chosen based on the broadest coverage. The same view should be  used  for  slides  taken  during  the  following  months. Consistency  in  vantage  points  and  view  help  show sequence  of  construction.  Include  slides/prints  of working  crew  members  and  major  construction evolutions that depict Seabees in action. It is the  crew leader’s responsibility to produce photographic proof of  the  project’s  progress.  Be  sure  the  slides/prints show a commitment to a quality product, teamwork, and  zero  safety  violations. SAFETY The battalion safety office is not responsible for safety on your jobsite. YOU ARE!!! According to the NCF Safety Manual, COM2NDNCB/COM3RDNCB- INST  5100.1  series,  the  battalion  safety  office administers the battalion safety program and provides technical guidance. It is the crew member, the crew leader,  the  project  supervisor,  the  company  chief,  the company  commander,  the  Ops  officer,  and  the commanding officer who are 100 percent responsible for safety on the jobsite. If you have any questions concerning safety on the project, the battalion safety office is a good place to get your questions answered. It  is  not  the  responsibility  of  the  safety  office  to prevent  you  from  doing  something  you  know  or suspect is unsafe. They do not have the staff to be present on the jobsite at all times. Safe construction is your responsibility, and ignorance is no excuse. It is your  responsibility  to  find  out  how  to  do  construction in a safe manner. MISHAP  PREVENTION The  goal  of  our  safety  program  is  to  prevent mishaps.  Seabees  do  not  use  the  word   accident because  it  implies  the  absence  of  fault  (accidents happen).  Mishaps  most  commonly  result  from  failure to  follow  safe  construction  practices.  Consider  an activity to replace the deck on a marina pier. Follow the seven-step process in figure 2-27 to see how you can best avoid a mishap. Figure 2-27.-Seven steps to avoid a mishap. 2-37