One complete kit is intended to support three drafters, and there is normally a total of two kits carried in the battalion  allowance.  Full  100-percent  accountability  for the contents of each kit is essential. For this reason, each kit   must   be   inventoried   during   turnover   and   at twice-monthly intervals throughout the deployment. The contents of the kits must also be inspected to make sure they are in a state of good repair. Any missing items or  items  that  are  damaged  beyond  economical  and reasonable repair must be replaced. This is done using standard Navy supply procedures. Tool-kit inventory is a job that you should delegate to a responsible EA3; however, you should remember that, as the supervisor, you can still beheld accountable for the kits. You should remember,   too,   that   the   requirement   for   tool-kit inventory applies not only to Kit 11 but also to the surveying  and  soils  kits. Additional  supplies  and  equipment  are  also  stocked in the engineering office to supplement the kits. These supplies  and  equipment  also  should  be  inventoried periodically to maintain a reasonable supply level at all times. If possible, appoint one EA to serve in a collateral duty as your section supply petty officer. He will prepare requisitions  for  drafting  supplies  as  needed  and  keep you  informed  of  any  need  for  equipment  repair  or replacement. For  the  reproduction  machine  (usually  a  Blu-Ray whiteprinter), it is a good idea to have reserve spares for those parts that break down often. Most important of all, keep an ample supply of blueprint and sepia paper stored in a cool, dark space away from ammonia fumes or vapors. Drafting Room Layout Small crowded rooms hinder good work and make effective safety practices difficult. According to  Facility Planning Criteria for Navy and Marine Corps Shore Installations,  NAVFAC P-80, 90 square feet of floor space per person, exclusive of storage space, should be used  for  planning  purposes.  A  length-to-width  ratio  of about 2:1 is desirable for a drafting room, because this ratio allows for the proper arrangement of drafting tables and good lighting. An important factor to consider is the conservation of vision, since excessive light, as well as inadequate light,  induces  severe  eyestrain.  North-exposure windows are best for admitting daylight in the Northern Hemisphere. It is important that the lighting in the room be adequate in both quality and intensity; however, take care to avoid placing working areas in positions where they will be subjected to the glare of direct sunlight. Usually, excellent artificial lighting is achieved by the use of portable, adjustable lamps that can be clamped to the drawing table and moved so that the light falls in such a way as to minimize shadows and glare. When you arrange the drafting room, try to separate work  areas  and  storage  space.  Keep  materials  and instruments that are not in use in easily accessible cabinets and ensure that personnel do not have to walk around someone who is working to reach supplies. Keep prints  where  they  can  be  reached  quickly  by  any authorized  person.  If  possible,  have  drafting  equipment and  reproduction  equipment  located  in  separate  rooms. Personnel  Organization The  number  of  drafting  personnel  in  a  construction battalion  is  usually  small;  therefore,  an  elaborate organization  following  the  series  or  the  unit  assembly system  is  not  generally  feasible.  Instead,  the  parallel system is usually followed. In this system, each person is trained to do all the different job phases, and the same person carries a drawing through from start to finish. A senior  person,  however,  may  occasionally  be  assigned as  checker  and  editor,  and  routine  tasks,  such  as lettering, tracing, and insertion of corrections, may be assigned to junior personnel and strikers. However, to train  personnel  efficiently  and  to  sustain  interest  and morale,  you  should  maintain  enough  rotation  to  ensure that  each  person  gets  varied  experience. Filing System for Drawings The filing system used for drawings should be the one  you  find  to  be  most  satisfactory-meaning  that there  are  no  specific  rules  on  the  subject.  For  a discussion   of   recommending   filing   practices,   you should review chapter 16 of the EA3 TRAMAN. An individual should be assigned daily to the task of logging in, card indexing, and filing any drawings or prints received. Tracings should be filed separately, and there should be a standing rule that tracings must never be removed from the file except with your approval as the supervising EA. About the only time removal is necessary is for reproduction purposes. Any print issued to a constructor should be logged out by recording the date of issue and the name of the individual to whom it was issued. The purpose of this is to allow you to inform the constructors of any changes that must be made to prints used in the field. Reproduction  Room As you know well by now, ammonia vapors are highly   toxic;   therefore,   for   any   room   containing ammonia-vapor reproduction equipment, ventilation is of vital importance. Check with the battalion safety 14-4