MOS 51B Carpentry and Masonry Specialist
The carpentry and masonry specialist performs general heavy carpentry, structural steel, and masonry duties, to include fabrication, erection, maintenance, and repair of rigging devices, trusses, and other structural assemblies. Duties for MOS 51B at each level of skill are:
a. Major duties.
(1) MOSC 51B1O. Employs basic carpentry and masonry skills. Assists in building layout, framing, sheathing, fabrication and roofing structures. Assists in erection of rough timber structures. Reads and interprets drawings, plans and specifications. Repairs and renovates all types of structures and erects prefabricated buildings. Constructs concrete form work for slabs, walls, and columns. Assists in performance of combat engineer missions, Reserve Components (RC) assists in sawmill set up and operation.
(2) MOSC 51B2O. Interprets construction drawings and blueprints. Prepares building layout. Constructs wooden or concrete foundation and erects building framework. Installs flooring, walls, partitions, siding, roofing, doors, windows, stairs, and interior finishing. Erects prefabricated and pre-engineered metal structures. Applies proper concrete curing methods. Directs operational maintenance on assigned equipment. Reserve Components perform millw right, head saw operator, and edger functions during sawmill operations.
b. Physical demands rating and qualifications for initial award of MOS.
Carpentry and masonry specialist must possess the following qualifications:
(1) A physical demands rating of very heavy.
(2) A physical profile of 111221.
(3) Normal color vision.
(4) A minimum score of 90 in aptitude area GM.
(5) Freedom from vertigo to permit climbing, balancing, and working in high places.
(6) Formal training (completion of MOS 51B course conducted under the auspices of USA Engineer Center & School) mandatory or meet civilian acquired skills criteria outlined in AR 601-210.
c. Additional skill identifiers.
(1) P5-Master Fitness Trainer.
(2) 4A-Reclassification Training.
d. Physical requirements and standards of grade.
Physical requirements and SG relating to each skill level are listed in the following tables:
(1) Table 10-51B-1. Physical requirements.
(2) Table 10-51B-2. Standards of grade TOE/MTOE.
(3) Table 10-51B-3. Standards of grade TDA.






