WORK MEASUREMENT

WORK MEASUREMENT
Formulas are developed for esch variation of work a craftmant encounters. For example, in the the painting walls, preparing and brush painting ceiling, cleaning and brush painting pipe, cleaning and brush painting machine equipment. Figure 3-27 is “cleaning and brush painting machine equipment,” which is a common machine-maintenance job occurring in production and maintenace areas.
The first step in the development of standards, using MTM,is the collection of complete information as the work, methods, equipment, and materials used.
Every motion required to complete the work must be analyzed, classified, and recorded. The observer must watch the accepted methods and order to determine the sequence in which these motions occur as well as to obtain a correct mental picture of the motions required to do the entire operation.
These motions are then broken down into MTM elements and entered on a “meth-ods-analysis chart,” together with the MTU required to complete the motion. In Fig. 3-24, note element A,”Pick up 1-in., round, all-purepose brush remove excess solvent.” The painter reaches for the brush in a can of solvent (R14B or reach,14 in., case B ),and takes hold of the brush (G1A or grasp, case 1 A). he moves the maintenance—plant-wide.
ANALYSIS
The tools required for this job are 1- and 2-in. scrapers, a wire brush, round all-purepose paint brushes from ½ to 2 in. in diameter, and an air hose.
The materials used are a carbon tetrachloride solvent, gray paint (Roxalin 13-494), rags, and emty gallon cans for holding the solvent.
The areas cleaned and painted are measured and figured, then classified, and then calculated for their leveled times. See sheet 8 for a sample calculation.
PROCEDURE
The operator dips a 1-in. brush into a can of solvent, and brushes the solvent onto the machine with a rubbing back and forth motion. When necessary, the operator will also use a scraper or wire brush to remove the grime not removed by the brush and solvent. After the entire area has been cleaned area.
The oprator dips his paint brush into an open can of paint, brushes off the axcess paint on the lip of the can, and paint the machine. He will use several sizes of brushes ranging from a ½-in. round to a 2-in. round brush. Where trimming is involved, it may be necessary for the operator to wipe the overlap.

Maintenance- plant- wide
Title: cleaning and painting
SYNTHESIS
The are studied were classified into three distinct groups of work.
Class I. work is for smooth surfaces that are relatively easy to clean and paint. The surfaces are smooth and flat such as base tyas and splash guards.
Class II. Work is for irreguler surfaces that are not smooth and flat such as curved chip guards and curved belt guards.
Class III. Work is for very irreguler surfaces that have projections, piping, levers, and handwhells.
Class III is very difficult cleaning and painting. Examples of class III are the complete turret assembly, the saddle and cross slide assembly, the lathe head, and the motor.
Class I is relatively easy work, whereas class III is very difficult with many more highly controlled motion.
Class II primarily fits the work in between the two extremes. Cleaning was analyzed as follows:
Leveled minutes per square foot of class I work equals EL A + C + D + E + F + G + H
= 0.053 + 0.199 + 0.028 + 0.059 + 0.199 + 0.093 + 0.193
= .82 min per square ft.
Leveled minutes per square foot o class II work equals
EL A + C + D + E + F + G +1 ½H
= 0.053 + 0.199 + 0.028 + 0.059 + 0.199 + 0.093 + 1½(0.193)
= 1.11 min per sq ft.