Document 3QoXLjGybzQZ6KkMwDgqG7o10

Factors Affecting Paint Costs THE major item in the cost of a painting job is, It will be seen that the covering rate actually almost without exception, the labor cost of obtained was but 57% of the rate expected; that the applying the paint. On some types of work wherespreading rate obtained was but 56% of the rate there is considerable moving of staging involved, or expected; that, as a result of these two contributing where there is much careful cutting in to do, the factors, 66%% more material was needed for the labor cost may amount to 90% of the total cost. job than was anticipated. On plain, flat, easily-reached surfaces the labor If white-lead paint had been used, the contractor percentage may be around 60%. figured his cost for paint would have been about Converting percentages to dollars, a typical $6000. The "ordinary flat wall paint" actually used $1000 job might represent $750 worth of labor and cost about $6500. The $500 extra cost of material is $250 worth of materials. a sizable figure but it is practically small change On the face of it, this simple division of costs-- alongside the increased labor cost on this job. The 75% labor, 25% materials--might appear to indi estimated output per man was 1600 square feet per cate that, if a saving of 40% could be made in day. Actual production was 900 square feet per material costs, the saving on the job as a whele day. The estimate figured on 1300 days labor at would be 10%. This assumption would be true if the former rate but the job, as carried out, required there were no complicating factors. However, such things as hiding power, covering capacity and spreading ability must be considered. .An excellent example of how these "complicating 2300 days labor. This means that 1000 additional days were needed to complete the job. At current wage rates it is easy ro see how a low cost-per-gallon paint can cost considerably more, on the job, than factors" affect an anticipated saving in material a paint with a high spreading rate and good covering costs was recently afforded by a good-sized job in an eastern city. The local school board asked for bids on painting the interior of a large school building. The specifi cations called for white-lead paint and an alternate capacity that may cost more in the pot. bid based on an ordinary flat wall paint. The painter who was awarded the job submitted two figures, as directed. One was based on whitelead paint. The other, and lower, bid was based on "ordinary flat wall paint." This latter figure won the award. In arriving at the price, the painter had figured he would get from the "ordinary paint" the same coverage and spreading capacity as he would with white-lead. Expressed in figures, he estimated he would get a coverage of 700 square feet per gallon and a spreading rate per man per day of 1600 square feet. On this basis he figured his total paint require ments at 3000 gallons. It is generally agreed that the above figures are normal for flat paint made of white-lead and Lead Mixing Oil and used on smooth plaster. The job was done, as previously stated, with the "ordinary flat wall paint." Here is actually what happened: .Anticipated (white-lead) covering rate................. 700 sq. ft. per gal. Actual covering rate ("ordinary paint")........ 400 sq. ft. per gal. Anticipated (white-lead) spreading rate............... 1600 sq. ft. per day Actual spreading rate ("ordinary paint")....... 90Q sq. ft. pier day Anticipated quantity of paint needed (white-lead).................................... 3000 gals. Actual quantity of paint used TELLURIUM LEAD IN THE LABORATORY The mechanical strength and superior resistance of Tellurium Lead to corrosion by acid is increasing its use. not only in the operating equipment of industrial and chemical companies throughout the country, but in their laboratory equipment as well The accompanying photograph shows two views of a multiple digestion apparatus manufactured by the Precision Scientific Co. Chicago, Illinois. The horizontal fume pipe with the individual hoods for each digestionflask as well as the vertical stack connected with the motor blower below are made of Tellurium Lead. Both