A simple method is presented here to enable the constructor to evaluate the effects of formwork details on costs. The method is most easily used by setting up tables. For each system to be compared the important operations in construction formwork are itemized and the number of times each operation must be repeated is recorded. This number is estimated on the basis of field experience. The number of operations required for each part during erection and stripping is then multiplied by the number of parts to give the total number of operations for each part. To illustrate the method, cost analyses have been made of five vertical forming systems. To illustrate the information obtained, part of the comparison for three of the five systems are described here and the findings presented in table form. The systems were analyzed for application to construction of a 16 by 48 foot enclosed wall 12 inches thick by 8 feet high. The form face was to require 1,984 square feet of three-fourths of an inch plywood. System A: a wire tie using Number 9 wire with wooden spacers. System C: a single-wale system employing a design of 750 pounds per square foot with a safe snap tie working load of 3,000 pounds. System E: a one-half of an inch diameter continuous threaded coil rod system, employing a design load of about 1,000 pounds per square foot, with a tie working load of 6,000 pounds. Tables I through III found in the article show the number of operations analyses for the three systems. They include data on numbers of operations for plywood, lumber and hardware as well as the total number of operations. Table IV summarizes the numbers of operations for all three systems. It includes the number of operations for plywood, lumber and hardware, as well as totals, one and two man operations, weighted totals and normalized results. Table V provides a summary of costs for material for each of three systems. When three setups are estimated instead of one the relationship will change somewhat. As shown in Table IV the total number of operations varies widely among the three systems as do the weighted totals. Table V shows that the cost of the three systems for this particular wall also varies considerably, from $1,515 to $2,277. From such knowledge of how operations and cost totals may vary, as illustrated here, a formwork system can be selected with confidence.