Chapter Vii. Estimating 142

74. Methods of estimating; 75. Table for estimating by cubic-foot unit; 76. Grading rules; 77. Estimating lumber quantities; 78. Estimating millwork quantities; 79. Example of form for bill of materials; 80. Estimating labor costs; 81. Estimating quantities of nails; 82. Example of form for carpentry costs; 83. Total building costs by percentages.

Appendix 158

I. Natural trigonometric functions; formulæ deduced. Solution of right triangles, (brief)

II. Table of natural functions (for degrees only). Interpolation.

III. Useful tables. Fractional equivalents for decimal values. Wood and machine screw sizes. Length and number of nails. Wire brads. Board measure table. Strength of materials. Stresses for structural timbers. Contents of brick walls.

IV. Short cuts to roof framing. Directions for Griffith's Framing Tables.

V. Estimating. Excavations. Masonry. Slate. Plaster. Painting.

Bibliography of References Index

CARPENTRY