By US Government US Army
This can be the preferable guide for studying the best way to do simple via complicated paintings with concrete and cement. first-class for newcomers via complex clients. box handbook 5-428 is essentially a coaching consultant and reference textual content for engineer group of workers utilizing concrete and masonry fabrics in box building. The handbook has elements: Concrete (Part 1) and Masonry (Part 2). half 1 (Concrete) Covers the actual features, houses, and parts of concrete: combos, layout, and development of types; and with bolstered concrete and box building tactics. half 2 (Masonry) Addresses the mason's instruments and kit in addition to the actual features and houses of concrete blocks, bricks, and structural clay tiles. It additional explains development techniques and strategies for those masonry devices. Appendix A includes an English to metric dimension conversion chart.
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Additional resources for Concrete And Masonry Handbook [US Army FM 5-428]
Example text
Divide the retaining wall into two sections, the wall portion and the footing. A close examination of Figure 3-4 shows the wall cross-section is a trapezoid that is 14 feet, 9 inches high, 8 inches wide on one end, and 1 foot wide on the other. 3-17 FM 5-428 Chaptr 3 Proportioning Concrete Mixtures Figure 3-4. Retaining wall 3-18 FM 5-428 Chaptr 3 Proportioning Concrete Mixtures Step 2. Calculate the waste factor (since the volume is less than 200 cubic yards, the waste factor is10 percent). 1 cu yd Step 3.
If the value falls between two values in the column, round up to the nearest given value. Move right to the column identified by the sheathing thickness. (Always use the strong way for plywood when possible). This number is the MSS in inches. 4-7 FM 5-428 Chptr 4 Form Design and Construction Table 4-1. Maximum stud (joist) spacing for board sheathing Maximum Concrete Pressure, in Pounds per Square Foot 4-8 Nominal Thickness of S4S Boards, in Inches 1 1 1/4 1 1/2 2 75 30 37 44 50 100 28 34 41 47 125 26 33 39 44 150 25 31 37 42 175 24 30 35 41 200 23 29 34 39 300 21 26 31 35 400 18 24 29 33 500 16 22 27 31 600 15 20 25 30 700 14 18 23 28 800 13 17 22 26 900 12 16 20 24 1,000 12 15 19 23 1,100 11 15 18 22 1,200 11 14 18 22 1,400 10 13 16 20 1,600 9 12 15 18 1,800 9 12 14 17 2,000 8 11 14 16 2,200 8 10 13 16 2,400 7 10 12 15 2,600 7 10 12 14 FM 5-428 Chptr 4 Form Design and Construction 2,800 7 9 12 14 3,000 7 9 11 13 Table 4-2.
Abrasion resistance increases as the compressive strength increases. ● Watertightness. Air-entrained concrete is more watertight than nonair-entrained concrete since entrained air prevents interconnected capillary channels from forming. Therefore, use air-entrained concrete where watertightness is a requirement. AIR-ENTRAINING MATERIALS 2-54. Air-entraining admixtures are usually liquid derivatives of natural wood resins, animal or vegetable fats or oils, alkali salts of sulfated or sulfonated organic compounds, and 2-18 FM 5-428 Chptr 2 Concrete Components water-soluble soaps intended for use in the mixing water.