Generally laid out parallel to property lines or other buildings.Easiest, quickest, most accurate way to lay out building’s corners.Building must be laid out prior to digging the footing and pouring it.in a 1:3 mix, 1 bag of cement and 250 pounds of sand will lay 100 eight inch blocks.Use the following as a guide to calculate the amount of cement and sand to purchase:.Masonry sand is fine sand while the sand used in concrete is coarse sand.Masonry cement: Type of cement used to make mortar while Portland cement is used to make concrete.Mix one part cement to 2½ to 3 parts masonry sand.Mortar: Bonding material made of sand and masonry cement.Use the dimensions to figure the number of blocks needed.Used at the corner when laying blocks Use the dimensions to figure the.Corner block: Square across one end and has ribs on the other end.Usually with three cores or holes in the block.Stretcher block: has ribs on both ends.Corner block and stretcher blocks are the most common.Total length and width in inches should be divisible by eight so that full blocks and half blocks will be used.When the standard 3/8 mortar joint is added, the block with one mortar joint is 8 inches high and 16 inches long.Mortar completes the dimensions (3/8 layer).Widely used to build agricultural structures.Easier to handle but have greater insulating value.Weighs half as much as a standard block.Made from Portland cement, water, and lightweight aggregates, such as cinders, slag, or shale.Made from Portland cement, water, sand, gravel, and crushed stone.Concrete masonry units, also called concrete blocks, come in two types and several standard sizes.Concrete blocks are strong, durable, fireproof, rodent and termite proof, and do not rot.Popular type of agricultural construction.Explain how to tool joints, patch holes, and clean smears.Explain how to mix mortar and lay blocks. Discuss how to plan and lay out a job. Construct, maintain and/or repair AFNR structures with concrete, brick, stone or masonry Follow architectural and mechanical plans to construct, maintain and/or repair AFNR structures (e.g., material selection, site preparation and/or layout, plumbing, concrete/ masonry, etc.). Copying a segment copying an angle bisecting a segment bisecting an angle constructing perpendicular lines, including the perpendicular bisector of a line segment and constructing a line parallel to a given line through a point not on the lineĪgriculture, Food and Natural Resource Standards Addressed!
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