CAREER INSTITUTE OF TECHNOLOGY INSTRUCTOR: MR. BRIAN IASIELLO Study Guide Chapter 4: MASONRY CONSTRUCTION EQUIPMENT structioneDEFINITIONS: Corner poles- Eliminates the need for constructing masonry leads Dense Industrial 65 - The industry standard recognition for sawn planking. Point up - The process of filling mortar joints. Sawn planking - Scaffold boards sawn from timber wood. Scaffold buck - Another term for a scaffold end frame. Supported scaffolds - Platforms supported by legs, beams, or other approved rigid supports. Suspension scaffolds - Platforms suspended by ropes or other non-rigid. STUDY GUIDE: ***If electrical problems occur tell your instructor*** *Power operated equipment is more dangerous, it continues to operate. 1st thing a student should do before attempting to operate a piece of power equipment is check for any loose parts. A. Mortarboards and Pans: 1. Made of wood, fiberglass, steel, or polyethylene, most mortar boards have 24” to 30” square shapes. a. Round, 55-gallon steel drum lids are sometimes used as mortarboards. b. The steel or polyethylene mortar pan measures approximately 30”X 30” and 7” deep. 2. Mortarboard or mortar pan stands made of tubular steel fold for easy transportation. B. Mortar Box: 1. Mortar is mixed manually in a mortar box made of steel or polyethylene. C. Mortar Hoe: 1. A mortar hoe is used to manually mix or temper mortar in a mortar box or wheelbarrow. D. Shovels: 1. Both round point and square point shovels are used in masonry. a. The round point shovel is designed for ground digging. b. The square point shovel is designed for handling loose materials such as sand, gravel, and soil. Both are used for shoveling mortar and sand. c. Either style is available with long handles or short, “D” handles. E. Rakes, Mattocks, Picks, and Scrapers: (Ground Tools) 1. A heavy-duty rake is used to level or clean up the work area. 2. A pick or mattock is used for digging. 3. A frequent use of scrapers is to remove hardened mortar from foundation footings, concrete surfaces, and masonry walls. F. Wheelbarrows: 1. Wheelbarrows are used to transport brick, block, and mortar. a. A brick and block wheelbarrow is made of seasoned hardwood. b. Tray wheelbarrows are used to transport mortar, sand, and other aggregates. G. Brick Tongs: 1. Made from welded steel or malleable iron, brick tongs permit quick, single-handed carrying of several brick. 2. Avoid lifting above your chest. H. Mortar Mixers: 1. Either gasoline engines or electric motors power mortar mixers. a. The slow-turning paddles mix the masonry cement, sand, and water in a fraction of the time taken to mix manually with a mortar hoe. I. Masonry Saws: 1. Electric or gasoline powered masonry saws make quick and accurate cuts on all types of masonry materials. 2. The large, stationary saw is equipped with a 14” or 16” diameter abrasive or diamond blade. 3.Hand-held electric or gasoline saws are available also. 4. The compact electric 5’ tuck pointers grinder removes mortar joints quicker than hand chiseling. 5. High-speed diamond-coated router bits permit using a router to cut out mortar joints. J. Paver Splitters: 1. Paver splitters operate on the principle of mechanical leverage or hydraulic pressure, applying force to solid masonry units that is intended to break them. K. Grout Bags: 1. A grout bag is a heavy vinyl bag with a metal tip and is used to fill mortar joints. L. Grout Guns: 1. Mortar is fed through the tip of a grout gun by an auger powered by an electric drill. M. Scaffolding: 1. Scaffolding is a temporary work platform designed to accommodate both workers and materials. 2. Supported scaffolds are platforms supported by legs, beams, or other approved rigid supports. 3. Suspension scaffolds are platforms suspended by ropes or other non-rigid means from overhead. 4. The 5’ wide step-type end frame scaffolding is made of welded, tubular steel. a. Being no more than 5’ in height, structural metal coupling pins permit multitiered assembly of this type of scaffolding. b. Two end frames are connected with diagonal braces. 5. The 6’ 4” or 6’ 6” tall walk through end frame scaffolding allows the entire 5’ width of the end frames to be planked for accommodating the materials and workers. a. This scaffolding also requires diagonal bracing. b. Insert pins permit stacking. c. The design of walk through frames permits alternate height positions for side brackets. * OSHA standards permit brackets supporting cantilevered loads to only support personnel unless a qualified engineer has designed the scaffold for other loads. 6. Both base plates and leveling screw jacks are designed for ladder type and walk through end frame scaffoldings. a. Rigid base plates prevent the tubular scaffold frames from sinking into the ground. b. Leveling screw jacks permit leveling scaffolding setups. 7. Material platform scaffolding is free-standing scaffolding requiring no bracing between panels. 8. The scaffold towers or continuous climbing platform scaffolding are mast-climbing work platforms that can stand freely up to 70’ high. 9. Guardrails prevent falls. a. Guardrails consist of vertical posts, horizontal top rails, and mid-rails. 10. Toe boards extending 31⁄2” vertically above the exposed edges of platforms prevent falls of materials and debris from the edges of planking. N. Scaffolding Planking and Platforms: 1. Wooden planks or platforms bear the loads of both workers and materials. a. OSHA standards require sawn wood planks to meet the industry standard known as Dense Industrial 65. b. Construction-grade material is not suitable for scaffolding planks, because it is engineered for supporting a load on edge rather than when laid flat. 2. Laminated Veneer Lumber, also known as LVL, is used for scaffolding planks. 3. A scaffold platform consists of a plywood or metal deck supported by an aluminum frame. O. Scaffold Weather Enclosures: 1. Reinforced polyethylene weather enclosures attached to the scaffold framing with special clips prevent precipitation from halting work. P. Swivel Head Hoist Arm and Wheel: 1. The gin wheel or well wheel is a 10_ to 12_ pulley. The attached rope is used to hoist materials to most heights. Q. Builders’ Levels: 1. Builders’ levels are used to lay out and level footings, foundations, and other walls. 2. The two classifications of builders’ levels are glass optical lens levels and laser light levels. a. Optical levels require two persons to check results. b. Laser levels permit one person alone to verify level footings, masonry corners, or walls. R. Corner Poles: 1. Corner poles or masonry guides eliminate the need for constructing masonry leads. 2. Telescoping braces are available for bracing corner poles when framework is not present.