Document oMB40K7709a0y9nYm1Q52yG9R

Industrial Buildings and Plant Layout These factors include over concrete, the laboratory floor was rubber Load Durability I Noise Drainage Resilience Appearance Illumination Maintenance Dustiness Heat conductivity Electrical conductivity Chemical composition tile, also laid over concrete Creosoted wood block floor, which is easy on the feet and with stands trucking, was used in a large machine shop Plans for the other plant specified a floor that would be resilient, moisture-resistant, and free of vibration To get these qualities, Since a principal cause of floor accidents 3-in creosoted square timbers were imbedded is slipperiness, the inherent slipping hazard in a base made of 3 in of tar concrete under of various tvpes of floor surfaces should be I xh in of tarred sand The subfloor was Vn-in ascertained salt-treated pine with a layer of waterproof Ordinary smooth iron or steel plates are paper The floor surface was 25/32-m hard unsafe Marble, slate, asphalt tile, linoleum, maple cement, and wood are reasonably safe if Asphalt is used in various flooring materials properly maintained and kept clean The It is dustless, plastic, odorless, and warm to safest floor materials are cork, dry' rubber, the feet Ifthe aggregate is siliceous, the mix creosoted wood blocks, asphalt, roughened ture is resistant to acid Ordinary grades concrete, and checkered plate The antici soften in hot weather and are not recom pated traffic and the nature of the process mended for heavy industrial trucking As will influence floor choice phalt tile, often used in offices, may become Inserts of various materials can be used to slippery when washed or not properly waxed reduce slippenness m specific areas or to Paving brick, if laid on a solid foundation combat conditions that cause rapid de like concrete, is satisfactory' for heavy traffic terioration of flooring For example, cast Cement mortar joints make a smooth surface metal inserts are used around woodworking Foundry floors have been made from hard- machines Sheets of soft lead may cover the burned bncks laid face up on a concrete base floor surface where acid is spilled occasion with sand-filled joints ally Drainage is provided so that the acid Concrete floors are used widely in ware can be washed away with water houses and factories A wood float finish on a Inserts should be installed flush with the mixture of pea gravel, sand, and cement gives surface of the floor An insert placed on top of the floor requires a bevel on every side a roughened surface that will not crack or "dust " A smooth finish is slippery when wet from which it can be approached The bevel Concrete does not withstand acids, and in should be long enough that a man will not some types of work employees consider con trip or lose his balance crete too hard and too cold Resilient nonslip Abrasive-coated labnc strips are made foi mats with low heat conductivity can be placed use on metal floor plates, the foot of stairs, over the concrete where workmen must stand stair nosings, and other high-hazard locations in one position for considerable periods of An adhesive binds the strips firmly to the time walking surface Cork tile is desirable for its insulation, Drainage is essential where wet processes resiliency, quietness, high nonslip rating, and are used In some instances, floor gratings ability to withstand light traffic for long peri are installed to reduce slippenness due to ods It is not suitable for wet locations or water and other liquids, especially along where there are heavy loadings, and it is ex passagewavs pensive The importance of selecting floor matenals Cast iron plates with checkered or other with suitable characteristics for the specific wise roughened surfaces laid tit cement or location is illustrated bv plans for two new asphalt are suitable for some tvpes of rough textile plants In one plant, the floor in the wear such as that in warehouses The slip spinning department was concrete overlaid ping hazard at the door sills of elevators may with maple parquet for resilience and dura be reduced by installing steel grating filled bility The dye house floor was acid-proof with concrete bnck For the office, asphalt tile was laid Lead is used for floors exposed to acids and 414