1. Pencils are made of graphite rather than lead that are considered a hazard.2. Charcoals are made fromm willow and vine sticks, where wood cellulose has beenheated without moisture to create the black color._3. Drawing inks are usually solvent-based._4. Permanent felt tip markers used in design or graphic arts contain solvents._5. Spray mists are particularly hazardous because they easily inhaled._6. The hazards present to aerosol sprays are pigments and solvents._7. Asthmatic persons prefer to use oil pastels than dusty pastel sticks._8. Spray booth that exhausts to the outside is necessary when usingspray cans._9. Blow off excess pastel or charcoal dust with your mouth.10. Alcohol-based markers are less toxic than aromatic solvent-based markers.11. Solvent-based drawing inks and permanent markers should be used with gooddilution ventilation.12. Pastels can contain toxic pigments such as chrome yellow and cadmium pigment.13. Colored chalks are not considered nuisance dusts.14. To clean off dusts, wet-mop or wet-wipe all the surfaces.15. A respirator is a must to prevent inhalation of dusts problems.

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Answered: uP IPU pra Zard.

Engineering

Civil Engineering

uP IPU pra Zard.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Alloys

An alloy is an admixture of two or more metals or a metal and a non-metal. Since ancient times, man has been using alloys. Alloying helps to retain the properties of the parent matter, such as hardness, strength, toughness, ductility and is corrosion-resistant. Copper alloys such as brass have antimicrobial properties that help to fight against (Coronavirus disease 2019) COVID-19 and other hospital-acquired infections. Some common alloys are brass, bronze, solder steel, etc. Most alloys have a lower melting point than their constituents. This is due to the presence of a nonmetal as one of the constituents that behaves as an impurity and restricts the raise of melting point.

Question

1. Pencils are made of graphite rather than lead that are considered a hazard.
2. Charcoals are made fromm willow and vine sticks, where wood cellulose has been
heated without moisture to create the black color.
_3. Drawing inks are usually solvent-based.
_4. Permanent felt tip markers used in design or graphic arts contain solvents.
_5. Spray mists are particularly hazardous because they easily inhaled.
_6. The hazards present to aerosol sprays are pigments and solvents.
_7. Asthmatic persons prefer to use oil pastels than dusty pastel sticks.
_8. Spray booth that exhausts to the outside is necessary when using
spray cans.
_9. Blow off excess pastel or charcoal dust with your mouth.
10. Alcohol-based markers are less toxic than aromatic solvent-based markers.
11. Solvent-based drawing inks and permanent markers should be used with good
dilution ventilation.
12. Pastels can contain toxic pigments such as chrome yellow and cadmium pigment.
13. Colored chalks are not considered nuisance dusts.
14. To clean off dusts, wet-mop or wet-wipe all the surfaces.
15. A respirator is a must to prevent inhalation of dusts problems.

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