Strugglest
New member
- Joined
- Mar 4, 2020
- Messages
- 1
Hello all. I have a real-life problem here as part of some occupational health research I am conducting.
I am trying to compare the amount of respirable material created by conducting two different jobs. I would also like to compare the health hazards from liberating a potentially hazards material during cutting procedures. The problem I need help with is how to compare these two, I am trying to establish the health implications to workers in different industry. As this is a work in progress Im interested in news to approach this problem so any help is appreciated.
As you can see in Example 1 the worker is exposed to low volumes of highly hazardous material. In example 2 the worker is exposed to huge volumes of dust with a lower content of hazardous material. I need to try to work out which worker is inhaling more of hazardous material X. Is it as simple as dividing the quantity of dust in example 2 by 3 to make them directly comparable? I feel silly asking but I haven’t done any mathematical problem solving in ages, I feel like I have dyscalculia. Im reasonably sure my workings are correct for Question1. I just need help developing the comparison.
Example 1. Material A is cut using a dry saw. The penetration in material A is 1 meter long 40mm deep and the saw blades kerf is 2mm. The material being cut contains 90% Hazardous material X.
In one hour 30 cuts can be made.
Example 2 A pneumatic hammer, drills through material B. Material B is 1 meter thick and the hammer has a diameter of 200mm. The material being cut contains 30% hazardous material X.
In one hour 18 meters can be drilled.
Question 1 How much material has been removed and turned to respirable dust after 1 hour.
Example 1. 100 x 0.2 x 4= 80cm³ @ 90% Hazardous material X.
80cm³ x 30 =2400cm³ @ 90% Hazardous material X.
Example 2. 3.14(10)²(100)
3.14(100m²) (100)
10,000 x 3.14
31,400cm³ @ 30% Hazardous material X.
31,400cm³ x 18 = 565,200cm³ 30% Hazardous material X.
Cheers everyone.
G
I am trying to compare the amount of respirable material created by conducting two different jobs. I would also like to compare the health hazards from liberating a potentially hazards material during cutting procedures. The problem I need help with is how to compare these two, I am trying to establish the health implications to workers in different industry. As this is a work in progress Im interested in news to approach this problem so any help is appreciated.
As you can see in Example 1 the worker is exposed to low volumes of highly hazardous material. In example 2 the worker is exposed to huge volumes of dust with a lower content of hazardous material. I need to try to work out which worker is inhaling more of hazardous material X. Is it as simple as dividing the quantity of dust in example 2 by 3 to make them directly comparable? I feel silly asking but I haven’t done any mathematical problem solving in ages, I feel like I have dyscalculia. Im reasonably sure my workings are correct for Question1. I just need help developing the comparison.
Example 1. Material A is cut using a dry saw. The penetration in material A is 1 meter long 40mm deep and the saw blades kerf is 2mm. The material being cut contains 90% Hazardous material X.
In one hour 30 cuts can be made.
Example 2 A pneumatic hammer, drills through material B. Material B is 1 meter thick and the hammer has a diameter of 200mm. The material being cut contains 30% hazardous material X.
In one hour 18 meters can be drilled.
Question 1 How much material has been removed and turned to respirable dust after 1 hour.
Example 1. 100 x 0.2 x 4= 80cm³ @ 90% Hazardous material X.
80cm³ x 30 =2400cm³ @ 90% Hazardous material X.
Example 2. 3.14(10)²(100)
3.14(100m²) (100)
10,000 x 3.14
31,400cm³ @ 30% Hazardous material X.
31,400cm³ x 18 = 565,200cm³ 30% Hazardous material X.
Cheers everyone.
G