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Heavy duty refers to the weight bearing capacity of the scaffold. Standard limits for heavy duty scaffolding is 75 lbs/square foot. As far as height restrictions, If the scaffold is greater than 3' wide, then the scaffold has to be guyed, tied, or braced in every 26' vertically and every 30 horizontally. If it is less than 3' wide, then it has to be guyed tied or braced every 20' vertically with the same horizontal distance.
Heavy duty scaffold is required for holding brick or cement blocks while bricklaying. Scaffolding is rated in terms of pounds per square foot (lb/sq*ft). There are three ratings: heavy (75), medium (50) and light (25) duty. You should only load scaffolding to 1/4 of their rating. You multiply the rating by the surface area of the plank inside the scaffold and divide by four. For example, a bricklayer is using a heavy-duty scaffold that holds a 6X2 foot platform inside the framework. This scaffold should hold no more than 6x2x75/4 = 225 Lb. of bricks at any time. Please improve this answer by adding how You know the difference in scaffolds just by looking.
gallows, or a scaffold Oxford dictionary states that a scaffold is a "platform" whilst a gallows is a "frame for hanging criminals". So, it appears the scaffold is the platform on which the gallows is built.
Before you can calculate the load bearing capacity of a scaffold, you will need to know there are three types of scaffolding; light duty, medium duty, and heavy duty. Now you can calculate the load bearing capacity by using the height to base ratio.
Light duty
The thermal draperies may require heavy duty hanging hardware. This can be found and purchased at hardware stories (such as Lowes). A variety of styles are available. You may need to screw the hardware into the wall studs to support the weight of the curtains.
For a simple household hanging scale the price range from as low as $3.00 up to around $20.00. These kind of scales are used for weights up to around 50lbs but more heavy duty scales are available for weights over 50lbs. These heavy duty scales range in price from $50.00 up to as much as several hundred dollars.
The one I own is light duty. The one I drive for work is heavy duty.
Janome 11558 Heavy-duty Sewing Machine has some heavy duty needles.
Freightliner, Kensworth, Peterbilt and Sterling sell heavy duty trucks. Chevy Silverado and Dodge Ram are heavy duty pick-ups. A new heavy duty truck can cost up to $150,000.
what education do I need to become a heavy duty mechanic
Heavy Duty - Xtatik album - was created in 1997.