Ahelical compression spring is required to provide a minimum force of 80 n at installation and have a working deflection of 25 mm. the spring rate is 35 n/mm. the coil must fit in a 50 mm diameter hole with 2.5 mm clearance. the spring has squared and ground ends and is made from astm a227 4.0 mm diameter wire, without presetting. using a 15% clash allowance, find: - (i) the number of coils required; and (ii)the free length of the spring.

answer:

the correct answer is d

One of the benefits of working with chlorinated polyvinyl chloride (CPVC) pipe is that it can be cut with a variety of different tools that don’t require any electricity or heat. However, different cutting methods are preferred over others, depending on the application.

When cutting CPVC pipe, it is important to make a square, flat cut. An uneven cut limits the bonding area and weakens the fitting.

To help you make the best possible cut, we’ve put together the following dos and don’ts when cutting CPVC pipe in different situations.