# Math

## Math

Materials test report
1) The characteristics being tested
Testing the tensile strength of radiarta pine and plywood. (Tensile strength is the ability of timber to resist forces, which pull the fibres apart with the direction of grain.)
2) Reasons for testing
I am designing and manufacturing a table. The table needs to hold plates of food etc.
3) A prediction of results
I predicted the radiarta pine would be strongest followed by furniture grade plywood and then second grade plywood.
4) Testing procedure – step by step
* Measure dimensions of each piece of timber
* Marked the middle of each piece of timber
* Marked 40mm in from each side of each piece of timber
* Clamped the timber 40mm in, to each bench
* Placed tape on the floor as a marker
* Measured from the floor to timber top
* Added 0.5 kilo weight on the center of timber and then measured height
* Repeat above step adding 1 kilo at a time for each piece of timber
5) A diagram of the test set-up
6) Numerical results in table or graph form
7) Observation in writing
* Timber was different thickness