specifications. If your vehicle was originally charged with R12 refrigerant, for example, the oil type specified, 'mineral', will not apply. Additionally, General Motors issues Bulletin # 02-01-39-004B replacing PAG 150 oil with a lower viscocity oil.
The term square in reference to roofing materials refers to 100 square feet of roof area. One square of slate is the amount of slate that it takes to cover 100 square feet of roof area. A 10 foot x 10 foot section of roof would equal one square. So would a 4 foot x 25 foot section. Ditto for a 5 foot x 20 foot.
Multiply the number of roofing squares for a low-pitch roof by 1.06 to 1.08 to get the square roof area. Multiply the number of roofing squares for a medium-pitch roof by 1.12 to 1.25 -- or by 1.3 to 1.42 for a high-pitch roof -- to get the square roof area.oth the roof area and pitch contribute to the cost of a roofing job. Calculate square footage for a roof by measuring and by performing some basic math equations. With the area measurement, you can learn the approximate cost of a new roof.