Properly working brakes are essential to vehicle safety and reliability. When you depress your brake pedal and stop your tires from rotating, you need the confidence to know that your vehicle will come to a complete and precise stop. 1  Brake pads, shoes, drums, and rotors are made of materials that wear down from heat and friction, even under normal driving conditions.
In football, a down block means a block in the direction of the offensive center. The basic idea in down blocking is the blocker engages with and blocks the first player to come across his face. So if the OL / DL alignment is like this, a down block play on sweep to the right side (outside the RT) goes like this... RT RG C LG LT TE. LDE LDT RDT RDE.
Blocking is placed in-between longer lengths of floor joists to keep them from being able to twist and roll onto their sides. The 3-D diagram above shows what we call solid blocking. These short lengths of board are cut from the same stock that the floor joists are made from. When you build your deck, throw the floor joist boards that have gone wild (badly twisted or cupped) into a separate pile.