Identify what connects or binds the courses of each of the following wall materials:
Timbers:
Precast concrete wall units:
Stone:
Timbers: gravity or spikes
Precast concrete wall units: lips, pins, or anchors
Stone: gravity and friction
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What is an early indication that a bearing may be overheating?
A. solid or caked lubrication B. rust C. etched raceways D. pitting
Eight resistances are connected in series as shown. The unit of measure for resistance is the ohm. The resistance in a series circuit is the sum of all resistances in that circuit. Find the total amount of resistance in the circuit.
A. 
B. 
C. 
D. 
What term is used by the IRC to specify areas of access or exits provided by doors, windows, and hallways?
A. centerline B. egress C. escape D. accessible route
Technician A says that a buffing pad is cleaned with a brush. Technician B says that a polishing foam pad is cleaned with a spur. Who is correct?
A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B