Design completed Assemble parts Mix concrete Excavate trench
Answer Discuss in Comment
the shortest time required to complete the activity under favourable conditions the maximum time required to complete the activity under adverse conditions the time the activity would most often require if normal conditions prevail none of the above
Drag line Hoe Clam shell Dipper shovel
Hoe Drag line Clam shell Dipper shovel
Wet sticky clay Good common earth Well blasted rock Moist loam
Wet sticky clay Moist loam Sand and gravel Good common earth
Concrete Earth Ice Loose sand
Concrete Firm earth Loose sand Asphalt
"Scientists dream about doing great things. Engineers do them."
