Contraction joints: ON All of the above O B) Allow the concrete to move both horizontally and vertically OC Minimize random cracks

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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Contraction joints:
O A All of the above
O B) Allow the concrete to move both horizontally and vertically
OC) Minimize random cracks
O D) Should be cut to a depth of one-half the slab thickness
The most common method for placing concrete for sidewalks is
O A) Buckets and Cranes
O B) Chutes
OC) Conveyors
O D) Pumping
What is the effect on the properties of hardened concrete if plastic concrete freezes
for an extended period after placing?
OA) All properties will be enhanced in quality
O B) No effect on concrete properties
OC) All properties will be reduced in quality
O D) Concrete strength decreases but freeze/thaw resistance increases
Bull floating is done:
OA Immediately after hand floating
O B) Immediately after bleed water has evaporated
OC Before screeding
O D) Immediately after screeding
Transcribed Image Text:Contraction joints: O A All of the above O B) Allow the concrete to move both horizontally and vertically OC) Minimize random cracks O D) Should be cut to a depth of one-half the slab thickness The most common method for placing concrete for sidewalks is O A) Buckets and Cranes O B) Chutes OC) Conveyors O D) Pumping What is the effect on the properties of hardened concrete if plastic concrete freezes for an extended period after placing? OA) All properties will be enhanced in quality O B) No effect on concrete properties OC) All properties will be reduced in quality O D) Concrete strength decreases but freeze/thaw resistance increases Bull floating is done: OA Immediately after hand floating O B) Immediately after bleed water has evaporated OC Before screeding O D) Immediately after screeding
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