CSLB Concrete C8 License Practice Test #3 Questions And Solutions

CSLB Concrete C8 License Practice Test #3 Questions And Solutions The type and quality of the formwork is mainly depends upon the ___________. - answer Concrete Finish Desired. Roadway drainage involves __________ of surface water from the travelled way. - answer Collection -Conveyance -Removal Gloss level of the sealer generally depends on the percentage of ______ that contains as solids. - answer Acrylic Resin The reinforcement detailing required for slab at the corners is __________ percent of the reinforcement required at the mid span. - answer 25. Explanation: Additional steel reinforcement required at the corners for uplifting. The normal dead weight of the concrete considered for formwork design is _______ lbs/sqft. - answer 145-150 What is/are the advantage(s) of using the sealer for concrete finish? - answer -Can add value to the surface finish -Makes concrete easier for maintenance -Protects against wear & tear Explanation: All are the benefits of using the sealer. In addition sealer prevents entry of water, block the dirt, grease etc. Apart from making concrete strong in tension, steel is added to concrete to_________. - answer Enable moulding Explanation: Without reinforcement steel, concrete cannot be moulded to desired shape. The minimum lapping of the steel reinforcement recommended for COLUMN BARS is _______ times the bar diameter. - answer 40 Explanation: Sometimes it can be up to 50 times of the bar dia. Which of the following preparations are to be done before the sealer application? - answer Protective clothing -Ventilation -First aid Explanation: Due to the high toxicity of the fumes produced when utilizing a concrete floor sealer, it is important that the area is properly ventilated. What is the required thickness of the plywood that is used for formwork? - answer ¾ Some of the major considerations of good roadway drainage design are: - answer -Aesthetics -Subgrade infiltration -User safety The slope of the side gutter from the edge of the shoulder to the bottom of the gutter, shall NOT be more than_________. - answer 6:1 If the temperature during the concrete repair/restoration works is below________ ͨ F, warm water needs to be used. - answer 50, Explanation: Additionally insulation covers are also required. In columns where multiple layers of reinforcement steel is required to be arranged in groups, the minimum distance between each group must be greater than equal to __________ inches. - answer 4 Explanation: 4 inches between each bundle of bars. A jack system was used for concreting of a slab spanning 15 feet x 20 feet. As per the guidelines, the formwork shall be removed only after __________ days. - answer 14 days. Explanation: Formwork of the slab with more than 14 feet span should be retained up to 14 days. Which of the following factors determine the selection of a suitable sealer? - answer -Safety -Performance -Appearance The concrete repair works shall not be carried out if the temperature is below________ ͨ F - answer 40 Explanation: Low temperature causes freezing and thawing. The KEY difference between the form work and falsework is ___________. - answer Falsework is temporary Explanation: Falsework is temporary used for minor repair / short duration work. Which of the following not a component of a formwork? - answer Rafter The factor of safety used for the formwork loads is _______. - answer 2.0 All the concrete drainage facilities are to be designed to the velocity equivalent to __________. - answer Self-cleansing velocity Standard sealers are generally __________. - answer -Water based -Solvent based Explanation: Sealers are available in two variants, water based and solvent based.