NASCLA - Principles and Practices of Commercial Construction Exam Questions and Answers, Exams of Construction

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NASCLA - Principles and Practices of

Commercial Construction Exam

questions with correct answers

When freely dropping concrete into forms, you should never be more than how far of a distance away? - ANSWER -1 meter For concrete to be placed in water there is a special method that is used. What is the method? - ANSWER -tremie In order to have 3/4 hour fire rating, a wood column in a wood structure should be what typical size or larger if supporting floors? - ANSWER -8 x 8" What should be used if an area is bound to have high traffic or wear? - ANSWER -laminated decking When dealing with concrete, what type of frame has connections that are specially made to resist rotation which in turn weakens the overall structure? - ANSWER -cast in place When trying to decide where to place reinforcing bars in a concrete section, there are 2 things to consider. What are they? - ANSWER -cover, spacing Is 5" the least amount of cover for concrete cast against earth? - ANSWER -No The crevice that allows debris to be removed from a column form before positioning begins is known as what? - ANSWER -cleanout Before an article is erected, if the tensile reinforcement of the article is put under tension, what is this called? - ANSWER -prestressed A non load bearing wall panel is called a what? - ANSWER -curtain

If you want the cheapest way of attaching steel to steel in areas inside a shop, what would be the method? - ANSWER -weld Due to the hole being larger than the bolt, what type of connection would allow movement and change in load direction? - ANSWER -bearing Connections on steel buildings are typically connected with what type of bolt? - ANSWER -A To properly raise a base plate to the right height, you would use a what? - ANSWER -shim pack Is the name for the concrete running between the columns, beams and supporting walls known as a concrete slab? - ANSWER -No First you will prepare your sub grade. When concrete is poured into that sub grade you will then have a what? - ANSWER -slab on grade A thick combination of materials on a ______ slump are mixed together to be the topping of a concrete floor finish. - ANSWER -low The specific location of intersection between the web members and chords on a truss are what? - ANSWER -panel points A prestressed concrete joint that is keystone shaped can extend up to how many feet? - ANSWER - 36 How far can a T shaped joist support spread? - ANSWER -60' What is the protection for heat flow through a material known as? - ANSWER -R factor In stucco, control joints are to be placed every how many feet to prevent cracking? - ANSWER -20'

This will be used to figure out drainage slope and what is necessary for the landscape. - ANSWER - surface evaluation This will be used to calculate approximate cost and find out foundation needs. - ANSWER -subsurface investigation What psd is the acceptable relative bearing strength for thick sand? - ANSWER -6, What type of clay has an acceptable relative bearing strength of 1,600 psf? - ANSWER -firm Sedimentary rock has an acceptable relative bearing strength of how much? - ANSWER -20,000 psf When certain materials don't stick together very well under pressure like with sand, it is said to be what? - ANSWER -cohesionless A ___________ , while costly, is recommended to investigate subsurface soil. - ANSWER -test pit What plays a big part in determining the cost of excavating and the soil bearing capacity? - ANSWER - groundwater level What is a device utilized in figuring out the bearing capacity of subframes and manages compaction? - ANSWER -penetrometer What is a position of identified height when surveying? - ANSWER -benchmark Device used in surveying that will only operate on a flat surface is a what? - ANSWER -level Is the variation in height involving two different points measured using a leveling rod? - ANSWER -Yes When using a leveling rod, the reading at Point A is 15ft and the reading at Point B is 10ft with the difference being 5ft which is considered the what? - ANSWER -elevation, grade

The equation that is used for determining the height or grade is HI = BM + __________. - ANSWER -BS (back sight), HI (height of instrument), BM (benchmark) When collimating, you have to correct the instrument so that the line of sight is at a 90 degree angle to which axis? - ANSWER -horizontal What is set by a surveyor and shows where the borders are? - ANSWER -monument When dirt is transferred or bothered, which usually causes an increase in quantity, this is called what? - ANSWER -bulking, soil swell If sand or gravel is disturbed or moved, the swell that it associates with is what percent? - ANSWER -12% Top area, bottom area and vertical height are what you need to know in order to figure out the size of a what? - ANSWER -excavation How many factors must be considered when deciding what type of devices to use in order to carry out an excavation? - ANSWER - 6 Slurry walls, interlocking steel sheet piling and steel soldier piles are the three ways in which to support what in the region of excavation? - ANSWER -earth walls What is the recommended system to use when the site consists of problematic soil or its wet? - ANSWER

• slurry walls Shoring is the _______ support utilized when digging infringes upon another structure. - ANSWER - temporary What is the permanent support for already in place structures that enlarges their foundation to give another lower level? - ANSWER -underpinning

What is a roadway that is easy to care for and repair in sections? - ANSWER -flexible bituminous You only use _________ (a type of pile) for a level load. - ANSWER -sheet pile You would use this when the load capability is dependent on the end cross sectional area and the bearing force of the material. - ANSWER -bearing pile What pile can last in water for no definite amount of time, doesn't weigh much and gives a greater amount of skin abrasions? - ANSWER -wood Is a shell type cast-in-place made using steel and concrete? - ANSWER -Yes And angle cannot be more than what for formwork? - ANSWER -span/ What form will sustain lateral concrete pressure? - ANSWER -vertical What is how much all of the formwork and concrete weighs together? - ANSWER -dead load A fundamental part of the wall form that is utilized to hold the form up beneath any type of sideways pressure is called a what? - ANSWER -brace What is utilized to form and hold concrete until it sets? - ANSWER -sheathing If you set a _______ it will create a hole in concrete. - ANSWER -buck In case the concrete shrinks, if you used a _______ joint it will help to manage cracking in the slabs. - ANSWER -tapered, beveled What joint, when there is contraction, will manage cracking? - ANSWER -control

Are pebbles an aggregate? - ANSWER -No Aggregates make up no less than what percent of the total volume of concrete and will determine its worth? - ANSWER -60% Aggregate no greater than how many inches is required for a unreinforced 4" wall? - ANSWER -3/4" Each level should be compressed with a rod how many times for a slump test? - ANSWER - 25 What percent of the mixing water must be positioned in the drum prior to adding any dry materials? - ANSWER -10%