The third-floor stairs of a commercial office building are ready to be poured with concrete. The supervising engineer is requested to check and accept the treatment of stair reinforcement and concrete construction joints, After inspection, the engineer found that there are general defects (honeycombs) in the appearance of local concrete structures of stairs. (1) What are the construction treatment measures for stair concrete construction joints? (2) What are the acceptance contents of stair reinforcement works? (3) How should the general defects of local stairs be treated

Q: A concrete masonry unit is tested for compressive strength and produces the following results:…

A: Given, P = 120000 lb Ag = 130 in2 Vg = 960 in3 Vn = 447 in3

Q: After concreting is completed, your project manager raises concern about the quality of the concrete…

A:

Q: Concrete Compressive Strength test Discussion: 1.Why did you use three samples? 2. What changes do…

A: Note: Hi! Thank you for the question As per the honour code, We’ll answer the first question since…

Q: Question 1 Which material is mold-resistant? Cork Bamboo Mycelium Cob Question 2 What was the main…

A: Construction materials are things that are utilized in buildings. Buildings have been made using a…

Q: Is the inspector reponsible to reject the faulty materials?

A: An inspector presents complete on-site observations to the engineer to control the materials,…

Q: What problems are likely to occur if concrete has too low a slump? Too high a slump? How can the…

A: What problems are likely to occur if concrete has too low a slump?   Concrete with a low slump has a…

Q: (4) Three concrete specimens with the size of 200x200x200mm³ were prepared for compressive test.…

A:

Q: please answer all questions ,thanks ! (a)What has cross-sectional shapes?  (b)What commonly used…

A: (a)What has cross-sectional shapes? (b)What commonly used type of cross-sectional study? (c)Why is…

Q: In the context of concrete structures, what is shrinkage? How does it occur? Discuss the factors…

A: Shrinkage:-  The decrease in either length or volume of material results from changes in moisture…

Q: 6.38 What is the source of fly ash? Why is fly ash sometimes added to concrete? What are the…

A: Given : fly ash  To  determine : 1)source of fly ash  2)Why added in concrete  3)Different class of…

Q: You see the concrete looks dry as it is being placed as a slab. a) If you decide to spray some…

A: If the concrete is not set yet, then concrete is still in form of fresh concrete. By spraying extra…

Q: A portion of a normal-weight concrete masonry unit was tested for absorption and moisture content…

A: ASTM C140  Mass of unit as received, Mo = 7024 g Saturated mass of Unit, Msat 7401 g Oven-dry mass…

Q: In order to evaluate the sustainability of non-potable water available in the job site for mixing…

A:

Q: In order to evaluate the suitability of nonpotable water available at the job site for mixing…

A: Given values: Compressive strength of mortar cubes after 7 days of curing tested and failure loads…

Q: On the 28th day after concrete was mixed, a 6.00-in-diameter concrete cylinder failed in a…

A: Given data,Diameter of cylinder d = 6 inCompressive load P = 145000 lbFactor of safety  = 5

Q: Problem 6: Find a real-world reinforced concrete failure. Was it a strength or service limit state…

A: We need to discuss real world reinforced concrete failure and if design code were changed after that…

Stair construction and layout

Stair is a type of vertical transportation in a building which consist of a series of steps in a flight of stairs that enable the vertical movement of people and materials from one floor to another. A staircase consists of steps that comprises of riser & tread, handrail, baluster, stair stringers, newel post and waist slab. The construction of staircase with all the components is termed as stair construction. A staircase is an enclosure that contains the entire stairway. The materials used for the construction of stairs are bricks, reinforced cement concrete, stone, lumber, steel and a combination of these materials.