Precast L- shaped perimeter girders are often used because:   Question 5 options:   they have a good strength-to-weight ratio   they provide stability to the perimeter columns   they have a ledge that can support interior beams or slabs   all of the above

+ „blackboard.com/ultra/courses/_96287_1/cl/outline Question Completion Status: 4 8 9 10 A two span beam subjected to shear and flexure only is reinforced as follows: SECTION @ MIDSPAN @ FACE OF SUPPORTS TOP BARS 2-020 mm 5-Ø20 mm BOTTOM BARS 3-020 mm 2-020 mm Given: Stirrup diameter, ds = 10 mm Concrete fc = 21 MPa Steel rebar = 415 MPa Stirrup fy = 275 MPa %3D Beam size b xh = 270 mm x 450 mm Assume all bars laid out in single layer. Calculate the following: Tensile steel ratio in positive bending at midspan = (in 5 decimal places) kN m (nearest whole Design Moment strength of section at midspan for positive bending = 32°C Light rain ^ O O G ) ENG 1:42 pm ロ

(B) Calculate the amount of reinforcement for the concrete Roihfordad Conerete Basemont basement of water tank shown using ACI and BS approaches if Well Compact Soll 1- Min reinforcement is required 2- Use flexural steel ratio = 0.032 wwo0L->

A simply supported beam (Span = 25 ) has a seetion as shown below with normal-weichs concrete compressive strength fc- 4000 psi (normal weight, and steel reinforcement,fy=40,000 psi  1- find the modulus of rupture of the concrete per ACI318-10 2- find gross section properties to calculate the crracking bending moment (Mcr) 3-check whether the cross section is over -or under -reinforced  4-caclculate the nominal flexural strength of the cross section (Mn)

Q#1: Modify the reinforcement steel of the concrete sections shown below considering the seismic detailing.

Question 38 A simply supported beam 300 mm wide, 500 mm deep and spans 5 m supports a service super imposed dead load of 6 kN/m and service live load of 9 kN/m. Concrete strength f’c = 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015. Write your final answer to the nearest whole number.

Explain the how to calculate the pitch of the helical reinforcement.

A simply supported beam 3e0 mm wide, 500 mm deep and spans 5.2 m supports a service super imposed dead load of 7 kN/m and service live load of 6 kN/m. Concrete strength f's - 21 MPa and steel yield strength fy = 415 MPa. Concrete cover to bar centroid is 70 mm. Determine the required amount of tensile reinforcement in mm^2 as per provisions of NSCP 2015. Write your final answer to the nearest whole number.

Q4/ Complete the following statements as appropriate a- The amount of steel reinforcement is calculated according to the following formula b- The approximate estimation is c- Duration of maintenance is d- Electrical work calculate in e- The form area for the beam equal

The following diagram shows a partial floor framing plan of an elevated walkway building connecting an airport terminal building to the adjacent garage. The concrete floor is not post- tensioned. Material properties are: - Concrete weight: wt = 150 pcf - Concrete compressive strength: f'c = 4000 psi - Steel tensile strength: fy = 60 ksi - Stirrup consists of #4 bar - Framing members are not exposed to weather or in contact with soil. Use ASCE Table 4.1 to determine the design live load for this floor. 30-0¹ S Colm- Ö 90-0 - Mark 54 59 25 30-0¹ N BI -Sinder ASCE 7-10 Chapter 4 Live Load.pdf 50 psf 60 psf 100 psf 150 psf 2