Special Concrete Shear Wall Design

Astm a706 grade 80 reinforcement with special additional requirements is being used as concrete shear wall longitudinal reinforcement for the 1500 mission street.

Special concrete shear wall design.

Typically shear walls are constructed as lift core walls and around the staircases. The shear wall is a concrete wall constructed from the foundation level to the top of the building. Together these elements comprise the seismic force resisting system sfrs. Strength reduced from 136 7 to 116 8 in kips.

Reinforced concrete shear wall analysis and design. Spwall is a program for the analysis and design of reinforced concrete shear walls tilt up walls precast wall and insulate concrete form icf walls. Shear wall analysis and design spwall software. Shear strength reduced from 7654 lbs to 6589 lbs.

This new connec tion system is different from typical shear wall connector systems included in building code proposed design pro cedures. The design and detailing requirements for special reinforced concrete shear walls have undergone significant changes from aci 318 11 to aci 318 14. Boundary element is a portion along wall and diaphragm edge including edges of openings strengthened by longitudinal and transverse reinforcement. Structural walls sometimes referred to as shear walls.

Seismic design of special reinforced masonry shear walls. The thickness and the length of the walls are determined as per the design requirements. Because a goal in the devel opment of this connection is to obtain code approval extensive experimental testing combined with analysis and de. 3 clear rather than the designed 2 clear.

To incorporate the use of high strength reinforcement into building systems. Let s discuss the concrete shear wall and shear wall design. 3500 psi concrete 5 10. A structural reinforced concrete shear wall in a 5 story building provides lateral and gravity load resistance for the applied load as shown in the figure below.

Shear wall while also acting as an ex terior curtain wall. The changes are a result of the unsatisfactory performance of many shear walls in the chile earthquake of 2010 and the christchurch new zealand earthquake of 2011. Bending strengthof the section has been reduced by about 15 shear strengthat wall base has been reduced by about 14. Shear wall section and assumed reinforcement is investigated after analysis to verify suitability for the applied loads.

It is a zone in a wall wherein a confinement reinforcement is needed. Another category in shear wall wall design is to determine the area of boundary element. A guide for practicing engineers the primary seismic force resisting elements in buildings are horizontal diaphragms vertical framing elements and foundations.