Tag Archive for Tag: Example of Strength Design

Tag: Example of Strength Design Example of Strength Design of a Single Anchor Loaded in Shear

Using strength design, compute the design shear capacity of a 1/2-in. diameter, A307 bent-bar anchor with a 1-in. hook, embedded horizontally in a grouted cell of a nominal 8-in. wall with a specified compressive strength, f ′ m, of 1500 lb/in.2. Assume that the bottom of the anchor hook is embedded a distance of 4.5 in., and that the anchor

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Tag: Example of Strength Design Example of Strength Design of Unreinforced Masonry Shear Wall

Consider the simple structure of Fig. 5.21, the same one whose bearing walls have been designed previously in this book. Use nominal 8-in. concrete masonry units, f ′ m = 1500 lb/in.2, and Type S PCL mortar. The roof applies a gravity load of 1050 lb/ft to the walls; the walls measure 16 ft, 8 in. height to the roof,

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Tag: Example of Strength Design Example of Strength Design of Unreinforced Bearing Wall with Eccentric Axial Load Plus Wind

uniformly distributed wind load of 25 lb/ft2. The wall is as shown in Fig. 5.15. At each horizontal plane through the wall, the following conditions must be met: • Maximum compressive stress from factored axial loads must not exceed the slenderness-dependent values in Eqs. (3-12) or (3-13) as appropriate, reduced by a φ-factor of 0.60. • Maximum compressive stress from factored loads (including a moment magnifiers)

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Tag: Example of Strength Design Example of Strength Design of Unreinforced Bearing Wall with Concentric Axial Load

The bearing wall shown in Fig. 5.12 has an unfactored, concentric axial load of 1050 lb/ft. Using hollow concrete masonry units with face-shell bedding, design the wall. According to the 2009 IBC, and in the context of these example problems (dead load, wind load and roof live load), the following loading combinations must be checked for strength design: 1. 1.2D + 1.6W + f1L

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Tag: Example of Strength Design Steps in Strength Design of Unreinforced Bearing Walls

In the 2008 MSJC Code, design of unreinforced bearing walls is similar to  the design of panel walls, except that axial load must be considered. In Sec. 3.2.2 of the 2008 MSJC Code, no explicit equations are given for computing flexural strength. The usual assumption of plane sections is invoked, and tensile and compressive stresses in masonry are to be assumed proportional to strain.

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Tag: Example of Strength Design Strength Design of Unreinforced Bearing Walls

Basic Behavior of Unreinforced Bearing Walls Load-bearing masonry (without calculated reinforcement) must be designed for the effects of 1. Gravity loads from self-weight, plus gravity loads from overlying roof or floor levels 2. Moments from eccentric gravity load, or out-of-plane wind or earthquake 3. In-plane shear For now, we shall study Loadings (1) and (2). In Sec. 5.3, we shall study Loading (3), in

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