Topic Objectives:
The intent of this topic is to apply the analytical techniques developed in the Masonry Beam module to walls.
Topic Directions:
Two class days will be devoted to this topic. To satisfactorily complete the topic, you must:
- Study the 4 sets of on-line lecture notes.
- Complete the reading assignment.
- Come to class prepared to discuss the following:
- Day 1: Introduction and Analysis.
- Day 2: Partially grouted walls and Design.
- Complete the homework assignment and submit as directed in the syllabus.
On-Line Lecture:
Reading Assignment:
Problem Assignment:
- Analysis:
- An 8-inch CMU partition is 16 ft high and is designed to carry its own weight
plus lateral wind load. Assume that the wall is minimally reinforced with #4 Grade
40 rebar spaced at 48" o.c., and it is simply supported at the top and bottom. Using
f `m=1900 psi and half-stress design, determine the allowable wind pressure,
ignoring the self-weight axial load.
- Design:
- Determine the amount of vertical reinforcement needed for an 8" CMU wall spanning
15 ft vertically. The steel is grade 40 and continuous inspection is provided. Assume
f `m=1500 psi and your wall is located in an area with a design wind
pressure of 15 psf, Z=.4 and I=1.0.
