Course Name STRUCTURAL THEORY 2 Course Description The course covers the theory of structures analysis as applied to indeterminate structures such as indeterminate beams, planar and space frames and trusses subject to static loads; method of consistent deformation; three-moment equation; slope-deflection method; moment distribution; energy methods, matrix methods; and approximate method of analysis. Course Objectives After completing this course, the student must be able to: 1. Apply the fundamental principles of structural analysis for indeterminate structures. 2. Evaluate the structural behavior of indeterminate structures 3. Be analytical and systematic in the approach to problem solving 4. Prepare for design work
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Course Name STRUCTURAL THEORY 2 Course Description The course covers the theory of structures analysis as applied to indeterminate structures such as indeterminate beams, planar and space frames and trusses subject to static loads; method of consistent deformation; three-moment equation; slope-deflection method; moment distribution; energy methods, matrix methods; and approximate method of analysis. Course Objectives After completing this course, the student must be able to: 1. Apply the fundamental principles of structural analysis for
indeterminate structures. 2. Evaluate the structural behavior of indeterminate structures 3. Be analytical and systematic in the approach to problem solving 4. Prepare for design work
Course Outline 1. Review of deflections of structures 2. Introduction to statically indeterminate structures 3. Approximate analysis of statically indeterminate structures 4. Analysis of statically indeterminate structures by method of
8. A student may officially drop not later than the last day of dropping. A student is considered officially dropped only upon submission of the Instructor’s Copy of the dropping slip to his instructor/professor. A student whose class standing is failing and who is unable to take the midterm examination for any reason will be given a grade of 5.0 if the course was not officially dropped.
performance of a given structure under prescribed loads and/or other external effects, such as support movements and temperature changes. The performance characteristics commonly of interest in the design of structures are (1) stresses or stress resultants, such as axial forces,
shear forces, and bending moments; (2) deflections; and (3) support reactions.
Structural engineering is the science and art of planning, designing, and constructing safe and economical structures that will serve their intended purposes.
CODES
TWO TYPES OF CODES
GENERAL BUILDING CODES. Specify the requirements of governmental bodies for minimum design loads on structures and minimum standards for construction
DESIGN CODES. Provide detailed technical standards and used to establish the requirements for the actual structural design.
The ultimate responsibility for the design lies with the structural engineer.
National Structural Code of the Philippines (NSCP)
CODES
IDEALIZED STRUCTURES
ANALYTICAL MODELS
An analytical model is a simplified representation, or an ideal, of a real structure for the purpose of analysis. The objective of the model is to simplify the analysis of a complicated structure.
LINE DIAGRAM
A representation of the analytical model of the two or three dimensional body selected for analysis
LINE DIAGRAM
EXAMPLE Frame used to support a typical floor slab
EXAMPLE Fixed-connected members
EXAMPLE Reinforced concrete structures
EXAMPLE Timber structures
TRIBUTARY LOADINGS
Two ways how load on flat surfaces is transmitted to supporting structural elements
ONE-WAY SYSTEM
According to ACI 318 code, if L2 > L1 and if the span ratio (L2/L1) > 2, the slab will behave as a one-way slab.
Two ways how load on flat surfaces is transmitted to supporting structural elements
TWO-WAY SYSTEM
According to ACI 318 code, if the span ratio (L2/L1) ≤ 2, the slab is referred to as a two-way slab.
Two ways how load on flat surfaces is transmitted to supporting structural elements
TWO-WAY SYSTEM
According to ACI 318 code, if the span ratio (L2/L1) ≤ 2, the slab is referred to as a two-way slab.
EQUIVALENT UNIFORM LOAD FOR MAXIMUM BENDING MOMENT
S/L ≥ 0.5 or (L2/L1) ≤ 2 Let L = long span S = short span m = S/L
Equivalent Uniform Load of Trapezoidal Pattern
2
3
3
2mwSwe
Equivalent Uniform Load of Triagular Pattern
3
wSwe
THEORY II-LAB STRUCTURAL ANALYSIS OF A
TWO-STOREY BUILDING
PLATE 1 (the longer the delay, the lower your grade will be) Given: FRAMING PLAN - AUTOCAD, REVIT ARCHITECHTURE, SKETCH UP, etc.
for the meantime, submit a manual drawing of the framing plan which will be submitted on Monday, Nov 10, 2014. - Show how the load on the flat slab is transmitted to
the various structural elements Req’d: MINIMUM DESIGN LOADS & MINIMUM DIMENSIONS OF
STRUCTURAL ELEMENTS - (for verification purposes, specify which section of the
NSCP you based your preliminary design) Group presentation is on November 17, 2014. copies of CAD software, tutorials and NSCP code 2010 will be given-provide USB For further info/questions don’t hesitate to consult me in the faculty room. THANK YOU.
Dimension of Structural Members Slab thickness -125 mm Columns -300 mm x 300 mm BEAMS -250 mm x 400 mm -along grid A’ & 1’ 150 mm x 350 mm