ARCH 331 Note Set Su2012abn 1 Structural load Requirements International Building code (2012) ARCH 331 Note Set Su2012abn 2 Live Loads & Allowed Reductions ARCH 331 Note Set Su2012abn 3 Minimum Roof Loads ARCH 331 Note Set Su2012abn 4 Minimum Snow Loads ARCH 331 Note Set Su2012abn 5 Documentation of Loads
load exceeds 100 psf (4.79 kN/m2) except that the design live load for members supporting two or more floors is permitted to be reduced by a maxi- mum of 20 percent. Exception: For uses other than storage, where approved, additional live load reductions shall be permitted where shown by the registered design
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1 ARCH 331 Note Set Su2012abn 1 Structural load Requirements International Building code (2012) ARCH 331 Note Set Su2012abn 2 Live Loads & Allowed Reductions ARCH 331 Note Set Su2012abn 3 Minimum Roof Loads ARCH 331 Note Set Su2012abn 4 Minimum Snow Loads ARCH 331 Note Set Su2012abn 5 Documentation of Loads
Mechanics of Materials MECHANICS MATERIALS Mechanics of Materials 3 Lecture 5 Foundations Structures ARCH 331 F2008abn Mechanics of Materials external loads and their effect on deformable bodies use it to answer question if structure meets requirements of ± stability and equilibrium
ARCH 631 Note Set 10.1 F2013abn 3 Reinforced concrete is a composite material, and the average density is considered to be 150 lb/ft3. It has the properties that it will creep (deformation with long term load) and shrink (a result of
The nominal flexural strength Mn is the lowest value obtained according to the limit states of 1. yielding 2. lateral-torsional buckling 3. flange local buckling 4. web local buckling For a laterally braced compact section (one for which the plastic moment can be reached before local buckling) only the limit state of yielding is applicable.
1 Mechanics of Materials 1 S2009abn Lecture 4 Elements of Architectural Structures ARCH 614 E LEMENTS OF A RCHITECTURAL S TRUCTURES: F ORM, B EHAVIOR, AND D ESIGN ARCH 614 D R. A NNE N ICHOLS S PRING 2014 four mechanics of materials lecture www.carttalk.com
ARCH 331 Note Set 22.1 Su2014abn 5 Reinforced Concrete Beam Members Strength Design for Beams Sstrength design method is similar to LRFD. There is a nominal strength that is reduced by a factor which must exceed the factored design stress.
ARCH 331 Note Set 28.1 Su2014abn 2 Reinforced Masonry Design Structural design standards for reinforced masonry are established by the Masonry Standards Joint Committee consisting of ACI, ASCE and The Masonry Society (TMS), and presents allowable stress design as well as limit state (strength) design.
Connections Connections must be able to transfer any axial force, shear, or moment from member to member or from beam to column. Steel construction accomplishes this with bolt and welds. Wood construction uses nails, bolts, shear plates, and split-ring connectors. Single Shear - forces cause only one shear “drop” across the bolt.
ENDS 231 Symbols F2007abn 2 d depth, often cross-sectional (in, mm, m); perpendicular distance from a force to a point in a moment calculation (in, mm, m) dx difference in the x direction between an area centroid ( x) and the centroid of the composite shape (xˆ ) (in, mm) dy difference in the y direction between an area centroid ( y) and the centroid of the composite
Pure Bending in Beams With bending moments along the axis of the member only, a beam is said to be in pure bending. Normal stresses due to bending can be found for homogeneous materials having a plane of symmetry in the y axis that follow Hooke’s law. Maximum Moment and Stress Distribution
Beam Bending Stresses and Shear Stress Notation: A = name for area A web = area of the web of a wide flange section b = width of a rectangle = total width of material at a horizontal section c = largest distance from the neutral axis to the top or bottom edge of a beam d = calculus symbol for differentiation = depth of a wide flange section d y
1 Vertical Stress in a Soil Mass Forces that Increase Vertical Stress in Soil Mass Weight of soil (effective stress) Surface loads Fill large area Point loads: Hydro pole, light stand, column, etc Lines loads Rack or rail loading, strip foundation Rectangular area Raft or rectangular footing Circular area tank Earth embankment Road, railway, fill, ice, etc.
C/P = Load ratio C = basic dynamic load rating, kN P = equivalent dynamic bearing load, kN Basic bearing grease selection With additional information like speed, temperature, and load conditions, LubeSelect for SKF greases is the easiest way to select the right grease.
Impact Load Factors for Static Analysis Often a designer has a mass, with a known velocity, hitting an object and thereby causing a suddenly applied impact load. Rather than conduct a dynamic analysis an amplified static analysis is used, at least for the preliminary design. In a static stress analysis the static force (or weight of the mass) must
•The magnitude of the concentrated load is equal to the total load or the area under the curve. F 18.0 kN •The line of action of the concentrated load passes through the centroid of the area under the curve. 18 kN 63 kN m X X 3.5 m
load 10 kN/m 1 m 3 m 2 m F kN m m F b h kN r r 30 * 10 * 3. Geometry Method •The location of the resultant force is at the center of mass of the distributed load. 10 kN/m 1 m 3 m 2 m x m x x b m m 2 .5 * 3 2 1 1 2 1 0 2.5 m
The intensity of the load varies linearly from 50 kN/m at support A to 30 kN/m at support B. Calculate the shear force V and bending moment M at the midpoint of the beam. A B 50 kN/m 30 kN/m 3 m. Solution 4.3-12 Beam with trapezoidal load 266 CHAPTER 4 Shear Forces and Bending Moments Reactions R A 65kN R B 55kN R A R B 1 2 (50 30 kN m)(3
N-m, kN-m) MPa megaPascals (106 Pa or 1 N/mm2) n number of truss joints, nails or bolts n.a. neutral axis (axis connecting beam cross-section centroids) N Newtons (kg-m/sec2); bearing-type connection with bolt threads included in shear plane O point of origin p pitch of nail spacing (in, ft, mm, m) P force, concentrated (point) load (lb, kip, N ...
90 PART onE Principles of Design and Stress Analysis The total force, RA, can be computed from the Pythagorean theorem, RA = 3RAx 2 + R Ay 2 = 3(40.0)2 + (26.67)2 = 48.07 kN This force acts along the strut AC, at an angle of 33.7° above the horizontal, and it is the force that tends to shear the pin in joint A. The force at C on the strut AC is also 48.07 kN acting upward to the