Given,
D = 30 psf
Lr or S or R = 25 psf
W = 36 psf
U = 1.4D = 1.4 * 30 = 42 psf
U = 1.2D + 1.6L + 0.5(Lr or S or R) = 1.2 (30) + 1.6 (0) + 0.5 (25) = 48.5 psf
U = 1.2D + 1.6(Lr or S or R) + (1.0L or 0.5W) = 1.2 (30) + 1.6
(25) + 0.5 (36) = 58 psf or 94
psf
U = 1.2D + 1.0W + 1.0L + 0.5(Lr or S or R) = 1.2 (30) + 1.0
(36) + 0.5 (25) =
12.5 psf or 84.5 psf
U = 1.2D + 1.0E + 1.0L + 0.2S = 1.2 (30) + 0 + 0 + 0.2 (25) = 41 psf
steel design 1. (20 points) A roof system with 16 x 40)sections spaced 10 ft on...
Following loads act on a roof. What is the design roof load as per LRFD design method? Dead load (D) = 200 psf Roof live load (L.) = 40 psf Rain load(R) = 20 psf Snow load (S) = 45 psf Wind load (W) = -32 psf (uplift) 312.5 psf 334.4 psf 256.7 psf 211.3 psf
The interior floor system shown in the figure has W24 x 55 sections spaced 8 ft. 6 in. = _ on center and is supporting a floor dead load of 50 + 2 psf. = -- and a live floor load of 80 + 2 psf. = . Determine the governing load in lb./ft. that each beam must support. (If your PID is “5684659”, then A = 5, B = 6, C = 8, D = 4, E = 6,...
The truss shown in Fig. 04 supports a roof dead load of 40 psf and a roof live load of 100 ps Douglas Fr-Larch. Truss joints are assumed to be connected with -in fasteners. Using LRFD method, verify if 2 x 6 dimensional sawn lumber is adequate to sustain the tension in the bottom chord AC, using f. Trusses are spaced at 3ft o.c. and are made from No. 2 LRFD. CM-I , Ct s), Ci-l , ф-0.8,A-08, KP 2.7,...
I don’t want the answers just a plan on how to solve the
problem
Live Loads and Roof Live Loads Problem 1 (10 points)-A pitched roof system is comp are spaced 32 in o.c. The trusses have a 5:12 pitch. Determine the roof live load (w, i (a) an interior truss and (b) an exterior truss (end truss, with no roof overhang). Finally, sketch FBDs (elevation view) of each truss(one interior truss; one exterior truss) showing the roof live load...
General Information (Problems 2–4) The envelope of a four-story steel building (risk category II) is shown below. Resistance to lateral loads (wind and earthquake) in the direction shown is provided by a steel braced frame on the interior of the building. The gravity load system, floor and roof diaphragms, and the lateral load system for the orthogonal direction are omitted from the figure. GRAVITY BF Roof 15 ft - - - - - - 15 ft WIND 3 15 ft...
А w18 x 40 steel spandrel (edge) beam spans 20'. The beam supports a uniform floor live load of 1 kip/ft and a uniform floor dead load of 0.5 kip/ft. The beam also supports brick veneer weighing .6 kip/ft as a uniform dead load. The maximum allowable total load deflection for beams supporting masonry (brick or block) is L/640. Calculate the live load and total load deflections. Do the live load and total load deflections exceed the allowable deflections for...
The single-story unbraced frame shown below is subjected to dead load, roof live load, and wind load Figure 1 shows the results of a first-order analysis relative to the columns of the frame. The axial load and end moment (also equal to the maximum moment in the column) are given separately for the different load cases (i.e., dead load, roof live load, and lateral wind load). All vertical loads are symmetrically placed and contribute only to the Mnt moments (i.e.,...
answer the questions based on the informations on the 3 pictures
please:
What are the essential responsibilities of a structural
designer or engineer in designing a structure?
What factors would you consider and why when planning the
design of a building structure?
You are the project team leader for the design of a single
family house in southwest Houston area. Discuss the types of
structural loads you think are important and explain
why.
d) Thermal load changes in perature cause...