A continuous and aligned fibrous reinforced composite having a cross-sectional area of 875
mm² is subjected to an external tensile load. If the stresses sustained by the fiber and matrix
phases are 255 MPa and 8.35 MPa, respectively, the force sustained by the fiber phase is 85,800
N, and the total longitudinal composite strain is 1.65 x 10^-3, determine the following:

(a) Volume fraction of fiber and matrix
(b) The force sustained by the matrix phase
(c) The modulus of elasticity of the composite material in the longitudinal direction
(d) The moduli of elasticity for fiber and matrix phases

How is soil investigation important in civil engineering and give examples.

2. Given a 28-acre watershed with the following land use mix: 8 acres of SFR (38% impervious) on HSG-B soils, 5 acres of SFR (30% impervious) on HSG-C soils, and 15 acres of open space (park and playground) in fair condition on HSG-C soils. Watershed time of concentration is 21 minutes. The design return period 24-hour rainfall depth is 5.25 inches.

1. The runoff-weighted average curve number (CN) =                             
2. The area-weighted unit hydrograph peak rate factor (PRF) =                                                                 

c)    The runoff volume from a rainfall of 3.25 inches (watershed inches) =                             

d)   The runoff volume from a rainfall of 0.47 inches (watershed inches) =

Answer only if you can draw perfect drawings
Don't attempt if u don't know the answer
Don't send random answers... Only attempt if u know all the four answers perfectly.... Otherwias I will downvote

1) give the planning for 2bhk in autocad and design the model in staad
2)Show the drawing of any industrial truss with perfect drawings
3)write about magnetic water concrete and its hydration
4)give the reference drawings of circular and. Combined footing

For the following, compute and tabulate R or D, T, L, LC, E, M, PC, PT, deflection angles, and incremental chords to lay out he circular curves at full stations (100’). Develop and tabulate the curve data, deflection angles, and incremental chords needed to lay out the circular curves at full- station increments using a total station instrument set up at the PC. (Essentially, develop a table similar to Table 24.2.)

1. Highway curve with R = 1200’, I = 30o00’, and PI station = 45 + 50.00’ 2. Highway curve with T = 131.65’, R = 1200’, and PI station = 67 + 50.00’ 3. Highway curve with R = 900 m, I = 12o30’, and PI station = 4+200.600 m 4. Highway curve with R = 550 m, I = 5o00’, and PI station = 3 + 290.600 m

Design a baseplate for a W24 x 192 column carrying an axial load of P_u = 2000k and bearing on a 8′ x 8′ concrete footing with f′_c = 3ksi (not in mm show work steps by step )

If a beam is loaded in pure bending, where would you expect the maximum compressive and tensile stresses to occur

5. In Table Z-1 of the list of air contaminants regulated in 29 CFR 1910.1000 (General Industry standard), what is the 8-hour Permissible Exposure Limit (PEL) in parts per million (ppm) for a worker exposed to acetone on a production line:

What is the overall efficiency for the removal with the fabric filter for a distribution of particles where 0.05% of the particles are of 0.1 microns diameter, 0.2% of particles are of 0.3 microns diameter, 2.8% of the particles are 0.7 microns and remaining particles are in the particle diameter range of 1 to 50 microns.

Suggestions please.

Land use and transport infrastructure relationship: what method(s) and factors (variables) to be considered when measuring accessibility of activities (education, hospital, shopping mall, employmeny, etc) in regional (suburb) and urban areas using transport network (railway).

Determine the saturation flow rate for a left-turn lane that operates in a protected/permitted mode, under the following conditions: Opposing demand flow rate = 1100 veh/h Lane width = 11 ft Heavy vehicles = 3% of the traffic stream Approach grade = –2% No on-street parking No bus stops Bicycle and pedestrian traffic conflicting with this lane group is negligible Intersection is not in a central business district.

Problem 2:
Initial mixture proportions for a concrete with the following requirements and properties is needed:
28 Day Design Strength = 4000 psi
It is for a parking lot deck and columns, so it is not in contact with sulfates from soil or saltwater
Slump should be 4”
Aggregate properties are:
Coarse Fine
SGSSD 2.60 2.55
Absorption (%) 0.8% 1.9%
Fineness Modulus N/A 2.90
Nominal Size ¾” x #8 N/A
Dry Rodded Unit Weight (lbs/ft3) 91.3 N/A
Description Rounded Gravel N/A
No reliable records for the relationship between w/c and compressive strength are available for the
specific cement and aggregate combination being used, so use Table 12-3 or Figure 12-3 for the
relationship between compressive strength and w/c.
Not using any chemical admixtures other than air-entrainment, determine the mixture proportions (per yd3
of concrete with aggregates in the SSD state if the freeze/thaw exposure classification is
a) Class F0 (not exposed to freezing and thawing, but use a minimal amount to improve workability
or just in case it is exposed to frost once in awhile…for example San Luis Obispo)
b) Class F3 (exposed to freezing and thawing while wet and exposed to de-icing chemicals…typical
of a parking structure in New York, Minnesota, Illinois, Indiana, Massachusetts, etc.)
c) Compare your proportions for the two, and what governed the w/c?

A rectangular footing (0.75m∙0.75m), embedded 0.5 m, carries a downward column load of 200 kN. The footing is supported on an overconsolidated clay with the following properties:

Cr = 0.05         e = 0.7             OCR = 2.0

PI = 55            cu = 200 kPa ϒsat = 16.2 kN/m3

The ground water table is at a depth of 1.0 m below the ground surface.

a) Calculate the primary consolidation settlement for this footing.

b) Is the calculated Sc within tolerable limits?

Hint: This clay deposit is very deep. Assume that the portion (or thickness) of the clay layer that will consolidate is between z = Df and z = Df + 2B.