A typical 2x6 stud wall is used for a bearing wall with 2x6 at
16” o.c. Determine the allowable wall load (in lb/ft) for a wall
height of L = 10 ft. Assume No.2 SPF, D+L governs, internal
exposure with climate control, pin-pin connections, MC<19%,
T<100°F. The wall is braced against weak axis buckling at
mid-height.
Assume member length of L=4ft
In: Civil Engineering
what is the difference between human exposure to hazardous chemicals in small amounts and their exposure to microbes?
In: Civil Engineering
In: Civil Engineering
Briefly describe two biochemical transformations that occur in biological unit processes to remove colloidal or dissolved organic matter
In: Civil Engineering
Plot the head loss in a 500 m long 200 mm cast iron pipe for the following flow rates; 0.001, 0.01, 0.1, and 1 m3/s. Use (a) the Moody Diagram and (b) the Swamee-Jain equation to find the friction factor and (c) the Hazen-Williams Eq. Discuss why the losses are similar or different for parts a and c
In: Civil Engineering
briefly explain the factors affecting permeability
In: Civil Engineering
Select the lightest W10 section. Using Fy=50ksi and Fu= 65ksi to select trial sizes and check for Gross Section Yielding and Tensile Rupture. Assume the member is to have two lines of bolts in each flange. (use ASD method)
Pd - dead load = 225 ksi
Pl - live load = 150 ksi
L - member length = 28 ft
Bolt diameter = 7/8 in
Select the lightest W12 not W10.
In: Civil Engineering
Using LRFD, select a 30-ft-long W section of A992 steel with a nominal depth of 10 in (a W12) to support a tensile service dead load PD=130kand a tensile service live load PL=110k. In addition, the section is to comply with the slenderness ratio limit from AISC D1 to prevent sag of the member. As shown in the figure below, the member is to have two lines of bolts in each flange for 7/8-in bolts (at least three in a line 4-in on center).
In: Civil Engineering
Q No# 8
How is the maximum basic floor area of a building determined?
Q No# 11
How are the exterior wall fire-resistance rating requirements determined for buildings that are on the same lot?
Q No# 15
How are the required fire-resistance ratings of specific building elements determined?
Q No# 16
How do the two different categories of Type I construction differ in fire protection?
Q No# 17
Which characteristics are typical of a Group I occupancy?
Q No# 18
What do storage occupancy classifications have in common with those of manufacturing uses?
Q No# 19
Which occupancy groups are eligible for unlimited floor area in a one-story nonsprinklered building?
Q No# 20
Describe the difference between a through penetration and a membrane penetration.
In: Civil Engineering
Problem 1
The volume at a section of a 2 lane highway is 2000vph in each direction and the density is 50 vehicles per mile. A truck joins the traffic stream and travels a length of 5 miles at 20 mph before exiting the highway. The vehicles behind the truck produce a density of 110 vehicles/ mile and the flow rate is 1000 vph. How many vehicles are behind the truck before it leaves the highway.
Problem 2
Using Greenberg model of traffic flow theory:
us = c ln(kj /k)
Show that c = uo
Problem 3
Based on an entry-exit record in a gated parking lot, 275 cars parked during a typical day between 9 am and 6 pm. Of these cars 10% were parked for 1 hour, 35% for 2 hours, 25% for three hours and the remaining for 4 hours. About 15% of the bays are vacant on an average throughout the day. If the efficiency factor is 80 %, what is the space-hour demand and the number of parking spaces in the lot
In: Civil Engineering
A monolithic reinforced concrete floor is to be composed of rectangular bays measuring 6 m x 7.5 m. The floor is to designed to carry a service live load of 5 KPa, floor finish of 1.5 KPa, and ceiling load of 1 KPa, in addition to its own weight. Design the corner floor panel slab using fc’=21 MPa, fy = 400 MPa, and concrete unit weight of 23.54 KN/m3.
In: Civil Engineering
plate boundaries can be divided into divergent boundary convergent boundary transform faults explain the continent undergoes extension for divergent boundary
In: Civil Engineering
QUESTION 2
(a) In your opinion, what are the contributing factors for the generation of leachate in a landfill sites. [6 marks]
(b) Properties of solid wastes are important to determine, develop and design proper integrated solid waste management system. List FOUR physical properties of solid wastes. [4 marks]
subject: enviromental engineering
In: Civil Engineering
In: Civil Engineering
3. Please provide a case study about a construction project having serious problems because of excessive amounts of settlement due to consolidation (14 points). ***Note: Ten (10) bonus points will be given to those who can include a supporting article found for a case study. (A TITLE TO AN ARTICLE THAT COVERS THIS WOULD BE PERFECT! AND MORE THAN ENOUGH)
In: Civil Engineering