Construction Management, 5th Edition
5th Edition
ISBN: 9781119425731
Author: Daniel W. Halpin
Publisher: WILEY
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Chapter 4, Problem 4RQE
To determine
List two types of negotiated contract and explain the payment method and incentive concept.
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Two plates are welded as shown. The plates are 15mm thick and 400mm wide.Fu=550MPa. Assume that the max size of weld is 1.8mm less than the thickness of plate allowable shear stress 0.3Fu.
1. Find the maximum size of fillet weld.a. 8.8mmb. 9.3mmc. 12.4mmd. 13.2mm
2. Compute the effective area of welda. 5261mmb. 7467mm?c. 7014mm?d. 4978 mm?
3. Find the safe value of P in kNa. 1232.06kNb. 821.37kN c. 1157.31kN d. 868.07kN
How to determine horizontal displacement of a frame
H.W: Evaluate the integral:
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- For the beam below, select stirrup spacings for #3 stirrups if f = 4,000 psi, normal weight concrete and f, = 60,000 psi. P₁ = 30 k @L OL = 3 k/ft WD 2 k/ft (including beam weight) ///////////// 10 ft- -20 ft- -30 ft- 18 in. 24 in.arrow_forwardG-1 The drawing shows the beam (B) and girder (G) layout for the third floor of a commercial building. The live load (LL) for the flow is 45 PSF and the dead load (DL), which consists of a 4" thick concrete slab weighs 50 PSF. For now, we will neglect the weight of the beams/girders. 24 ft 6 ft 6 ft 6 ft 6 ft 6 ft G-2 C6 30 ft G-3 24 ft B-1 B-2 B-3 B-4 B-5 B-6 G-4 Compute the distributed loads applied on girder G-2. Show a FBD of these loads and compute the reactions at columns C2 and C6.arrow_forwardable to help me with the question below with references too for study purpose Structural InvestigationThe Building Maintenance and Strata Management Act 2004 interprets “Structural elements,for a building means an internal or external load-bearing component of the building or part ofthe building that is essential to the stability of the building but exclude any door or window.”Loading-bearing components such as wall, column or beam, etc, are subjected to externalforces. (a) Interpret the diagnosis of a structural defect and discuss FOUR (4) external forces ona structure element that may cause structural cracks.(b) Discuss the effects of alkali-silica reaction on concrete structures and formulateFOUR (4) preventive measures.(c) Discuss the differences between chloride attack and sulphate attack on concretestructures(d) Formulate preventive measures to prevent or reduce chloride and sulphate attack onconcrete structures Hard FinishesNatural timber flooring such as timber strips and…arrow_forward
- For the gravity concrete dam shown in the figure, (the vertical stresses at toe and heel ((Pmax & Pmin) are and 52 ton/m respectively. following data are available:- -Unit weight of concrete (yconc)-2.4 ton/m³ Solve on paper -Neglect Wave pressure, silt pressure, ice force and earth quake force. #=0.65 Find factor of safety against sliding and overturning (F.Sslid & F.Sover) Azo 115 m 120 marrow_forwardFor the gravity concrete dam shown in the figure, (the vertical stresses at toe and heel ((Pmax & Pmin) are and 52 ton/m respectively. following data are available :- -Unit weight of concrete (yconc) 2.4 ton/m³ -Neglect Wave pressure, silt pressure, ice force and earth quake force. #=0.65 Find factor of safety against sliding and overturning (F.Sslid & F.Sover) A36 115 m m 120 marrow_forwardA horizontal cantilever of effective length 3a, carries two concentrated loads W at a distance a from the fixed end and W' at a distance a from the free end. Obtain a formula for the maximum deflection due to this loading using Mohr's method. If the cantilever is 250 mm by 150mm steel I beam, 3 m long having a second moment of area I as 8500 cm4, determine W and W'to give a maximum deflection of 6 mm when the maximum stress due to bending is 90 Mpa. Take Young's modulus of material E as 185 Gpa.arrow_forward
- For the gravity concrete dam shown in the figure, (the vertical stresses at toe and heel ((Pmax & Pmin) are and 52 ton/m respectively. following data are available :- -Unit weight of concrete (yconc) 2.4 ton/m² -Neglect Wave pressure, silt pressure, ice force and earth quake force. #=0.65 Find factor of safety against sliding and overturning (F.Sslid & F.Sover) AS 115 m Sm 120 marrow_forwardMust be handwrittenShow your complete solution with proper working equations.Express intermediate answers to at least four (4) decimal places and round final answers to two (2) decimal places. Enclose and summarize your final answers in a boxarrow_forward: For the gravity concrete dam shown in the figure, the following data are available: The factor of safety against sliding (F.S sliding)=1.2 Unit weight of concrete (Yconc)=24 KN/m³ - Neglect( Wave pressure, silt pressure, ice force and earth quake force) μ=0.65, (Ywater) = 9.81 KN/m³ Find factor of safety against overturning (F.S overturning) 6m3 80m Smarrow_forward
- Aum AA waste incinerator stack emits 27,027 kg/yr of cadmium and has an effective stack might of 100 m. The wind speed is 5 m/s at an anemometer located at 10 m. It is a clear sunny day with the sun nearly overhead (Class B conditions). a. Calculate the ground-level cadmium concentration (in ug/m³) at a distance of 2 km directly downwind? [Refer to tables in the textbook to help with this problem] What is the concentration of cadmium (in µg/m³) inside of a house at the location in part (a) after two hours? Note that the initial concentration of cadmium in the house was zero, there are 0.25 air changes per hour (ach), there is no source of cadmium inside the house, and cadmium is considered a conservative pollutant.arrow_forwardMust be handwrittenShow your complete solution with proper working equations.Express intermediate answers to at least four (4) decimal places and round final answers to two (2) decimal places. Enclose and summarize your final answers in a boxarrow_forwardFor the frame shown below, determine the vertical displacement at C. Assume that flexural rigidities AB and BC segments are EI and 2EI, respectively. Use the method of virtual work and show all working.arrow_forward
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