Videos by Michael JACKSON Ochola PMP
The message to the attendance
1. Midas versus other softwares
2. What Midas can and cannot do f... more The message to the attendance
1. Midas versus other softwares
2. What Midas can and cannot do for now
3. Areas that Midas team should improve on the software to make it competitive
4. What it takes to model, andlyse and design using Midas
5. Etc. 3 views
Design and Construction of Ferry Landing sites on lake victoria, lake Kyoga and Lake Albert to i... more Design and Construction of Ferry Landing sites on lake victoria, lake Kyoga and Lake Albert to improve water transport in the affected areas and trades in the region. The design included concept, preliminary design, procurement of a design and build works, contract signature, issuance of commencement order, commencement of works, setting out of works, site mobilization, provision of access and drainage facilities to provide for access by equipment and dry work platforms, works execution and so on. Local contractor has been engaged and most works are being implemented by local staff. Before, all our ferry landing sites were constructed in earth Dams that was not environmentally friendly. Other works not captured are perimeter fence, waiting shades, staff houses and administration blocks, etc. The development shall provide fully fledge facility fit for use all season. My role is the Contract Manager. Supervision team includes Contract Manager, Project Engineer, Clerk of Works. 11 views
Papers by Michael JACKSON Ochola PMP
The deck slab, comprising the cantilever slab, mid-slab, and support slab, was analysed and desig... more The deck slab, comprising the cantilever slab, mid-slab, and support slab, was analysed and designed in accordance with EN 1992-2:2005 (UK NA). The slab thickness is 250 mm, with an effective depth of approximately 210 mm, and a design strip width of 1.0 m. Concrete strength is fck = 32 MPa, and reinforcement yield strength is fyk = 500 MPa. The slab is reinforced with P16 @ 100 mm (top and bottom) as main reinforcement, and P12 @ 150-100 mm as distribution reinforcement depending on slab zone. Minimum shear reinforcement is provided using 2-P12 stirrups.
Portal Frame Box Culvert, 2024
This covers modelling, loading, analysis and design of portal frame box culverts that includes to... more This covers modelling, loading, analysis and design of portal frame box culverts that includes top insitu RC Slab and RC insitu Bottom Slab.
Assessment of the behavior of steel base plate considering 100m3 elevated water tank and wind eff... more Assessment of the behavior of steel base plate considering 100m3 elevated water tank and wind effect.
Staircase response basing on support condition.
Local Content, 2024
Local Content aspect intended to uplift the standard of the local industry for a much appreciable... more Local Content aspect intended to uplift the standard of the local industry for a much appreciable execution for upcoming projects.
Effects of Environmental Loads on buildings, 2024
High Rise Building in Africa
In my practice, i have noted that most designers do not consider loa... more High Rise Building in Africa
In my practice, i have noted that most designers do not consider loads such as earthquake, wind, shrinkage, creep, temperature on buildings due to mild condition always considered. However, practice and experience have revealed that we should consider those loads. Unexplained cracks surface on the building after they have been opened to the public for use and it is difficult to remedy. OfCourse, we cannot rule out overloading.
Claim Justification, 2024
During project execution, we face numerous challenges ranging from labour shortage, materials sho... more During project execution, we face numerous challenges ranging from labour shortage, materials shortage and deficiency, poor work workmanship, delays to complete works, cost and time overruns. At the end of it all, the contractor and the client suffer from not achieving the initial goal of the project. The project manager always is in the mixed of all these. When claims are served by both parties to the contract, there is need to initiate the process of either to accept or reject. Therefore, either party to the contract should be able to prove his points to be compensated.
Modelling and Design of Buttress Wall using Midas Civil 3D Software, 2024
Buttress walls are applicable to retain fill embankment greater than 5-6m and also where we have ... more Buttress walls are applicable to retain fill embankment greater than 5-6m and also where we have limited space for accommodating normal cantilever walls with L-type footing. It is a structure that is constructed up against or juts out from a wall to support or strengthen the wall.
In the recent past the country experienced negative impact of out-of-gauge and over loaded trucks... more In the recent past the country experienced negative impact of out-of-gauge and over loaded trucks on the existing old bridge with register of fatalities. The following bridges below collapsed under the weight of over loaded truck simply because of the following;
Msc Bridge Engineering Assignment No. 1 Questions (1). Locate a small bridge near where you work/... more Msc Bridge Engineering Assignment No. 1 Questions (1). Locate a small bridge near where you work/live and find out as much information about it as you can, such as:
Design and Construction of Anchorage Zone Details of anchorage systems In prestressed concrete de... more Design and Construction of Anchorage Zone Details of anchorage systems In prestressed concrete design and construction, the term anchorage zone (or end zone) may be defined as that portion of the member within which the concentrated prestressing forces spread to a uniform stress distribution in the concrete element. The zone may or may not contain an end anchorage block. Anchorages are used to fix the ends of the tendons in post-tensioning systems. Various designs are available, depending on the system supplier, but basically, they are steel blocks through which single or multiple strands pass and are anchored by wedges. The strands may be tensioned individually or as a group (Anchorages for post-tensioning (concrete.org.uk). The anchorages are cast into the concrete and transfer the entire load from the strands into the concrete. This causes high local bursting forces. To prevent the concrete splitting additional reinforcement is required close to the anchorage (Anchorages for post-tensioning (concrete.org.uk). Where high tensile strength bars used for prestressing, the bars are threaded (either just at the ends or over their whole length) and anchored after tensioning by means of nuts that bear against steel plates set in the concrete. Again addition reinforcement is needed to prevent bursting of the concrete (Anchorages for post-tensioning (concrete.org.uk).
Design and Construction of Anchorage Zone Details of anchorage systems In prestressed concrete de... more Design and Construction of Anchorage Zone Details of anchorage systems In prestressed concrete design and construction, the term anchorage zone (or end zone) may be defined as that portion of the member within which the concentrated prestressing forces spread to a uniform stress distribution in the concrete element. The zone may or may not contain an end anchorage block. Anchorages are used to fix the ends of the tendons in post-tensioning systems. Various designs are available, depending on the system supplier, but basically, they are steel blocks through which single or multiple strands pass and are anchored by wedges. The strands may be tensioned individually or as a group (Anchorages for post-tensioning (concrete.org.uk). The anchorages are cast into the concrete and transfer the entire load from the strands into the concrete. This causes high local bursting forces. To prevent the concrete splitting additional reinforcement is required close to the anchorage (Anchorages for post-tensioning (concrete.org.uk). Where high tensile strength bars used for prestressing, the bars are threaded (either just at the ends or over their whole length) and anchored after tensioning by means of nuts that bear against steel plates set in the concrete. Again addition reinforcement is needed to prevent bursting of the concrete (Anchorages for post-tensioning (concrete.org.uk).
The above sectios demonstrate the different sections at midspan of the box girder, the end detail... more The above sectios demonstrate the different sections at midspan of the box girder, the end detail of the box girder having thicker dimension and blocked by end diaphragms improving on their shear capacities and the tapering section shows transision between end and mid girder sections. Construction Stage 1 Simply Support Span girders with no wet joints Actual maximum stress = 11.28Mpa Permissible tensile stress at Construction stage= 1.00Mpa (BS5400) and, Permissible compressive stress = 0.4fck=16.0Mpa Construction Stage 2 Semicontinous Box Girders with Wet joints cast and harden Semi-continous PCC PSC Box Girders at service stage Actual maximum stress = 11.22Mpa Permissible tensile stress at this stage= 0.36*sqrt(fck) = 2.3Mpa Permissible compressive stress = 0.6fck= 24.0Mpa Actual maximum Compressive stress = 12.40Mpa and tensile = 2.73Mpa Permissible tensile stress at this stage= 0.36*sqrt(fck) = 2.3Mpa Permissible compressive stress = 0.6fck= 24.0Mpa
DESIGN INFORMATION FOR KISEGE BRIDGE IN WESTERN UGANDA NO DESCRIPTION 1 Design of 20m long single... more DESIGN INFORMATION FOR KISEGE BRIDGE IN WESTERN UGANDA NO DESCRIPTION 1 Design of 20m long single span steel concrete composite bridge. 2 Bridge is designed for 100 year design life. 3 Deck system is supported on elastomeric bearings assumed to be from Freyssinet. 4 The bridge is located in Western Uganda far from Sea and the bridge is not located near any industries or factories that will affect its durability. 5 The air temperature is assumed to be 33 degrees Celsius and minimum temperature was 13 degrees Celsius. 6 Traffic volume on the road through the bridge is low and it is less than 100 veh/d. 7 The river has never flooded and broken the banks at bridge location. But it has mobile banks. 8 The bridge was designed based on assumption that only normal traffic as per Uganda Standard, East African Community axle load limit and Eurocode will use the bridge. 9 Peak Ground Acceleration assumed was 0.1g due to the location of the bridge in the active seismic zone of western Uganda. 10 Available data from previous study by the consultant was used in the design of the bridge. They included; (a).Geotechnical investigation report, (b). Hydrological/Hydraulic report and (c). Topographical reports 11 No snow load and any snow effects have been considered in the design because there is no snow in Africa/Uganda. 12 Software mainly used for the analysis of the bridge deck and designing the abutment was Prokon Structural Analysis and Design Software. 13 Spreadsheets from Davids Childs were also used in the design of the deck slabs and crack control checks. 14 Load generation/calculation was based on hand calculation which was later fed into the software for analysis and final design output. 15 No creep was considered in the design of the deck and abutments. 16 Grade of concrete used was 40 mpa for deck concrete and class 30 mpa for substructure system. 18 Maximum aggregate size assumed in the design was 20mm. 19 Concrete cover for substructure system is considered as 50mm and that of the deck slab is 35mm. These are all obtained from the referenced code of practice. 20 Grade of steel girder used is 355 mpa and that of rebars is 460 mpa. 21 Girder fabrication and connection handling will be done in the factory and only site bolting activity is considered. 22 Deck was designed based on assumption that no propping is required at construction stage. 23 Grade of bolts used is 10.9 HSFG bolts 24 Grade of Cover plates for Flange and Web connection is 355 mpa. 25 Eurocode Norm of practice has been used in this project. BS5400 for loading and bearing has also been referenced. 26 Creep was not considered in this design 27 Wind was not considered as the river is at low level and does not experience much wind
Ground beams are used for controlling differential settlements under columns and also it serves t... more Ground beams are used for controlling differential settlements under columns and also it serves to minimize excessive differential settlement due to an earthquake effect. However, beams connecting pad footings are called Strap beams Strap beams are used to connect eccentrically loaded outer or external columns as seen below.
Advise to Student on use of Strap Beams, 2022
Our City, Kampala is now full of old existing building and make it difficult to construct a new h... more Our City, Kampala is now full of old existing building and make it difficult to construct a new high rise building next to them. However, earlier researchers have discovered that use of strap beams could be the one of the many solutions to realize the dream to constructing building close to each others. Eccentrically external columns are combined to the next or center columns by use of strap beam for proper distribution of applied loads and limit settlements within acceptable value as guided by the codes and manuals.
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Videos by Michael JACKSON Ochola PMP
1. Midas versus other softwares
2. What Midas can and cannot do for now
3. Areas that Midas team should improve on the software to make it competitive
4. What it takes to model, andlyse and design using Midas
5. Etc.
Papers by Michael JACKSON Ochola PMP
In my practice, i have noted that most designers do not consider loads such as earthquake, wind, shrinkage, creep, temperature on buildings due to mild condition always considered. However, practice and experience have revealed that we should consider those loads. Unexplained cracks surface on the building after they have been opened to the public for use and it is difficult to remedy. OfCourse, we cannot rule out overloading.