This tag should be used for questions regarding work, material and equipment schedules, cash flow and cost analysis in projects, critical path methods, and other subjects regarding the flow of work, time, and money in construction. This is similar to project management.
Questions tagged [construction-management]
39 questions
8
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2 answers
What is the justification for working on such large stretches of road?
I live and work in the UK, a country known for relentless roadworks.
Last week I drove through roadworks on the M1 that lasted for 18 miles, necessitating road users driving at 50 mph. Of course, almost all of this impressive stretch was simply…
Phil
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6
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1 answer
Bulk Volume vs. Solid Volume
If I pour a sample of aggregate into a container full of water and measure the displacement of the water due to the sample, does this give me Bulk Volume or Solid Volume?
And what is the difference?
user3507
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5
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1 answer
Tower crane with lift (elevator)
Near my apartment is a building site with a tower crane; great fun to watch of course. This crane seems to have a lift / elevator / vertical-people-transporter (arrowed in the picture).
As far as I can see the lift is only used four times a day…
NL_Derek
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5
votes
2 answers
How they put heavy cranes on top of the building?
I saw crane on very tall building. How do they put such heavy item on such high building?
The Hawk
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5
votes
2 answers
Why use two tower cranes on one construction site?
I am fascinated by construction. My university is building a new facility, and they are using 2 tower cranes in the construction.
Why would a contractor choose to use 2 cranes on one construction project? Is it simply a matter of saving time by…
waterloo
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3
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1 answer
Waste Foundry Sand as an aggregate for concrete mixes. I have a question regarding grain diameter and it's possible applications
I'm working on a project with a company that uses sand casts during moulding processes and they provided us with samples of the sand they use before it's involved in the procedure and afterwards (Waste foundry sand). I'm wondering if there's…
Jorge Cabezut
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3
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How many Technical Rescue: Collapse Units are there in the US?
In a story about today's Miami bridge collapse, I saw this photo:
In the upper left, there is a white box truck which seems to say "MIAMI DADE FIRE RESCUE / TECHNICAL RESCUE / COLLAPSE UNIT," even though the start of each line is obscured by a…
WBT
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3
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Relationship between Material cost and Labor cost
I am currently into an estimating job for a small construction company. In my previous experiences, in calculating the labor cost for a certain job,
Labor cost = material cost * 0.45
I did this to simplify the computation. Are there any other…
Peace on Earth
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3
votes
1 answer
Where to start when studying Architectural Engineering by myself?
I have this idea of creating my own curriculum for studying Architectural Engineering. I aim at talking with actual architectural engineers in my surroundings and ask them for advice on the topics I should study and help me with advancing.
By…
Lesley
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3
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3 answers
Tower crane with a cabin on ground level
Pardon me for kind of a stupid question, but I keep wondering. Traditionally, tower cranes' cabins are located at the top of the tower. I can understand why it have been necessary up to ~1990s, when it was the only way for a human to get reliable…
GreyCat
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Why doesn't the counterweight on a tower crane move back and forth to maintain stability?
So I'm watching the tower cranes at a construction site nearby everyday: They seem so tall and unstable that my naïve assumption would be that the counterweight would move back and forth to maintain balance as the load moves back and forth along the…
SurpriseDog
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2
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What degree of open span/narrow support can rigid PIR thermal insulating foam sustain under the short term load of setting concrete?
I've found data related to the deformation and shear performance of typical PIR (polyisocyanurate) foams such as Celotex/Kingspan, but I'm not sure how to use these figures in my own situation.
I am refitting a solid floor building in the UK. The…
Stilez
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Construction Entity and Construction Complex
I attend to engineering design of a new irrigation system, comprising 4 pump stations and 3 lengthy water mains between them.
Definitions by ISO 12006-2:
Construction Entity is an independent construction result of significant scale serving at least…
Igor Averbukh
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2
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Deflection of Acrylic Shelf
I am installing an acrylic shelf, 75-1/4" L x 10" W x 1-1/2" deep.
It is fixed to the wall at the short ends. Should I be worried about deflection in the center of the shelf when weight is added? Is there anything I can do to calculate this?
R. Smith
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2
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If gypsum has been added into clinker during the production of cement,is curing process still needed to be carried out?
Gypsum is used to prevent immediate stiffen and reduce heat loss of cement. If gypsum has already been added into cement,do we still need to undergo curing process after that?
Wendy lly
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