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7 votes
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Why use two tower cranes on one construction site?

Tower cranes are a very significant cost on any construction site, and so builders will usually only use as many cranes as is necessary. I work for a construction scheduling company, and the one of ...
Noobie's user avatar
  • 176
7 votes
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How they put heavy cranes on top of the building?

Quite simple, lift it up there with another crane that is more expensive once it's up there the expensive crane is sent away and they can use the "cheap" crane for construction. Afterwards the ...
Mech_Engineer's user avatar
5 votes

Tower crane with a cabin on ground level

The crane operator at the top of the tower doesn't just have a view of the load being lifted. He/she can see the entire surrounding area and take account of any potential hazardous situations that ...
alephzero's user avatar
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5 votes

Why did they build a sarcophagus over Chernobyl instead of pouring concrete over the building?

The likely reason is that simply pouring concrete over it would not have contained it. The site is smoldering and emits gases of various types. It also has voids and shifts around, various areas ...
Wallace Park's user avatar
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4 votes

Why did they build a sarcophagus over Chernobyl instead of pouring concrete over the building?

The original sarcophagus built around 1986 has some issues and it was estimated in 1988 that it would only last 20-30 years (here we are). Check out this link that explains some of the main issues ...
willpower2727's user avatar
4 votes

How to construct a very large circular wall made of concrete?

You can build this wall as you would any other. Given its size, the fact that it's a ring becomes irrelevant, which means that for all intents and purposes, it can be designed and constructed with the ...
Wasabi's user avatar
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3 votes
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How are these bricks being supported?

This was intended more a comment regarding the third image, (however I opted to put a The confusing part for me is, the arch like section in the middle, and the differences between the style of the ...
NMech's user avatar
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3 votes
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Construction Entity and Construction Complex

I am a native English speaker and practising civil engineer who had never heard of ISO 12006-2 until this question, and if you had talked about "Construction Entities" I wouldn't have had a clue what ...
AndyT's user avatar
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3 votes

Tower crane with a cabin on ground level

It is not trivial to replace human vision with a camera in this sort of situation. it is difficult to reproduce good depth perception with cameras the human eye can change focus quickly and ...
Chris Johns's user avatar
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2 votes

Tower crane with a cabin on ground level

From 1924 to 1932 Sydney Harbour Bridge was constructed. It used two creeper cranes on both sides of the arch during construction to hoist people & materials. The crane operators couldn't see ...
Fred's user avatar
  • 9,687
2 votes

If gypsum has been added into clinker during the production of cement,is curing process still needed to be carried out?

This a bit late but I will add to the answers already given, with some additional technical and historical perspective. Portland cement contains four Bogues compounds - C3A, C2S, C3S and C4AF. Of ...
AsymLabs's user avatar
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2 votes

Slack time in critical path method

The critical path is: "the longest path of planned activities [...] to the end of the project" Wikipedia In what I would call "purely theoretical" Critical Path Analysis, the length of the ...
AndyT's user avatar
  • 3,143
2 votes

Why use two tower cranes on one construction site?

I'd say it's most likely a time saving operation. I'm sure a project manager looked at the situation and decided it was beneficial to the schedule and productivity to have a second crane operating ...
JMac's user avatar
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2 votes
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Relationship between Material cost and Labor cost

In the Philippines, there are 2 types of labor rates that we consider. We have provincial and non-provincial rates. For non-provincial rates, we can go as far as 45% material cost, while on ...
Jem Eripol's user avatar
2 votes

How are these bricks being supported?

Your first photo looks like it is a concrete structure and the bricks are only glued onto it.
anita's user avatar
  • 21
2 votes

What type of engineer/profession specialize in the design and building of residential homes/houses?

As an engineer (with partner also an engineer) who designed a 4 bed house to exceed the energy requirements of the building regs, and by a huge amount that some new builds are just beginning to match ...
Solar Mike's user avatar
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2 votes
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What type of engineer/profession specialize in the design and building of residential homes/houses?

A house or a development is the result of coordination between the architect and the civil engineer. But let's make no mistakes, civil engineering (the main study of the civil engineers) umbrellas ...
r13's user avatar
  • 8,184
2 votes

Standard vs code

Standards are experts common sense thoughts on the minimum safe ways to design, build and operate something. Standards are designed for voluntary use and do not impose any regulations. However, laws ...
StainlessSteelRat's user avatar
2 votes
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How deep do you have to check for problems underneath a building site?

Local governing agencies have the general geology information of the sites. And building departments usually recommend what kind if soils investigation and how many bores and how deep. If the soil ...
kamran's user avatar
  • 22.4k
2 votes

Why doesn't the counterweight on a tower crane move back and forth to maintain stability?

There are some cranes that Counterweight moves on a buggy, not apparently in your case! In this crane part of the stability of countering the load comes from the crane's vertical shaft which is ...
kamran's user avatar
  • 22.4k
2 votes

Is there a wireless alternative of a Plumb Bob?

Yes, the laser level. Some have lenses to do points of light, sheets etc so floors can be checked for level by showing high points etc One I borrowed allowed me to put a line across the floor, ceiling ...
Solar Mike's user avatar
  • 15.8k
2 votes

Making shipping containers with wood instead of steel, is my calculation sound and valid?

Thing is shipping containers are, generally cheap due to multiple reuse. Used ones are frequently sold at prices that don't even cover the material cost if I were to build my own. Metal is easy to ...
joojaa's user avatar
  • 3,577
1 vote

Sheathing carrying vertical load more than studs

A good carpenter would cut all the studs by a table saw or miter saw correctly. Type 5 (light wood frame) construction, has built-in measures to deal with these potential imperfections. eg, 4 by post ...
kamran's user avatar
  • 22.4k
1 vote
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Sheathing carrying vertical load more than studs

It depends on the primary function of the stud that is floating. Two results are expected: Immediately damages the sheathing by tearing if it has a joist or another loaded stud directly over, or even ...
r13's user avatar
  • 8,184
1 vote

How are these bricks being supported?

These are veneered brickwork used over either concrete or steel structure with proper dowels or fasteners supporting the bricks. These fasteners are regulated by code to support both vertical loads ...
kamran's user avatar
  • 22.4k
1 vote

Gypsum board damages(fire rated)

Officially Gypsum panels should be stored inside where they are not exposed to inclement weather, the Gypsum Association states "Gypsum panel products shall not be stored in areas of excessive ...
loogle1's user avatar
  • 170
1 vote

Standard vs code

Code, as it relates to construction, is used mainly as guidelines in cases where there is an obligation to design and build structures or part of them in a certain way. ASCE is just a part of the code....
kamran's user avatar
  • 22.4k
1 vote

How deep do you have to check for problems underneath a building site?

Practically, the geologist will do boring at different location at the site, we call it Bore Hole. Based on their preliminary assessment, they will decide the depth of boring. Or by experience or ...
Disrudog's user avatar
1 vote
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What is Design Element in the context of asset management

Wikipedia explains the term "Design Element" quite well. I don't expect there is a formal "official definition" of the term Design Element, but the relevance to BIM (Building Information Modelling) ...
alephzero's user avatar
  • 12.5k
1 vote

Where to start when studying Architectural Engineering by myself?

I would suggest that you take a look at Architectural Engineering Professional Societies in your local area. Most of these societies have recommended educational curriculum and continues educational ...
DiaperHands's user avatar

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