Construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding.
Implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the United Arab Emirates
Structural and architectural engineering concept, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
Structural and architectural engineering concept, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
The concept of structural and architectural engineering, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
The concept of structural and architectural engineering, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
Implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations
Building under construction using modern machinery in the Kingdom of Saudi Arabia, implementation of the reconstruction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering
Implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations
Tower under construction using modern machinery in Saudi Arabia, construction works, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, silhouette of heavy machinery and equipment, cranes and high scaffolding, concept of structural and architectural engineering
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Construction work, pouring concrete and laying foundations, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, group of workers implementing the construction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, Saluit
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Civilization, development and urban progress in the Kingdom of Saudi Arabia, a group of residential buildings under construction, improving and developing the infrastructure, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, construction cranes, pouring concrete and laying foundations
The concept of structural and architectural engineering, implementation of the construction plan and formation of the metal structure, urban development and progress, construction works, pouring concrete and laying foundations, heavy machinery and equipment, a building under construction in the Kingdom of Saudi Arabia
Two cranes working on the construction of a large facility, the concept of structural and architectural engineering, the use of modern machinery in Saudi Arabia, the implementation of the reconstruction plan and the formation of the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Concept of structural and architectural engineering, construction cranes, concrete pouring and foundation laying, implementation of construction plan and metal structure formation, modern building under construction, urban expansion in the Kingdom of Saudi Arabia
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, building under construction in UAE, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure, urban development and progress
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Construction and buildings under construction, towers and skyscrapers illuminated at night, cranes, high scaffolding and heavy equipment, the concept of structural and architectural engineering, Saudi urban development and progress, construction and concrete pouring works, implementation of the construction plan and forming the metal structure
Construction site crowded with heavy machinery, equipment, cranes and high scaffolding, construction work, concrete pouring and foundation laying, building under construction in Saudi Arabia, structural and architectural engineering concept, construction plan implementation and metal structure formation
Construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding.
Heavy equipment, cranes and high scaffolding used on the project site, construction works, concrete pouring and laying the initial foundations, implementing the construction plan and forming the metal structure, Saudi Arabian Gulf workers wearing protective jacket and helmets working on a building under construction and erection
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Concept of structural and architectural engineering, group of workers implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, Saluit
Concept of structural and architectural engineering, group of workers implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, Saluit
A building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Civilization, development and urban progress in the Kingdom of Saudi Arabia, an aerial photo of a group of residential buildings under construction, improving and developing the infrastructure, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, construction cranes, pouring concrete and laying foundations
Tower under construction using modern machinery in Saudi Arabia, construction works, concrete pouring and foundation laying, implementation of construction plan and formation of metal structure, silhouette of heavy machinery and equipment, cranes and high scaffolding, concept of structural and architectural engineering, Saluit
Silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, group of workers implementing the construction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, Saluit
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Structural and architectural engineering concept, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
Construction cranes, concrete pouring and foundation laying, civilization, development and urban progress in the Kingdom of Saudi Arabia, a group of residential buildings under construction, improving and developing the infrastructure, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Saudi urban development and progress, improving and developing infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure, construction crane and pouring concrete over a modern building under construction
The concept of structural and architectural engineering, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, bottom view of a building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of the construction plan and forming the metal structure
Machinery, heavy equipment, cranes and high scaffolding, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding.
Saudi urban development and progress, improving and developing infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure, construction cranes and pouring concrete over modern buildings under construction
Residential building under construction with three cranes, Saudi urban development and progress, improving and developing infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, skyscraper under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Working on developing and improving the country, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure, construction cranes and pouring concrete, skyscrapers and towers on a site under construction in Saudi Arabia
Foggy view of Saudi Arabia skyline, illuminated windows in towers and skyscrapers, construction plan implementation, construction works, concrete pouring and foundation laying, concept of structural and architectural engineering, group of facilities under construction using heavy machinery and equipment
Silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, group of workers implementing the construction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, Saluit
Concept of structural and architectural engineering, group of workers implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, Saluit
Machinery, heavy equipment, cranes and high scaffolding, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Construction and concrete works, construction cranes working on building a new facility in Saudi Arabia, infrastructure development concept, implementation of construction plan and forming of metal structure, heavy machinery and equipment, cranes and high scaffolding
Urban expansion in Saudi Arabia, concept of structural and architectural engineering, panoramic image of modern buildings and facilities under construction, construction cranes, concrete pouring and foundation laying, implementation of construction plan and metal structure formation
The concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, construction works, pouring concrete and laying foundations, implementing the construction plan and forming the metal structure, a tower under construction using modern machinery, heavy machinery and equipment, cranes and high scaffolding
The concept of structural and architectural engineering, heavy machinery and equipment, cranes and high scaffolding, a building under construction in the Kingdom of Saudi Arabia, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations
Heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, worker implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, Salouet
Heavy machinery and equipment, cranes and high scaffolding, construction works, concrete pouring and foundation laying, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and forming of metal structure
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Building the main façade and implementing the reconstruction plan by forming the basic structure of the building, a skyscraper under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, a tower under construction using modern mechanisms
Heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, worker implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, Salouet
Tower under construction using modern machinery in Saudi Arabia, construction works, concrete pouring and foundation laying, implementation of construction plan and formation of metal structure, silhouette of heavy machinery and equipment, cranes and high scaffolding, concept of structural and architectural engineering, Saluit
Concept of structural and architectural engineering, implementation of construction plan and formation of metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, black and white image of a building under construction in the Kingdom of Saudi ArabiaConcept of structural and architectural engineering, implementation of construction plan and formation of metal structure, construction works, pouring concrete and laying
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Urban expansion in Saudi Arabia, concept of structural and architectural engineering, panoramic image of modern buildings and facilities under construction, construction cranes, concrete pouring and foundation laying, implementation of construction plan and metal structure formation
Construction work, pouring concrete and laying foundations, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Implementing the reconstruction plan and forming the metal structure, construction work, pouring concrete and laying foundations, a building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, a tower under construction using modern mechanisms
Construction work, pouring concrete and laying foundations, a building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, group of workers implementing the construction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, Saluit
A building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Concept of structural and architectural engineering, implementation of construction plan and formation of metal structure, construction crane and pouring concrete over a modern building under construction in blue, Saudi urban development and progress, improvement and development of infrastructure in the Kingdom of Saudi Arabia
Building under construction in Saudi Arabia, Heavy machinery and equipment, cranes and high scaffolding, Concept of structural and architectural engineering, Construction works, concrete pouring and foundation laying, Implementation of construction plan and formation of metal structure, Tower under construction using modern machinery
A building under construction in the Kingdom of Saudi Arabia, a construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
Implementation of construction plan and formation of metal structure, construction cranes and concrete pouring, skyscrapers and towers in a site under construction in Saudi Arabia, working on developing and improving the country, the concept of structural and architectural engineering
Supervising projects at the work site during the day, a close-up from the back of a Saudi Arabian Gulf engineer wearing a protective jacket and helmet standing at the construction headquarters, development and growth of the industrial sector in the Kingdom, Saudi engineering professions and jobs
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Improving the country's infrastructure, construction and contracting works, laying foundations, heavy machinery and equipment, cranes and bulldozers, a building under construction in Saudi Arabia, a back view of a Saudi Arabian Gulf engineer wearing a helmet and a safety vest observing the progress of work
Civilization, development and urban progress in the Kingdom of Saudi Arabia, an aerial photo of a group of residential buildings under construction, improving and developing the infrastructure, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, construction cranes, pouring concrete and laying foundations
A building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Saudi urban development and progress, improving and developing the infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, a construction crane and pouring concrete over a modern building under construction
Building under construction using modern machinery in the Kingdom of Saudi Arabia, implementation of the reconstruction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering
Machinery, heavy equipment, cranes and high scaffolding, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Construction works, concrete pouring and foundation laying, heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, implementation of construction plan and formation of metal structure
Urban development concept, skyscraper under construction in Saudi Arabia, implementation of the reconstruction plan by forming the basic structure of the building, heavy machinery and equipment, cranes and high scaffolding, concept of structural and architectural engineering, tower under construction using modern machinery
Concept of structural and architectural engineering, building under construction in Saudi Arabia, close-up of heavy machinery and equipment, cranes and high scaffolding, construction works, concrete pouring and foundation laying, implementation of construction plan and metal structure formation
A skyscraper under construction in the Kingdom of Saudi Arabia, building the main facade and implementing the reconstruction plan by forming the basic structure of the building, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, a tower under construction using modern mechanisms
Building under construction in Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, concept of structural and architectural engineering, construction works, concrete pouring and foundation laying, implementation of construction plan and metal structure formation
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the United Arab Emirates
Implementation of the reconstruction plan and the formation of the metal structure, urban development and progress, construction works, concrete pouring and laying foundations, heavy machinery and equipment, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the United Arab Emirates
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, a building under construction in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure
A construction site crowded with machinery, heavy equipment, cranes and high scaffolding, construction work, pouring concrete and laying foundations, implementing the reconstruction plan and forming the metal structure, the concept of structural and architectural engineering, a building under construction in the Kingdom of Saudi Arabia
Construction work, pouring concrete and laying foundations, a building under construction in the Kingdom of Saudi Arabia, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering, implementing the reconstruction plan and forming the metal structure, a tower under construction using modern mechanisms
Heavy machinery and equipment, cranes and high scaffolding, silhouette of a building under construction in Saudi Arabia, concept of structural and architectural engineering, worker implementing construction plan and forming metal structure, construction works, pouring concrete and laying foundations, Salouet
Construction, contracting and real estate development, establishing the foundations for residential projects, building construction and mega projects in the Kingdom of Saudi Arabia, close-up of a Saudi Arabian Gulf worker wearing a helmet and a protective vest pouring concrete at a construction site, youth professions and jobs
Heavy machinery and equipment, cranes and high scaffolding, building under construction in Saudi Arabia, concept of structural and architectural engineering, construction works, concrete pouring and foundation laying, implementation of construction plan and metal structure formation
Building under construction in Saudi Arabia, construction works, concrete pouring and foundation laying, implementation of the reconstruction plan and forming the metal structure, black and white photo of a tower under construction using modern machinery, concept of structural and architectural engineering
Construction cranes, concrete pouring and foundation laying, civilization, development and urban progress in the Kingdom of Saudi Arabia, a group of residential buildings under construction, improving and developing the infrastructure, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure
Heavy machinery and trucks on a large construction site in a desert area, implementation of the reconstruction plan and forming the metal structure, a modern building under construction, urban expansion in Saudi Arabia, the concept of structural and architectural engineering
Building under construction using modern machinery in the Kingdom of Saudi Arabia, implementation of the reconstruction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding, the concept of structural and architectural engineering
The concept of structural and architectural engineering, building under construction using modern machinery in the Kingdom of Saudi Arabia, implementing the reconstruction plan and forming the metal structure, construction works, pouring concrete and laying foundations, heavy machinery and equipment, cranes and high scaffolding
Implementation of the reconstruction plan and forming the metal structure, construction cranes and pouring concrete over modern buildings under construction, Saudi urban development and progress, improving and developing the infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering
Construction cranes and concrete pouring on top of modern buildings under construction, Saudi urban development and progress, improving and developing infrastructure in the Kingdom of Saudi Arabia, the concept of structural and architectural engineering, implementing the construction plan and forming the metal structure
Basic structure of building, skyscraper under construction in Saudi Arabia, equipment, cranes and high scaffolding, concept of structural and architectural engineering, tower under construction using modern machinery, construction workers operating heavy excavation machines