Carpenter’s drawings The carpenter’s drawings present the construction of the structural frame from a geometrical point of view. Since they are closely related not only to the architectural but also the structural design of the building, they derive from the cooperation of the architect with the civil engineer. The formwork’s detailing includes accurate drawings, […]
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The drawings title block The title block is a very important element because it is the first page of a folded drawing there- fore, it must provide, at a glance, all the necessary information that regard the drawing. The title block of the drawing C.50 The sketch is very useful as it indicates the floor
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Detailing drawings for the structural frame’s construction General The architectural, structural, mechanical design of a building, have three stages, the preliminary design, the final design and the detailing. The purpose of the preliminary design is to assess all the parameters of the building, to evaluate their effect both from a legislative and a
Electronic exchange of designs – bids – orders The structural analysis and design are performed, almost exclusively, by means of a complete software package. On the other hand, the detailing requires a software combination every one of which demands a different input. A part of that necessary data is re-inserted into every software while another
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Estimation of the structural frame’s cost By the quantities estimates, we calculate the amount of materials and labor required for the building’s erection prior to the construction. Based upon these estimates and by taking into ac- count the prices offered in the market, we estimate the cost. After the completion of every constructional phase,
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Optimization of the reinforcement schedule The quantities estimates of the previous chapter are based upon the theoretical rebar lengths as provided by the software. Since the reinforcement bars have specific lengths, usually 12 ή 14 m, ordering them with their exact lengths will lead to the formation of oddments i.e. short rebars of length e.g.
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Total estimation of the materials’ quantities ESTIMATION OF CONCRETE (m³) Level Superstructure Foundation Sum (m3) Slabs – Beams Columns Foundation Ground floor 4.97 1.60 6.6 Basement 5.41 3.85 5.51 14.8 SUM (m3) 10.38 5.45 5.51 21.3 ESTIMATION OF FORMWORK (m²) Level Superstructure Foundation Sum (m2) Slabs – Beams Columns
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Estimation of the reinforcements’ quantity Ground floor – Slabs 0.36 0.36 0.36 0.36 ESTIMATION OF REBARS Diam. Ø Weight/m (Kg) Quantity n Total length L*n (m) Additional weight b (Kg) Total weight L*n*sw + b (Kg) 8 0.395 46 103.16 0.0 40.7 10 0.617 49 214.23 0.0 132.1 Sum – 95 – 0.0 172.8 Ground
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Estimation of the spacers’ quantity If there is no other rule to follow when calculating the spacers of the formwork, one could use the empirical rule presented below: RULES FOR ESTIMATING THE QUANTITTIES OF SPACERS AND REBAR CHAIRS Superstructure and foundation beams: (2m of ‘linear spacers + 2 ‘pieces of point support’) in every meter
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Estimation of the formworks’ quantity In constructional works, it is common practice to pay the technicians responsible for the form- work implementation, based upon the quantity (in m3) of casted concrete. However, the most proper way is to separate those two things therefore, the following pages regard the estimation of the required moulds. Ground
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