Introduction to contracts

Elements for valid contract

• Agreement

• Object

• Cause

• Form

• Legal capacity

• Perfect consent

Types of contract

• Lump sum –fixed price

• Re-measurement / unit price

• Reimbursable /cost plus

Contracting methods

• Traditional method (design –bid-build)

• Design& build, Turn key

• Fast Track

Choosing suitable form of the FIDIC

Priority of documents according to FIDIC

1.     Contract agreement
2.     The letter of acceptance
3.     The letter of tender
4.     General Conditions (FIDIC)
5.     Special conditions
6.     The specifications
7.     The drawings
8.     The schedules
9.     The contractor proposal
10.JV undertaking
11.If any stated in contract agreement or acceptance letter

Fidic2017 important clauses

Comments

KEYSTONE RETAINING WALL

Introduction:- Keystone is a mechanical stabilized earth wall MSEW which used to retain soil from one side, it's less cost than concrete walls. Material 1-Keystone Blocks 2-Fiberglass Pins 3-Geo-grids 4- Back-filling Material 5-Concrete pad Different type of Geogrid: TT045 can carry load till 45KN/m. TT060 can carry load till. 60KN/m. TT090 can carry load till 90KN/m. TT120 can carry load till 120KN/m. TT160 can carry load till. 160KN/m. Method Statement 1) Place HDPE Geogrids on top of the compacted soil. HDPE Geogrids are installed from the front on top of the fiber glass pins (which penetrates the grid) and from to back, Geogrids are fixed horizontally using a steel bars. 2) Lay down the precast concrete units on top of a PC foundation at a level that is a Minimum of 5% from the wall height and reach 10% (buried height) to prevent any lateral movement . 3) Put the layers of Geotextile. 4) Backfilling using fine gravel b...

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1-Development length Ld It is the minimum length of a reinforcing bar that must be embedded or "developed" in concrete to ensure that the bar can achieve its full strength in tension or compression. 2-Anchorage length La The distance that the reinforcement extends from the point where the bars are no longer required to resist moments 3-Splice length LS The distance require to transfer the force from bar to another one to upload full presentation please download this https://drive.google.com/file/d/1layyDvTlJOLzo3jfoW4K5O5UEkgoEzgN/view?usp=sharing

Edge Distance for Bolts as per Egyptian Code

Bolt grades Bolt Grade 4.6 4.8 5.6 5.8 6.8 8.8 10.9 Fy t/cm2 2.4 3.2 3.0 4.0 4.8 6.4 9 Fu t/cm2 4.0 4.0 5.0 5.0 6.0 8.0 10.0 Ordinary Bolts High strength bolts *Revit have two grades: grade 1 Fu 5t/cm2, grade2 Fu 6t/cm2 e1= end distance ...

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