Monday, August 24, 2015

Condition of Contract - (Preambles)

Preambles

Preamble notes are one of the most important parts in a tender. It is necessary to discuss the preamble notes when pricing the tender. In preambles, we have all the information and guidelines about the rates and specification. Generally preamble notes contain the general specification of the construction work under each item and how the rate should be established.

Example:

B.1 Excavation & Earthwork

Rate Shall include for:-

  • Levelling Bottom of Trenches
  • Backfilling with selected excavated material and consolidation
  • Dewatering including pumping out water up to the nearest manhole
  • Disposal of surplus excavated material away from premises
  • Bulking after excavation
  • Necessary Shoring and shuttering
  • Working space if required only net areas are considered for measurement
  • Cost of testing materials and samples to establish to specifications               
B.3 Concrete Work

Unless otherwise stated all concrete shall be:-
  1. Grade 20 (3/4" minimum aggregate size)
  2. All concrete shall be so cast as to receive only that finishing on it's exposed as specified in the respective items.
  3. All concrete shall be made dense with vibrator and finished with monolithic to receive tiles, granite etc. The type and stability which shall be agreed with the consultant prior to commencement of concerning of each item.

Rates shall include for the plant for mixing, handling, hoisting, depositing compacting, vibrating, curing making good after removal of formwork and any test establish the compliances with specification whatever necessary.

Likewise, we will have a set of notes under each work of how the pricing must be done in the quotation. Therefore, it is essential to refer the preamble notes carefully enough where we have all the details to price the tender.




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