This document discusses the process of working drawings, detailing, tendering, contract procurement and administration for construction projects from start to finish. It provides an overview of the minimum requirements for working drawings, outlines the stages of tender documents and contract procurement, and describes the routines involved in handing over the site to the contractor, basic construction monitoring checkpoints, and activities required to manage the project until final completion and certification.

1. WORKING
DRAWING AND
DETAILING.
BY
ABDULLAHI MOHAMMED LAWAL
February, 2021

2. CO-ORDINATED PROJECT
INFORMATION (CPI)

3. • Coordinated Project Information (CPI)
has given the minimum information an
Architectural Working Drawing should
have.
• Working Drawings should have:
1. Site plan 5. Sections
2. Floor plans 6. Elevations
3. Ceiling plan 7. Schedules
4. Roof plan 8. Details
CPI MINIMUM REQUIREMENTS

4.  Full Working Drawings…. CPI
Standard
 Written Specifications.
 Instruction to tenderers.
 Preliminaries.
 Conditions of Contracts.
 Bill of Quantities.
1st SEMESTER
TENDER DOCUMENTS

5. 2nd SEMESTER
CONTRACT PROCUREMENT
 Types of Tendering.
 Methods of Tendering.
 Tender Handling.
 Tender Analysis.
 Tender Report &
Recommendations.
 Contract Negotiations.
 Contract Signing.

6.  Handing Over Site to
Contractor.
 Site Inspection & Site
Meetings.
 Architect’s Instructions.
 Architect’s Certificates.
 Project Quarterly Report.
 Practical Completion.
 Defects Liability Period.
 Final Account & Final
Certificate.
2nd SEMESTER CONT…
MONITORING & INSPECTION

7. CONTRACT ADMINISTRATION
HANDING OVER OF SITE
TO
FINAL CERTIFICATE

8. PREAMBLE (letter of award)
 Should state the awarded sum.
 Should state the completion period.
 Demand for letter of acceptance within
a time frame.
 Invite contractor for signing of
agreements.

9.  Prepare required sets of drwgs. and
BQs for signing.
 Stamp all drwgs. as “CONTRACT
DRAWINGS”.
 Tag all important pages that require
signing or initialing.
 Signing, initialing and
witnessing…..
 Issue original to Client; duplicate to
Contractor; copies to Arc. & QS
PREAMBLE
(signing of contract agreement)

10. -The usually un-asked question-
“Mr. Architect, how can I get the
contractor”
 do a good job
 within the agreed time;
 within or below the agreed time?

11. HANDING OVER SITE
(to contractor)
 Agree on the earliest date with
client.
 Notify contractor, client and all
consultants of the date and time.
 Remind consultants to prepare
sets of documents to be issued to
contractor on that day.

12. The
4 Routines
of
Handing Over of Site

13. HANDING OVER ‘ROUTINE’…1
 General introduction.
 Attendance/ compilation of Directory
of site management team.
 Introduction of persons-in-
charge…client/consultants/contracto
r.
 Submission of 2 copies of contract
drwgs & contract bill to contractor.
 Issuance of a copy of Planning
Authority approved drwgs &
approval letter for site reference.

14. HANDING OVER ‘ROUTINE’…2
 TOUR ROUND THE SITE for:
 Beacons inspection.
 Location of temporary site office,
stores & materials stockpiling.
 Identification of impediments to
setting out (if any).
 Rights of adjoining owners.

15.  Outline chain of communications.
 Agree on laboratories for materials
and concrete testing.
 Identify source of temporary power
and water to the site.
 Agree on period of mobilization.
 Fix date of commencement.
 Calculate date of completion.
HANDING OVER ‘ROUTINE’…3

16.  ISSUE GENERAL INSTRUCTIONS:
 Procure insurances as per contract.
 Prepare program of works.
 Breakdown of Preliminaries.
 Agree on a laboratory for testing concrete.
 Invite Arc. For inspection & approval of setting out before
excavations.
 Do not cast blinding until Engr. permits.
 Submit samples before bulk purchase..etc.
 Any other matter????
 Replacement of clients security men
with contractor’s.
 FIX DATE OF NEXT SITE
MEETING….
HANDING OVER ‘ROUTINE’…4

17.  Handling correspondences from
contractor/client/other consultants.
 Checking design details of the next
months activities ahead of request.
 Issuance of Architect’s Instructions (AI).
 Coordination of instructions from
Engineers.
 Answering requests from the
contractor.
 Issuance of Architect’s Certificates.
BETWEEN SITE MEETINGS?

18. BASIC CONSTRUCTION MONITORING
CHECK POINTS

19. PROGRAM OF WORKS
S/N
11
ACTIVITY 1 2 3 4 5 6 7 8 9 10 11 12
1 Site clearance & setting out
2 Excavation of trenches
3 Substructure
4 Block work to lintel
5 Block work to head course
6 Roofing
7 Finishing
8 Clean-up, mop-up &
handover

20. OBJECTIVE OF MONITORING
 To ensure the works is in accordance with
Specs.
 To avoid time overrun by stopping works in
error.
 To save costs through apt intervention.
 It is not a witch-hunting exercise.
 It is not a power-wielding opportunity.
 It is not aimed as curative, but preventive.

21. The goal is……
QUALITY work
at budgeted COST
completed within
reasonable TIME.

22. Thank you for Listening