Material Management and Construction Productivity https://www.blogger.com/profile/02209904822147810033

1. helpdesk@construction-productivity.co.uk
htt://www.construction-productivity.co.uk
MATERIAL
MANAGEMENT

2. MATERIAL MANAGEMENT
 Materials management is an important
process.
 It is about how to reduce waste
 Improve productivity
 Follow a Sustainable development
 It is about how a building is designed and
how materials are estimated?
 It is about how materials are acquired and
how the packaging is specified.

3. MATERIAL MANAGEMENT
 It is about how the delivery schedule is
designed.
 It is about how contractors plan materials
use and how they manage previously
used materials and cuts.
 It is about how waste is managed for use
elsewhere or recycling rather than being
discarded in a landfill.

4. MATERIAL MANAGEMENT
 Often on site usable or reusable pieces of
material can be seen in a construction site.
-Examples
 lighting ballasts,
 electrical switches
 plasterboards damaged under the rain/bad
handling/storage etc.
 Torn bags of cement,
 Broken tiles, bricks, blocks,
 various lengths of piping and conduit.
 And many more.

5. MATERIAL MANAGEMENT
Cost of Waste
 The cost of waste is more than simply the cost of
getting it to a landfill and dumping it.
The cost of waste is:
 Original cost of material
 Delivery cost
 Handling cost
 Management cost
 Cleanup cost
 Waste hauling cost
 Tipping fee
=Total cost of construction waste

6. MATERIAL MANAGEMENT
Materials use
 materials reuse,
 reduction and recycling
 begins in the planning stages of a project.
1. It starts with the architect,
2. proceeds through the engineer, the estimator,
the purchaser,
3. The construction manager
4. finally the contractors.

7. MATERIAL MANAGEMENT
 Materials cost control often starts with a
plan.
 Once the material is on site and especially
once its been cut, it is too late to plan.
 With carefully well planned operational
procedures and construction practices, a
plan can be developed and implemented
to save significant costs in materials.

8. MATERIAL MANAGEMENT
 Researchers in the past have tried to
quantify the potential benefits of applying
effective material management practice on
commercial building practice.
 Overall, they found that 25 site factors and
conditions potentially affect productivity.
 One of which is material management, this
is shown diagrammatically in figure below.

10. MATERIAL MANAGEMENT
 Ineffective material management reduces
labour productivity.
 Material handling could be improved by
simple measures such a:
 organizing the delivering and storage of
materials in a sequential manner,
 the end result will improve productivity.

11. MATERIAL MANAGEMENT
 Researchers have tried to quantify the potential
benefits of applying material management
practices on construction sites.
 They carried out material management on a
number of selected sites.
 The projects were all constructed under similar
conditions.
 Only one project used material management
technique.
 All material related problems were identified,
quantified, and linked to site material practice.

12. MATERIAL MANAGEMENT
 The number of work hours wasted was
calculated.
 The result of their study concluded that
work hour losses resulting from poor
material management caused cost
overrun of 18%.

13. MATERIAL MANAGEMENT
 The case study also showed that an
investment of £1100.00 in the field of
material management would have saved
£6300.00 in quantified disruption, a
benefit/cost ratio of 5.7.
 Material management involves organizing
the storage area, delivery of materials,
material handling and distribution.

14. MATERIAL MANAGEMENT
 The construction industry has a major
impact on the environment, both in terms
of the resources it consumes and the
waste it produces.
 The construction industry is responsible
for producing all kinds of wastes.
 The amount and type of which depends
on factors such as:
 the stage of construction,
 type of construction work and practices on
site.

15. MATERIAL MANAGEMENT
 Over 90% of non -energy minerals
extracted in Great Britain are used to
supply the construction industry with
materials.
 Every year more than 70 million tones of
construction and demolition waste has
been produced in England and Wales

16. MATERIAL MANAGEMENT-POLICY
 Reduce > Reuse > Recycle
 The construction industry is the UK’s
largest user of natural resources, and
produces a large amounts of waste.
 Everyone in the construction industry can
contribute to tackling waste-by.
 It is by reducing waste, using materials in
a better way, with care.
 Collecting waste for recycling.

17. MATERIAL MANAGEMENT
1. 400 MILLION TONNES of material is
used
2. 100 MILLION TONNES of waste is
produced – more than one-third of the
UK’s annual waste
3. 25 MILLION TONNES of construction
waste is disposed to landfill

18. MATERIAL MANAGEMENT
Waste hierarchy
1. Reuse
2. Recycle
3. Dispose
 Firstly, aim to reduce the amount of waste you
create.
 If waste is created, identify ways you can reuse
the materials.
 Finally, if materials cannot be reused then
collect them to recycle.
 Only dispose of waste as a last resort.

19. MATERIAL MANAGEMENT
 Try to be involved early in a project to
encourage designs that cause less waste
to be created.
 Use standard sizes and quantities of
materials, and plan ahead to reduce off
cuts.
 Avoid over-ordering.

20. MATERIAL MANAGEMENT
 arrange deliveries to match work stages,
 avoid materials being stored on site longer
than necessary,
 ensure storage areas are safe, secure and
weatherproof,
 Minimise rework from errors and poor
workmanship.

21. MATERIAL MANAGEMENT
 Refuse poor quality or damaged deliveries.
 Don’t remove protective packaging from
materials before they are needed.
RECOMMENDATIONS
 The site induction and toolbox talks are
opportunities to raise awareness of good waste
management.
 Having one person responsible for ordering
materials helps avoid surplus being purchased.

22. MATERIAL MANAGEMENT
 Buying sand and gravel in bulk bags
rather than loose helps reduce wastage.
 Computer software is available to estimate
required quantities accurately.
Your duty of care
 All businesses have a duty to ensure that
waste they produce is handled safely and
within the law.
 This is a duty of care we are all part of the
process.

23. MATERIAL MANAGEMENT
 check that any company removing waste
from your site is a registered waste carrier,
 make sure that they take the waste to a
registered waste management site,
 If you do not check and it is illegally
disposed of, you could be held
responsible.

24. MATERIAL MANAGEMENT
 Every load of waste that leaves your site
must be accompanied by a Waste
Transfer Note.
 This provides an accurate description of
the waste to enable it to be treated safely.
 Keep copies of all waste transfer notes for
at least two years

25. MATERIAL MANAGEMENT
Site Waste Management Plans
 A Site Waste Management Plan (SWMP)
is a legal requirement in England for
projects over £300,000.
 It requires you to forecast and record
waste and how it is managed.

26. MATERIAL MANAGEMENT
 Using the SWMP as a waste management
tool can help the company to:
1. increase profit margins;
2. reduce waste management costs;
3. demonstrate compliance with your legal
obligations; and decrease the amount of
waste you dispose of to landfill.

27. MATERIAL MANAGEMENT
 The true cost of waste is not just the cost
of hiring a skip.
 It also includes:
1. the cost of the materials that end up as
waste;
2. the labour cost to handle the waste on
site; and the cost of waste storage,
3. transport, treatment and disposal.

28. MATERIAL MANAGEMENT
1. Most of waste arises on the structure
and fitting stages of construction.
2. BENCHMARK DATA
There are no agreed bench mark data
available.
3. On going study at Centre for Research in
the Built Environment is looking at the
bench marking for waste minimisation.

29. MATERIAL MANAGEMENT-WASTE CONTROL
Environmentally friendly policy
 Step1-Sustainable development
 Step2-On site Material Management
Policy
 Step3-On site prevention policy
 Step4-On site reduction
 Step5-On site reuse Policy
 Step6-On site recovery Policy

30. MATERIAL MANAGEMENT
Not recommended policy
 Off site reuse
 Off site recovery
 Wastes disposal to Landfill

31. MATERIAL MANAGEMENT

32. MATERIAL MANAGEMENT
RECORD KEEPING
 Complete documentation of all contract
activities is an important part of material
management.
 These records provide an accurate record of:
1. material testing,
2. Inspections
3. work performed.
 They also provide proof of and support for the
decisions and actions taken.
 These records show that the contractual
obligations of the contractor have been fulfilled
and the public’s funds have been properly
spent.

33. MATERIAL MANAGEMENT
 These records show how the material
was used, what was the level of
material wastage on site.
 I twill provide valuable information on
how to reduce waste and have a tight
control on material management.

34. MATERIAL MANAGEMENT
Good Recordkeeping Practices
 Keep records up-to-date, accurate, and
complete.
 This will save time throughout the process.
-To achieve this:
 enter records on the day of the event,
 enter information in a manner so another person
could easily complete the entry,
 when needed, without additional instructions.

35. MATERIAL MANAGEMENT
 If % waste allowed is =5% a good record
keeping will show the level of waste for each
activities.
 If the waste for let us say activity 100-120 is
6.65% the good record keeping will
demonstrate why waste was high for that
activity.
 Lesson can be learnt from waste increase.
 Waste and material management have strong
correlation.

36. MATERIAL MANAGEMENT
Recordkeeping Policies and Procedures
Resources
 Record the date first.
 Record verbal instructions and minor conditions.
 Weather conditions.
 Work in progress, including temporary erosion
control methods employed.
 Location of work (activity 1-2, 2-3,…)
 Contractors and subcontractor’s work force
 Arrival and departure of equipment

37. MATERIAL MANAGEMENT
♦ Quantity of equipment and its usage at the
project for each activity.
♦ Important instructions to the contractor.
♦ Names of official visitors and a summary
of any discussions with the visitors
♦ Unusual construction or work conditions
♦ Decision making discussions with the
contractor
♦ Disagreements with the contract

38. MATERIAL MANAGEMENT
 Detailed information that may have a connection
with a probable dispute or claim against the
department
 Project completion and final inspection
 Other important features of the project, such as
discussions concerning Disadvantaged
 Business Enterprise (DBE) and Equal
Opportunity (EEO)
 Record time suspension and reason
 Record resumption of work

39. MATERIAL MANAGEMENT
 Record all materials brought onto the project
even if they are material-on-hand and the date
 that the material arrived
 Record the date that Storm Water Inspections
were performed and any violation by the
 contractor of Project Specific Locations (PSLs)
in the ROW or within one mile of the
 project
 Record traffic control being used

40. MATERIAL MANAGEMENT
 Time inspector is on the project
 Credit Days – Enter reason for credit day
in Site Manager Daily Work Report (DWR)
and Diary. (Exception for Saturday &
Sunday – unless the contractor is
working.)

41. MATERIAL MANAGEMENT
 NOTE: The Site Manager DWR contains 10
different categories on the first tab under
‘Remarks’
 to record information. These categories are:
 • Accident
 • Contractor Work Hours
 • Dispute/Claim
 • EEO Issues
 • GENERAL

42. MATERIAL MANAGEMENT
 • General
 • Other
 • Safety Violations
 • Traffic and
 • Visitors.
 Records Management Resources from GSD
 Keeping good records does not mean keeping
all records indefinitely. The Records
Management
 Section of the General Services Division (GSD)
provides guidance on general records

43. MATERIAL MANAGEMENT
 management issues on their website.
Information on the Records Retention Schedule
is also
 available. Specific information on District
Construction Records can be accessed online.
The
 link to Division/Office Schedules of Unique
Records include records maintained by the
 Construction Division and other Divisions. To
establish record retention practices that conform
 to the standards described in these online
resources, review of these sites is
recommended.

44. MATERIAL MANAGEMENT
 Electronic Data Management Systems
(EDMS)
 Electronic Data Management Systems
(EDMS) will provide the department with a
means of
 maintaining project records that are not
stored in Site Manager electronically.
Several districts

45. MATERIAL MANAGEMENT
 and divisions now have EDMS to allow
storage of electronic records and allow
scanning and
 storing hard-copy records. Ideally, most, if
not all, documentation will be electronically
stored
 from cradle to grave in the future.