Nhbrc request for proposals: five-year panel of contractors for underpinning and piling (national)

Closing: 2026-09-15T11:00:00Z.

Bids must be submitted electronically via the eTender portal. Suppliers must register and log in to the portal, complete all required returnable documents, and click Submit before the closing time. A confirmation pop-up is shown upon successful submission; the bid status must read 'Submitted'. Bidders may edit or withdraw a bid before the closing time via the portal.

Bidders must be registered on the Central Supplier Database (CSD) and have a valid CSD login. The tender is open to contractors for underpinning and piling services. No other eligibility criteria are stated in the provided document.

Central Supplier Database (CSD) registered email address

Central Supplier Database (CSD) login password

{"name":null,"email":null,"phone":null,"department":"QUANTITY RATE AMOUNT","address":null}

The document does not specify formal eligibility criteria such as CSD registration, tax clearance, B-BBEE level, or CIDB grading. However, the contractor must be able to sign a 'Remedial work contract' with the NHBRC and must comply with all requirements of the Health and Safety Specification. The contractor must also be prepared to visit the site before tendering and accept responsibility for the accuracy of dimensions.

construction area etc, during the period of the works

Before submitting tender, contractor shall visit site and satisfy himself as to nature and extent of work and value of materials. No explosives may be used for demolition unless otherwise stated. Contractor shall carry out works with minimal mess, noise, and disturbance to adjoining premises, providing temporary tarpaulins as directed. Water supply pipes encountered shall be stopped off or removed, new connections made with proper fittings. Doors, fanlights, fittings, frames, linings to be re-used shall be overhauled before refixing. Prices for taking out doors, windows include removal of beads, architraves, ironmongery. Building up openings in existing walls: cement screeds, pavings, granolithic, tops of walls shall be levelled and prepared. Making good of finishes includes making good of brick and concrete surfaces. Contractor shall take all dimensions affecting existing buildings and is solely responsible for accuracy. All rates include carting away demolished material to a dumping site located by contractor.

Prices for filling are to include for all necessary density tests in

accordance with SABS 1200D

Excavation, filling etc

Excavations, etc

Excavation in earth not exceeding 2m deep

1 Trenches m3 90,00

Underpinning in 1.5m alternating sections under existing

2 foundations m3 161,20

3 Reduce levels under existing apron / gravel m3 97,34

Back excavation of vertical sides of excavation in earth for working

space including backfilling in 150mm layers compacted to 97%Mod

AASHTO density

Exceeding 1000mm and not exceeding 1500mm deep for

4 underpinning (All as per Eng Detail) m2 108,16

Extra over all excavations for carting away

Surplus material from excavations and/ stock piles on site to a

5 dumping site to be located by the contractor m3 135,20

Risk of collapse of excavations

6 Sides of trenches and holes not exceeding 1.5m deep m2 19,47

Keeping excavations free of water

7 Keeping excavations free of all water other than subterranean water Item 540,80

Filling etc

Earth filling obtained from the excavations and stabilised with 2.5%

cement / soil mixture, compacted in layers of 150mm to 95% Mod

AASHTO density

8 Trenches etc. m3 95,00

Earth Filling (G7 Material) supplied by the contractor compacted in

150mm layers to a 97% Mod AASHTO density (All as per Engineers

Detail)

9 Under new paving m3 585,00

10 Backfilling to trenches, holes, etc m3 585,00

Compacting of surfaces

11 Bottom of Trenches m2 40,00

Compaction of ground surface under paving etc including scarifying

for a depth of 150mm, breaking down oversize material, adding

suitable material where necessary and compacting to 97% Mod

12 AASHTO density m2 60,00

Compaction of ground surface under existing strip footings,

including scarifying for a depth of 150mm, stabilize with 2% cement

13 and compact to 95% Mod AASHTO density. (All as per Eng. Detail) m2 64,89

Stone filling of 19mm broken stone supplied by the contractor

14 In Sub soil drain trenches around pipes m3 600,00

Prescribed density tests on filling

15 Modified AASHTO Density test No 486,72

Soil poisining

Soil insecticide in accordance with SANS 5859

16 Under paving/Apron etc m2 15,60

Bill NO 4

Concrete, formwork and reinforcement

Supplementary preambles

Cost of tests

The costs of making, storing and testing of concrete test cubes as

required under clause 7 "Tests" of SABS 1200 G shall include the

cost of providing cube moulds necessary for the purpose, for testing

costs and for submitting reports on the tests to the architect. The

testing shall be undertaken by an independent firm or institution

nominated by the contractor and to the approval of the architect.

(Test cubes are measured separately)

Formwork

Descriptions of formwork shall be deemed to include use and waste

only (except where described as "left in" or "permanent"), for fitting

together in the required forms, wedging, plumbing and fixing to true

angles and surfaces as necessary to ensure easy release during

stripping and for reconditioning as necessary before re-use.

The vertical strutting shall be carried down to such construction as is

sufficiently strong to afford the required support without damage

and shall remain in position until the newly constructed work is able

to support itself

Formwork to soffits of solid slabs etc shall be deemed to be to slabs

not exceeding 250mm thick unless otherwise described

Formwork to soffits of slabs, beams, etc shall be deemed to be

propped up exceeding 1,5m and not exceeding 3,5m high unless

otherwise described

Formwork to sides of bases, pile caps, ground beams, etc will only

be measured where it is prescribed by the engineer for design

reasons. Formwork necessitated by irregularity or collapse of

excavated faces will not be measured and the cost thereof shall be

deemed to be included in the allowance for taking the risk of

collapse of the sides of the excavations, provision for which is made

in "Earthworks"

User Note

In order to accommodate the custom in some regions to give

formwork to sides of beams, isolated beams, etc separately from

formwork to the soffits thereof, the items in respect of formwork to

beams, isolated beams, etc are given under the headings of

"formwork to sides", "formwork to soffits" and "formwork to sides

and soffits"

Reinforced concrete cast on/in formwork

20 Mpa/19mm Concrete

1 Concrete Slab / Apron m3 1 946,88

Reinforced concrete cast against excavated surfaces

25 Mpa/19mm Concrete (Minimum 100mm Slump and Vibrate all

air out)

Underpinning bases/strip footings in 1.5m alternating sections

2 under existing foundations. (All as per Engineers detail) m3 2 704,00

Test cubes

Making and testing 150 x 150 x 150mm concrete strength test cubes

3 (Provisional) No 562,43

Concrete sundries

Finish top surface of concrete smooth with a wood float

4 Apron m2 27,04

Smooth formwork (degree of accuracy ii)

Smooth formwork to sides

5 Edges, risers, ends and reveals not exceeding 300mm high or wide m 48,67

Movement joints etc

Expansion joints with 10mm soft board between vertical concrete

and brick surfaces

6 10mm Joints not exceeding 300mm high m 70,00

Saw cut joints

7 3 x 40mm Saw cut joints in top of concrete m 32,45

Reinforcement (provisional)

High tensile steel reinforcement to structural concrete work

8 12mm Diameter bars t 17 846,40

Fabric reinforcement

9 Type Ref 614 Fabric reinforcement in concrete apron m2 175,00

Bill NO 5

Precast concrete

Supplementary preambles

Sizes:

Blocks, sills, etc measured linear shall be made in suitable lengths.

Large size setting out drawings shall be prepared where necessary

and submitted to the architect for approval before moulds are made

General:

Where kerbstones, blocks, etc are laid in ground descriptions shall

be deemed to include necessary excavation, filling in and ramming

Precast concrete

User note:

The following precast concrete paving descriptions are only to be

used when paving slabs etc are purpose made to detailed

specifications and other than those available ex stock

Storm water channel 250 x 610 x 90mm

1 Storm water channel laid to falls including all ground works etc. m 350,00

6 Keeping excavations free of water Item 540.80

Filling etc

Earth filling (G5) Material) supplied by the contractors compacted in

150mm layers to a 97% Mod AASHTO density

7 Backfilling to trenches, holes, etc m3 405.60

Coarse river sand filling supplied by the contractor

8 Under Floors / Apron etc m3 232.54

Compacting of surfaces

9 Under paving/apron/surface beds m2 20.00

Soil poisoning

Weedkiller (active ingredients metalaclor 102,8 g/l,terbitilasien

248,6 g/l and atrasien 248,6 g/l) mixed in theproportion of 100 ml

weedkiller to 100 l water and applied ata rate of 10 l/m2

10 Under paving etc m2 16.22

Landscaping

Grassing, ground covers, etc

Carefully remove "Kikuyu" and set aside for re use and later re install

11 in similar new position including fertilizer etc. m2 55.00

Bill NO 6

Masonry

Supplementary preambles

Brickwork

Sizes in descriptions

Blocks are to be either solid or hollow modular dense concrete

masonry units having a compressive strength of 7Mpa

Where sizes in descriptions are given in brick units, "one brick" shall

represent the length and "half brick" the width of a brick

Hollow walls

Descriptions of hollow walls shall be deemed to include leaving

every fifth perpend of the bottom course of the external skin open as

a weep hole

User note

The following preamble generally applies for works in hot and humid

coastal areas

Bagged and sealed walls

Walls in two skins described as "bagged and sealed" shall be

deemed to include having the outer face of the inner skin bagged

with 1:6 cement and sand mixture and sealed with two coats

bitumen emulsion waterproofing coating

Face bricks

Bricks shall be ordered timeously to obtain uniformity in size and

colour

Pointing

Descriptions of recessed pointing to fair face brickwork and face

brickwork shall be deemed to include square recessed, hollow

recessed, weathered pointing, etc

Blockwork

Concrete masonry units

Blocks are to be either solid or hollow modular dense concrete

masonry units having a compressive strength of 7MPa

Wall ties for blockwork

Wall ties shall be polypropylene ties complying with BS 76377. Ties

for hollow walls shall be of sufficient length to allow not less than

75mm of each end to be built into the blockwork. Ties are to be

spaced at intervals of not more than 1m in the horizontal direction

and not more than 400mm staggered in the vertical direction except

at openings, vertical joints or ends of walls where they are to be

placed vertically above each other

Blockwork

Blockwork shall comply with SANS 10145 "Concrete Masonry

Construction"

Surfaces to be plastered shall have joints raked out to a depth of at

least 10mm to provide a key. Cavities of hollow walls shall be kept

free of mortar droppings or other undesirable matter. Every second

perpend of the bottom course of the external skin of hollow walls

shall be left open as a weep hole

Standard complementary blocks

Descriptions of blockwork shall be deemed to include standard

complementary blocks such as corner, three-quarter, half and

quarter blocks required in the construction of corners, reveals,

jambs, ends, etc to solid and hollow walls and for bonding as

necessary

Decorative blocks

Blocks shall be of approved manufacture, sound, well burnt or cured

and uniform and true in size, shape and colour

Repairing of cracks

Repairs for vertical diagonal and horizontal wall cracks which are

smalller than 5mm in width and where small deformation occurred

(All as per Eng Detail)

Saw-cut neatly at least 300mm either side of crack ensuring a

1 square cut with no further edges m 20,00

Rake out crack to a depth of 30mm to form a v -groove and fill with

2 Sikadur crack filler and smooth m 35,00

Steel diamond mesh (Metal plaster lath) to walls secured with galv.

3 nails @300mm centres (All as per Eng Detail) m2 114,00

Paving

Supplementary preambles

Paving bricks with butt joints on 25mm thick river sand bed with

sand and cement mixture swept into joints and hosed down

including preparation of ground or filling

4 Re-instate paving in stretcher bond to fall. m2 71,00

Bill NO 7

Paintwork

User note

The following four items, given as examples, have been set up to

comply with the Munsell system (the extra over option) as

prescribed in the Standard System of Measuring Building Work and

should be inserted at the end of each type of paint where applicable

Extra over paintmwork to all areas, for paintwork in colours which

have a value of 7 or less based on the Munsell system m2

Supplementary preambles

Preparatory work to existing work

Previously painted plastered surfaces

Surface shall be thoroughly washed down and allowed to dry

complete before any paint is applied. Blistered or peeling paint shall

be complete removed and cracks shall be opened, filled with a

suitable filler and finished smooth

Previously painted metal surfaces

Surface shall be thoroughly rubbed and cleaned down blistered or

peeling paint shall be complete removed down bare metal

Previously painted wood surfaces

Surfaces shall be thoroughly cleaned down. Blistered or peeling

paint shall be completely removed and cracks and crevices shall be

primed, filled with suitable filler and finish smooth

Colours

Unless otherwise described all paintwork shall be deemed to have a

colour value in excess of 7 on the munsell system in accordance

with SANS 1091

Paintwork etc to new work

On internal floated plaster surfaces

Prepare and apply one coat primer and two coats quality paint to

match existing (Plascon Product)

1 On walls m2 76,00

Paintwork, etc to previously painted work

On internal floated plaster surfaces

Two coats interior high quality acrylic paint to match existing

2 Walls m2 65,00

Bill NO 8

Provisional sum

Supplementary preambles

General

Work for which budgetary allowances are provided will be measured

and valued in accordance with the quantity surveyors assessment

and shall be deducted in whole or in part if not required without any

compensation for loss or profit on the said allowance

Prime cost amounts and provisional sums are net. prime cost

amounts include for delivery to site of all articles concerned

Provisional sums are for material and equipment supplied and

installed complete by firm of specialist

Note: These items are to be taken into account in the pricing of

Preliminaries and General as they will not attract separate

Preliminaries of their own.

Profit

Where stated, the contractor may allow for profit if required

Irrigation system

Provide the sum of Three Thousand Rand (R 3 000) for taking out the

1 irrigation system and later refit in similar new position. Item 3 000,00

Sub total st 0

Contingency

Allow a contingency of 10% to be used as directed by the Quantity

Surveyor. SUM 10%

Value added tax

following preamble in respect of testing may be inserted

Testing

required under clause 7 "Tests" of SABS 1200 G shall include the

cost of providing cube moulds necessary for the purpose, for testing

costs and for submitting reports on the tests to the architect. The

testing shall be undertaken by an independent firm or institution

nominated by the contractor and to the approval of the architect.

(Test cubes are measured separately)

Making and testing 150 x 150 x 150mm concrete strength test cubes

3 (Provisional) No 562,43

Bill No 1: Preliminaries and general - 20% allowance of total remedial works. Bill No 2: Alterations - removal of existing work, making good finishes. Bill No 3: Earthworks (Provisional) - excavation, filling, compaction, soil poisoning. Bill No 4: Concrete, formwork and reinforcement - concrete slabs, underpinning bases, test cubes, reinforcement. Bill No 5: Precast concrete - storm water channels, filling, landscaping. Bill No 6: Masonry - blockwork, repairing cracks, paving. Bill No 7: Paintwork - preparation and painting of surfaces. Bill No 8: Provisional sum - irrigation system R3,000, contingency 10%.

No specific requirements found

The contractor is to comply with all requirements of the Health and

Housekeeping and compliance with Conciliation Officer site rules

The contractor will be responsible for a high standard of

housekeeping in his site establishment, delivery of materials and

goods and removal of rubble, debris, etc., storage areas and

construction working areas to the approval of the Conciliation

Officer

Working hours

Should the contractor wish to work outside normal working hours or

at weekends in order to maintain his building programme, he shall

notify and obtain the approval of the Conciliation Officer before

doing so. The cost of this overtime will be for the contractor's

account

Preliminaries and general

1 Prelimnaries and general % allowance (of total remedial works) % 20%

Bill NO 2

Alterations

Supplementary preambles

View site

Before submitting his tender the contractor shall visit the site and

satisfy himself as to the nature and extent of the work to be done and

the value of the materials contained in the buildings or portions of

the buildings to be demolished. No claim for any variations of the

contract sum in respect of the nature and extent of the work or of

inferior or damaged materials will be entertained

Explosives

No explosives whatsoever may be used for demolition purposes

unless otherwise stated

General

The contractor shall carry out the whole of the works with as little

mess and noise as possible and with a minimum of disturbance to

adjoining premises and their tenants. He shall provide proper

protection and provide, erect and remove when directed, any

temporary tarpaulins that may be necessary during the progress of

the works, all to the satisfaction of the principal agent

Water supply pipes and other piping that may be encountered and

found necessary to disconnect or cut, shall be effectually stopped

off or grubbed up and removed, and any new connections that may

be necessary shall be made with proper fittings, to the satisfaction

of the principal agent

Doors, fanlights, fittings, frames, linings, etc which are to be re-used

shall be thoroughly overhauled before refixing including taking off,

easing and rehanging, cramping up, re-wedging as required and

making good cramps, dowels, etc, and easing, oiling, adjusting and

repairing ironmongery as necessary, replacing ant glass damaged in

removal or subsequently and stopping up all nail and screw holes

with tinted plastic wood to match timber, unless otherwise

described. Re-painting or re-varnishing is given separately

Prices for taking out of doors, windows, etc shall include for removal

of all beads, architraves, ironmongery, etc

Prices for taking out and removing doors and frames shall include

for removing door stops, cabin hooks, etc and making good floor

and wall finishes to match existing

With regard to building up of openings in existing walls, cement

screeds and pavings, granolithic, tops of walls, etc, shall be levelled

and prepared for raising of brickwork

Making good of finishes shall include making good of the brick and

concrete surfaces onto which the new finishes are applied, where

necessary

The contractor will be required to take all dimensions affecting the

existing buildings on the site and he will be held solely responsible

for accuracy of all such dimensions where used in the manufacture

of new items (doors, windows, fittings, etc)

All rates includes for carting away demolished material to a dumping

site located by the contractor.

Removal of existing work

Breaking up and removing reinforced concrete including cutting off

and removing reinforcement

1 90mm Thick surface bed m2 162,24

Taking out and removing paving etc, setting aside for re-use and

later refixing in similar position

Carefully remove 60mm thick paving bricks and stockpile on site for

2 re use m2 43,26

Collect gravel pebbles, including stock pile on site and later

3 reinstall, all as per the existing. m2 20,00

Taking out/off and removing sundry metalwork, setting aside for re-

use and later re fixing in similar new position and make good.

1500 x 1650mm High Steel gate including breaking out and epoxy

4 when re fitting etc. No 400,00

Hacking up/off and removing granolithic, screeds, plaster,etc from

concrete or brickwork and preparing surfaces fornew screed,

plaster, tile finishes, etc

5 Internal plaster from walls m2 41,60

Making good of finishes etc

Making good internal cement plaster

6 Walls in patches m2 162,40

Making good cement screeds

7 30mm Screed patches to floors m2 200,10

BILL No 3

Earthworks (provisional)

Supplementary preambles

User note

The following are typical examples of descriptions of "natureof

ground"

Nature of ground

The nature of the ground is assumed to be loose sandy material,

therefore "earth", but possibly interspersed with "soft rock" or "hard

rock"

The nature of the ground is assumed to be silty clay withloose river

boulders varying in size up to approximately450mm diameter, all of

which will be deemed as "earth", butpossibly interspersed with

"hard rock"

Trial holes indicate that the nature of the ground is silty clayto a

depth of approximately 500mm with fine to mediumloose sandy

material below, therefore "earth"

Carting away of excavated material

Descriptions of carting away of excavated material shall be be

deemed to include loading excavated material onto trucks directly

from the excavations.

Filling

Not withstanding the reference to prescribed multiple handling in

clause 1 of the Standard System of Measuring Building Work,

prices for filling and back filling shall include for all selection and

any necessary multiple handling of material

User note

When no information regarding density tests is available the

following preamble in respect of testing may be inserted

identifiable at all times by means of ID cards, company name and

logos imprinted on overalls. Any person found on site not complying

with the aforementioned conditions the contractor shall be

requested by Conciliation Officer, to remove such person from site.

Health and safety

Safety Specification

satisfy himself as to the nature and extent of the work to be done and

the value of the materials contained in the buildings or portions of

the buildings to be demolished. No claim for any variations of the

contract sum in respect of the nature and extent of the work or of

inferior or damaged materials will be entertained

found necessary to disconnect or cut, shall be effectually stopped

off or grubbed up and removed, and any new connections that may

be necessary shall be made with proper fittings, to the satisfaction

of the principal agent

for removing door stops, cabin hooks, etc and making good floor

and wall finishes to match existing

concrete surfaces onto which the new finishes are applied, where

necessary

concrete or brickwork and preparing surfaces fornew screed,

plaster, tile finishes, etc

5 Internal plaster from walls m2 41,60

propped up exceeding 1,5m and not exceeding 3,5m high unless

otherwise described

complete before any paint is applied. Blistered or peeling paint shall

be complete removed and cracks shall be opened, filled with a

suitable filler and finished smooth

Soil insecticide in accordance with SANS 5859 under paving/apron. Weedkiller (active ingredients metalaclor, terbitilasien, atrasien) mixed in proportion of 100 ml to 100 l water applied at rate of 10 l/m2 under paving.

The agreement is to be a 'Remedial work contract' signed between the Employer (NHBRC) and Contractor upon acceptance of tender offer.

The contractor shall protect, uphold and maintain all public utilities and services, and shall not interfere with their operation without consent of service authorities and Conciliation Officer. The contractor shall notify the Conciliation Officer of any damages and make good at own cost. Fuel, power and water for commissioning shall include reticulation costs. The contractor shall maintain access roads and adjacent areas in clean condition. Housekeeping standards and site rules to be approved by Conciliation Officer. Working outside normal hours requires approval of Conciliation Officer; overtime costs for contractor's account.

Prepare and apply one coat primer and two coats quality paint to

Two coats interior high quality acrylic paint to match existing