英文版工程量清单(东非)P19-22

Formwork to surfaces (cont’d) F20

(a)(x) To sides and soffites of sloping beam-casings, staircase-strings and the like (grouped together).

(xi) To sloping upper surfaces of beam-casings, beams, staircase-strings and the like where more than 15 degrees form horizontal (group together)

(b) Formwork to sofffites requiring strutting over 3.50 meters high shall be so described stating the height in further stages of 1.50 metes. Formwork to sides and soffites of beams occurring below slabs where strutting is measured in accordance with the preceding rules shall be given separately stating the same strutting height as the slab soffite. (c) Formwork to sofffites of solid concrete floors or solid roofs over 250 millimeters thick shall be so described.

(d) Formwork to isolated beam-casing and isolated beams (i.e. detached form concrete floors or roof) shall be so described. Where soffites require stutting over 3.50 metres high the formwork shall be so described, including formwork to sides, stating the height in further stages of 1.50 metres.

Formwork to edges and rishers F21

(a)Formwork to edges shall be given in linear metres stating the width in

stages of 75 millimeters. Classification shall be as follows.

(i) To edges of beds, roads, footpaths, pavings and the like (grouped together).

(ii) To edges of suspended floors, landings and roofs (grouped together).

(iii) To sides of kerbs and upstands(grouped together). (iv) To risers of steps and staircase (grouped together).

(b) Formwork to sofffites of projecting eaves and hoods (grouped together) shall be given in linear metres, where not exceeding 300 millimeters wide in stages of 75 millimeters and in square metres where exceeding 300 millimeters wide.

Formwork to bands and comices F22

Formwork to projecting or sunk bands, comices and the like(grouped together)shall be given in linear metres as extra over the formwork in which they occur giving the size.

Formwork to grooves, chases, chamfers and mouldings. F23

(a)Formwork to throats, grooves, chases, rebates, chamfers over 50 millimetres wide, splayed internal angels 25 millimetres wide, mouldings and the like shall each be given sepately in linear metres stating the size. Plain stops shall be deemed to be included with the form work but stops which are splayed or be included with the formwork.

(b) Forming chamfers not exceeding 50 millimetres wide and forming

splayed internal angels not exceeding 25 millimeters wide shall be given in the description of the formwork.

Labors on formwork F24

(a)Raking cutting and curved cutting shall each be given separately in linear metres.

(b)Splayed edges and notches shall be deemed to be included with the formwork items.

(c)Cutting and fitting formwork around projecting members which will be cast in (e.g. pipes; continuity bars) shall be enumerated singly or in groups.

Precast concrete units

Precast units generally F25 (a)Precast units shall be given under an appropriate heading. (b)Particulars of the following shall be given. (i) Kind, quality and size of reinforcement. (ii) Shape of cross-section of unit. (iii) Nature and extent of surface finish.

(iv) Composition and mix of jointing and bedding materials. (v) Method of fixing.

(c) Formwork or moulds for precast units shall be so deemed to be included with the items.

(d) Precast units over 2 metres long shall be so described stating the number.

Structural units F26

Structural units (e.g. stanchions; beams; purlins; trusses)shall each be enumerated separately stating the size. Steps and staircases F27

Steps, landings, solid balustrade panels and the like shall each be enumerated separately stating the extreme size. Members of irregular shape shall be so described. Nosings, rebates, fair ends, returned ends, shaped ends, wall-holds and the like shall be given in the description. Kerbs and edgings F28

Kerbs, edgings and the like shall each be given separately in linear metres stating the mean radius. Fair ends, rounded ends, angles, intersections and the like shall each be enumerated separately when specially cast. Shelves seats, duct covers, sills lintels and copings F29

Shelves, divisions, seats, duct and covers, sill, lintels, copings and the like shall each be fully described and given separately in linear meteres stating the size. Curved members shall be so described stating the mean radius. Notches, rounded corners, fair ends, spooled ends, returned ends, angels and the like shall be enumerated separately.

Members of irregular shape shall each be enumerated separately stating the extreme size.

Templates and bases F30

Templates (or potstones), bases to posts and the like shall each be enumerated separately stating the size. Pier-caps and chimney-caps F31

Pier-caps, chimney-caps and the like shall each be enumerated separately stating the size and the shape where other than rectangular. Openings in chimney in chimney-caps shall be given in the description.

Hollow block suspended construction

Hollow block suspended construction generally F32

Hollow block suspended construction and formwork in contact therewith only shall be given under the appropriate heading. Floors. Roofs and the like F33

(a)Suspended floors, roofs and the like (measured over the ribs and bearings and grouped together) shall be given in square metres in accordance with clause F7 hereof. Filling ends of hollow-blocks shall be deemed to be included with the item. Solid concrete work in hollow-blocks construction shall be deemed to included with the item, alternatively, solid concrete work in hollow-blocks construction may be measured separately and so described. Particulars of the following shall be given.

(i) Composition and mix of concrete for ribs and topping. (ii)overall thickness of slab.

(iii) Size and type of blocks.

(iv) Distance between centres of rows of blocks.

(v) Size and type of sliptiles to soffites of concrete ribs between blocks. (vi) Finish to exposed soffies of blocks and tiles (e.g. plain; keyed). (b) Tops and cheeks of dormers (grouped together) shall be given in square metres stating the thickness.

Labors on hollow-block construction F34

Forming hips and valleys shall each be given separately in linear metres stating the thickness.

Fixing slips and metal clips F35

Fixing-slips, metal clips and the like shall each be enumerately stating the method of fixing.

Formwork F36

Formwork shall be given in accordance with clauses F19 to 24 hereof.

Prestressed concrete

Prestressed concrete generally F37

(a)pretressed concrete work (i.e. work reinforcement is tensioned before or as the load is applied)and its reinforcements and associated formwork shall be given under an appropriate heading.

(b)A general description of the pretressed work and of the system and method of tensioning shall be given. Where special and complicated

construction is involved drawing shall be provided. (c)Particulars of the following shall be given. (i)steel wires and any preparatory treatment. (ii) Type of jack to be used for tensioning.

(iii) Types of cones, wedges, anchor-plates, spacers, distance-pieces, and the like.

(iv) Amount of tension to be applied to wires.

(v) Number and diameter of wires to be simultaneously tensioned. (vi) Whether wires to be pre-tensioned or post-tensioned or tensioned as the load is applied and whether form one or both ends.

(vii) Maturity of concrete before pre-tensioning is released or post-tensioning is applied. (viii) Tests to be applied.

(ix) Cutting off, sealing and treating the ends of wires and cables. Structural in-situ members F38

(a)Structural in-situ members (e.g. beams; columns) shall be given in accordance with clause F10 hereof.

(b)Members cast in section (i.e. not in one continuous operation) shall be so described stating the number and average length of sections. (c)Construction joints between sections shall be enumerated. Cores, ducts and recesses F39

(a)Forming and grouting or sealing the ducts or grooves shall be given in

linear metres stating the number and the size. Particulars of the following shall be given. (i) Sleeves or sheathing.

(ii) Temporary supports required in the formation of the ducts. (iii) Composition of the grout.

(b) Ducts or grooves over 6 metres long shall be so described stating the length i further stages of 3 metres.

(c) Curved sleeves and curved sheathing shall each be so described irrespective of radius.

(d) Forming and grouting the air-holes at ends or sides of ducts shall be enumerated.

(e) Filling in the jacking or anchoring recesses shall be enumerated stating the finish to exposed surface of filling. Wires and cables F40

(a)Supplying steel wires or cables (measured between anchorages) shall be given in kilogrammes stating the ultimate strength and size of the wire or cable. Each size shall be given separately. No allowance shall be made for extra lengths, in anchorages or elsewhere.

(b)Fixing each length of wire or cable shall be enumerated stating the length, the number of stands in each cable, the type of central core and the type of sheathing (if any) to the wires. Degreasing, straightening, cutting to lengths and assembling wires and cables shall be deemed to be

included with the items.

(c)Cones, wedges, anchor-plates, spacers, distance-pieces and the like expendable items shall be each be enumerated separately.

(d)Tensioning each length of wire or cable shall be enumerated stating the sequence, cutting off ends of wires and cables shall be deemed to be included with the items. Reinforcement F41

Reinforcement shall be in accordance with clauses F16 to F18 hereof. Formwork F42

(a)Formwork shall be given in accordance with clauses F19 to F24 hereof, subject to the following.

(i) Any special requirements as to at rutting and supports shall be stated. (ii) Formwork to pre-tensioned and post-tensioned work shall each be so described.

(iii) Temporary restraints for tensioning and the like shall be given in the description of formwork.

(b) Formwork to recesses for anchorages shall be enumerated stating the size and shape.

(c) Formwork to temporary construction joints shall be enumerated stating the section of the abutting units.

Precast prestressed units

Precast prestressed units generally F43

(a)a general description of the prestressed units and of the system and method of tensioning shall be given. (b)Particulars of the following shall be given.

(i)steel wires and other requirements as appropriate in accordance with clause F37(c)hereof.

(ii) Shape of cross-section of unit. (iii) Nature and extent of surface finish.

(iv) Composition and mix of jointing and bedding material.

(c) Formwork or moulds for precast units and for forming anchorage pockets shall be deemed to be included with the items. Precast units F44

(a)Precast units shall be enumerated stating the number, the size, the length, the height above ground, and the method of fixing and bedding. Units of identical section but of varying lengths not exceeding 3 metres may be grounded together and the lengths averaged. Those over 3 metres long may be simulated in each case. Those of unusual shape or cross-section shall be so described and sketches provided. Classification shall be as follows.

(i)pre-tensioned in the mould.

(ii) Post-tensioned on the ground after casting.

(iii) Cast in section, assembled and post-tensioned before erection. (iv) Cast in section for assembly in-situ and post-tensioned after erection. (v) Post-tensioned after hoisting but capable of self-support.