Taking Off Quantities & Bill Of Quantities (BOQ) Preparation

Use the site plan to determine the total site clearance area, here 225 m², for boq preparation; if unavailable, apply the same method using the floor plan.

Apply topsoil excavation calculations using floor plan dimensions, account for spread on strip foundations, and automate quantities in Excel to link to the bill of quantities.

Master trench excavation and backfilling calculations by applying mean guard, external and internal guard, t-junction deductions, and automated spreadsheet methods for accurate BOQ measurements.

Calculate concrete foundation quantities by aligning backfill, trench guard width, and foundation thickness, describe and book the item, link to Mingot, and round final BOQ quantities to whole numbers.

Calculate blockwork in foundation by summing external and internal guards before subtracting the T-junction, then determine the mean cut by height to obtain stretcher-bond blockwork.

Develop backfilling and earth adjustment by calculating disposal and filling volumes for trench excavation, including side fills around the trench and concrete footing and blockwork quantities.

Merge hardcore filling, laterite filling, and damp proof membrane calculations by taking room-by-room dimensions from plans and converting areas to volumes for hardcore and laterite.

Understand how to measure damp proof courses on block work in meters, convert from meters squared by dividing the rate by thickness, and apply to internal and external block work.

Calculate fabric mesh reinforcement quantities from the floorplan area with a 25 mm concrete cover. Determine concrete floor slab volume (150 mm thick) and formwork lengths in linear meters.

Learn how to quantify a plain concrete staircase from plan, elevation, and section views, calculating each step's length, width, height, and total volume for bill of quantities preparation.

Compute 150 mm block thickness from the 3D model, determine length and height for substructure, yield 1.32 m2 of block work, and transfer quantities into the bill of quantities template.

Link your taking off sheet to the bill of quantities to update substructure quantities and amounts. Allocate preliminaries and contingencies as percentages of total contract sum for on price bill.

Learn to enter quantities, units, rates, and amounts in the bill of quantities, linking taking-off items from site clearance to substructure, with collection and summary page totals.

Explore superstructural taking off for the bill of quantities, detailing internal and external block walls, concrete lintel work, formwork, and reinforcement as the four items in this section.

Calculate external and internal wall guards for a floor plan, applying substructure and superstructure calculations when foundation plans are unavailable, and sum dimensions to derive total block guards.

Learn how to determine external and internal wall height for a bungalow, compute blockwork quantity using 450 by 230 mm stretcher-bond blocks, and adjust for openings and beams.

Deduce blockwork for external and internal walls by subtracting door and window openings and lintels using a door and window schedule; treat lintels as non-blockwork bridging openings.

Deduce lintel and opening quantities for external and internal walls by calculating door and window projections, concrete lintel dimensions, and blockwork coverage, then compute final BOQ quantities with 10% waste.

Learn how to estimate wood formwork for concrete lintels, calculating two sides and bottom by actual lintel lengths including projection, and rounding to totals like 31 m2.

discover how to calculate reinforcement in concrete lintels, including main bars and links, concrete cover, hook ends, and lintel length formulas for accurate quantities.

calculate reinforcement for concrete lintels by detailing main bars, links, and binding wires, applying uniform link spacing, concrete cover, and the length-minus-cover divided-by-spacing plus-one formula to derive total links.

Link taken-off quantities for external and internal walls in the superstructure to the bill of quantities, include lintels and reinforcement, with automatic updates from the taking-off sheet.

Learn roof taking off and BOQ preparation by extracting dimensions from the roof plan, sections, and elevations, covering concrete facade, roof beams, reinforcement, formwork, rafters, and roof covering.

Learn to simplify hip roofs by converting to a gable roof for quantity takeoff, then calculate concrete fascia around the building using a triangular area (base 450, height 450).

Calculate the roof beam volume as a cuboid external guard by multiplying length, height, and width to obtain 2.25 cubic meters and plan reinforcement for roof beam and concrete fascia.

Outline the reinforcement for the roof beam and concrete fascia, detailing four main bars in the beam and three in the fascia, with 8 mm links spaced about 600 mm.

Estimate formwork for concrete fascia and beam by measuring soffit and beam sides in plan Swift, converting to square meters, and totaling formwork quantities for the BOQ.

Calculate wall plate presence or absence, determine tie beam length from floorplan width, and estimate roof truss count from overall length plus projection at 1.2 m spacing, yielding 11 trusses.

Calculate rafters for a gable roof by using kingpost height and half the building width plus projection, then apply Pythagoras to get each rafter length.

Learn to calculate hip rafter length via a right triangle, determine hip and ridge cap quantities, and total rafter and cap materials for a BOQ.

Analyze kingpost height and struts in a roof truss system. Apply similar triangles and Pythagoras to derive quantities for the bill of quantities (boq) preparation.

Compute purlin quantities by counting pole lines on rafters at 900 mm centers, using line length as roof length plus projection; eight lines per fall, two falls, totaling 194 m.

Compute the roof covering area by multiplying the line length by the rafter length and doubling for both sides, then prepare the bill of quantities for the roof.

Create and link a roof bill of quantities template with preambles. Calculate concrete facial, roof beam, reinforcement, formwork, and coverings using formulas, updating rates as needed.

Enumerate doors and windows in the bill of quantities by detailing dimensions, ironmongers, framework, and finishes. No taking-off calculations are needed; book everything in numbers.

learn to take off windows and prepare the BOQ by detailing window preambles, dimensions, and burglary proof, linking quantities to costs and generating a final window total.

Explore wall finishes, covering internal and external rendering, rendering to reviews around doors and windows, and introduce wall tiling and finish measurement methods.

Calculate internal wall rendering by multiplying length by height and adjusting for openings. Include two internal faces and deduct doors and windows to reflect interior plastering.

Calculate external wall rendering using external guards and corner considerations, then deduct external openings like windows and recesses to obtain the final area, about 105 m².

Explore rendering to reveals for doors and windows, learn to calculate reveal lengths in linear meters with Excel formulas, and estimate cement and sand render mix for BOQ preparation.

Learn to take off wall tiling quantities for toilets and kitchens, measuring plan dimensions, computing area at 2.1 m height, and deducting doors and windows for an accurate bill of quantities.

Transfer wall finishes from the take-off into the bill of quantities using a prepared BOQ template, detailing internal and external rendering, plastering, and tiling with unit rates.