Design & Specification - Thomas Gamuel Flashcards
TG - How did you specify the WC refurbishment?
- Conducted inspection of internal areas throughout the school
- Reviewed the condition of each WC and recommended refurbishment on a yearly scheme
TG - How did you specify the strip out?
- Removal of all fixtures and fittings, including cubicles, soap dispensers, WC pans, basins, waste pipework and dead legs, existing doors, flooring, etc.
- Hand dryers are on hire so advised to set aside re installation
- Cap all pipework and take all cabling back to supply
TG - How did you specify the sanitaryware installation?
- Sanitaryware to be connected to fresh and foul water supplied to effectively supply and discharge as necessary
- Waste pipework to MUPVC to BS 5255 or PVC-C to BS EN 1566-1
- 2no. standard WC pans with 4.5litre dual flush valve
- 2no. urinals waterless in vitreous china w/ concealed cistern
- 1200mm solid surface wash trough with 12mm compact grade laminated access panels
TG - How did you specify the installation of cubicles?
- 12.5mm compact grade laminate with black core and radiused edges and anti-trap hinges
- 18mm melamine faced chipboard, satin anodised aluminium fittings
- Colours to be chosen by the school
- Cubicles to be plugged and screwed into the concrete flooring
TG - How did you specify the flooring installation? Why?
- Break out existing floor tiles, back to floor slab (concrete)
- Prepare existing floor screed and apply 3mm latex finish
- Install 2.0mm PUR floor covering, bonded to screeded floor using approved adhesive and laid in accordance with manufacturer’s instructions
o Provide guarantee of 10 years defective materials - Why – long-lasting, waterproof, and non-slip materials for wet room such as WC and comes with guarantee
TG - How did you specify the wall cladding?
- Strip existing walls of all paint
- Supply and install 12.5mm insulated dry lining plasterboard throughout all walls
- Add skim coat onto plasterboard for smooth finish
- Installation of white rock panel from floor to ceiling
o Ensure for 2-3mm gap between each panel and abutments – ceiling windows, etc.
o Use Altrofix W139 for all welded installations
o Apply adhesive to back of panel 25-30mm from edge and check it is level
TG - How did you specify to install the plasterboard?
- Align thermal liner squarely on wall, allow 15mm expansion joint at top and bottom
- Trowel continuous ribbon of adhesive around wall edges, openings and services penetrations
- Place thermal liner into position and tap into position using straight edge
- Vertical dabs at 300mm cs 25mm from edge, dabs 50-75mm wide and 25mm deep to allow for temping – total contact 20% of wall
- Ensure 50mm continuous ribbons at top and bottom and around openings
- When adhesive is dry, fix 2 mechanical fixings through the centre of the board
TG - What was the contractor’s design portion?
- Installation of new mechanical and electrical services into the WC
- Sanitaryware and drainage
- Lighting / small power
TG - How did you specify the contractor’s design portion?
- Included within the specification a section for each detailing what is required
- Specified requirements for sanitaryware:
o 2no. WCs, 2no. urinals (boys) 4no. WCs (girls) wash troughs for each
o Water heater – to be installed beneath sink in vanity unit - Specified requirements for lighting / electrics:
o Thorlux lighting in each room – lux level 100 – IP rating IP65
o Hand dryer
o Small power and fused spurs – in locations away from each of pupils
What are IP ratings?
- IP = Ingress Protection
- Classifies degree of protection provided by an enclosure for electrical equipment with a rated voltage of no more than 72.5kV
- Defined by British Standard BS EN 60529:1992
- IP65 – first digit indicates level of protection against ingress of solid objects, second digit is protection against liquids
First digit Intrusion Protection Second digit Moisture Protection
0 No protection 0 No protection
1 Protection against solids over 50mm – e.g. accidental touch by hands 1 Protected against vertically falling drops of water, e.g. condensation
2 Protected against solid objects over 12mm e.g. fingers 2 Protected against direct sprays of water up to 15 degrees from vertical
3 Protected against solid objects over 2.5mm, e.g. tools and wires 3 Protected against direct sprays of water up to 60 degrees from vertical
4 Protected against solid objects over 1mm, e.g. wires and nails 4 Protected against water splashed from all directions, limited ingress permitted
5 Protected against dust limited ingress, no harmful deposits 5 Protected against low pressure jets of water from all directions, limited ingress permitted
6 Totally protected against dust 6 Protected against strong jets of water, e.g. on ships decks, limited ingress permitted
TG - What data sheets did you include?
- Flooring – Polyflor verona
- Lighting – Thorlux down lighting
- Decorations – dulux trade/ white rock
- Cubicles
What is a data sheet?
- Document summarising the performance and other characteristics of a product to allow buyer to understand what the product is and the role of the component in the overall system
TG - What British Standards did you reference?
- Fresh and foul water pipework – BS 5255 or BS EN 1566-1
- Vinyl flooring installation – BS 8203:2001
- Electrical installation – lighting installations – BS 7671
- Electrical installation – test switches – BS 5266
- Plasterboard installation – openings and service penetrations – BS 8121: 1986 & BS 800: Part 8: 1994
