Philinter Multi-Sports CenterPrecast scheme (PMC) · final · 40×16 rework — 40.0 × 16.00 m · eave 8.0 · ridge 10.143 · roof 15°

Site 40.0 × 18.0 m; the floor plate is reworked to 40.0 × 16.00 m — the north wall moves 1,250 south, widening the boundary clearance from 750 to 2.0 m, so the footings and blinding sit well clear of the neighbour's land. North eave 0 (internal gutter) · truss span 15.60 m · front run-off 1.45 m · rear run-off 0.75 m. The 2.0 m gap gives erection crews comfortable working room, and it lets intake louvres run the full length of the north face. The bleachers have been deleted (item 9) — the north run-off is 750. South wall: the existing shared wall with the academy is only 2,000 high, so it is demolished and rebuilt (item 9) in the same precast wall T100 as the north. Openings are cast at the plant, so there is no cutting work on site. Main entrance W3,000 sits in the south wall of the glass block at x 33.6-36.6, facing the academy gate. RC columns 350×350 full height · 8-D20 main bars (PMC — the wall became a slab, so the face load the column carries went down). Abutting buildings: north x 0-15 (2 storeys) · south staff dormitory x 0-13 — everything beyond is open (items 1, 2). The east side toward the petrol station was confirmed on site to be vacant ground (item 9). The climbing wall is cancelled (item 3). The four east gable columns that were its anchor line stay, because they now carry the gable wall and its precast panels. Air intake (rebuilt per item 12 ①②⑤) — 8 north (the 2.0 m clearance opens the whole north face) · 4 south low-level · 3 large on the east gable = 15 locations, effective free area 11.4 m², plus a continuous intake L32.4 under the south eave. The "no openings on the east" premise is withdrawn — the owner re-inspected the site and confirmed it is open ground well clear of the petrol station. The 16.00 m east gable sees outside air across its full width, and with the 2.0 m clearance the north face now breathes as well (only the south stays blocked by the dormitory for 13 m). Using almost all of the 5,000 / 5,550 / 3,300 clear bays between the C3 columns, the openings are 4,400 + 4,950 + 2,700 × H1,090 (GL+1,160-2,250). Court 1's end line is at x 1,500, so balls strike these directly — a ball-guard grille ∅16 @100 is added. The two west gable louvres are deleted (item 12 ②) — as the owner pointed out, they opened not into the arena but into the lobby/stair (z 4,300) and the simulation room (z 13,700). Air entering a closed room never reaches the court, so they added nothing to ventilation while punching openings into the street facade. Do gable louvres help ventilation? (item 12 ⑤) — Yes, but only low, and only as intake. The ridge outlet is a 40 m × 1,000 cap with about 7.0 m² of free area, while the previous 10 intakes at 1,880×680 with a 0.40 free ratio gave only 5.1 m² — the exhaust was being throttled by the intake. With 8 north, 4 south and 3 east louvres the intake now totals 11.4 m², comfortably above the 7.0 m² ridge outlet. Louvres are not cut into the gable triangle (above the 8,000 eave) — an opening that high sits above the neutral plane with the ridge, short-circuits the stack, and can reverse-flow the ridge vent depending on wind direction. Glass block, ground floor — lobby / performance space (8,300 open to the court) / backstage store / simulation room. The party-wall column at z 8,800, removed to create the performance space, is replaced by transfer beam TG1 H-600×200 (span 8,500 · point load 196 kN) (items 5, 6). Five new west gable columns (item 11 — an omission the owner caught from the 3D). Up to this point the columns on the west wall line (x 39,630) stopped at +3,550, under the second-floor beam. Nothing carried the roof: the eave ring beam would have cantilevered 7.2 m past the last truss T4 (x 32,700) and the west gable frame would have hung in mid-air. The east gable had four columns running to the roof; only the west was missing — not a decision, an omission. They now run to the roof (same 350×350 section as the other columns). They reuse the second-floor beam grid, so the foundation positions do not change. The second floor was raised 500, FL+3,700 → +4,200 (item 11) — with the stage at H500, the old level left only 3,200 of headroom above it. The stair is a straight flight of 24 risers, R175.0 × T280 · 32.0° · 2R+T=630 · width 1,250 · z 2,360→8,800, passing over the backstage store (items 7, 11). Clear headroom under the beam at z 4,550 rises from 2,053 to 2,125, so the headroom shortfall noted on the earlier drawings is resolved. Stage H500 · 3,700 × 8,300 = 30.7 m² · 3 steps at the front. From the stage deck to the underside of TG1 is 2,950. Glass block, second floor — a single open room with no partitions, 103.3 m² · curtain wall FL+4,200 to +7,400. Foundations — all concentric pad footings (items 8, 9). There is not one eccentric footing. With the north clearance widened to 2,000, the excavation-limit problem disappears and the F2 rectangular pads (1,800×1,300) are abolished — every column sits on the same F1 1,500×1,500×T400. The north edge of the northmost pads lands at z 16,350, leaving 1,650 clear of the boundary (1,550 including lean concrete). The 39.4 m of SB1 strap beams is deleted in full. Item 12 ⑧ — "the east and west columns stand 8 m alone; can there really be no intermediate or upper beam?" Under the precast scheme the answer gets simpler. Two parts. (1) The columns are restrained at the head and at mid-height. The eave RC ring beam 300×400 runs the 40 m of both the south and north, the gable rake beams tie the gable column heads up to the ridge, and roof-plane X-bracing in the end bays carries those heads back to trusses T1 and T4. On top of that the B1 wall beams 200×340 come in two tiers (GL+3,660-4,000 · 7,660-8,000) to carry the precast panels, and they give the column an intermediate restraint. The free length drops from 9,100 to 3,660, so even at 350 square k·lu/r = 0.8×3,660 / (0.3×350) = 28, far below the braced limit of 40 (the previous scheme, 450 square over a free length of 9,100, was 54). With slenderness gone, 450×450 → 350×350 becomes possible, and the wall beam doubles as the intermediate RC beam. (2) And the wind columns and girts disappear entirely. The problem in the old scheme was never the column but the envelope — 75T PU panel spanned 5,450 vertically (GL+2,550 to the 8,000 eave) unsupported, while its allowable single span at a 1.5 kPa design pressure was 4,000-4,500 (Cebu · NSCP 2015 Zone II V=200 km/h · partially enclosed GCpi ±0.55 → wall C&C 1.5-1.7 kPa). Wind columns and girts had to be inserted to cut that span. Precast wall T100 spans the 3,660 between wall beams by itself, so it needs nothing to back it up. With no panel left to support, wind columns □-200×100×9 (-296,985 ₱) and girts C-200×75×20×3.2 (-157,079 ₱) are deleted — -454,064 ₱ in total, and structural steel drops from 18.8 to 15.3 tonnes. The 75T panel survives only in the gable triangle, 33.44 m², where no wall beam can be landed; there each tier is under 3,660, inside the allowable span. Item 12 ⑨ electrical — the service entry and main distribution panel MDP sit immediately to the right as you enter the store (inner face of the stage party wall, x 36,350 · z 5,700). The riser climbs the party-wall line (x 32,700) to GL+7,800 under the eave; the main tray runs along the south eave from T4 to T1 and then splits north-south along the top face of the truss bottom chord (GL+7,860). Socket outlets go only on the second floor (yoga/gym — treadmills) and in the simulation room. Not one is placed in the arena court area — wall sockets get hit by balls and floor sockets get soaked when the floor is washed. Item 12 ③ The backstage store door D4 moves from x 37,200-38,100 to 36,450-37,350, tight against the store/stage party wall and thus 850 further from the stair (x 38,200-39,450), so large items clear the treads more easily. Item 12 ④ The single-storey south staff dormitory at H3,000 is now a confirmed figure (previously "approx."). Item 13 branding (signage · logo · brand colours) — switch "Branding" off in the left panel and the building reverts exactly to its un-branded state. This is a proposal; compare the two and decide. (a) Roof signage south slope PHILINTER W27.0 · north slope ACADEMY W23.0, folded white coated-steel letters. The two read in opposite directions — a sign on a pitched plane must read from the side that plane faces, so on any single roof plan one of the two is necessarily upside down. That is how the real building behaves. (b) Entrance logo reproduced as supplied, on the second-floor south wall above the glass door, centred at x 35,100 within x 33.6-36.6, baseline GL+5,300, overall 2,000 × 2,000, 40 mm relief. It sits above the 2,740 canopy and the 4,200 floor and below the 8,000 eave, so nothing obstructs it from the front. The brush strokes are genuinely raised solids, not a flat graphic, so they read as shadow. "SINCE 2003" alone is small enough to become cut lettering in the working design. The colour is dark green (#1f3b30) — the real logo colour the owner identified, and since it is not among the white/red/blue brand colours it is kept as an accent used on the logo only. (c) White wall, blue lines The precast panels are plant-painted white (#e6e9e8), and blue (#11479b) is laid only on lines that already exist — both bands are the face of the B1 wall beam 200×340 itself. The eave band GL+7,660-8,000 is the upper wall beam; the waist band GL+3,660-4,000 is the lower wall beam and also the line where the precast panels divide into the lower and upper tier. No new line is drawn; an existing line is made visible. A 200-wide band on each of the four corners and a 250 band on the gable rake define the building outline. A 150 red border is used on the main entrance only, so all three brand colours appear. (d) NW Mondrian red, blue and yellow fields with a blue grid on the corner where the west (street) and north faces meet. The owner picked the right place — west x 40,000 is the street face and the only approach, the neighbour blocks the north for only x 0-15 so x 32-40 is fully open, and the west gable became a completely blank wall once the louvres were removed under item 12 ②. The white wall is itself Mondrian's white ground, so only the colour fields and the grid are added; painted area does not increase and the cost effect is negligible. The grid is drawn in blue rather than the original's black, keeping it within the brand colours. Note, however, that yellow is not one of the three brand colours — a version using red and blue only is available if preferred.

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